#EclipseLink

[nehaarticles]

[sanjivdube]

Top 15 Hibernate Tricky Interview Questions for Experienced

Question # 1 What's hibernate in coffee?

Answer:Hibernate ORM (Hibernate in brief ) is an object-relational mapping instrument for the Java programming language. It gives a framework for mapping an object-oriented domain model into a hierarchical database.

Question # 2 Is better compared to JDBC?

Answer:JDBC will consistently give much better performance as compared to Hibernate for the majority of the database vendors. ... The option of hibernate over JDBC and SQL questions isn't due to the functionality but due to motives, mostly object persistence and database freedom, in not writing particular database queries.

Hibernate reduces lines of code by claiming object-table mapping itself, and returns lead to a program in Java objects. Hibernate, using sterile Persistence, cache is put to the program work area.

Question # 4 What's the usage of ORM in Java?

Answer:Hibernate is an ORM framework -- you explain how your items are represented on your database, and then sew manages the conversion.

Question # 5 What's the distinction between JPA and Hibernate?

Answer:JPA is the port. Hibernate is 1 implementation of the interface. JPA is a specification for obtaining, persisting, and handling the information between Java objects and the relational database. Since the definition states its API, it's merely the specification. Hibernate is a JPA supplier.

Question # 6 What's the usage of Session in hibernate?

Answer:The main runtime interface between a Java program and Hibernate. This is the primary API course abstracting the idea of persistence support. The lifecycle of a Session is bounded from the start and ending of a logical transaction.

Question # 7 What's the design of hibernate?

Answer:Hibernate uses this database and configuration information to give persistence services (and persistent items ) into the program.

Question # 8 What's ORM hibernate?

Answer:Hibernate ORM (Hibernate in brief ) is an object-relational mapping instrument for the Java programming language. It gives a framework for mapping an object-oriented domain model into a hierarchical database.

Query # 9 Could we utilize just JPA without hibernate?

Answer:You must define the persistence supplier (Hibernate, EclipseLink) to utilize the JPA implementation. The persistence providers possess the implementation courses for JPA specifications. You can not only use JPA cause it's an API =-RRB-, however you will find lots of JPA implementations: EclipseLink.

Answer:2 strategies can be announced in the O/R mapping metadata or over-ridden with a specific HQL or even Criteria query. Hibernate defines the subsequent drawing approaches:

Response # Polymorphic institution is a phrase used in discussions of Object-Relational Mapping concerning representing from the relational database domain name a connection from 1 class to multiple courses. In statically typed languages like Java, these various classes are subclasses of the same superclass.

Question # 12 What's the difference between Session and Sessionfactory in Presentation?

Answer:SessionFactory is Hibernate's concept of one datastore. It can be threadsafe, so many threads may access it simultaneously and ask for sessions and immutable cache of compiled mappings for one database. Sessions are opened with a SessionFactory and then are shut when all work is complete.

Question # 13 What's the difference between loading and also get method in Presentation?

Answer:In Hibernate, proxy is an item with the specified identifier worth. Its properties aren't initialized yet. It only appears to be a temporary imitation object. If no row is found, it'll throw an ObjectNotFoundException.

Response # SessionFactory can also be thread-safe so just 1 thread can execute in a time its code. The case of sessionFactory is heavyweight since it comprises link, hibernate configuration, mapping documents, and place path. If you generate some points of sessionFactory, then your code gets quite heavy.

Question # 15 What are the configuration files?

Answer:Hibernate also takes a set of configuration choices associated with the database and other associated parameters. All such advice is generally provided as a normal Java properties file called hibernate.properties or as an XML file called hibernate.cfg.xml.

Know more

[zarinfam]

How to map PostgreSQL ARRAY type to List using JPA and EclipseLink

In PostgreSQL database, you can have columns in a table as variable-length multidimensional arrays in any types (built-in or user-defined base type, enum type, composite type, range type, or domain)

Read more…

[abhishek1987-blog]

Try out JSON-B 1.0, JPA 2.2 using Java EE 8 on Glassfish 5 & Docker

Try out JSON-B 1.0, JPA 2.2 using Java EE 8 on Glassfish 5 & Docker

Glassfish 5 Build 11 is now available – with support for many of the Java EE 8 specifications e.g. JAX-RS 2.1, JPA 2.2, JSON-B 1.0 etc. For more details check out the Aquarium space. This blog covers

test driving couple of new additions in this build – JSON-B 1.0 and JPA 2.2

we run this in a container, thanks to the Glassfish 5 nightly Docker image

Application

It’s a simple one – available on…

[technsavi]

JEP Updates, GraalVM Code to OpenJDK, Return of JavaOne

JEP Updates, GraalVM Code to OpenJDK, Return of JavaOne

This week’s Java roundup for October 17th, 2022 features news from OpenJDK, JDK 19, JDK 20, JavaFX 20, Generational ZGC Build 20, Oracle Labs, Liberica JDK and Native Image Kit, Spring milestone, point and release candidates, EclipseLink 4.0, Quarkus 2.13.3, Micronaut 3.7.2, Hibernate Reactive 1.1.9, JHipster Lite 0.20, Apache Commons CVE, Groovy 4.0.6 and 2.5.29 and the return of…

[jobsaggregation2]

SOA Specialist in PA

SOA Specialist Harrisburg PA Description: The Department of Environmental Protection is seeking a Technical Specialist that possesses strong software engineering skills, and strong development background to build a Web services. The successful candidate for this position must possess strong software engineering skills, and a strong development background to build a Web services. This position will be responsible for building the SOA web service, leveraging OWSM security, CEP, UDDI, Oracle Identity Manager (LDAP) frameworks. The candidate is asked to perform tasks such as to design, develop Java / J2EE applications and services, execute test plans, co-ordinate, implement and deploy software in multiple environments. This position will act as a lead on the SOA team and contribute end to end design, development and delivery activities to implement secure data exchange infrastructure application solution. Minimum Qualifications: Over 5 years of extensive development experience in a SOA environment Over 5 years of Hands-on experience implementing SOA/OSB 5+ years of deep understanding of SOA, OSB, API 5 years of experience in complex SOA / integration projects, specifically in Service Bus, Mediator, BPEL, WSDL, SOA delivery Proficiency in application tools/languages such as: OSB, Oracle SOA 11g, JDeveloper, Eclipse/OEPE, SOAP, SOAPUI, BPEL, XML, XSD, UDDI, XSLT, REST/JSON, JMS, Unit testing frameworks 3+ yrs of strong experience in implementing J2EE Design Patterns for module designs 5+ yrs of experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate. 7+ yrs of experience in building complex enterprise applications using JAVA / J2EE technologies 5+ yrs of experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite 5+ yrs of experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task 5+ yrs of experience in using OER & OSR or any other Repository 5+ yrs of experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS 5+ yrs of experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs 5+ yrs of Java programming in XML using JAXB, SAX and DOM 5+ yrs of experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. Preferred Qualifications: Very good understating on server side implementation of the modules including distributed deployments, thread management and garbage collection configurations to optimize the performance of the application 7+ yrs Strong debugging and troubleshooting skills 5+ yrs of experience in implementing Java/J2EE solutions using WebLogic and Tomcat 5+ yrs of strong JDBC programming experience in using Open JPA and other ORM tools like Spring Hibernate, Eclipselink etc., 5+ yrs of strong SQL and Database Programming Skills using Oracle. Experience with SOA principles (loose coupling, reusability, synchronicity, high availability, scalability), SOA design patterns and integration patterns 5+ yrs of SOA governance experience, involving design with common integration patterns, common reusable modules, standards based business object definition, review the technical solutions and conforming developed code to a set of standards Conversant with emerging technologies & tools in SOA space 5+ yrs of XML experience, including schema design/extensions, XML parsing with XSLT, XPath, XQuery 1+ yrs experience using Build/Dependency Management ? Maven or Ant 3+ yrs of understanding and working with security Frameworks ? Web service Security and Java Security Participate in strategic initiatives relating to system development and enhancements Contribute to system delivery specifications and technical design specifications. Develop and test the components as per the specification Participate in all phases of projects Manage individual tasks and deliverables in order to complete projects on schedule Execute on design and development consistent with approved enterprise architecture concepts, principles and frameworks. Work closely with the team and demonstrate leadership activity in the development 5+ yrs Web Servers- WebLogic and/or other JEE Application Servers 5+ yrs Database ? Oracle, PL/SQL Stored Procedures strongly desired 5+ yrs Operating Systems and Environments ? Unix/Linux, Windows Ability to do some shell or Perl scripting 5+ yrs Application Architecture and Design ? Enterprise Integration Patterns; Object Oriented Programming; Aspect Oriented Programming; Java Design Patterns; SOA Architecture/Design Proven ability in application design and development of enterprise solutions Expert understanding of the software development process including analysis, design, coding, system and user testing, problem resolution and planning Understanding in User Interface design and web based technologies Understanding in service oriented development and best practices Deep understanding of distributed systems Technical leadership and decision making abilities Understanding of Services Industry and specifically Securities domain is a huge plus Understanding/Experience developing and designing in an Agile methodology strongly preferred Familiarity with WebSSO technologies such as CA eTrust, SiteMinder or Entrust GetAccess. Familiarity with Source code control systems such as SVN, ClearCase or Microsoft Visual SourceSafe. Familiarity with fundamentals of software configuration management, automated build processes, and source code control systems. 5+ yrs Experience in business to business (B2B) environments and cloud base service deployment. Skills Extensive development experience in a SOA environment Hands-on experience implementing SOA/OSB Deep understanding of SOA, OSB, API Experience in complex SOA / integration projects (refer to details tab for listing) Strong experience in implementing J2EE Design Patterns for module designs Experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate Experience in building complex enterprise applications using JAVA / J2EE technologies Experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite Experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task Experience in using OER & OSR or any other Repository Experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS Experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs Java programming in XML using JAXB, SAX and DOM Experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. -- Reference : SOA Specialist in PA jobs from Latest listings added - JobsAggregation http://jobsaggregation.com/jobs/technology/soa-specialist-in-pa_i9439

[nox-lathiaen]

SOA Specialist in PA

SOA Specialist Harrisburg PA Description: The Department of Environmental Protection is seeking a Technical Specialist that possesses strong software engineering skills, and strong development background to build a Web services. The successful candidate for this position must possess strong software engineering skills, and a strong development background to build a Web services. This position will be responsible for building the SOA web service, leveraging OWSM security, CEP, UDDI, Oracle Identity Manager (LDAP) frameworks. The candidate is asked to perform tasks such as to design, develop Java / J2EE applications and services, execute test plans, co-ordinate, implement and deploy software in multiple environments. This position will act as a lead on the SOA team and contribute end to end design, development and delivery activities to implement secure data exchange infrastructure application solution. Minimum Qualifications: Over 5 years of extensive development experience in a SOA environment Over 5 years of Hands-on experience implementing SOA/OSB 5+ years of deep understanding of SOA, OSB, API 5 years of experience in complex SOA / integration projects, specifically in Service Bus, Mediator, BPEL, WSDL, SOA delivery Proficiency in application tools/languages such as: OSB, Oracle SOA 11g, JDeveloper, Eclipse/OEPE, SOAP, SOAPUI, BPEL, XML, XSD, UDDI, XSLT, REST/JSON, JMS, Unit testing frameworks 3+ yrs of strong experience in implementing J2EE Design Patterns for module designs 5+ yrs of experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate. 7+ yrs of experience in building complex enterprise applications using JAVA / J2EE technologies 5+ yrs of experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite 5+ yrs of experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task 5+ yrs of experience in using OER & OSR or any other Repository 5+ yrs of experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS 5+ yrs of experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs 5+ yrs of Java programming in XML using JAXB, SAX and DOM 5+ yrs of experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. Preferred Qualifications: Very good understating on server side implementation of the modules including distributed deployments, thread management and garbage collection configurations to optimize the performance of the application 7+ yrs Strong debugging and troubleshooting skills 5+ yrs of experience in implementing Java/J2EE solutions using WebLogic and Tomcat 5+ yrs of strong JDBC programming experience in using Open JPA and other ORM tools like Spring Hibernate, Eclipselink etc., 5+ yrs of strong SQL and Database Programming Skills using Oracle. Experience with SOA principles (loose coupling, reusability, synchronicity, high availability, scalability), SOA design patterns and integration patterns 5+ yrs of SOA governance experience, involving design with common integration patterns, common reusable modules, standards based business object definition, review the technical solutions and conforming developed code to a set of standards Conversant with emerging technologies & tools in SOA space 5+ yrs of XML experience, including schema design/extensions, XML parsing with XSLT, XPath, XQuery 1+ yrs experience using Build/Dependency Management ? Maven or Ant 3+ yrs of understanding and working with security Frameworks ? Web service Security and Java Security Participate in strategic initiatives relating to system development and enhancements Contribute to system delivery specifications and technical design specifications. Develop and test the components as per the specification Participate in all phases of projects Manage individual tasks and deliverables in order to complete projects on schedule Execute on design and development consistent with approved enterprise architecture concepts, principles and frameworks. Work closely with the team and demonstrate leadership activity in the development 5+ yrs Web Servers- WebLogic and/or other JEE Application Servers 5+ yrs Database ? Oracle, PL/SQL Stored Procedures strongly desired 5+ yrs Operating Systems and Environments ? Unix/Linux, Windows Ability to do some shell or Perl scripting 5+ yrs Application Architecture and Design ? Enterprise Integration Patterns; Object Oriented Programming; Aspect Oriented Programming; Java Design Patterns; SOA Architecture/Design Proven ability in application design and development of enterprise solutions Expert understanding of the software development process including analysis, design, coding, system and user testing, problem resolution and planning Understanding in User Interface design and web based technologies Understanding in service oriented development and best practices Deep understanding of distributed systems Technical leadership and decision making abilities Understanding of Services Industry and specifically Securities domain is a huge plus Understanding/Experience developing and designing in an Agile methodology strongly preferred Familiarity with WebSSO technologies such as CA eTrust, SiteMinder or Entrust GetAccess. Familiarity with Source code control systems such as SVN, ClearCase or Microsoft Visual SourceSafe. Familiarity with fundamentals of software configuration management, automated build processes, and source code control systems. 5+ yrs Experience in business to business (B2B) environments and cloud base service deployment. Skills Extensive development experience in a SOA environment Hands-on experience implementing SOA/OSB Deep understanding of SOA, OSB, API Experience in complex SOA / integration projects (refer to details tab for listing) Strong experience in implementing J2EE Design Patterns for module designs Experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate Experience in building complex enterprise applications using JAVA / J2EE technologies Experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite Experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task Experience in using OER & OSR or any other Repository Experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS Experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs Java programming in XML using JAXB, SAX and DOM Experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. -- Reference : SOA Specialist in PA jobs Source: http://jobrealtime.com/jobs/technology/soa-specialist-in-pa_i10153

[technicallycoolalpaca]

What technologies/architectures should I use for this project?

Hi all,

I have to build a platform whit this 2 important requisites:

- Get data from a lot of devices through petitions and receiving CSVs from them every 15 minutes.

- Represent that data (date, and 20-30 variables more) in graphics and to navigate through them.

Many data variables from many devices mean a huge amount of data... and this is the problem.

I have a J2EE project with MySQL database (using EclipseLink) and I save the data in the same table of the database. In the beginning, it was fast but because of the huge amount of data over time, now it is very very slow and the java log shows constant errors (timeouts, etc.).

Thinking in a quick solution, I thought to separate the table where I save the data into various tables depending on the date, for instance, one table for each month and knowing the period date that I have to represent, I could join the data from the different tables I need. That's how the program could search only the data on a few specific and small tables, not one too big.

I think this solution is a bad practice, but I need something quick to develop.

Another solution I have thought was to use a non-relational database only for that table, but I don't know how much could speed up the platform.

I ask myself how companies deal with the problem of saving a huge amount of data and keep being fast.

Sorry for my English and my junior ideas!

submitted by /u/englishlearner94 [link] [comments] from Software Development - methodologies, techniques, and tools. Covering Agile, RUP, Waterfall + more! http://bit.ly/2WqTV0H via IFTTT

[chamoranwadane-blog]

data persistence

What is a data persistence??

Information systems process data and convert it into information. The data should persist for later use

To maintain the status

For logging purposes

To further process and derive knowledge (data science)

Data can be stored, read, updated/modified, and deleted. At run time of software systems, data is stored in main memory, which is volatile (computer storage that only maintains its data while the device is powered (RAM),Data should be stored in non-volatile storage for persistence(Hard disk)

              Two main ways of storing data

Files

Databases, in here many formats for storing data.

Plain Text

JSON

Tables

Text files

Images

What is a Data, Database, Database Server, Database Management System??

Data: In computing, data is information that has been translated into a form that is efficient for movement or processing

Data Types

Database: A database is a collection of information that is organized so that it can be easily accessed, managed and updated

Database types

Hierarchical databases: data is stored in a parent-children relationship nodes. In a hierarchical database, besides actual data, records also contain information about their groups of parent/child relationships.

Network databases: Network database management systems (Network DBMSs) use a network structure to create relationship between entities. Network databases are mainly used on a large digital computer.

Relational databases: In relational database management systems (RDBMS), the relationship between data is relational and data is stored in tabular form of columns and rows. Each column if a table represents an attribute and each row in a table represents a record. Each field in a table represents a data value.

Non-relational databases (NoSQL)

Object-oriented databases: In this Model we have to discuss the functionality of the object-oriented Programming. It takes more than storage of programming language objects.

Graph databases: Graph Databases are NoSQL databases and use a graph structure for sematic queries. The data is stored in form of nodes, edges, and properties.

Document databases: Document databases (Document DB) are also NoSQL database that store data in form of documents. Each document represents the data, its relationship between other data elements, and attributes

Database Server: The term database server may refer to both hardware and software used to run a database, according to the context. As software, a database server is the back-end portion of a database application, following the traditional client-server model. This back-end portion is sometimes called the instance. It may also refer to the physical computer used to host the database. When mentioned in this context, the database server is typically a dedicated higher-end computer that hosts the database.

Database Management System: A database management system (DBMS) is system software for creating and managing database. The DBMS provides users and programmers with a systematic way to create, retrieve, update and manage data.

 Files and databases

Advantages of storing data in files

Higher productivity

Lower costs

Time saving

Disadvantages of storing data in files

Data redundancy

Data inconsistency

Integrity problem

Security problem

Advantages of storing data in database

Excellent data integrity independence from application programs

Improve data access to users through the use of hos and query language

Improve data security storage and retrieval

Disadvantages of storing data in database

Complex, difficult and time consuming to design

Substantial hardware and software start-up cost.

Initial training required for all programmers and users

Data arrangements

Un-structured - Unstructured data has internal structure but is not structured via pre-defined data models or schema. It may be textual or non-textual, and human- or machine-generated. It may also be stored within a non-relational database like NoSQL

           E.g. – paragraph, essay

Semi- structured - Semi-structured data is a data type that contains semantic tags, but does not conform to the structure associated with typical relational databases. Semi-structured data is one of many different types of data.

Structured - Structured data is data that has been organized into a formatted repository, typically a database, so that its elements can be made addressable for more effective processing and analysis. This persistence technique is better for these arrangements.

                                 Data Warehouse is an architecture of data storing or data repository. Whereas Big Data is a technology to handle huge data and prepare the repository. ... Data warehouse only handles structure data (relational or not relational), but big data can handle structure, non-structure, semi-structured data.

APPLICATION TO FILES/DB

Files and DBs are external components.They are existing outside the software system. Software can connect to the files/DBs to perform CRUD operations on data  

File –File path, URL

DB –connection string

To process data in DB ,

SQL statements

Statement interface is used to execute normal SQL queries. You can’t pass the parameters to SQL query at run time using this interface. This interface is preferred over other two interfaces if you are executing a particular SQL query only once. The performance of this interface is also very less compared to other two interfaces. In most of time, Statement interface is used for DDL statements like CREATE, ALTER, DROP etc. For example,

 //Creating The Statement Object

Statement stmt = con.createStatement();

//Executing The Statement

      stmt.executeUpdate("CREATE TABLE STUDENT(ID NUMBER NOT NULL, NAME VARCHAR)");

 Prepared statements

Prepared Statement is used to execute dynamic or parameterized SQL queries. Prepared Statement extends Statement interface. You can pass the parameters to SQL query at run time using this interface. It is recommended to use Prepared Statement if you are executing a particular SQL query multiple times. It gives better performance than Statement interface. Because, Prepared Statement are precompiled and the query plan is created only once irrespective of how many times you are executing that query. This will save lots of time.

//Creating PreparedStatement object

  PreparedStatement pstmt = con.prepareStatement("update STUDENT set NAME = ? where ID = ?");

  //Setting values to place holders using setter methods of PreparedStatement object

  pstmt.setString(1, "MyName");   //Assigns "MyName" to first place holder

          pstmt.setInt(2, 111);     //Assigns "111" to second place holder

 //Executing PreparedStatement

 pstmt.executeUpdate();

 Callable statements

Callable Statement is used to execute the stored procedures. Callable Statement extends Prepared Statement. Usng Callable Statement, you can pass 3 types of parameters to stored procedures. They are : IN – used to pass the values to stored procedure, OUT – used to hold the result returned by the stored procedure and IN OUT – acts as both IN and OUT parameter. Before calling the stored procedure, you must register OUT parameters using registerOutParameter() method of Callable Statement. The performance of this interface is higher than the other two interfaces. Because, it calls the stored procedures which are already compiled and stored in the database server.

 /Creating CallableStatement object

 CallableStatement cstmt = con.prepareCall("{call anyProcedure(?, ?, ?)}");

 //Use cstmt.setter() methods to pass IN parameters

 //Use cstmt.registerOutParameter() method to register OUT parameters

 //Executing the CallableStatement

 cstmt.execute();

 //Use cstmt.getter() methods to retrieve the result returned by the stored procedure

  Useful objects

Connection

Statement

Reader

Result set

 OBJECT RELATIONAL MAPPING (ORM)

There are different structures for holding data at runtime  

Application holds data in objects

Database uses tables (entities)

Mismatches between relational and object models

Granularity: Object model has more granularity than relational model.

Subtypes: Subtypes (means inheritance) are not supported by all types of relational databases.

Identity: Like object model, relational model does not expose identity while writing equality.

Associations: Relational models cannot determine multiple relationships while looking into an object domain model.

Data navigation: Data navigation between objects in an object network is different in both models

Beans use POJO  

stands for Plain Old Java Object. It is an ordinary Java object, not bound by any special restriction other than those forced by the Java Language Specification and not requiring any class path. POJOs are used for increasing the readability and re-usability of a program. POJOs have gained most acceptance because they are easy to write and understand. They were introduced in EJB 3.0 by Sun microsystems.

A POJO should not:

Extend pre-specified classes.

Implement pre-specified interfaces.

Contain pre-specified annotations.

Beans

•Beans are special type of Pojos. There are some restrictions on POJO to be a bean. All JavaBeans are POJOs but not all POJOs are JavaBeans. Serializable i.e. they should implement Serializable interface. Still some POJOs who don’t implement Serializable interface are called POJOs because Serializable is a marker interface and therefore not of much burden. Fields should be private. This is to provide the complete control on fields. Fields should have getters or setters or both. A no-AR constructor should be there in a bean. Fields are accessed only by constructor or getter setters.

POJO/Bean to DB

Java Persistence API (JPA)

An API/specification for ORM.

Uses  

POJO classes

XML based mapping file (represent the DB)

A provider (implementation of JPA)

 JPA Architecture

JPA implementations

Hybernate

JDO

EclipseLink

ObjectDB

  NOSQL AND HADOOP

Not Only SQL (NOSQL)

Relational DBs are good for structured data.For semi-structured and un-structured data, some other types of DBs can be used

Key-value stores

Document databases

Wide-column stores

Graph stores

  Benefits of NoSQL

When compared to relational databases, NoSQL databases are more scalable and provide superior performance, and their data model addresses several issues that the relational model is not designed to address:

Large volumes of rapidly changing structured, semi-structured, and unstructured data.

 NoSQL DB servers

MongoDB

Cassandra

Redis

Amazon DynamoDB

Hbase

 Hadoop

           The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Rather than rely on hardware to deliver high-availability, the library itself is designed to detect and handle failures at the application layer, so delivering a highly-available service on top of a cluster of computers, each of which may be prone to failures.

  Hadoop core concepts

Hadoop Distributed File System (HDFS™): A distributed file system that provides high-throughput access to application data

Hadoop YARN: A framework for job scheduling and cluster resource management.

Hadoop Map Reduce: A YARN-based system for parallel processing of large data sets.

INFORMATION RETRIEVAL

Data in the storages should be fetched, converted into information, and produced for proper use

Information is retrieved via search queries

                       Keyword search

                       Full-text search

The output can be

                      Text

                       Multimedia

[enigmaticlearner]

“Data” is not simple as we think!

After a short period of time,hello again my friends! Today in our seventh blog article we will be talking about data controlling and few more new topics.

First lets learn what data and information is.Data is naturally unsorted things.

Data becomes information when they are sorted.That is when it becomes useful. Data can come in various formats like,

So data can can be stored, read, updated/modified, and deleted as we need to and thereby they can be organized in a useful manner.

At run time of software systems, data is stored in main memory, which is volatile Therefore data should be stored in non-volatile storage for persistence.

There are two main ways of storing data • Files •Databases

Out of these two types databases have proved to be much efficient. This is due to the advantages that are observed in databases.

Data independence –application programs are independent of the way the data is structured and stored. Efficient data access Enforcing integrity–provide capabilities to define and enforce constraints Ex: Data type for a name should be string Restricting unauthorized access Providing backup and recovery Concurrent access

There are many formats for storing data •Plain-text, XML, JSON, tables, text files, images, etc…

Digging more upto "data" related terms,lets take a brief look at the terms Database and Database Management System.

A database is a place where data is stored.More accurately a database is a collection of related data.Whereas a database management systems (DBMS) is a general-purpose software system that facilitates the processes of defining, constructing, manipulating, and sharing databases among various users and applications.

Also DBMSs are used to connect to the DB servers and manage the DBs and data in them •PHPMyAdmin •MySQL Workbench

In databases data can be arranged in the following manners.. •Un-structured Semi-structured data is data that has not been organized into a specialized repository, such as a database, but that nevertheless has associated information, such as metadata, that makes it more amenable to processing than raw data.

•Semi-structured Structured data is data that has been organized into a formatted repository, typically a database, so that its elements can be made addressable for more effective processing and analysis.

•Structured Unstructured data is information, in many different forms, that doesn't hew to conventional data models and thus typically isn't a good fit for a mainstream relational database.

*SQL-Structered Query Language

SQL-Structered Query Language is used to process data in a databases. Furthermore SQL can be categorized as DDL and DML.

DDL-Data definition language CRUD databases

DML-Data manipulation language CRUD data in databases

•Hierarchical databases •Network databases •Relational databases •Non-relational databases (NoSQL) •Object-oriented databases •Graph databases •Document databases are the types of databases to be found.

** Data warehouse and Big data

Data warehouse and Big data have become two popular topics in the new world.

Data warehouse a system used for reporting and data analysis, and is considered a core component of business intelligence.

Big data is a field that treats ways to analyze, systematically extract information from, or otherwise deal with data sets that are too large or complex to be dealt with by traditional data-processing application software. Big data was originally associated with three key concepts: volume, variety, and velocity.

So how do we use databases in day to day life? To process data in DB we use, •SQL statements •Prepared statements •Callable statements

                                               Connection statement codes

                                              Prepared statement codes

3.Callable statements

CallableStatement cstmt = con.prepareCall("{call anyProcedure(?, ?, ?)}"); cstmt.execute();

Other useful objects are, •Connection

•Statement

•Reader

•Result set

**ORM The mapping of relational objects (ORM, O / RM and O / R) in computer science is a programming technique for converting data between incompatible writing systems using object-oriented programming languages.

ORM implementations in JAVA • Java Beans • JPA

POJO stands for Plain Old Java Object, and would be used to describe the same things as a "Normal Class" whereas a JavaBean follows a set of rules. Most commonly Beans use getters and setters to protect their member variables, which are typically set to private and have a no-argument public constructor.

POJO stands for Plain Old Java Object, and would be used to describe the same things as a "Normal Class" whereas a JavaBean follows a set of rules. Most commonly Beans use getters and setters to protect their member variables, which are typically set to private and have a no-argument public constructor.

Beans Beans are special type of Pojos. There are some restrictions on POJO to be a bean.

POJO Vs Beans

All JavaBeans are POJOs but not all POJOs are JavaBeans. A JavaBean is a Java object that satisfies certain programming conventions: the JavaBean class must implement either Serializable or Externalizable; ... all JavaBean properties must have public setter and getter methods (as appropriate).

* Java Persistence API (JPA) Java Persistence API is a collection of classes and methods to persistently store the vast amounts of data into a database which is provided by the Oracle Corporation.

JPA can be used to reduce the burden of writing codes for relational object management. A programmer follows the ‘JPA Provider’ framework, which allows easy interaction with database instance. Here the required framework is taken over by JPA.

JPA is an open source API.Some of the products are, Eclipselink,Toplink,Hibernate.

**NoSQL SQL databases are commonly known as Relational databases(RDBMs),while NoSQL databases are called non-relational databases or distributed databases.

NoSQL comes in to need when semi-structured and un-structured data are needed to be processed.

It is advantageous to use NoSQL databases as they have high performance, supports both semi-structured and un-structured data,scalability.

MongoDB, BigTable, Redis, RavenDB Cassandra, HBase, Neo4j and CouchDB are examples of NoSQL databases.

You can find more by this link..

https://searchdatamanagement.techtarget.com/definition/NoSQL-Not-Only-SQL

**Hadoop Hadoop is an open source framework implmented by Apache.It is Java based.It is used to process large datasets across clusters of computers distributedly.Hadoop is designed to scale up from single server to thousands of machines, each offering local computation and storage.

Hadoop is consisted of two major layers,

   1.Processing/Computation layer (MapReduce), and    2.Storage layer (Hadoop Distributed File System).

Finally we'll turn into the topic Information retrieval (IR).

This is the activity of obtaining information system resources relevant to an information need from a collection. Searches can be based on full-text or other content-based indexing.

For better results, IR should have the following characteristics. 1. Fast/performance 2. Scalablitiy 3. Efficient 4. Reliable/Correct

References

[1] Wikipedia.com. “ Hadoop ”. [Accessed: April 10, 2019].

[2] TutorialsPoint.com. “JPA”. [Accessed: April 10 , 2019]

[3] TutorialsPoint.com. “Hadoop”. [Accessed: April 10 , 2019].

[cdicdd]

Développeurs Java J2ee

Nous recherchons pour notre propre compte à Casablanca, des Développeurs Java J2ee Sénior et Référents techniques JAVA J2EE qui maîtrisent les technologies suivantes :

• Java8 • JPA 2/EclipseLink • Webservices/CXF • BIRT, iText • Eclipse RCP • GIT, Maven • Junit, Mockito, DBunit • Spring Core, Spring Data, Spring Batch • Suite Atlassian (JIRA, Fisheye, Bamboo, BitBucket…) • Sonar • Oracle

Merci…

[kavindius]

Data Persistence

Introduction to Data Persistence

Information systems process data and convert them into information.

The data should persist for later use;

To maintain the status

For logging purposes

To further process and derive knowledge

Data can be stored, read, updated/modified, and deleted.

At run time of software systems, data is stored in main memory, which is volatile. 

Data should be stored in non-volatile storage for persistence.

Two main ways of storing data

       -  Files

       -  Databases

Data, Files, Databases and DBMSs

Data : Data are raw facts and can be processed and convert into meaningful information.

Data Arrangements 

Un Structured : Often include text and multimedia content. 

Ex: email messages, word processing documents, videos, photos, audio files, presentations, web pages and many other kinds of business documents.

Semi Structured : Information that does not reside in a relational database but that does have some organizational properties that make it easier to analyze.

Ex: CSV but XML and JSON, NoSQL databases

Structured : This concerns all data which can be stored in database SQL in table with rows and columns

Databases : Databases are created and managed in database servers

SQL is used to process databases

      - DDL - CRUD Databases

      - DML - CRUD data in databases

Database Types 

Hierarchical Databases 

In a hierarchical database management systems (hierarchical DBMSs) model, data is stored in a parent-children relationship nodes. In a hierarchical database model, data is organized into a tree like structure.

The data is stored in form of collection of fields where each field contains only one value. The records are linked to each other via links into a parent-children relationship. In a hierarchical database model, each child record has only one parent. A parent can have multiple children

Ex: The IBM Information Management System (IMS) and Windows Registry

Advantages : Hierarchical database can be accessed and updated rapidly

Disadvantages : This type of database structure is that each child in the tree may have only one parent, and relationships or linkages between children are not permitted 

Network Databases

Network database management systems (Network DBMSs) use a network structure to create relationship between entities. Network databases are mainly used on a large digital computers.

A network database looks more like a cobweb or interconnected network of records.

Ex: Integrated Data Store (IDS), IDMS (Integrated Database Management System), Raima Database Manager, TurboIMAGE, and Univac DMS-1100

Relational Databases

In relational database management systems (RDBMS), the relationship between data is relational and data is stored in tabular form of columns and rows. Each column if a table represents an attribute and each row in a table represents a record. Each field in a table represents a data value.

Structured Query Language (SQL) is a the language used to query a RDBMS including inserting, updating, deleting, and searching records. 

Ex: Oracle, SQL Server, MySQL, SQLite, and IBM DB2

Object Oriented model

Object DBMS's increase the semantics of the C++ and Java. It provides full-featured database programming capability, while containing native language compatibility.

It adds the database functionality to object programming languages.

Ex: Gemstone, ObjectStore, GBase, VBase, InterSystems Cache, Versant Object Database, ODABA, ZODB, Poet. JADE

Graph Databases

Graph Databases are NoSQL databases and use a graph structure for sematic queries. The data is stored in form of nodes, edges, and properties.

Ex: The Neo4j, Azure Cosmos DB, SAP HANA, Sparksee, Oracle Spatial and Graph, OrientDB, ArrangoDB, and MarkLogic

ER Model Databases 

An ER model is typically implemented as a database.

In a simple relational database implementation, each row of a table represents one instance of an entity type, and each field in a table represents an attribute type.

Document Databases 

Document databases (Document DB) are also NoSQL database that store data in form of documents.

Each document represents the data, its relationship between other data elements, and attributes of data. Document database store data in a key value form.

Ex: Hadoop/Hbase, Cassandra, Hypertable, MapR, Hortonworks, Cloudera, Amazon SimpleDB, Apache Flink, IBM Informix, Elastic, MongoDB, and Azure DocumentDB

DBMSs : DBMSs are used to connect to the DB servers and manage the DBs and data in them

Data Arrangements

Data warehouse

Big data

                - Volume

                - Variety

                - Velocity

Applications to Files/DB

Files and DBs are external components

Software can connect to the files/DBs to perform CRUD operations on data

                -  File – File path, URL

                -  Databases – Connection string 

To process data in DB

                 - SQL statements

                 - Prepared statements

                 - Callable statements

Useful Objects

o   Connection

o   Statement

o   Reader

o   Result set

SQL Statements - Execute standard SQL statements from the application

Prepared Statements - The query only needs to be parsed once, but can be executed multiple times with the same or different parameters.

Callable Statements - Execute stored procedures

ORM 

Stands for Object Relational Mapping

Different structures for holding data at runtime;

       - Application holds data in objects

       -  Database uses tables  

Mismatches between relational and object models

o   Granularity – Object model has more granularity than relational model.

o   Subtypes – Subtypes are not supported by all types of relational databases.

o   Identity – Relational model does not expose identity while writing equality.

o   Associations – Relational models cannot determine multiple relationships while looking into an object domain model.

o   Data navigations – Data navigation between objects in an object network is different in both models.

ORM implementations in JAVA

JavaBeans

JPA (JAVA Persistence API)

Beans use POJO

POJO stands for Plain Old Java Object.

It is an ordinary Java object, not bound by any special restriction

POJOs are used for increasing the readability and re-usability of a program

POJOs have gained most acceptance because they are easy to write and understand

A POJO should not;·      

Extend pre-specified classes

Implement pre-specified interfaces

Contain pre-specified annotations

Beans

Beans are special type of POJOs

All JavaBeans are POJOs but not all POJOs are JavaBeans    

Serializable

Fields should be private

Fields should have getters or setters or both

A no-arg constructor should be there in a bean

Fields are accessed only by constructor or getters setters

POJO/Bean to DB

Java Persistence API

The above architecture explains how object data is stored into relational database in three phases.

Phase 1

The first phase, named as the Object data phase contains POJO classes, service interfaces and classes. It is the main business component layer, which has business logic operations and attributes.

Phase 2

The second phase named as mapping or persistence phase which contains JPA provider, mapping file (ORM.xml), JPA Loader, and Object Grid

Phase 3

The third phase is the Relational data phase. It contains the relational data which is logically connected to the business component.

JPA Implementations

Hybernate

EclipseLink

JDO

ObjectDB

Caster

Spring DAO

NoSQL and HADOOP

Relational DBs are good for structured data and for semi-structured and un-structured data, some other types of DBs can be used.

-        Key value stores

-        Document databases

-        Wide column stores

-        Graph stores

Benefits of NoSQL

Compared to relational databases, NoSQL databases are more scalable and provide superior performance

Their data model addresses several issues that the relational model is not designed to address

NoSQL DB Servers

o   MongoDB

o   Cassandra

o   Redis

o   Hbase

o   Amazon DynamoDB

HADOOP

It is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models

It is designed to scale up from single servers to thousands of machines, each offering local computation and storage

HADOOP Core Concepts

HADOOP Distributed File System

               -  A distributed file system that provides high-throughput access to application data

HADOOP YARN

               -   A framework for job scheduling and cluster resource management

HADOOP Map Reduce

               -   A YARN-based system for parallel processing of large data sets

Information Retrieval

Data in the storages should be fetched, converted into information, and produced for proper use

Information is retrieved via search queries

1.     Keyword Search

2.     Full-text search

The output can be

1.     Text

2.     Multimedia

The information retrieval process should be;

Fast/performance

Scalable

Efficient

Reliable/Correct

Major implementations

Elasticsearch

Solr

Mainly used in search engines and recommendation systems

Additionally may use

Natural Language Processing

AI/Machine Learning

Ranking

References

https://www.tutorialspoint.com/jpa/jpa_orm_components.htm

https://www.c-sharpcorner.com/UploadFile/65fc13/types-of-database-management-systems/ 

[craigbrownphd-blog-blog]

SAP S/4HANA Cloud SDK: Version 1.8.0 is Available

The new version of the SAP S/4HANA Cloud SDK Java libraries is available since today. You can update your dependencies to version 1.8.0 and consume the new version from Maven Central. In this blog post, we will walk you through the highlights of these releases. For a complete overview, visit our release notes for the Java libraries. The release notes also include the change log of all our releases so far. At the end of the article, you will find a set of instructions on how to update to the new version. Java Libraries: Release Highlights Note: If you are using the SAP S/4HANA Cloud SDK in the Neo environment of SAP Cloud Platform, please note that there is a bug in the SDK that affects multi-tenant applications on Neo. We recommend NOT to update to version 1.8.0 in case of a multi-tenant application on Neo. Instead, wait for the next release of the SAP S/4HANA Cloud SDK, in which we plan to fix this bug. You can safely proceed to update the SDK version in Cloud Foundry applications. --- As part of the SAP S/4HANA Cloud SDK, we also provide integration to popular third party frameworks on SAP Cloud Platform, for example Togglz or EclipseLink. Another example is Apache CXF; an open-source framework for developing services. With this version, we have extracted the JAX-RS specific functionality of the Apache CXF integration module into a seperate module com.sap.cloud.s4hana.frameworks:jaxrs to make it easier to leverage the corresponding functionality such as JSON message (de)serialization and error handling in applications that do not use Apache CXF. The Javadoc of the SAP Cloud Platform abstractions (classes in packages com.sap.cloud.sdk.cloudplatform.*) has been improved to make it easier to use the corresponding functionality of the SAP S/4HANA Cloud SDK, which provides simple and transparent access to Cloud Platform features such as connectivity, security, tenants or audit logging, on both Cloud Foundry and Neo. We have improved the contracts of methods for handling tenant, user and secret store by introducing more specific exceptions. We have also changed names and packages of several classes – please take a close look at the compatibility notes for the full list of changes. On some developer machines, deploying the app on the local TomEE server based on the scp-cf-tomee archetype may have failed previously with exceptions such as java.lang.NoSuchMethodError: org.apache.tomcat.util.ExceptionUtils.preload()V. We have resolved this issue by removing the tomcat-catalina lib from the TomEE Maven plugin configuration in the application/pom.xml file as generated by scp-cf-tomee archetype. Newly generated project will no longer produce this error. If you have previously generated a project using that archetype and experience the same issue, manually remove the following lines at the end of application/pom.xml: org.apache.tomcat:tomcat-catalina:7.0.82 We have also fixed several further issues as explained in the full release notes. How to Update: Java Libraries Note: As mentioned above, we recommend NOT to update the SDK for a multi-tenant application on Neo. To update the version of the SAP S/4HANA Cloud SDK Java libraries used in an existing project on Cloud Foundry, proceed as follows: * Open the pom.xml file in the root folder of your project. * Locate the dependency management section and therein the sdk-bom dependency. * Update the version of that dependency to 1.8.0. With this, you are already done thanks to the “bill of material” (BOM) approach. Your dependency should look like this: com.sap.cloud.s4hana sdk-bom 1.8.0 pom import You can now recompile your project (be aware of the compatibility notes, though) and leverage the new features of the SAP S/4HANA Cloud SDK in version 1.8.0. Of course, you can also generate a new project that uses version 1.8.0 from the start by running the Maven archetypes for Cloud Foundry with -DarchetypeVersion=1.8.0 (or RELEASE). http://bit.ly/2BNYdsy #SAP #SAPCloud #AI

[macronimous]

How to map #PostgreSQL ARRAY type to List using JPA and EclipseLink https://t.co/dDTq3LDWJ1 #Database https://t.co/Jph4rG0Jw0

How to map #PostgreSQL ARRAY type to List using JPA and EclipseLink https://t.co/dDTq3LDWJ1 #Database pic.twitter.com/Jph4rG0Jw0

— Macronimous.com (@macronimous) September 16, 2020

from Twitter https://twitter.com/macronimous September 17, 2020 at 12:22AM via IFTTT

[cvwing1]

SOA Specialist in PA

SOA Specialist Harrisburg PA Description: The Department of Environmental Protection is seeking a Technical Specialist that possesses strong software engineering skills, and strong development background to build a Web services. The successful candidate for this position must possess strong software engineering skills, and a strong development background to build a Web services. This position will be responsible for building the SOA web service, leveraging OWSM security, CEP, UDDI, Oracle Identity Manager (LDAP) frameworks. The candidate is asked to perform tasks such as to design, develop Java / J2EE applications and services, execute test plans, co-ordinate, implement and deploy software in multiple environments. This position will act as a lead on the SOA team and contribute end to end design, development and delivery activities to implement secure data exchange infrastructure application solution. Minimum Qualifications: Over 5 years of extensive development experience in a SOA environment Over 5 years of Hands-on experience implementing SOA/OSB 5+ years of deep understanding of SOA, OSB, API 5 years of experience in complex SOA / integration projects, specifically in Service Bus, Mediator, BPEL, WSDL, SOA delivery Proficiency in application tools/languages such as: OSB, Oracle SOA 11g, JDeveloper, Eclipse/OEPE, SOAP, SOAPUI, BPEL, XML, XSD, UDDI, XSLT, REST/JSON, JMS, Unit testing frameworks 3+ yrs of strong experience in implementing J2EE Design Patterns for module designs 5+ yrs of experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate. 7+ yrs of experience in building complex enterprise applications using JAVA / J2EE technologies 5+ yrs of experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite 5+ yrs of experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task 5+ yrs of experience in using OER & OSR or any other Repository 5+ yrs of experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS 5+ yrs of experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs 5+ yrs of Java programming in XML using JAXB, SAX and DOM 5+ yrs of experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. Preferred Qualifications: Very good understating on server side implementation of the modules including distributed deployments, thread management and garbage collection configurations to optimize the performance of the application 7+ yrs Strong debugging and troubleshooting skills 5+ yrs of experience in implementing Java/J2EE solutions using WebLogic and Tomcat 5+ yrs of strong JDBC programming experience in using Open JPA and other ORM tools like Spring Hibernate, Eclipselink etc., 5+ yrs of strong SQL and Database Programming Skills using Oracle. Experience with SOA principles (loose coupling, reusability, synchronicity, high availability, scalability), SOA design patterns and integration patterns 5+ yrs of SOA governance experience, involving design with common integration patterns, common reusable modules, standards based business object definition, review the technical solutions and conforming developed code to a set of standards Conversant with emerging technologies & tools in SOA space 5+ yrs of XML experience, including schema design/extensions, XML parsing with XSLT, XPath, XQuery 1+ yrs experience using Build/Dependency Management ? Maven or Ant 3+ yrs of understanding and working with security Frameworks ? Web service Security and Java Security Participate in strategic initiatives relating to system development and enhancements Contribute to system delivery specifications and technical design specifications. Develop and test the components as per the specification Participate in all phases of projects Manage individual tasks and deliverables in order to complete projects on schedule Execute on design and development consistent with approved enterprise architecture concepts, principles and frameworks. Work closely with the team and demonstrate leadership activity in the development 5+ yrs Web Servers- WebLogic and/or other JEE Application Servers 5+ yrs Database ? Oracle, PL/SQL Stored Procedures strongly desired 5+ yrs Operating Systems and Environments ? Unix/Linux, Windows Ability to do some shell or Perl scripting 5+ yrs Application Architecture and Design ? Enterprise Integration Patterns; Object Oriented Programming; Aspect Oriented Programming; Java Design Patterns; SOA Architecture/Design Proven ability in application design and development of enterprise solutions Expert understanding of the software development process including analysis, design, coding, system and user testing, problem resolution and planning Understanding in User Interface design and web based technologies Understanding in service oriented development and best practices Deep understanding of distributed systems Technical leadership and decision making abilities Understanding of Services Industry and specifically Securities domain is a huge plus Understanding/Experience developing and designing in an Agile methodology strongly preferred Familiarity with WebSSO technologies such as CA eTrust, SiteMinder or Entrust GetAccess. Familiarity with Source code control systems such as SVN, ClearCase or Microsoft Visual SourceSafe. Familiarity with fundamentals of software configuration management, automated build processes, and source code control systems. 5+ yrs Experience in business to business (B2B) environments and cloud base service deployment. Skills Extensive development experience in a SOA environment Hands-on experience implementing SOA/OSB Deep understanding of SOA, OSB, API Experience in complex SOA / integration projects (refer to details tab for listing) Strong experience in implementing J2EE Design Patterns for module designs Experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate Experience in building complex enterprise applications using JAVA / J2EE technologies Experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite Experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task Experience in using OER & OSR or any other Repository Experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS Experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs Java programming in XML using JAXB, SAX and DOM Experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. -- Reference : SOA Specialist in PA jobs from Latest listings added - cvwing http://cvwing.com/jobs/technology/soa-specialist-in-pa_i13179

[linkhello1]

SOA Specialist in PA

SOA Specialist Harrisburg PA Description: The Department of Environmental Protection is seeking a Technical Specialist that possesses strong software engineering skills, and strong development background to build a Web services. The successful candidate for this position must possess strong software engineering skills, and a strong development background to build a Web services. This position will be responsible for building the SOA web service, leveraging OWSM security, CEP, UDDI, Oracle Identity Manager (LDAP) frameworks. The candidate is asked to perform tasks such as to design, develop Java / J2EE applications and services, execute test plans, co-ordinate, implement and deploy software in multiple environments. This position will act as a lead on the SOA team and contribute end to end design, development and delivery activities to implement secure data exchange infrastructure application solution. Minimum Qualifications: Over 5 years of extensive development experience in a SOA environment Over 5 years of Hands-on experience implementing SOA/OSB 5+ years of deep understanding of SOA, OSB, API 5 years of experience in complex SOA / integration projects, specifically in Service Bus, Mediator, BPEL, WSDL, SOA delivery Proficiency in application tools/languages such as: OSB, Oracle SOA 11g, JDeveloper, Eclipse/OEPE, SOAP, SOAPUI, BPEL, XML, XSD, UDDI, XSLT, REST/JSON, JMS, Unit testing frameworks 3+ yrs of strong experience in implementing J2EE Design Patterns for module designs 5+ yrs of experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate. 7+ yrs of experience in building complex enterprise applications using JAVA / J2EE technologies 5+ yrs of experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite 5+ yrs of experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task 5+ yrs of experience in using OER & OSR or any other Repository 5+ yrs of experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS 5+ yrs of experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs 5+ yrs of Java programming in XML using JAXB, SAX and DOM 5+ yrs of experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. Preferred Qualifications: Very good understating on server side implementation of the modules including distributed deployments, thread management and garbage collection configurations to optimize the performance of the application 7+ yrs Strong debugging and troubleshooting skills 5+ yrs of experience in implementing Java/J2EE solutions using WebLogic and Tomcat 5+ yrs of strong JDBC programming experience in using Open JPA and other ORM tools like Spring Hibernate, Eclipselink etc., 5+ yrs of strong SQL and Database Programming Skills using Oracle. Experience with SOA principles (loose coupling, reusability, synchronicity, high availability, scalability), SOA design patterns and integration patterns 5+ yrs of SOA governance experience, involving design with common integration patterns, common reusable modules, standards based business object definition, review the technical solutions and conforming developed code to a set of standards Conversant with emerging technologies & tools in SOA space 5+ yrs of XML experience, including schema design/extensions, XML parsing with XSLT, XPath, XQuery 1+ yrs experience using Build/Dependency Management ? Maven or Ant 3+ yrs of understanding and working with security Frameworks ? Web service Security and Java Security Participate in strategic initiatives relating to system development and enhancements Contribute to system delivery specifications and technical design specifications. Develop and test the components as per the specification Participate in all phases of projects Manage individual tasks and deliverables in order to complete projects on schedule Execute on design and development consistent with approved enterprise architecture concepts, principles and frameworks. Work closely with the team and demonstrate leadership activity in the development 5+ yrs Web Servers- WebLogic and/or other JEE Application Servers 5+ yrs Database ? Oracle, PL/SQL Stored Procedures strongly desired 5+ yrs Operating Systems and Environments ? Unix/Linux, Windows Ability to do some shell or Perl scripting 5+ yrs Application Architecture and Design ? Enterprise Integration Patterns; Object Oriented Programming; Aspect Oriented Programming; Java Design Patterns; SOA Architecture/Design Proven ability in application design and development of enterprise solutions Expert understanding of the software development process including analysis, design, coding, system and user testing, problem resolution and planning Understanding in User Interface design and web based technologies Understanding in service oriented development and best practices Deep understanding of distributed systems Technical leadership and decision making abilities Understanding of Services Industry and specifically Securities domain is a huge plus Understanding/Experience developing and designing in an Agile methodology strongly preferred Familiarity with WebSSO technologies such as CA eTrust, SiteMinder or Entrust GetAccess. Familiarity with Source code control systems such as SVN, ClearCase or Microsoft Visual SourceSafe. Familiarity with fundamentals of software configuration management, automated build processes, and source code control systems. 5+ yrs Experience in business to business (B2B) environments and cloud base service deployment. Skills Extensive development experience in a SOA environment Hands-on experience implementing SOA/OSB Deep understanding of SOA, OSB, API Experience in complex SOA / integration projects (refer to details tab for listing) Strong experience in implementing J2EE Design Patterns for module designs Experience in Business Process and Rules engines such as jBPM and DROOLS. Must know how to configure and administrate Experience in building complex enterprise applications using JAVA / J2EE technologies Experience in design, development, testing and deployment of SOA Suite and OSB/ESB based applications for Oracle SOA product suite Experience in BPEL orchestration and using Mediator, Adapters, Workflow and human task Experience in using OER & OSR or any other Repository Experience in developing SOAP (JAX-WS) and RESTful (JAX-RS) Web Services using Spring Web Service, Apache CXF, JERSEY and AXIS Experience in using JMS (QUEUE and TOPICs) for building messaging related solutions using MDBs Java programming in XML using JAXB, SAX and DOM Experience with IDEs like Eclipse, Jdeveloper, Spring Suite etc. -- Reference : SOA Specialist in PA jobs from Latest listings added - LinkHello http://linkhello.com/jobs/technology/soa-specialist-in-pa_i10257