JavaScript - Why to use "var that = this;"

Now a days most of JavaScript files are following Object Oriented Approach.

In simple words, it means it is possible to call super methods using child classes.

So not to lose a reference of function which is calling other one, that is smartly getting used.

Below are good examples explaining about that to refer this:

Keep sharing….!

III

Best Regards,

Abhijeet Rathod.

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When 'I' is replaced by 'We',

Even illness becomes wellness.

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WebLogic 10.3.x Error : NoSuchMethodError for javax.persistence.spi.PersistenceUnitInfo.getSharedCacheMode()Ljavax/persistence/SharedCacheMode

As of now mostly trend is using newer frameworks or migrating from older framework to newer one.

One of the classic situation we started facing with Application Deployment once we have done migration.

Technology Stack we are using in our Applications is as below:

·         Java 7
·         JPA 2.0
·         Spring 3.0
·         Hibernate 3.0
·         EJB 3.0
·         Oracle 11g

While deploying we are getting below exception:

Caused By: java.lang.NoSuchMethodError: javax.persistence.spi.PersistenceUnitInfo.getSharedCacheMode()Ljavax/persistence/SharedCacheMode; at org.hibernate.ejb.util.LogHelper.logPersistenceUnitInfo(LogHelper.java:39) at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:516) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73) at weblogic.deployment.PersistenceUnitInfoImpl.createEntityManagerFactory(PersistenceUnitInfoImpl.java:352) at weblogic.deployment.PersistenceUnitInfoImpl.createEntityManagerFactory(PersistenceUnitInfoImpl.java:332)

In development environment we are using below for deployment:

·         WebLogic 12
·         Oracle 11g

So what is cause for this?

·         Pre-Production and Production environment having:

o   WebLogic 10.3.5

o   Oracle 11g

As database point of view there is no issue.

So it's mostly application server compatibility issue.

JPA Jars which WebLogic 10.3.5 is having are of different versions than application requires.

So as to resolve this issues, following are 2 possible solutions:

·         Application Level Changes:

o   Adding ANTLR specific changes to be done in weblogic-application.xml file located under META-INF.

<?xml version="1.0" encoding="UTF-8"?> <weblogic-application xmlns="http://www.oracle.com/technology/weblogic/wls_10.3.2.0.html" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">        <!--  This is needed since WL has a different version of antlr jar-->     <prefer-application-packages>         <package-name>antlr.*</package-name>     </prefer-application-packages>     </weblogic-application>

o   Adding JPA specific JARs to application WAR/EAR only.

§  Hibernate-jpa-api.jar

§  Weblogic-fullclient.jar

·         WebLogic Level – Configuration changes:

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III  Best Regards,

III  Abhijeet.