About INSERT INTO

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Tutorial
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Step 4: Add a Servlet Class

session bean, which is instantiated and injected by the application server into the guestDao field
Tutorial
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JPA Web App Tutorial - Eclipse Project

only if Maven Integration for WTP is installed when the Maven project is imported into the IDE). Choose or
Manual
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DELETE Queries in JPA/JPQL

As explained in chapter 2, entity objects can be deleted from the database by: Retrieving the entity objects into an EntityManager. Removing these objects from the EntityManager within an active transaction, either explicitly by calling the remove method or implicitly by a cascading operation
Manual
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UPDATE SET Queries in JPA/JPQL

Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity objects into an EntityManager. Updating the relevant entity object fields within an active transaction. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide
Tutorial
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Step 4: Add a Controller Class

is automatically constructed and injected by Spring into the guestDao field (because it is annotated
Manual
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JPA Primary Key

is defined the primary key value is automatically injected into that field by ObjectDB
Manual
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UPDATE SET Queries in JPA/JPQL [2011-11-22]

Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity objects into an EntityManager. Updating the relevant entity object fields within an active transaction. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide
JPA Doc
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JPA 2 Annotations

JPA defines dozens of annotations that can be divided into the following groups: Annotations for JPA aware classes: Annotations for fields in JPA persistable classes: Annotations for additional JPA configuration: Annotations for JPA lifecycle event callbacks: Java EE container annotations: Many
Manual
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Retrieving JPA Entity Objects

situations this might cause the retrieval of the entire database into the memory, which is usually
Tutorial
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Step 6: Set the Spring XML

To integrate the Spring Framework into a web application we have to add the definition of the Spring dispatcher servlet to the web.xml configuration file and to configure that servlet using another xml configuration file. Open the web.xml file (under src/main/webapp/WEB-INF) in a text editor (by