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7

Paths and Types in JPQL and Criteria API

through a NULL value The following query retrieves country names with their capital city names: SELECT
7

Literals in JPQL and Criteria Queries

retrieval by type. In JPQL an entity type literal is written simply as the name of the entity class (e.g
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Step 3: Add a Context Listener Class

attribute in the servlet context - when the web application starts (contextInitialized). Retrieves
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Getting Started with JPA and Eclipse

This is the Eclipse version of the Quick Start with JPA tutorial. It demonstrates how to create and run a simple JPA application in Eclipse. The demonstrated application uses JPA to store and retrieve simple Point entity objects, where each Point has two persistent fields: x and y
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Step 5: Add a JSP Page

that have already signed (which are retrieved from the request's "guests" attribute that is set by
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Step 5: Add a JSP Page

the guestbook, followed by a list of all the guests that have already signed (which are retrieved from
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Step 4: Add a Servlet Class

. All the Guest entity objects are retrieved from the database and stored in the request's "guest
1

Step 5: Add a JSP Page

that have already signed (which are retrieved from the request's guestDao attribute that is set by the controller in
0

[ODB1] Chapter 4 - JDO Metadata

. When a persistent object is retrieved from the database its fields are not ready yet. Only when the program
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[ODB1] Chapter 1 - About ObjectDB

is Very Fast ObjectDB has very good performance. It can store and retrieve thousands of objects

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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