About retrieve

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Manual
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JPA Query API

, the same JPQL query which retrieves all the Country objects in the database is represented by both q1
Manual
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ObjectDB 2.8 Developer's Guide

.             Shows how to use JPA to store, retrieve, update and delete database objects.             Explains
Result
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ObjectDB Object Database Features

are retrieved from the database automatically by navigating from other managed objects. Transparent
Manual
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Paths and Types in JPQL and Criteria API

through a NULL value The following query retrieves country names with their capital city names: SELECT
Result
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About ObjectDB Database

ObjectDB Object Database ObjectDB is a powerful Object-Oriented Database Management System (ODBMS). It is compact, reliable, easy to use and extremely fast. ObjectDB provides all the standard database management services (storage and retrieval, transactions, lock management, query processing
Tutorial
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Step 2: Define a JPA Entity Class

that stores and retrieves instances of the Point entity class.
Tutorial
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Step 2: Define a JPA Entity Class

class that stores and retrieves instances of the Point entity class.
Tutorial
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Step 3: Add a Context Listener Class

starts (contextInitialized). Retrieves the EntityManagerFactory from the application scope attribute
Tutorial
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Step 3: Add a Context Listener Class

attribute in the servlet context - when the web application starts (contextInitialized). Retrieves
Tutorial
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Step 4: Add a Servlet Class

are retrieved from the database and stored in the request's "guest" attribute. Then the processing