About JBoss AS

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JDO Doc
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JDO Predefined ID Classes

a unique representation of a persistent object. The following classes serve as predefined ID classes ... but should not be used as the type of a primary key field in a persistence capable class. For example ... instances of MyClass) can be represented uniquely by StringIdentity, as a combination of a class and a string value.
Manual
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BIRT/ODA ObjectDB Driver

The ObjectDB BIRT/ODA driver is an extension of the open source Business Intelligence and Reporting Tools (BIRT) that adds support of ObjectDB as a data source and JPQL as a data set query language ... and JPA tutorial. Driver Installation The driver is available as an Eclipse for Java EE Developers
Tutorial
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Step 5: Design a BIRT Report Chart

the [Select Chart Type] tab select Tube as the chart type and click Next. In the [Select Data] tab - enter row["y"] as the Y series and row["x"] as the X series, (use Ctrl + Space in these fields
Tutorial
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Step 4: Create an ObjectDB Data Set

Queries against the database are represented in BIRT as data sets. To create the data set: Open the [New Data Set] dialog box by right clicking the Data Sets node in the [Data Explorer] window ... a specified range: SELECT p.x as x, p.y as y FROM Point p WHERE p.x BETWEEN :low AND :high Use copy
Manual
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Detached Entity Objects

serialized object) is constructed as a detached entity object since is not associated with any ... Address instance, which is then automatically detached as well. Cascading may continue recursively ... Address instance, which is then automatically merged as well. Cascading may continue recursively
Manual
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JPA Named Queries

carefully to avoid collision (e.g. by using the unique entity name as a prefix). It makes sense ... queries to the same entity class requires wrapping them in a @NamedQueries annotation, as follows ... still might fail if that named query is defined on a class that is still unknown to ObjectDB. As a workaround
Manual
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Chapter 4 - JPA Queries (JPQL / Criteria) [2011-04-01]

The JPA Query Language (JPQL) can be considered as an object oriented version of SQL. Users familiar with SQL should find JPQL very easy to learn and use. This chapter explains how to use JPQL as well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA
Manual
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JPA Metamodel API

 (which are referred to as managed types) in the persistent object model. Three methods can be used ... . IdentifiableType is as a super interface of: MappedSuperclassType - represents user defined mapped ... for exploring managed fields and properties (which are referred to as attributes). For example
Tutorial
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Step 2: Entity Class and Persistence Unit

 Next). Enter Guest as the class name - use exactly that case sensitive class name. Enter guest as the package ... > Now ObjectDB should be used as a JPA provider with the specified database url. The next step
Manual
2

Chapter 4 - JPA Queries (JPQL / Criteria) [2018-09-15]

The JPA Query Language (JPQL) can be considered as an object oriented version of SQL. Users familiar with SQL should find JPQL very easy to learn and use. This chapter explains how to use JPQL as well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA