About Metadata API

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JPA Doc
58

JPA Metamodel API Types

The following interfaces and enum represent types in the JPA Metamodel API:  See the Metamodel Type Interface Hierarchy section for more details and examples.
JPA Doc
58

JPA Metamodel API Attributes

The following interfaces and enum types represent attributes (persistent fields and properties) in the JPA Metamodel API: See the Metamodel Attribute Interface Hierarchy section for more details and examples.
FAQ
55

ObjectDB APIs

All about ObjectDB APIs in Java/JPA database - explanations, examples, references, links and related information.
Manual
55

FROM clause (JPQL / Criteria API)

Explains how to use the FROM clause and JOIN expressions in a JPA/JPQL query.
Manual
55

Comparison in JPQL and Criteria API

Explains how comparison operators can be used in JPQL queries, including in comparing null values.
Manual
55

Logical Operators in JPQL and Criteria API

Explains how to use AND, OR and NOT in JPQL queries.
JDO Doc
29

JDOPermission.GET_METADATA

Static Field javax.jdo.spi.JDOPermission JDOPermission GET_METADATA An instance of JDOPermission to be used for getMetadata permission checking. Since: JDO 1.0
JDO Doc
29

JDOPermission.MANAGE_METADATA

Static Field javax.jdo.spi.JDOPermission JDOPermission MANAGE_METADATA An instance of JDOPermission to be used for manageMetadata permission checking. Since: JDO 1.0.2
JDO Doc
15

javax.jdo.Constants

query metadata file. The name of the resource for the DTD of the standard JDO query metadata file ... JDOQUERY_XSD_RESOURCE The name of the resource for the XML schema of the standard JDO query metadata file. The name of the resource for the XML schema of the standard JDO query metadata file. Since: JDO 2
Manual
14

Chapter 4 - JPA Queries (JPQL / Criteria)

well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA, based on JPQL. The first section describes the API that JPA provides for using dynamic and static