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About named queries

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Forum
15

Is named-query supported in orm.xml

I prefer to keep custom JPQL named queries in an external file, e.g. orm.xml, rather than in the entity classes, for example: <named-query name= "DataValue.deleteByCapabilityAndCreationtime ... and d.creationtime <= :creationtime query> named-query
Manual
15

Schema Update

abilities: name="com.example.old1" new-name="com.example.new1" /> name="com.example.old2" new-name="com.example.new2"> name="A" new-name="NewA" /> name="B"> name="f1" new-name="newF1" /> name="f2" new-name="newF2
JPA Doc
14

javax.persistence.EntityManager

- if not an entity Since: JPA 1.0 Query createNamedQuery(String name) Create an instance of Query for executing a named query (in the Java Persistence query language or in native SQL). Create an instance of Query for executing a named query (in the Java Persistence query language or in native SQL
Manual
14

Retrieving JPA Entity Objects

object (e.g. the name of the manager in the example above) causes the retrieval of missing content from ... object. Retrieval by Query The most flexible method for retrieving objects from the database is to use queries. The official query language of JPA is JPQL (Java Persistence Query Language). It enables
Manual
14

Shared (L2) Entity Cache

. Cache of query programs. Cache of query execution results. The scope of these server side caches ... unit property:    name="my-pu">      ...             name="javax.persistence.sharedCache.mode" value="ALL"/>     
JDO Doc
14

getPersistenceManagerFactory(overrides, name, resourceLoader, pmfLoader)

 overrides,   String name,   ClassLoader resourceLoader,   ClassLoader pmfLoader ) Returns a PersistenceManagerFactory configured based on the properties stored in the resource at name, or, if not found, returns a PersistenceManagerFactory with the given name or, if not found, returns a javax
Issue
13

Named Query Exception

to create a query using a closed EntityManager. If this is the case, a better error message
Manual
13

General Settings and Logging

" /> name="*" level="info" /> The element
Manual
13

Logical Operators in JPQL and Criteria API

Logical operators in JPQL and in JPA criteria queries enable composition of complex JPQL boolean ... , the JDO Query Language). ObjectDB supports both forms. Binary AND (&&) Operator The following query ... The following query retrieves countries whose population or area exceeds a specified limit: SELECT c FROM
JPA Doc
12

JoinColumn.name

Annotation Element javax.persistence.JoinColumn String name (Optional) The name of the foreign key ... of the following: the name of the referencing relationship property or field of the referencing entity or embeddable class; "_"; the name of the referenced primary key column. If there is no such referencing