Package org.apache.olingo.odata2.jpa.processor.api.access

Class JPAJoinClause

java.lang.Object

org.apache.olingo.odata2.jpa.processor.api.access.JPAJoinClause

public class JPAJoinClause
extends Object

A container for Java Persistence Join Clause that can be used for building JPQL statements. The container has two main elements

1. Java Persistence Entity - is the source entity participating in the join.
   
2. Java Persistence Entity Relationship - is the entity relationship of the source entity participating in the join.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JPAJoinClause.JOIN	Enumerated list of possible Joins in JPQL LEFT - left outer join FETCH - enable fetching of an association as a side effect of the execution of a query INNER - inner join

Constructor Summary

Constructors

Constructor	Description
JPAJoinClause(String entityName, String entityAlias, String entityRelationShip, String entityRelationShipAlias, String joinCondition, JPAJoinClause.JOIN joinType)	Constructor for creating elements of JPA Join Clause container.

Method Summary

Modifier and Type	Method	Description
String	getEntityAlias()	The method returns Java Persistence Entity alias name participating in the join.
String	getEntityName()	The method returns Java Persistence Entity participating in the join.
String	getEntityRelationShip()	The method returns Java Persistence Entity Relationship name participating in the join.
String	getEntityRelationShipAlias()	The method returns Java Persistence Entity Relationship Alias name participating in the join.
String	getJoinCondition()	The method returns a join condition that can be used for building JPQL join statements.
JPAJoinClause.JOIN	getJoinType()	The method returns the type of JPAJoinClause.JOIN that can be used for building JPQL join statements.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JPAJoinClause

public JPAJoinClause(String entityName,
                     String entityAlias,
                     String entityRelationShip,
                     String entityRelationShipAlias,
                     String joinCondition,
                     JPAJoinClause.JOIN joinType)

Constructor for creating elements of JPA Join Clause container.

Parameters:

entityName - is the name of the JPA entity participating in the join

entityAlias - is the alias for the JPA entity participating in the join

entityRelationShip - is the name of the JPA entity relationship participating in the join

entityRelationShipAlias - is the alias name of the JPA entity relationship participating in the join

joinCondition - is the condition on which the joins should occur

joinType - is the type of join JPAJoinClause.JOIN to execute

Method Detail

getEntityName

public String getEntityName()

The method returns Java Persistence Entity participating in the join.

Returns:

an entity name

getEntityAlias

public String getEntityAlias()

The method returns Java Persistence Entity alias name participating in the join.

Returns:

a entity alias name

getEntityRelationShip

public String getEntityRelationShip()

The method returns Java Persistence Entity Relationship name participating in the join.

Returns:

entity alias relationship

getEntityRelationShipAlias

public String getEntityRelationShipAlias()

The method returns Java Persistence Entity Relationship Alias name participating in the join.

Returns:

entity entity relationship alias

getJoinCondition

public String getJoinCondition()

The method returns a join condition that can be used for building JPQL join statements.

Returns:

a join condition

getJoinType

public JPAJoinClause.JOIN getJoinType()

The method returns the type of JPAJoinClause.JOIN that can be used for building JPQL join statements.

Returns:

join type