org.tentackle.persist.wurblet

Class ComponentJoin

java.lang.Object

org.tentackle.persist.wurblet.ComponentJoin

public class ComponentJoin
extends Object

Describes the join to a component's attribute.

Author:

harald

Constructor Summary

Constructors

Constructor and Description
ComponentJoin(DbModelWurblet wurblet, org.tentackle.model.Entity entity, org.tentackle.model.Entity joinedEntity) Creates a component join from a wurblet parameter.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
org.tentackle.model.Entity	getEntity() Gets the entity to join to (left side of the join).
String	getExtraClassName() Returns the extra classname to be joined by id. Necessary for multi-table inherited joins if attribute belongs to child class.
org.tentackle.model.Entity	getJoinedEntity() Gets the entity to join (right side of the join).
String	getRootIdClassName() Gets the implementing classname holding the root id.
String	getRootIdColumnName() Gets the column name holding the rootid.
int	hashCode()
boolean	isExtraJoinNecessary() Returns whether the joined attribute belongs to another table than that holding the rootid.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentJoin

public ComponentJoin(DbModelWurblet wurblet,
                     org.tentackle.model.Entity entity,
                     org.tentackle.model.Entity joinedEntity)
              throws org.wurbelizer.wurbel.WurbelException

Creates a component join from a wurblet parameter.

Parameters:

wurblet - the wurblet

entity - the entity to join to (left side of the join)

joinedEntity - the entity to join (right side of the join)

Throws:

org.wurbelizer.wurbel.WurbelException - if given parameter is not a component key

Method Detail

getEntity

public org.tentackle.model.Entity getEntity()

Gets the entity to join to (left side of the join).

Returns:

the entity

getJoinedEntity

public org.tentackle.model.Entity getJoinedEntity()

Gets the entity to join (right side of the join).

Returns:

the joined entity

isExtraJoinNecessary

public boolean isExtraJoinNecessary()

Returns whether the joined attribute belongs to another table than that holding the rootid.

Returns:

true if extra join needed

getExtraClassName

public String getExtraClassName()

Returns the extra classname to be joined by id.
Necessary for multi-table inherited joins if attribute belongs to child class.

Returns:

the extra classname

getRootIdClassName

public String getRootIdClassName()

Gets the implementing classname holding the root id.

Returns:

the class name

getRootIdColumnName

public String getRootIdColumnName()

Gets the column name holding the rootid.

Returns:

the column name

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object