org.apache.jdo.impl.model.jdo.caching

Class JDOMapImplCaching

java.lang.Object

org.apache.jdo.impl.model.jdo.JDOElementImpl

org.apache.jdo.impl.model.jdo.JDORelationshipImpl

org.apache.jdo.impl.model.jdo.JDOMapImplDynamic

org.apache.jdo.impl.model.jdo.caching.JDOMapImplCaching

All Implemented Interfaces:

JDOElement, JDOMap, JDORelationship

public class JDOMapImplCaching
extends JDOMapImplDynamic

An instance of this class represents the JDO relationship metadata (the treatment of keys and values) of a map relationship field. This caching implementation caches any calulated value to avoid re-calculating it if it is requested again.

Since:

1.1

Version:

2.0

Author:

Michael Bouschen

Field Summary

Fields inherited from class org.apache.jdo.impl.model.jdo.JDOMapImplDynamic

embeddedKey, embeddedValue, keyType, valueType

Fields inherited from class org.apache.jdo.impl.model.jdo.JDORelationshipImpl

inverse, mappedBy

Fields inherited from interface org.apache.jdo.model.jdo.JDORelationship

CARDINALITY_N, CARDINALITY_ONE, CARDINALITY_ZERO

Constructor Summary

Constructors

Constructor and Description
JDOMapImplCaching()

Method Summary

Methods

Modifier and Type	Method and Description
JDORelationship	getInverseRelationship() Get the inverse JDORelationship in the case of a two-way relationship.
JavaType	getKeyType() Get the type representation of the keys for this JDOMap.
JDORelationship	getMappedBy() Get the mappedBy relationship.
JavaType	getValueType() Get the type representation of the values for this JDOMap.
boolean	isEmbeddedKey() Determines whether the keys of the map should be stored if possible as part of the instance instead of as their own instances in the datastore.
boolean	isEmbeddedValue() Determines whether the values of the map should be stored if possible as part of the instance instead of as their own instances in the datastore.

Methods inherited from class org.apache.jdo.impl.model.jdo.JDOMapImplDynamic

getKeyTypeName, getRelatedJavaType, getValueTypeName, isJDOMap, setEmbeddedKey, setEmbeddedValue, setKeyType, setKeyTypeName, setValueType, setValueTypeName

Methods inherited from class org.apache.jdo.impl.model.jdo.JDORelationshipImpl

getDeclaringField, getInverseRelationshipName, getLowerBound, getRelatedJDOClass, getUpperBound, isJDOArray, isJDOCollection, isJDOReference, isOwner, setDeclaringField, setInverseRelationship, setLowerBound, setMappedBy, setUpperBound

Methods inherited from class org.apache.jdo.impl.model.jdo.JDOElementImpl

addPropertyChangeListener, addVetoableChangeListener, createJDOExtension, firePropertyChange, fireVetoableChange, getJDOExtensions, removeJDOExtension, removePropertyChangeListener, removeVetoableChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jdo.model.jdo.JDORelationship

getDeclaringField, getInverseRelationshipName, getLowerBound, getRelatedJDOClass, getUpperBound, isJDOArray, isJDOCollection, isJDOReference, isOwner, setDeclaringField, setInverseRelationship, setLowerBound, setMappedBy, setUpperBound

Methods inherited from interface org.apache.jdo.model.jdo.JDOElement

addPropertyChangeListener, addVetoableChangeListener, createJDOExtension, getJDOExtensions, removeJDOExtension, removePropertyChangeListener, removeVetoableChangeListener

Constructor Detail

JDOMapImplCaching

public JDOMapImplCaching()

Method Detail

getMappedBy

public JDORelationship getMappedBy()

Get the mappedBy relationship. If there is no mappedBy relationship set, the method checks the mappedBy name as specified in the declaring field and resolves the relationship. The method returns null if there is no mappedBy relationship set and there is no mappedBy name specified on the declaring field.

Specified by:

getMappedBy in interface JDORelationship

Overrides:

getMappedBy in class JDORelationshipImpl

Returns:

the mappedBy relationship if available; null otherwise.

getInverseRelationship

public JDORelationship getInverseRelationship()

Get the inverse JDORelationship in the case of a two-way relationship.

Specified by:

getInverseRelationship in interface JDORelationship

Overrides:

getInverseRelationship in class JDORelationshipImpl

Returns:

the inverse relationship

isEmbeddedKey

public boolean isEmbeddedKey()

Determines whether the keys of the map should be stored if possible as part of the instance instead of as their own instances in the datastore.

Specified by:

isEmbeddedKey in interface JDOMap

Overrides:

isEmbeddedKey in class JDOMapImplDynamic

Returns:

true if the keys are stored as part of this instance; false otherwise

getKeyType

public JavaType getKeyType()

Get the type representation of the keys for this JDOMap.

Specified by:

getKeyType in interface JDOMap

Overrides:

getKeyType in class JDOMapImplDynamic

Returns:

the type of the keys of this JDOMap

isEmbeddedValue

public boolean isEmbeddedValue()

Determines whether the values of the map should be stored if possible as part of the instance instead of as their own instances in the datastore.

Specified by:

isEmbeddedValue in interface JDOMap

Overrides:

isEmbeddedValue in class JDOMapImplDynamic

Returns:

true if the values are stored as part of this instance; false otherwise

getValueType

public JavaType getValueType()

Get the type representation of the values for this JDOMap.

Specified by:

getValueType in interface JDOMap

Overrides:

getValueType in class JDOMapImplDynamic

Returns:

the type of the values of this JDOMap