Top Description Fields Constructors Methods
org.eclipse.persistence.internal.jpa.metadata.accessors.mappings

public Class EmbeddedIdAccessor

extends EmbeddedAccessor
Class Inheritance
Imports
java.util.Collection, .HashMap, org.eclipse.persistence.exceptions.ValidationException, org.eclipse.persistence.internal.helper.DatabaseField, org.eclipse.persistence.internal.jpa.metadata.MetadataDescriptor, org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor, org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAccessibleObject, .MetadataAnnotation, org.eclipse.persistence.mappings.EmbeddableMapping
An embedded id relationship accessor. Key notes: - any metadata mapped from XML to this class must be compared in the equals method. - any metadata mapped from XML to this class must be handled in the merge method. (merging is done at the accessor/mapping level) - any metadata mapped from XML to this class must be initialized in the initXMLObject method. - methods should be preserved in alphabetical order.
Author
Guy Pelletier
Since
TopLink EJB 3.0 Reference Implementation

Field Summary

Modifier and TypeField and Description
protected HashMap<DatabaseField, MappingAccessor>
m_idAccessors

protected HashMap<String, DatabaseField>
m_idFields

Constructor Summary

AccessConstructor and Description
public
EmbeddedIdAccessor()

INTERNAL: Default constructor.

public
EmbeddedIdAccessor(MetadataAnnotation embeddedId, MetadataAccessibleObject accessibleObject, ClassAccessor classAccessor)

INTERNAL:

Method Summary

Modifier and TypeMethod and Description
protected void
addFieldNameTranslation(EmbeddableMapping embeddableMapping, String overrideName, DatabaseField overrideField, MappingAccessor mappingAccessor)

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.MappingAccessor.addFieldNameTranslation.

INTERNAL: Process an attribute override for an embedded object, that is, an aggregate object mapping in EclipseLink.
protected void
addIdFieldFromAccessor(String attributeName, MappingAccessor accessor)

INTERNAL:

protected void
addIdFieldsFromAccessors(String parentAttribute, Collection<MappingAccessor> accessors)

INTERNAL:

public boolean
equals(Object
the reference object with which to compare.
objectToCompare)

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.EmbeddedAccessor.equals.

INTERNAL:
public int
hashCode()

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.EmbeddedAccessor.hashCode.

Returns a hash code value for the object.
public boolean
isEmbeddedId()

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.MappingAccessor.isEmbeddedId.

INTERNAL:
public void
process()

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.EmbeddedAccessor.process.

INTERNAL: Process an EmbeddedId metadata.
Inherited from org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.EmbeddedAccessor:
addConvertaddMapsIdAccessorgetAssociationOverridesgetAttributeOverridesgetConvertsinitXMLObjectisEmbeddedsetAssociationOverridessetAttributeOverridessetConvertsupdateDerivedIdField

Field Detail

m_idAccessorsback to summary
protected HashMap<DatabaseField, MappingAccessor> m_idAccessors
m_idFieldsback to summary
protected HashMap<String, DatabaseField> m_idFields

Constructor Detail

EmbeddedIdAccessorback to summary
public EmbeddedIdAccessor()

INTERNAL: Default constructor.

EmbeddedIdAccessorback to summary
public EmbeddedIdAccessor(MetadataAnnotation embeddedId, MetadataAccessibleObject accessibleObject, ClassAccessor classAccessor)

INTERNAL:

Method Detail

addFieldNameTranslationback to summary
protected void addFieldNameTranslation(EmbeddableMapping embeddableMapping, String overrideName, DatabaseField overrideField, MappingAccessor mappingAccessor)

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.MappingAccessor.addFieldNameTranslation.

INTERNAL: Process an attribute override for an embedded object, that is, an aggregate object mapping in EclipseLink.

Annotations
@Override
addIdFieldFromAccessorback to summary
protected void addIdFieldFromAccessor(String attributeName, MappingAccessor accessor)

INTERNAL:

addIdFieldsFromAccessorsback to summary
protected void addIdFieldsFromAccessors(String parentAttribute, Collection<MappingAccessor> accessors)

INTERNAL:

equalsback to summary
public boolean equals(Object objectToCompare)

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.EmbeddedAccessor.equals.

INTERNAL:

Parameters
objectToCompare:Object

Doc from java.lang.Object.equals.

the reference object with which to compare.

Returns:boolean

Doc from java.lang.Object.equals.

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
hashCodeback to summary
public int hashCode()

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.EmbeddedAccessor.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

Annotations
@Override
isEmbeddedIdback to summary
public boolean isEmbeddedId()

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.MappingAccessor.isEmbeddedId.

INTERNAL:

Annotations
@Override
processback to summary
public void process()

Overrides org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.EmbeddedAccessor.process.

INTERNAL: Process an EmbeddedId metadata.

Annotations
@Override