org.eclipse.persistence.internal.jpa.metadata.mappings

Class OrderByMetadata

java.lang.Object

org.eclipse.persistence.internal.jpa.metadata.ORMetadata

org.eclipse.persistence.internal.jpa.metadata.mappings.OrderByMetadata

public class OrderByMetadata
extends ORMetadata

Object to hold onto order by metadata. Key notes: - any metadata mapped from XML to this class must be compared in the equals method. - when loading from annotations, the constructor accepts the metadata accessor this metadata was loaded from. Used it to look up any 'companion' annotation needed for processing. - methods should be preserved in alphabetical order.

Since:

EclipseLink 2.3

Author:

Guy Pelletier

Field Summary

Fields inherited from class org.eclipse.persistence.internal.jpa.metadata.ORMetadata

m_project

Constructor Summary

Constructors

Constructor and Description
OrderByMetadata() INTERNAL: Used for XML loading.
OrderByMetadata(MetadataAnnotation orderBy, MetadataAccessor accessor) INTERNAL: Used for annotation loading.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object objectToCompare) INTERNAL:
String	getValue() INTERNAL: Used for OX mapping.
int	hashCode()
void	process(CollectionMapping mapping, MetadataDescriptor referenceDescriptor, MetadataClass javaClass) INTERNAL: Process an order by value (if specified) for the given collection mapping.
void	setValue(String value) INTERNAL: Used for OX mapping.

Methods inherited from class org.eclipse.persistence.internal.jpa.metadata.ORMetadata

getAccessibleObject, getAccessibleObjectName, getAnnotation, getBoxedType, getDatabaseTypeEnum, getEntityMappings, getFullyQualifiedClassName, getIdentifier, getJavaClass, getJavaClassName, getLoader, getLocation, getLogger, getMetadataClass, getMetadataClass, getMetadataClass, getMetadataFactory, getName, getPrimitiveClassForName, getProject, getText, getXMLElement, hasIdentifier, hasText, initXMLClassName, initXMLObject, initXMLObject, initXMLObjects, initXMLTextObject, loadedFromAnnotation, loadedFromEclipseLinkXML, loadedFromXML, merge, mergeORObjectLists, mergeORObjects, mergeSimpleObjects, reloadEntity, reloadMappedSuperclass, setAccessibleObject, setEntityMappings, setFieldName, setFieldName, setProject, shouldOverride, valuesMatch, valuesMatch

Methods inherited from class java.lang.Object

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

Constructor Detail

OrderByMetadata

public OrderByMetadata()

INTERNAL: Used for XML loading.

OrderByMetadata

public OrderByMetadata(MetadataAnnotation orderBy,
                       MetadataAccessor accessor)

INTERNAL: Used for annotation loading.

Method Detail

equals

public boolean equals(Object objectToCompare)

INTERNAL:

Specified by:

equals in class ORMetadata

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getValue

public String getValue()

INTERNAL: Used for OX mapping.

process

public void process(CollectionMapping mapping,
                    MetadataDescriptor referenceDescriptor,
                    MetadataClass javaClass)

INTERNAL: Process an order by value (if specified) for the given collection mapping. Order by specifies the ordering of the elements of a collection valued association at the point when the association is retrieved. The syntax of the value ordering element is an orderby_list, as follows: orderby_list ::= orderby_item [, orderby_item]* orderby_item ::= property_or_field_name [ASC | DESC] When ASC or DESC is not specified, ASC is assumed. If the ordering element is not specified, ordering by the primary key of the associated entity is assumed. The property or field name must correspond to that of a persistent property or field of the associated class. The properties or fields used in the ordering must correspond to columns for which comparison operators are supported.

setValue

public void setValue(String value)

INTERNAL: Used for OX mapping.