com.db4o.internal.handlers

Class StandardReferenceTypeHandler

java.lang.Object

com.db4o.internal.handlers.StandardReferenceTypeHandler

All Implemented Interfaces:

DeepClone, Comparable4, FieldAwareTypeHandler, VirtualAttributeHandler, Indexable4, IndexableTypeHandler, LinkLengthAware, ReadsObjectIds, VersionedTypeHandler, CascadingTypeHandler, ReferenceTypeHandler, TypeHandler4

Direct Known Subclasses:

StandardReferenceTypeHandler0

public class StandardReferenceTypeHandler
extends java.lang.Object
implements FieldAwareTypeHandler, IndexableTypeHandler, ReadsObjectIds

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StandardReferenceTypeHandler.PreparedComparisonImpl

Constructor Summary

Constructors

Constructor and Description
StandardReferenceTypeHandler()
StandardReferenceTypeHandler(ClassMetadata classMetadata)

Method Summary

Methods

Modifier and Type	Method and Description
void	activate(ReferenceActivationContext context) gets called when an object is to be activated.
void	activateAspects(UnmarshallingContext context)
void	addFieldIndices(ObjectIdContextImpl context)
void	cascadeActivation(ActivationContext context) will be called during activation if the handled object is already active
ClassMetadata	classMetadata()
void	classMetadata(ClassMetadata classMetadata)
void	collectIDs(CollectIdContext context, Predicate4<ClassAspect> predicate)
void	collectIDs(QueryingReadContext context) will be called during querying to ask for IDs of member objects of the handled object.
java.lang.Object	deepClone(java.lang.Object context) The parameter allows passing one new object so parent references can be corrected on children.
void	defragIndexEntry(DefragmentContextImpl context)
void	defragment(DefragmentContext context) gets called when an object gets defragmented.
TypeHandler4	delegateTypeHandler(Context context)
void	delete(DeleteContext context) gets called when an object gets deleted.
void	deleteMembers(DeleteContextImpl context, boolean isUpdate)
protected MarshallingInfo	ensureFieldList(MarshallingInfo context)
boolean	equals(java.lang.Object obj)
int	hashCode()
java.lang.Object	indexEntryToObject(Context context, java.lang.Object indexEntry)
int	linkLength()
void	marshallAspects(java.lang.Object obj, MarshallingContext context)
PreparedComparison	prepareComparison(Context context, java.lang.Object source) creates a prepared comparison to compare multiple objects against one single object.
TypeHandler4	readCandidateHandler(QueryingReadContext context) will be called during querying to ask for the handler to be used to collect children of the handled object
java.lang.Object	readIndexEntry(Context context, ByteArrayBuffer a_reader)
java.lang.Object	readIndexEntry(ObjectIdContext context)
java.lang.Object	readIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer statefulBuffer)
ObjectID	readObjectID(InternalReadContext context)
void	readVirtualAttributes(ObjectReferenceContext context)
boolean	seekToField(ObjectHeaderContext context, ClassAspect aspect)
void	traverseAllAspects(MarshallingInfo context, TraverseAspectCommand command)
TypeHandler4	unversionedTemplate()
void	write(WriteContext context, java.lang.Object obj) gets called when an object is to be written to the database.
void	writeIndexEntry(Context context, ByteArrayBuffer a_writer, java.lang.Object a_object)

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardReferenceTypeHandler

public StandardReferenceTypeHandler(ClassMetadata classMetadata)

StandardReferenceTypeHandler

public StandardReferenceTypeHandler()

Method Detail

defragment

public void defragment(DefragmentContext context)

Description copied from interface: TypeHandler4

gets called when an object gets defragmented.

Specified by:

defragment in interface TypeHandler4

delete

public void delete(DeleteContext context)
            throws Db4oIOException

Description copied from interface: TypeHandler4

gets called when an object gets deleted.

Specified by:

delete in interface TypeHandler4

Throws:

Db4oIOException

activateAspects

public final void activateAspects(UnmarshallingContext context)

activate

public void activate(ReferenceActivationContext context)

Description copied from interface: ReferenceTypeHandler

gets called when an object is to be activated.

Specified by:

activate in interface ReferenceTypeHandler

write

public void write(WriteContext context,
         java.lang.Object obj)

Description copied from interface: TypeHandler4

gets called when an object is to be written to the database.

Specified by:

write in interface TypeHandler4

obj - the object

marshallAspects

public void marshallAspects(java.lang.Object obj,
                   MarshallingContext context)

prepareComparison

public PreparedComparison prepareComparison(Context context,
                                   java.lang.Object source)

Description copied from interface: Comparable4

creates a prepared comparison to compare multiple objects against one single object.

Specified by:

prepareComparison in interface Comparable4

Parameters:

context - the context of the comparison

source - the object that is to be compared against multiple other objects

Returns:

the prepared comparison

traverseAllAspects

public final void traverseAllAspects(MarshallingInfo context,
                      TraverseAspectCommand command)

ensureFieldList

protected MarshallingInfo ensureFieldList(MarshallingInfo context)

classMetadata

public ClassMetadata classMetadata()

classMetadata

public void classMetadata(ClassMetadata classMetadata)

Specified by:

classMetadata in interface FieldAwareTypeHandler

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

unversionedTemplate

public TypeHandler4 unversionedTemplate()

Specified by:

unversionedTemplate in interface VersionedTypeHandler

deepClone

public java.lang.Object deepClone(java.lang.Object context)

Description copied from interface: DeepClone

The parameter allows passing one new object so parent references can be corrected on children.

Specified by:

deepClone in interface DeepClone

collectIDs

public void collectIDs(CollectIdContext context,
              Predicate4<ClassAspect> predicate)

Specified by:

collectIDs in interface FieldAwareTypeHandler

cascadeActivation

public void cascadeActivation(ActivationContext context)

Description copied from interface: CascadingTypeHandler

will be called during activation if the handled object is already active

Specified by:

cascadeActivation in interface CascadingTypeHandler

readCandidateHandler

public TypeHandler4 readCandidateHandler(QueryingReadContext context)

Description copied from interface: CascadingTypeHandler

will be called during querying to ask for the handler to be used to collect children of the handled object

Specified by:

readCandidateHandler in interface CascadingTypeHandler

Returns:

collectIDs

public void collectIDs(QueryingReadContext context)
                throws Db4oIOException

Description copied from interface: CascadingTypeHandler

will be called during querying to ask for IDs of member objects of the handled object.

Specified by:

collectIDs in interface CascadingTypeHandler

Throws:

Db4oIOException

readVirtualAttributes

public void readVirtualAttributes(ObjectReferenceContext context)

Specified by:

readVirtualAttributes in interface FieldAwareTypeHandler

Specified by:

readVirtualAttributes in interface VirtualAttributeHandler

addFieldIndices

public void addFieldIndices(ObjectIdContextImpl context)

Specified by:

addFieldIndices in interface FieldAwareTypeHandler

deleteMembers

public void deleteMembers(DeleteContextImpl context,
                 boolean isUpdate)

Specified by:

deleteMembers in interface FieldAwareTypeHandler

seekToField

public boolean seekToField(ObjectHeaderContext context,
                  ClassAspect aspect)

Specified by:

seekToField in interface FieldAwareTypeHandler

indexEntryToObject

public final java.lang.Object indexEntryToObject(Context context,
                                  java.lang.Object indexEntry)

Specified by:

indexEntryToObject in interface IndexableTypeHandler

defragIndexEntry

public final void defragIndexEntry(DefragmentContextImpl context)

Specified by:

defragIndexEntry in interface Indexable4

readIndexEntry

public final java.lang.Object readIndexEntry(Context context,
                              ByteArrayBuffer a_reader)

Specified by:

readIndexEntry in interface Indexable4

readIndexEntryFromObjectSlot

public final java.lang.Object readIndexEntryFromObjectSlot(MarshallerFamily mf,
                                            StatefulBuffer statefulBuffer)
                                                    throws CorruptionException

Specified by:

readIndexEntryFromObjectSlot in interface IndexableTypeHandler

Throws:

CorruptionException

readIndexEntry

public java.lang.Object readIndexEntry(ObjectIdContext context)
                                throws CorruptionException,
                                       Db4oIOException

Specified by:

readIndexEntry in interface IndexableTypeHandler

Throws:

CorruptionException

Db4oIOException

linkLength

public int linkLength()

Specified by:

linkLength in interface LinkLengthAware

writeIndexEntry

public void writeIndexEntry(Context context,
                   ByteArrayBuffer a_writer,
                   java.lang.Object a_object)

Specified by:

writeIndexEntry in interface Indexable4

delegateTypeHandler

public TypeHandler4 delegateTypeHandler(Context context)

readObjectID

public ObjectID readObjectID(InternalReadContext context)

Specified by:

readObjectID in interface ReadsObjectIds