Package com.db4o.internal.btree

Class FieldIndexKeyHandler

java.lang.Object

com.db4o.internal.btree.FieldIndexKeyHandler

All Implemented Interfaces:

CanExcludeNullInQueries, Comparable4, Indexable4, LinkLengthAware

public class FieldIndexKeyHandler
extends java.lang.Object
implements Indexable4, CanExcludeNullInQueries

Constructor Summary

Constructors

Constructor	Description
FieldIndexKeyHandler(Indexable4 delegate_)

Method Summary

Modifier and Type	Method	Description
void	defragIndexEntry(DefragmentContextImpl context)
boolean	excludeNull()
int	linkLength()
PreparedComparison	prepareComparison(Context context, java.lang.Object fieldIndexKey)	creates a prepared comparison to compare multiple objects against one single object.
java.lang.Object	readIndexEntry(Context context, ByteArrayBuffer buffer)
Indexable4	valueHandler()
void	writeIndexEntry(Context context, ByteArrayBuffer writer, java.lang.Object obj)

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldIndexKeyHandler

public FieldIndexKeyHandler(Indexable4 delegate_)

Method Detail

linkLength

public int linkLength()

Specified by:

linkLength in interface LinkLengthAware

readIndexEntry

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

Specified by:

readIndexEntry in interface Indexable4

writeIndexEntry

public void writeIndexEntry(Context context,
                            ByteArrayBuffer writer,
                            java.lang.Object obj)

Specified by:

writeIndexEntry in interface Indexable4

valueHandler

public Indexable4 valueHandler()

defragIndexEntry

public void defragIndexEntry(DefragmentContextImpl context)

Specified by:

defragIndexEntry in interface Indexable4

prepareComparison

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

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

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

Returns:

the prepared comparison

excludeNull

public boolean excludeNull()

Specified by:

excludeNull in interface CanExcludeNullInQueries