Package com.db4o.internal.handlers

Class PrimitiveHandler

java.lang.Object

com.db4o.internal.handlers.PrimitiveHandler

All Implemented Interfaces:

BuiltinTypeHandler, CanExcludeNullInQueries, Comparable4, Indexable4, IndexableTypeHandler, LinkLengthAware, QueryableTypeHandler, TypeHandler4, ValueTypeHandler

Direct Known Subclasses:

BooleanHandler, ByteHandler, CharHandler, IntHandler, LongHandler, NetTypeHandler, ShortHandler

public abstract class PrimitiveHandler
extends java.lang.Object
implements ValueTypeHandler, IndexableTypeHandler, BuiltinTypeHandler, QueryableTypeHandler, CanExcludeNullInQueries

Field Summary

Fields

Modifier and Type	Field	Description
protected ReflectClass	_classReflector

Constructor Summary

Constructors

Constructor	Description
PrimitiveHandler()

Method Summary

Modifier and Type	Method	Description
ReflectClass	classReflector()
java.lang.Object	coerce(ReflectClass claxx, java.lang.Object obj)
abstract java.lang.Object	defaultValue()
void	defragIndexEntry(DefragmentContextImpl context)
void	defragment(DefragmentContext context)	gets called when an object gets defragmented.
void	delete(DeleteContext context)	gets called when an object gets deleted.
boolean	descendsIntoMembers()
boolean	excludeNull()
java.lang.Object	indexEntryToObject(Context context, java.lang.Object indexEntry)
abstract PreparedComparison	internalPrepareComparison(java.lang.Object obj)
protected java.lang.Class	javaClass()
abstract int	linkLength()
java.lang.Object	nullRepresentationInUntypedArrays()
PreparedComparison	prepareComparison(Context context, java.lang.Object obj)	creates a prepared comparison to compare multiple objects against one single object.
ReflectClass	primitiveClassReflector()
abstract java.lang.Class	primitiveJavaClass()
protected PrimitiveMarshaller	primitiveMarshaller()
java.lang.Object	primitiveNull()
java.lang.Object	read(MarshallerFamily mf, StatefulBuffer buffer, boolean redirect)
java.lang.Object	read(ReadContext context)	gets called when an value type is to be read from the database.
java.lang.Object	readIndexEntry(ObjectIdContext context)
java.lang.Object	readIndexEntry(Context context, ByteArrayBuffer buffer)
java.lang.Object	readIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer statefulBuffer)
void	registerReflector(Reflector reflector)
void	write(WriteContext context, java.lang.Object obj)	gets called when an object is to be written to the database.
abstract void	write(java.lang.Object a_object, ByteArrayBuffer a_bytes)
void	writeIndexEntry(Context context, ByteArrayBuffer a_writer, java.lang.Object a_object)

Methods inherited from class java.lang.Object

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

Field Detail

_classReflector

protected ReflectClass _classReflector

Constructor Detail

PrimitiveHandler

public PrimitiveHandler()

Method Detail

coerce

public java.lang.Object coerce(ReflectClass claxx,
                               java.lang.Object obj)

defaultValue

public abstract java.lang.Object defaultValue()

delete

public void delete(DeleteContext context)

Description copied from interface: TypeHandler4

gets called when an object gets deleted.

Specified by:

delete in interface TypeHandler4

indexEntryToObject

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

Specified by:

indexEntryToObject in interface IndexableTypeHandler

primitiveJavaClass

public abstract java.lang.Class primitiveJavaClass()

javaClass

protected java.lang.Class javaClass()

descendsIntoMembers

public boolean descendsIntoMembers()

Specified by:

descendsIntoMembers in interface QueryableTypeHandler

primitiveNull

public java.lang.Object primitiveNull()

read

public java.lang.Object read(MarshallerFamily mf,
                             StatefulBuffer buffer,
                             boolean redirect)
                      throws CorruptionException

Parameters:

mf -

buffer -

redirect -

Throws:

CorruptionException

readIndexEntry

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

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

classReflector

public ReflectClass classReflector()

Specified by:

classReflector in interface BuiltinTypeHandler

primitiveClassReflector

public ReflectClass primitiveClassReflector()

registerReflector

public void registerReflector(Reflector reflector)

Specified by:

registerReflector in interface BuiltinTypeHandler

write

public abstract void write(java.lang.Object a_object,
                           ByteArrayBuffer a_bytes)

writeIndexEntry

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

Specified by:

writeIndexEntry in interface Indexable4

linkLength

public abstract int linkLength()

Specified by:

linkLength in interface LinkLengthAware

defragment

public final void defragment(DefragmentContext context)

Description copied from interface: TypeHandler4

gets called when an object gets defragmented.

Specified by:

defragment in interface TypeHandler4

defragIndexEntry

public void defragIndexEntry(DefragmentContextImpl context)

Specified by:

defragIndexEntry in interface Indexable4

primitiveMarshaller

protected PrimitiveMarshaller primitiveMarshaller()

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

read

public java.lang.Object read(ReadContext context)

Description copied from interface: ValueTypeHandler

gets called when an value type is to be read from the database.

Specified by:

read in interface ValueTypeHandler

Returns:

the read value type

nullRepresentationInUntypedArrays

public java.lang.Object nullRepresentationInUntypedArrays()

prepareComparison

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

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

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

Returns:

the prepared comparison

internalPrepareComparison

public abstract PreparedComparison internalPrepareComparison(java.lang.Object obj)

excludeNull

public boolean excludeNull()

Specified by:

excludeNull in interface CanExcludeNullInQueries