Package com.db4o.internal.handlers

Class StringHandler

java.lang.Object

com.db4o.internal.handlers.StringHandler

All Implemented Interfaces:

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

Direct Known Subclasses:

StringHandler0

public class StringHandler
extends java.lang.Object
implements ValueTypeHandler, IndexableTypeHandler, BuiltinTypeHandler, VariableLengthTypeHandler, QueryableTypeHandler

Constructor Summary

Constructors

Constructor	Description
StringHandler()

Method Summary

Modifier and Type	Method	Description
ReflectClass	classReflector()
static int	compare(byte[] compare, byte[] with)
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()
java.lang.Object	indexEntryToObject(Context context, java.lang.Object indexEntry)
protected static java.lang.String	intern(Context context, java.lang.String str)
protected static void	internalWrite(InternalObjectContainer objectContainer, WriteBuffer buffer, java.lang.String str)
int	linkLength()
PreparedComparison	prepareComparison(Context context, java.lang.Object obj)	creates a prepared comparison to compare multiple objects against one single object.
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 reader)	This readIndexEntry method reads from the actual index in the file.
java.lang.Object	readIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer buffer)	This readIndexEntry method reads from the parent slot.
static java.lang.String	readString(Context context, ReadBuffer buffer)
static java.lang.String	readStringNoDebug(Context context, ReadBuffer buffer)
void	registerReflector(Reflector reflector)
protected static LatinStringIO	stringIo(InternalObjectContainer objectContainer)
protected static LatinStringIO	stringIo(Context context)
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 writer, java.lang.Object entry)
void	writeShort(Transaction trans, java.lang.String str, ByteArrayBuffer buffer)
static ByteArrayBuffer	writeToBuffer(InternalObjectContainer container, java.lang.String str)

Methods inherited from class java.lang.Object

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

Constructor Detail

StringHandler

public StringHandler()

Method Detail

classReflector

public ReflectClass classReflector()

Specified by:

classReflector in interface BuiltinTypeHandler

delete

public void delete(DeleteContext context)

Description copied from interface: TypeHandler4

gets called when an object gets deleted.

Specified by:

delete in interface TypeHandler4

descendsIntoMembers

public boolean descendsIntoMembers()

Specified by:

descendsIntoMembers in interface QueryableTypeHandler

indexEntryToObject

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

Specified by:

indexEntryToObject in interface IndexableTypeHandler

readIndexEntryFromObjectSlot

public java.lang.Object readIndexEntryFromObjectSlot(MarshallerFamily mf,
                                                     StatefulBuffer buffer)
                                              throws CorruptionException,
                                                     Db4oIOException

This readIndexEntry method reads from the parent slot.

Specified by:

readIndexEntryFromObjectSlot in interface IndexableTypeHandler

Throws:

CorruptionException

Db4oIOException

readIndexEntry

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

Specified by:

readIndexEntry in interface IndexableTypeHandler

Throws:

CorruptionException

Db4oIOException

readIndexEntry

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

This readIndexEntry method reads from the actual index in the file.

Specified by:

readIndexEntry in interface Indexable4

writeIndexEntry

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

Specified by:

writeIndexEntry in interface Indexable4

writeShort

public final void writeShort(Transaction trans,
                             java.lang.String str,
                             ByteArrayBuffer buffer)

compare

public static final int compare(byte[] compare,
                                byte[] with)

defragIndexEntry

public void defragIndexEntry(DefragmentContextImpl context)

Specified by:

defragIndexEntry in interface Indexable4

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

internalWrite

protected static void internalWrite(InternalObjectContainer objectContainer,
                                    WriteBuffer buffer,
                                    java.lang.String str)

writeToBuffer

public static ByteArrayBuffer writeToBuffer(InternalObjectContainer container,
                                            java.lang.String str)

stringIo

protected static LatinStringIO stringIo(Context context)

stringIo

protected static LatinStringIO stringIo(InternalObjectContainer objectContainer)

readString

public static java.lang.String readString(Context context,
                                          ReadBuffer buffer)

readStringNoDebug

public static java.lang.String readStringNoDebug(Context context,
                                                 ReadBuffer buffer)

intern

protected static java.lang.String intern(Context context,
                                         java.lang.String str)

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

defragment

public void defragment(DefragmentContext context)

Description copied from interface: TypeHandler4

gets called when an object gets defragmented.

Specified by:

defragment in interface TypeHandler4

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

linkLength

public int linkLength()

Specified by:

linkLength in interface LinkLengthAware

registerReflector

public void registerReflector(Reflector reflector)

Specified by:

registerReflector in interface BuiltinTypeHandler