org.mapdb.elsa

Class ElsaSerializerBase

java.lang.Object

org.mapdb.elsa.ElsaSerializerBase

All Implemented Interfaces:

ElsaSerializer

Direct Known Subclasses:

ElsaSerializerPojo

public class ElsaSerializerBase
extends Object
implements ElsaSerializer

Serializer which uses 'header byte' to serialize/deserialize most of classes from 'java.lang' and 'java.util' packages.

Author:

Jan Kotek

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ElsaSerializerBase.Deser<A>
protected static class	ElsaSerializerBase.DeserInt
protected static class	ElsaSerializerBase.DeserLong
protected class	ElsaSerializerBase.DeserSingleton always returns single object without reading anything
protected static class	ElsaSerializerBase.DeserStringLen
protected static interface	ElsaSerializerBase.Header Header byte, is used at start of each record to indicate data type WARNING !!! values bellow must be unique !!!!!
static class	ElsaSerializerBase.Ser<A>
protected static class	ElsaSerializerBase.UserSer

Field Summary

Fields

Modifier and Type	Field and Description
protected ClassLoader	classLoader
protected static ElsaSerializerBase.Deser<byte[]>	DESER_BYTE_ARRAY
protected ElsaSerializerBase.Deser[]	headerDeser
protected int	objectStackType
protected Map<Class,ElsaSerializerBase.Ser>	ser
protected static ElsaSerializerBase.Ser	SER_BOOLEAN
protected static ElsaSerializerBase.Ser	SER_BYTE
protected static ElsaSerializerBase.Ser<byte[]>	SER_BYTE_ARRAY
protected static ElsaSerializerBase.Ser	SER_CHAR
protected static ElsaSerializerBase.Ser	SER_DOUBLE
protected static ElsaSerializerBase.Ser	SER_FLOAT
protected static ElsaSerializerBase.Ser	SER_INT
protected static ElsaSerializerBase.Ser	SER_INT_ARRAY
protected static ElsaSerializerBase.Ser	SER_LONG
protected static ElsaSerializerBase.Ser	SER_LONG_ARRAY
protected static ElsaSerializerBase.Ser	SER_SHORT
protected static ElsaSerializerBase.Ser	SER_STRING
protected Object[]	singletons
protected IdentityHashMap<Object,Integer>	singletonsReverse
protected ElsaSerializerBase.Deser[]	userDeser

Constructor Summary

Constructors

Constructor and Description
ElsaSerializerBase()
ElsaSerializerBase(int objectStackType, Object[] singletons, Map<Class,ElsaSerializerBase.Ser> userSer, Map<Class,Integer> userSerHeaders, Map<Integer,ElsaSerializerBase.Deser> userDeser)

Method Summary

Modifier and Type	Method and Description
<E> E	clone(E value)
<E> E	deserialize(DataInput in)
Object	deserialize(DataInput in, ElsaStack objectStack)
protected Object	deserializeSingleton(DataInput is, ElsaStack objectStack)
protected Object	deserializeUnknownHeader(DataInput is, int head, ElsaStack objectStack) override this method to extend ElsaSerializerBase functionality
protected void	initHeaderDeser()
protected void	initSer()
boolean	isSerializable(Object o) return true if mapdb knows howto serialize given object
protected Class<?>	loadClass(String name)
protected Class	loadClass2(DataInput is)
protected Class	loadClass2(String name)
protected static Class	loadClass3(String name, ClassLoader classLoader)
protected ElsaStack	newElsaStack()
protected static boolean[]	readBooleanArray(int numBools, DataInput is) Unpacks boolean[], each value in array is represented by single bite
void	serialize(DataOutput out, Object obj)
void	serialize(DataOutput out, Object obj, ElsaStack objectStack)
protected void	serializeClass(DataOutput out, Class clazz)
void	serializeObjectArray(DataOutput out, Object[] b, ElsaStack objectStack)
protected void	serializeUnknownObject(DataOutput out, Object obj, ElsaStack objectStack) override this method to extend ElsaSerializerBase functionality
protected static void	writeBooleanArray(DataOutput out, boolean[] bool) Writes boolean[] into output, each value in array is represented by single byte

Methods inherited from class java.lang.Object

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

Field Detail

objectStackType

protected final int objectStackType

singletons

protected final Object[] singletons

singletonsReverse

protected final IdentityHashMap<Object,Integer> singletonsReverse

ser

protected final Map<Class,ElsaSerializerBase.Ser> ser

headerDeser

protected final ElsaSerializerBase.Deser[] headerDeser

userDeser

protected final ElsaSerializerBase.Deser[] userDeser

classLoader

protected final ClassLoader classLoader

SER_STRING

protected static final ElsaSerializerBase.Ser SER_STRING

SER_LONG_ARRAY

protected static final ElsaSerializerBase.Ser SER_LONG_ARRAY

SER_INT_ARRAY

protected static final ElsaSerializerBase.Ser SER_INT_ARRAY

SER_DOUBLE

protected static final ElsaSerializerBase.Ser SER_DOUBLE

SER_FLOAT

protected static final ElsaSerializerBase.Ser SER_FLOAT

SER_SHORT

protected static final ElsaSerializerBase.Ser SER_SHORT

SER_CHAR

protected static final ElsaSerializerBase.Ser SER_CHAR

SER_BYTE

protected static final ElsaSerializerBase.Ser SER_BYTE

SER_BOOLEAN

protected static final ElsaSerializerBase.Ser SER_BOOLEAN

SER_LONG

protected static final ElsaSerializerBase.Ser SER_LONG

SER_INT

protected static final ElsaSerializerBase.Ser SER_INT

SER_BYTE_ARRAY

protected static final ElsaSerializerBase.Ser<byte[]> SER_BYTE_ARRAY

DESER_BYTE_ARRAY

protected static final ElsaSerializerBase.Deser<byte[]> DESER_BYTE_ARRAY

Constructor Detail

ElsaSerializerBase

public ElsaSerializerBase()

ElsaSerializerBase

public ElsaSerializerBase(int objectStackType,
                          Object[] singletons,
                          Map<Class,ElsaSerializerBase.Ser> userSer,
                          Map<Class,Integer> userSerHeaders,
                          Map<Integer,ElsaSerializerBase.Deser> userDeser)

Method Detail

loadClass

protected Class<?> loadClass(String name)
                      throws ClassNotFoundException

Throws:

ClassNotFoundException

loadClass2

protected Class loadClass2(DataInput is)
                    throws IOException

Throws:

IOException

loadClass2

protected Class loadClass2(String name)

loadClass3

protected static Class loadClass3(String name,
                                  ClassLoader classLoader)

initSer

protected void initSer()

serializeObjectArray

public void serializeObjectArray(DataOutput out,
                                 Object[] b,
                                 ElsaStack objectStack)
                          throws IOException

Throws:

IOException

initHeaderDeser

protected void initHeaderDeser()

serialize

public void serialize(DataOutput out,
                      Object obj)
               throws IOException

Specified by:

serialize in interface ElsaSerializer

Throws:

IOException

newElsaStack

protected ElsaStack newElsaStack()

clone

public <E> E clone(E value)
            throws IOException

Specified by:

clone in interface ElsaSerializer

Throws:

IOException

serialize

public void serialize(DataOutput out,
                      Object obj,
                      ElsaStack objectStack)
               throws IOException

Throws:

IOException

serializeClass

protected void serializeClass(DataOutput out,
                              Class clazz)
                       throws IOException

Throws:

IOException

deserialize

public <E> E deserialize(DataInput in)
                  throws IOException

Specified by:

deserialize in interface ElsaSerializer

Throws:

IOException

deserialize

public Object deserialize(DataInput in,
                          ElsaStack objectStack)
                   throws IOException

Throws:

IOException

deserializeSingleton

protected Object deserializeSingleton(DataInput is,
                                      ElsaStack objectStack)
                               throws IOException

Throws:

IOException

serializeUnknownObject

protected void serializeUnknownObject(DataOutput out,
                                      Object obj,
                                      ElsaStack objectStack)
                               throws IOException

override this method to extend ElsaSerializerBase functionality

Throws:

IOException

deserializeUnknownHeader

protected Object deserializeUnknownHeader(DataInput is,
                                          int head,
                                          ElsaStack objectStack)
                                   throws IOException

override this method to extend ElsaSerializerBase functionality

Throws:

IOException

writeBooleanArray

protected static void writeBooleanArray(DataOutput out,
                                        boolean[] bool)
                                 throws IOException

Writes boolean[] into output, each value in array is represented by single byte

Parameters:

bool - The booleans to be writen.

Throws:

IOException

readBooleanArray

protected static boolean[] readBooleanArray(int numBools,
                                            DataInput is)
                                     throws IOException

Unpacks boolean[], each value in array is represented by single bite

Returns:

The boolean array decompressed from the bytes read in.

Throws:

IOException - If an error occurred while reading.

isSerializable

public boolean isSerializable(Object o)

return true if mapdb knows howto serialize given object