org.mapdb
Class Serializer.CompressionWrapper<E>

java.lang.Object
  org.mapdb.Serializer.CompressionWrapper<E>

All Implemented Interfaces:

Serializable, Serializer<E>

Enclosing interface:

Serializer<A>

public static final class Serializer.CompressionWrapper<E>
extends Object
implements Serializer<E>, Serializable

wraps another serializer and (de)compresses its output/input

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.mapdb.Serializer

Serializer.CompressionWrapper<E>

Field Summary

protected ThreadLocal<CompressLZF>	LZF
protected Serializer<E>	serializer

Fields inherited from interface org.mapdb.Serializer

BASIC, BOOLEAN, BYTE_ARRAY, BYTE_ARRAY_NOSIZE, CHAR_ARRAY, DOUBLE_ARRAY, ILLEGAL_ACCESS, INT_ARRAY, INTEGER, JAVA, LONG, LONG_ARRAY, STRING, STRING_ASCII, STRING_INTERN, STRING_NOSIZE, UUID

Constructor Summary

	Serializer.CompressionWrapper(Serializer<E> serializer)
protected	Serializer.CompressionWrapper(SerializerBase serializerBase, DataInput is, SerializerBase.FastArrayList<Object> objectStack) used for deserialization

Method Summary

E	deserialize(DataInput in, int available) Deserialize the content of an object from a DataInput.
boolean	equals(Object o)
int	fixedSize() Data could be serialized into record with variable size or fixed size.
int	hashCode()
void	serialize(DataOutput out, E value) Serialize the content of an object into a ObjectOutput

Methods inherited from class java.lang.Object

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

Field Detail

serializer

protected final Serializer<E> serializer

LZF

protected final ThreadLocal<CompressLZF> LZF

Constructor Detail

Serializer.CompressionWrapper

public Serializer.CompressionWrapper(Serializer<E> serializer)

Serializer.CompressionWrapper

protected Serializer.CompressionWrapper(SerializerBase serializerBase,
                                        DataInput is,
                                        SerializerBase.FastArrayList<Object> objectStack)
                                 throws IOException

used for deserialization

Throws:

IOException

Method Detail

serialize

public void serialize(DataOutput out,
                      E value)
               throws IOException

Description copied from interface: Serializer

Serialize the content of an object into a ObjectOutput

Specified by:

serialize in interface Serializer<E>

Parameters:

out - ObjectOutput to save object into

value - Object to serialize

Throws:

IOException

deserialize

public E deserialize(DataInput in,
                     int available)
              throws IOException

Description copied from interface: Serializer

Deserialize the content of an object from a DataInput.

Specified by:

deserialize in interface Serializer<E>

Parameters:

in - to read serialized data from

available - how many bytes are available in DataInput for reading, may be -1 (in streams) or 0 (null).

Returns:

deserialized object

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

fixedSize

public int fixedSize()

Description copied from interface: Serializer

Data could be serialized into record with variable size or fixed size. Some optimizations can be applied to serializers with fixed size

Specified by:

fixedSize in interface Serializer<E>

Returns:

fixed size or -1 for variable size