org.mapdb.serializer

Class SerializerRecid

java.lang.Object

org.mapdb.serializer.SerializerEightByte<java.lang.Long>

org.mapdb.serializer.SerializerRecid

All Implemented Interfaces:

java.util.Comparator<java.lang.Long>, Serializer<java.lang.Long>, GroupSerializer<java.lang.Long>

public class SerializerRecid
extends SerializerEightByte<java.lang.Long>

Created by jan on 2/28/16.

Field Summary

Fields inherited from interface org.mapdb.Serializer

BIG_DECIMAL, BIG_INTEGER, BOOLEAN, BYTE, BYTE_ARRAY, BYTE_ARRAY_DELTA, BYTE_ARRAY_DELTA2, BYTE_ARRAY_NOSIZE, CHAR, CHAR_ARRAY, CLASS, DATE, DOUBLE, DOUBLE_ARRAY, ELSA, FLOAT, FLOAT_ARRAY, ILLEGAL_ACCESS, INT_ARRAY, INTEGER, INTEGER_DELTA, INTEGER_PACKED, JAVA, LONG, LONG_ARRAY, LONG_DELTA, LONG_PACKED, RECID, RECID_ARRAY, SHORT, SHORT_ARRAY, STRING, STRING_ASCII, STRING_DELTA, STRING_DELTA2, STRING_INTERN, STRING_NOSIZE, STRING_ORIGHASH, UUID

Constructor Summary

Constructors

Constructor and Description
SerializerRecid()

Method Summary

Modifier and Type	Method and Description
java.lang.Long	deserialize(DataInput2 in, int available) Deserializes and returns the content of the given DataInput2.
int	fixedSize() Returns the fixed size of the serialized form in bytes or -1 if the size is not fixed (e.g.
boolean	isTrusted() Returns if this Serializer is trusted to always read the same number of bytes as it writes for any given object being serialized/de-serialized.
protected long	pack(java.lang.Long l)
void	serialize(DataOutput2 out, java.lang.Long value) Serializes the content of the given value into the given DataOutput2.
protected java.lang.Long	unpack(long l)
java.lang.Long	valueArrayBinaryGet(DataInput2 input, int keysLen, int pos)
long[]	valueArrayDeserialize(DataInput2 in, int size)
int	valueArraySearch(java.lang.Object keys, java.lang.Long key)
void	valueArraySerialize(DataOutput2 out, java.lang.Object vals)

Methods inherited from class org.mapdb.serializer.SerializerEightByte

valueArrayCopyOfRange, valueArrayDeleteValue, valueArrayEmpty, valueArrayFromArray, valueArrayGet, valueArrayPut, valueArraySearch, valueArraySize, valueArrayUpdateVal

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mapdb.serializer.GroupSerializer

nextValue, valueArrayBinarySearch, valueArrayToArray

Methods inherited from interface org.mapdb.Serializer

clone, compare, deserializeFromLong, equals, hashCode, needsAvailableSizeHint

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

SerializerRecid

public SerializerRecid()

Method Detail

serialize

public void serialize(DataOutput2 out,
                      java.lang.Long value)
               throws java.io.IOException

Description copied from interface: Serializer

Serializes the content of the given value into the given DataOutput2.

Parameters:

out - DataOutput2 to save object into

value - Object to serialize

Throws:

java.io.IOException - in case of an I/O error

deserialize

public java.lang.Long deserialize(DataInput2 in,
                                  int available)
                           throws java.io.IOException

Description copied from interface: Serializer

Deserializes and returns the content of the given DataInput2.

Parameters:

in - DataInput2 to de-serialize data from

available - how many bytes that are available in the DataInput2 for reading, may be -1 (in streams) or 0 (null).

Returns:

the de-serialized content of the given DataInput2

Throws:

java.io.IOException - in case of an I/O error

fixedSize

public int fixedSize()

Description copied from interface: Serializer

Returns the fixed size of the serialized form in bytes or -1 if the size is not fixed (e.g. for Strings).

Some optimizations can be applied to serializers with a fixed size.

Specified by:

fixedSize in interface Serializer<java.lang.Long>

Overrides:

fixedSize in class SerializerEightByte<java.lang.Long>

Returns:

the fixed size of the serialized form in bytes or -1 if the size is not fixed

unpack

protected java.lang.Long unpack(long l)

Specified by:

unpack in class SerializerEightByte<java.lang.Long>

pack

protected long pack(java.lang.Long l)

Specified by:

pack in class SerializerEightByte<java.lang.Long>

isTrusted

public boolean isTrusted()

Description copied from interface: Serializer

Returns if this Serializer is trusted to always read the same number of bytes as it writes for any given object being serialized/de-serialized.

MapDB has a relaxed record size boundary checking. It expects deserializers to read exactly as many bytes as were written during serialization. If a deserializer reads more bytes than it wrote, it might start reading others record data in store.

Some serializers (Kryo) have problems with this. To prevent this, we can not read data directly from a store, but we must copy them into separate byte[] buffers. Thus, zero-copy optimizations are disabled by default, but can be explicitly enabled here by letting this method return true.

This flag indicates if this serializer was 'verified' to read as many bytes as it writes. It should also be much better tested etc.

Specified by:

isTrusted in interface Serializer<java.lang.Long>

Overrides:

isTrusted in class SerializerEightByte<java.lang.Long>

Returns:

if this Serializer is trusted to always read the same number of bytes as it writes for any given object being serialized/de-serialized

valueArraySearch

public int valueArraySearch(java.lang.Object keys,
                            java.lang.Long key)

valueArraySerialize

public void valueArraySerialize(DataOutput2 out,
                                java.lang.Object vals)
                         throws java.io.IOException

Specified by:

valueArraySerialize in interface GroupSerializer<java.lang.Long>

Overrides:

valueArraySerialize in class SerializerEightByte<java.lang.Long>

Throws:

java.io.IOException

valueArrayDeserialize

public long[] valueArrayDeserialize(DataInput2 in,
                                    int size)
                             throws java.io.IOException

Specified by:

valueArrayDeserialize in interface GroupSerializer<java.lang.Long>

Overrides:

valueArrayDeserialize in class SerializerEightByte<java.lang.Long>

Throws:

java.io.IOException

valueArrayBinaryGet

public java.lang.Long valueArrayBinaryGet(DataInput2 input,
                                          int keysLen,
                                          int pos)
                                   throws java.io.IOException

Specified by:

valueArrayBinaryGet in interface GroupSerializer<java.lang.Long>

Overrides:

valueArrayBinaryGet in class SerializerEightByte<java.lang.Long>

Throws:

java.io.IOException