org.modeshape.jcr.index.local

Class MapDB.LocalTuple2KeySerializer<A,B>

java.lang.Object

org.mapdb.BTreeKeySerializer<org.mapdb.Fun.Tuple2<A,B>>

org.modeshape.jcr.index.local.MapDB.LocalTuple2KeySerializer<A,B>

Type Parameters:

A - first tuple value

B - second tuple value

All Implemented Interfaces:

Serializable

Enclosing class:

MapDB

protected static final class MapDB.LocalTuple2KeySerializer<A,B>
extends org.mapdb.BTreeKeySerializer<org.mapdb.Fun.Tuple2<A,B>>
implements Serializable

Applies delta compression on array of tuple. First tuple value may be shared between consequentive tuples, so only first occurrence is serialized. An example:

     Value            Serialized as
     -------------------------
     Tuple(1, 1)       1, 1
     Tuple(1, 2)          2
     Tuple(1, 3)          3
     Tuple(1, 4)          4
 

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.mapdb.BTreeKeySerializer

org.mapdb.BTreeKeySerializer.BasicKeySerializer, org.mapdb.BTreeKeySerializer.Tuple2KeySerializer<A,B>, org.mapdb.BTreeKeySerializer.Tuple3KeySerializer<A,B,C>, org.mapdb.BTreeKeySerializer.Tuple4KeySerializer<A,B,C,D>, org.mapdb.BTreeKeySerializer.Tuple5KeySerializer<A,B,C,D,E>, org.mapdb.BTreeKeySerializer.Tuple6KeySerializer<A,B,C,D,E,F>

Field Summary

Fields

Modifier and Type	Field and Description
protected Comparator<A>	aComparator
protected org.mapdb.Serializer<A>	aSerializer
protected org.mapdb.Serializer<B>	bSerializer
protected Comparator<org.mapdb.Fun.Tuple2<A,B>>	comparator

Fields inherited from class org.mapdb.BTreeKeySerializer

BASIC, STRING, TUPLE2, TUPLE3, TUPLE4, ZERO_OR_POSITIVE_INT, ZERO_OR_POSITIVE_LONG

Constructor Summary

Constructors

Constructor and Description
LocalTuple2KeySerializer(Comparator<A> aComparator, org.mapdb.Serializer<A> aSerializer, org.mapdb.Serializer<B> bSerializer, Comparator<org.mapdb.Fun.Tuple2<A,B>> comparator) Construct new Tuple2 Key Serializer.

Method Summary

Modifier and Type	Method and Description
Object[]	deserialize(DataInput in, int start, int end, int size)
boolean	equals(Object o)
Comparator<org.mapdb.Fun.Tuple2<A,B>>	getComparator()
int	hashCode()
void	serialize(DataOutput out, int start, int end, Object[] keys)

Methods inherited from class org.mapdb.BTreeKeySerializer

leadingValuePackRead, leadingValuePackWrite

Methods inherited from class java.lang.Object

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

Field Detail

aComparator

protected final Comparator<A> aComparator

aSerializer

protected final org.mapdb.Serializer<A> aSerializer

bSerializer

protected final org.mapdb.Serializer<B> bSerializer

comparator

protected final Comparator<org.mapdb.Fun.Tuple2<A,B>> comparator

Constructor Detail

LocalTuple2KeySerializer

public LocalTuple2KeySerializer(Comparator<A> aComparator,
                                org.mapdb.Serializer<A> aSerializer,
                                org.mapdb.Serializer<B> bSerializer,
                                Comparator<org.mapdb.Fun.Tuple2<A,B>> comparator)

Construct new Tuple2 Key Serializer. You may pass null for some value, In that case 'default' value will be used, Comparable comparator and Default Serializer from DB.

Parameters:

aComparator - comparator used for first tuple value

aSerializer - serializer used for first tuple value

bSerializer - serializer used for second tuple value

comparator - the comparator for the tuple

Method Detail

serialize

public void serialize(DataOutput out,
                      int start,
                      int end,
                      Object[] keys)
               throws IOException

Specified by:

serialize in class org.mapdb.BTreeKeySerializer<org.mapdb.Fun.Tuple2<A,B>>

Throws:

IOException

deserialize

public Object[] deserialize(DataInput in,
                            int start,
                            int end,
                            int size)
                     throws IOException

Specified by:

deserialize in class org.mapdb.BTreeKeySerializer<org.mapdb.Fun.Tuple2<A,B>>

Throws:

IOException

getComparator

public Comparator<org.mapdb.Fun.Tuple2<A,B>> getComparator()

Specified by:

getComparator in class org.mapdb.BTreeKeySerializer<org.mapdb.Fun.Tuple2<A,B>>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object