org.mapdb

Class BTreeKeySerializer.Compress

java.lang.Object

org.mapdb.BTreeKeySerializer

org.mapdb.BTreeKeySerializer.Compress

Enclosing class:

BTreeKeySerializer<KEY,KEYS>

public static class BTreeKeySerializer.Compress
extends BTreeKeySerializer

Nested Class Summary

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

BTreeKeySerializer.ArrayKeySerializer, BTreeKeySerializer.BasicKeySerializer, BTreeKeySerializer.ByteArrayKeys, BTreeKeySerializer.CharArrayKeys, BTreeKeySerializer.Compress, BTreeKeySerializer.StringArrayKeys

Field Summary

Fields inherited from class org.mapdb.BTreeKeySerializer

ARRAY2, ARRAY3, ARRAY4, BASIC, BYTE_ARRAY, BYTE_ARRAY2, INTEGER, LONG, STRING, STRING2, UUID, ZERO_OR_POSITIVE_INT, ZERO_OR_POSITIVE_LONG

Constructor Summary

Constructors

Modifier	Constructor and Description
	BTreeKeySerializer.Compress(BTreeKeySerializer wrapped)
protected	BTreeKeySerializer.Compress(SerializerBase serializerBase, DataInput in, SerializerBase.FastArrayList objectStack)

Method Summary

Methods

Modifier and Type	Method and Description
Object	arrayToKeys(Object[] keys)
Comparator<?>	comparator()
int	compare(Object o, int pos1, int pos2)
int	compare(Object o, int pos, Object o2)
boolean	compareIsSmaller(Object o, int pos, Object o2)
Object	copyOfRange(Object o, int from, int to)
Object	deleteKey(Object o, int pos)
Object	deserialize(DataInput in, int nodeSize) Deserializes keys for single BTree Node.
Object	emptyKeys()
int	findChildren(BTreeMap.BNode node, Object key) Find the first children node with a key equal or greater than the given key.
int	findChildren2(BTreeMap.BNode node, Object key)
Object	getKey(Object o, int pos)
Object[]	keysToArray(Object o)
int	length(Object o)
Object	putKey(Object o, int pos, Object newKey) expand keys array by one and put newKey at position pos
void	serialize(DataOutput out, Object o) Serialize keys from single BTree Node.

Methods inherited from class org.mapdb.BTreeKeySerializer

commonPrefixLen, commonPrefixLen, isTrusted

Methods inherited from class java.lang.Object

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

Constructor Detail

BTreeKeySerializer.Compress

public BTreeKeySerializer.Compress(BTreeKeySerializer wrapped)

BTreeKeySerializer.Compress

protected BTreeKeySerializer.Compress(SerializerBase serializerBase,
                           DataInput in,
                           SerializerBase.FastArrayList objectStack)
                               throws IOException

Throws:

IOException

Method Detail

serialize

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

Description copied from class: BTreeKeySerializer

Serialize keys from single BTree Node.

Specified by:

serialize in class BTreeKeySerializer

Parameters:

out - output stream where to put ata

o - An object which represents keys

Throws:

IOException - in case of an writting error

deserialize

public Object deserialize(DataInput in,
                 int nodeSize)
                   throws IOException

Description copied from class: BTreeKeySerializer

Deserializes keys for single BTree Node. To

Specified by:

deserialize in class BTreeKeySerializer

Parameters:

in - input stream to read data from

nodeSize - number of keys in deserialized node

Returns:

an object which represents keys

Throws:

IOException - in case of an reading error

compare

public int compare(Object o,
          int pos1,
          int pos2)

Specified by:

compare in class BTreeKeySerializer

compare

public int compare(Object o,
          int pos,
          Object o2)

Specified by:

compare in class BTreeKeySerializer

compareIsSmaller

public boolean compareIsSmaller(Object o,
                       int pos,
                       Object o2)

Overrides:

compareIsSmaller in class BTreeKeySerializer

getKey

public Object getKey(Object o,
            int pos)

Specified by:

getKey in class BTreeKeySerializer

comparator

public Comparator<?> comparator()

Specified by:

comparator in class BTreeKeySerializer

emptyKeys

public Object emptyKeys()

Specified by:

emptyKeys in class BTreeKeySerializer

length

public int length(Object o)

Specified by:

length in class BTreeKeySerializer

putKey

public Object putKey(Object o,
            int pos,
            Object newKey)

Description copied from class: BTreeKeySerializer

expand keys array by one and put newKey at position pos

Specified by:

putKey in class BTreeKeySerializer

Parameters:

o - array of keys to put new key into

pos - of new key

newKey - new key to insert

Returns:

array of keys with new key at given position

copyOfRange

public Object copyOfRange(Object o,
                 int from,
                 int to)

Specified by:

copyOfRange in class BTreeKeySerializer

deleteKey

public Object deleteKey(Object o,
               int pos)

Specified by:

deleteKey in class BTreeKeySerializer

findChildren

public int findChildren(BTreeMap.BNode node,
               Object key)

Description copied from class: BTreeKeySerializer

Find the first children node with a key equal or greater than the given key. If all items are smaller it returns keyser.length(keys)

Overrides:

findChildren in class BTreeKeySerializer

Parameters:

node - BTree Node to find position in

key - key whose position needs to be find

Returns:

position of key in node

findChildren2

public int findChildren2(BTreeMap.BNode node,
                Object key)

Overrides:

findChildren2 in class BTreeKeySerializer

arrayToKeys

public Object arrayToKeys(Object[] keys)

Specified by:

arrayToKeys in class BTreeKeySerializer

keysToArray

public Object[] keysToArray(Object o)

Overrides:

keysToArray in class BTreeKeySerializer