iitb.con.indexing.isam
Class NonLeafNode

java.lang.Object
  iitb.con.indexing.isam.NonLeafNode

All Implemented Interfaces:

ItemSerializer<NonLeafNode>

public class NonLeafNode
extends java.lang.Object
implements ItemSerializer<NonLeafNode>

Non-Leaf Node of the index tree. A non-leaf node consists of the key with respective pointers (block id) of leaf nodes.

Field Summary

short	BlockId Block id of leaf node
java.lang.Object	value Key for the non-leaf node

Constructor Summary

NonLeafNode()

NonLeafNode(java.lang.Object value)

NonLeafNode(java.lang.Object value, short BlockId)

Method Summary

java.lang.Object	attributeDeSerialize(java.nio.ByteBuffer buf, java.lang.Object name) Deserializes the specified attribute to object value
NonLeafNode	deSerialize(java.nio.ByteBuffer buf) Deserializes the given bytes into non-leaf node.
java.nio.ByteBuffer	serialize(NonLeafNode node) Serializes into bytes of the given non-leaf node.

Methods inherited from class java.lang.Object

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

Field Detail

BlockId

public short BlockId

Block id of leaf node

value

public java.lang.Object value

Key for the non-leaf node

Constructor Detail

NonLeafNode

public NonLeafNode()

NonLeafNode

public NonLeafNode(java.lang.Object value)

NonLeafNode

public NonLeafNode(java.lang.Object value,
                   short BlockId)

Method Detail

attributeDeSerialize

public java.lang.Object attributeDeSerialize(java.nio.ByteBuffer buf,
                                             java.lang.Object name)

Deserializes the specified attribute to object value

Specified by:

attributeDeSerialize in interface ItemSerializer<NonLeafNode>

Parameters:

buf - bytes as ByteBuffer

name - attribute name

Returns:

deserialized attribute value as Object

deSerialize

public NonLeafNode deSerialize(java.nio.ByteBuffer buf)

Deserializes the given bytes into non-leaf node. Format {[Key] : [Block Id]}

Specified by:

deSerialize in interface ItemSerializer<NonLeafNode>

Parameters:

buf - bytes as ByteBuffer

Returns:

non-leaf node - NonLeafNode

serialize

public java.nio.ByteBuffer serialize(NonLeafNode node)

Serializes into bytes of the given non-leaf node.

Format {[Key] : [Block Id]}

Specified by:

serialize in interface ItemSerializer<NonLeafNode>

Parameters:

node - non-leaf node - NonLeafNode

Returns:

serialized node as ByteBuffer