org.treetank.node.delegates

Class NodeDelegate

java.lang.Object

org.treetank.node.delegates.NodeDelegate

All Implemented Interfaces:

IData, INode

public class NodeDelegate
extends Object
implements INode

Delegate method for all nodes. That means that all nodes stored in Treetank are represented by an instance of the interface INode namely containing the position in the tree related to a parent-node, the related type and the corresponding hash recursivly computed.

Author:

Sebastian Graf, University of Konstanz

Constructor Summary

Constructors

Constructor and Description
NodeDelegate(long pNodeKey, long pParentKey, long pHash) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj)
long	getDataKey() Gets unique IData key.
com.google.common.hash.Funnel<IData>	getFunnel() Getting a Funnel for computing guava-based hashes.
long	getHash() Getting the persisted hash value for this node.
int	getKind() Gets the kind of the item (atomic value, element node, attribute node....).
long	getParentKey() Gets key of the context item's parent.
int	getTypeKey() Gets value type of the item.
int	hashCode()
boolean	hasParent() Declares, whether the item has a parent.
void	serialize(DataOutput pOutput) Serializing to given dataput
void	setHash(long pHash) Setting the hash of this node including substructure.
void	setParentKey(long pParentKey) Setting the parent key.
void	setTypeKey(int pTypeKey) Setting the type key.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeDelegate

public NodeDelegate(long pNodeKey,
            long pParentKey,
            long pHash)

Constructor.

Parameters:

pNodeKey - to be represented by this delegate.

pParentKey - to be represented by this delegate

pHash - to be represented by this delegate

Method Detail

getKind

public int getKind()

Gets the kind of the item (atomic value, element node, attribute node....).

Specified by:

getKind in interface INode

Returns:

kind of item

getDataKey

public long getDataKey()

Gets unique IData key. This key should be set over the IBucketWriteTrx.incrementDataKey for getting the correct offset within retrievals.

Specified by:

getDataKey in interface IData

Returns:

datakey

getParentKey

public long getParentKey()

Gets key of the context item's parent.

Specified by:

getParentKey in interface INode

Returns:

parent key

setParentKey

public void setParentKey(long pParentKey)

Setting the parent key.

Specified by:

setParentKey in interface INode

Parameters:

pParentKey - the parent to be set.

getHash

public long getHash()

Getting the persisted hash value for this node.

Specified by:

getHash in interface INode

Returns:

the hash stored in this node

setHash

public void setHash(long pHash)

Setting the hash of this node including substructure.

Specified by:

setHash in interface INode

Parameters:

pHash - to be set

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

getTypeKey

public int getTypeKey()

Gets value type of the item.

Specified by:

getTypeKey in interface INode

Returns:

value type

setTypeKey

public void setTypeKey(int pTypeKey)

Setting the type key.

Specified by:

setTypeKey in interface INode

Parameters:

pTypeKey - the type to be set.

hasParent

public boolean hasParent()

Declares, whether the item has a parent.

Specified by:

hasParent in interface INode

Returns:

true, if item has a parent

serialize

public void serialize(DataOutput pOutput)
               throws TTIOException

Serializing to given dataput

Specified by:

serialize in interface IData

Parameters:

pOutput - to serialize to

Throws:

TTIOException

getFunnel

public com.google.common.hash.Funnel<IData> getFunnel()

Description copied from interface: IData

Getting a Funnel for computing guava-based hashes.

Specified by:

getFunnel in interface IData

Returns:

a Funnel for this IData