org.htmlunit.xpath.xml.dtm.ref

Class ExpandedNameTable

java.lang.Object

org.htmlunit.xpath.xml.dtm.ref.ExpandedNameTable

public class ExpandedNameTable
extends Object

This is a default implementation of a table that manages mappings from expanded names to expandedNameIDs.

%OPT% The performance of the getExpandedTypeID() method is very important to DTM building. To get the best performance out of this class, we implement a simple hash algorithm directly into this class, instead of using the inefficient java.util.Hashtable. The code for the get and put operations are combined in getExpandedTypeID() method to share the same hash calculation code. We only need to implement the rehash() interface which is used to expand the hash table.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ATTRIBUTE
static int	ELEMENT
static int	NAMESPACE

Constructor Summary

Constructors

Constructor and Description
ExpandedNameTable() Create an expanded name table.

Method Summary

Modifier and Type	Method and Description
int	getExpandedTypeID(String namespace, String localName, int type) Given an expanded name represented by namespace, local name and node type, return an ID.
int	getLocalNameID(int expandedNameID) Given an expanded-name ID, return the local name ID.
int	getNamespaceID(int expandedNameID) Given an expanded-name ID, return the namespace URI ID.
short	getType(int expandedNameID) Given an expanded-name ID, return the local name ID.

Methods inherited from class java.lang.Object

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

Field Detail

ELEMENT

public static final int ELEMENT

See Also:

Constant Field Values

ATTRIBUTE

public static final int ATTRIBUTE

See Also:

Constant Field Values

NAMESPACE

public static final int NAMESPACE

See Also:

Constant Field Values

Constructor Detail

ExpandedNameTable

public ExpandedNameTable()

Create an expanded name table.

Method Detail

getExpandedTypeID

public int getExpandedTypeID(String namespace,
                             String localName,
                             int type)

Given an expanded name represented by namespace, local name and node type, return an ID. If the expanded-name does not exist in the internal tables, the entry will be created, and the ID will be returned. Any additional nodes that are created that have this expanded name will use this ID.

Parameters:

namespace - The namespace

localName - The local name

type - The node type

Returns:

the expanded-name id of the node.

getLocalNameID

public final int getLocalNameID(int expandedNameID)

Given an expanded-name ID, return the local name ID.

Parameters:

expandedNameID - an ID that represents an expanded-name.

Returns:

The id of this local name.

getNamespaceID

public final int getNamespaceID(int expandedNameID)

Given an expanded-name ID, return the namespace URI ID.

Parameters:

expandedNameID - an ID that represents an expanded-name.

Returns:

The id of this namespace.

getType

public final short getType(int expandedNameID)

Given an expanded-name ID, return the local name ID.

Parameters:

expandedNameID - an ID that represents an expanded-name.

Returns:

The id of this local name.