org.dom4j.tree

Class QNameCache

java.lang.Object

org.dom4j.tree.QNameCache

public class QNameCache
extends java.lang.Object

QNameCache caches instances of QName for reuse both across documents and within documents.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Map<Namespace,java.util.Map<java.lang.String,QName>>	namespaceCache Cache of Mapinstances indexed by namespace which contain caches of QNamefor each name
protected java.util.Map<java.lang.String,QName>	noNamespaceCache Cache of QNameinstances with no namespace

Constructor Summary

Constructors

Constructor and Description
QNameCache()
QNameCache(DocumentFactory documentFactory)

Method Summary

Modifier and Type	Method and Description
protected java.util.Map<java.lang.String,QName>	createMap() A factory method
protected QName	createQName(java.lang.String name) Factory method to create a new QName object which can be overloaded to create derived QName instances
protected QName	createQName(java.lang.String name, Namespace namespace) Factory method to create a new QName object which can be overloaded to create derived QName instances
protected QName	createQName(java.lang.String name, Namespace namespace, java.lang.String qualifiedName) Factory method to create a new QName object which can be overloaded to create derived QName instances
QName	get(java.lang.String name) DOCUMENT ME!
QName	get(java.lang.String name, Namespace namespace) DOCUMENT ME!
QName	get(java.lang.String localName, Namespace namespace, java.lang.String qName) DOCUMENT ME!
QName	get(java.lang.String qualifiedName, java.lang.String uri)
protected java.util.Map<java.lang.String,QName>	getNamespaceCache(Namespace namespace) DOCUMENT ME!
java.util.List<QName>	getQNames() Returns a list of all the QName instances currently used
QName	intern(QName qname) DOCUMENT ME!

Methods inherited from class java.lang.Object

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

Field Detail

noNamespaceCache

protected java.util.Map<java.lang.String,QName> noNamespaceCache

Cache of QNameinstances with no namespace

namespaceCache

protected java.util.Map<Namespace,java.util.Map<java.lang.String,QName>> namespaceCache

Cache of Mapinstances indexed by namespace which contain caches of QNamefor each name

Constructor Detail

QNameCache

public QNameCache()

QNameCache

public QNameCache(DocumentFactory documentFactory)

Method Detail

getQNames

public java.util.List<QName> getQNames()

Returns a list of all the QName instances currently used

Returns:

DOCUMENT ME!

get

public QName get(java.lang.String name)

DOCUMENT ME!

Parameters:

name - DOCUMENT ME!

Returns:

the QName for the given name and no namepsace

get

public QName get(java.lang.String name,
                 Namespace namespace)

DOCUMENT ME!

Parameters:

name - DOCUMENT ME!

namespace - DOCUMENT ME!

Returns:

the QName for the given local name and namepsace

get

public QName get(java.lang.String localName,
                 Namespace namespace,
                 java.lang.String qName)

DOCUMENT ME!

Parameters:

localName - DOCUMENT ME!

namespace - DOCUMENT ME!

qName - DOCUMENT ME!

Returns:

the QName for the given local name, qualified name and namepsace

get

public QName get(java.lang.String qualifiedName,
                 java.lang.String uri)

intern

public QName intern(QName qname)

DOCUMENT ME!

Parameters:

qname - DOCUMENT ME!

Returns:

the cached QName instance if there is one or adds the given qname to the cache if not

getNamespaceCache

protected java.util.Map<java.lang.String,QName> getNamespaceCache(Namespace namespace)

DOCUMENT ME!

Parameters:

namespace - DOCUMENT ME!

Returns:

the cache for the given namespace. If one does not currently exist it is created.

createMap

protected java.util.Map<java.lang.String,QName> createMap()

A factory method

Returns:

a newly created Mapinstance.

createQName

protected QName createQName(java.lang.String name)

Factory method to create a new QName object which can be overloaded to create derived QName instances

Parameters:

name - DOCUMENT ME!

Returns:

DOCUMENT ME!

createQName

protected QName createQName(java.lang.String name,
                            Namespace namespace)

Factory method to create a new QName object which can be overloaded to create derived QName instances

Parameters:

name - DOCUMENT ME!

namespace - DOCUMENT ME!

Returns:

DOCUMENT ME!

createQName

protected QName createQName(java.lang.String name,
                            Namespace namespace,
                            java.lang.String qualifiedName)

Factory method to create a new QName object which can be overloaded to create derived QName instances

Parameters:

name - DOCUMENT ME!

namespace - DOCUMENT ME!

qualifiedName - DOCUMENT ME!

Returns:

DOCUMENT ME!