org.apache.xml.utils
Class QName

java.lang.Object
  org.apache.xml.utils.QName

All Implemented Interfaces:

Serializable

public class QName

extends Object

implements Serializable

Class to represent a qualified name: "The name of an internal XSLT object, specifically a named template (see [7 Named Templates]), a mode (see [6.7 Modes]), an attribute set (see [8.1.4 Named Attribute Sets]), a key (see [14.2 Keys]), a locale (see [14.3 Number Formatting]), a variable or a parameter (see [12 Variables and Parameters]) is specified as a QName. If it has a prefix, then the prefix is expanded into a URI reference using the namespace declarations in effect on the attribute in which the name occurs. The expanded name consisting of the local part of the name and the possibly null URI reference is used as the name of the object. The default namespace is not used for unprefixed names."

See Also:

Serialized Form

Field Summary

protected String	_localName The local name.
protected String	_namespaceURI The namespace URI.
protected String	_prefix The namespace prefix.
private int	m_hashCode The cached hashcode, which is calculated at construction time.
static String	S_XMLNAMESPACEURI The XML namespace.

Constructor Summary

QName()
Constructs an empty QName. 20001019: Try making this public, to support Serializable?

QName(String localName)
Construct a QName from a string, without namespace resolution.

QName(String localName, boolean validate)
Construct a QName from a string, without namespace resolution.

QName(String qname, org.w3c.dom.Element namespaceContext, PrefixResolver resolver)
Construct a QName from a string, resolving the prefix using the given namespace context and prefix resolver.

QName(String qname, org.w3c.dom.Element namespaceContext, PrefixResolver resolver, boolean validate)
Construct a QName from a string, resolving the prefix using the given namespace context and prefix resolver.

QName(String qname, PrefixResolver resolver)
Construct a QName from a string, resolving the prefix using the given namespace stack.

QName(String qname, PrefixResolver resolver, boolean validate)
Construct a QName from a string, resolving the prefix using the given namespace stack.

QName(String qname, Stack namespaces)
Construct a QName from a string, resolving the prefix using the given namespace stack.

QName(String qname, Stack namespaces, boolean validate)
Construct a QName from a string, resolving the prefix using the given namespace stack.

QName(String namespaceURI, String localName)
Constructs a new QName with the specified namespace URI and local name.

QName(String namespaceURI, String localName, boolean validate)
Constructs a new QName with the specified namespace URI and local name.

QName(String namespaceURI, String prefix, String localName)
Constructs a new QName with the specified namespace URI, prefix and local name.

QName(String namespaceURI, String prefix, String localName, boolean validate)
Constructs a new QName with the specified namespace URI, prefix and local name.

Method Summary

boolean	equals(Object object) Override equals and agree that we're equal if the passed object is a QName and it matches the name of the arg.
boolean	equals(String ns, String localPart) Override equals and agree that we're equal if the passed object is a string and it matches the name of the arg.
String	getLocalName() Returns the local part of the qualified name.
String	getLocalPart() Get the local part of the qualified name.
static String	getLocalPart(String qname) Returns the local name of the given node.
String	getNamespace() Get the namespace of the qualified name.
String	getNamespaceURI() Returns the namespace URI.
String	getPrefix() Returns the namespace prefix.
static String	getPrefixFromXMLNSDecl(String attRawName) This function tells if a raw attribute name is a xmlns attribute.
static String	getPrefixPart(String qname) Returns the local name of the given node.
static QName	getQNameFromString(String name) Given a string, create and return a QName object
int	hashCode() Return the cached hashcode of the qualified name.
static boolean	isXMLNSDecl(String attRawName) This function tells if a raw attribute name is a xmlns attribute.
String	toNamespacedString() Return the string representation of the qualified name using the the '{ns}foo' notation.
String	toString() Return the string representation of the qualified name, using the prefix if available, or the '{ns}foo' notation if not.

Methods inherited from class java.lang.Object

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

Field Detail

_localName

protected String _localName

The local name.

_namespaceURI

protected String _namespaceURI

The namespace URI.

_prefix

protected String _prefix

The namespace prefix.

S_XMLNAMESPACEURI

public static final String S_XMLNAMESPACEURI

The XML namespace.

See Also:

Constant Field Values

m_hashCode

private int m_hashCode

The cached hashcode, which is calculated at construction time.

Constructor Detail

QName

public QName()

Constructs an empty QName. 20001019: Try making this public, to support Serializable? -- JKESS

QName

public QName(String namespaceURI,
             String localName)

Constructs a new QName with the specified namespace URI and local name.

Parameters:

namespaceURI - The namespace URI if known, or null

localName - The local name

QName

public QName(String namespaceURI,
             String localName,
             boolean validate)

Constructs a new QName with the specified namespace URI and local name.

Parameters:

namespaceURI - The namespace URI if known, or null

localName - The local name

validate - If true the new QName will be validated and an IllegalArgumentException will be thrown if it is invalid.

QName

public QName(String namespaceURI,
             String prefix,
             String localName)

Constructs a new QName with the specified namespace URI, prefix and local name.

Parameters:

namespaceURI - The namespace URI if known, or null

prefix - The namespace prefix is known, or null

localName - The local name

QName

public QName(String namespaceURI,
             String prefix,
             String localName,
             boolean validate)

Constructs a new QName with the specified namespace URI, prefix and local name.

Parameters:

namespaceURI - The namespace URI if known, or null

prefix - The namespace prefix is known, or null

localName - The local name

validate - If true the new QName will be validated and an IllegalArgumentException will be thrown if it is invalid.

QName

public QName(String localName)

Construct a QName from a string, without namespace resolution. Good for a few odd cases.

Parameters:

localName - Local part of qualified name

QName

public QName(String localName,
             boolean validate)

Construct a QName from a string, without namespace resolution. Good for a few odd cases.

Parameters:

localName - Local part of qualified name

validate - If true the new QName will be validated and an IllegalArgumentException will be thrown if it is invalid.

QName

public QName(String qname,
             Stack namespaces)

Construct a QName from a string, resolving the prefix using the given namespace stack. The default namespace is not resolved.

Parameters:

qname - Qualified name to resolve

namespaces - Namespace stack to use to resolve namespace

QName

public QName(String qname,
             Stack namespaces,
             boolean validate)

Construct a QName from a string, resolving the prefix using the given namespace stack. The default namespace is not resolved.

Parameters:

qname - Qualified name to resolve

namespaces - Namespace stack to use to resolve namespace

validate - If true the new QName will be validated and an IllegalArgumentException will be thrown if it is invalid.

QName

public QName(String qname,
             org.w3c.dom.Element namespaceContext,
             PrefixResolver resolver)

Construct a QName from a string, resolving the prefix using the given namespace context and prefix resolver. The default namespace is not resolved.

Parameters:

qname - Qualified name to resolve

namespaceContext - Namespace Context to use

resolver - Prefix resolver for this context

QName

public QName(String qname,
             org.w3c.dom.Element namespaceContext,
             PrefixResolver resolver,
             boolean validate)

Construct a QName from a string, resolving the prefix using the given namespace context and prefix resolver. The default namespace is not resolved.

Parameters:

qname - Qualified name to resolve

namespaceContext - Namespace Context to use

resolver - Prefix resolver for this context

validate - If true the new QName will be validated and an IllegalArgumentException will be thrown if it is invalid.

QName

public QName(String qname,
             PrefixResolver resolver)

Construct a QName from a string, resolving the prefix using the given namespace stack. The default namespace is not resolved.

Parameters:

qname - Qualified name to resolve

resolver - Prefix resolver for this context

QName

public QName(String qname,
             PrefixResolver resolver,
             boolean validate)

Construct a QName from a string, resolving the prefix using the given namespace stack. The default namespace is not resolved.

Parameters:

qname - Qualified name to resolve

resolver - Prefix resolver for this context

validate - If true the new QName will be validated and an IllegalArgumentException will be thrown if it is invalid.

Method Detail

getNamespaceURI

public String getNamespaceURI()

Returns the namespace URI. Returns null if the namespace URI is not known.

Returns:

The namespace URI, or null

getPrefix

public String getPrefix()

Returns the namespace prefix. Returns null if the namespace prefix is not known.

Returns:

The namespace prefix, or null

getLocalName

public String getLocalName()

Returns the local part of the qualified name.

Returns:

The local part of the qualified name

toString

public String toString()

Return the string representation of the qualified name, using the prefix if available, or the '{ns}foo' notation if not. Performs string concatenation, so beware of performance issues.

Overrides:

toString in class Object

Returns:

the string representation of the namespace

toNamespacedString

public String toNamespacedString()

Return the string representation of the qualified name using the the '{ns}foo' notation. Performs string concatenation, so beware of performance issues.

Returns:

the string representation of the namespace

getNamespace

public String getNamespace()

Get the namespace of the qualified name.

Returns:

the namespace URI of the qualified name

getLocalPart

public String getLocalPart()

Get the local part of the qualified name.

Returns:

the local part of the qualified name

hashCode

public int hashCode()

Return the cached hashcode of the qualified name.

Overrides:

hashCode in class Object

Returns:

the cached hashcode of the qualified name

See Also:

Object.equals(java.lang.Object), Hashtable

equals

public boolean equals(String ns,
                      String localPart)

Override equals and agree that we're equal if the passed object is a string and it matches the name of the arg.

Parameters:

ns - Namespace URI to compare to

localPart - Local part of qualified name to compare to

Returns:

True if the local name and uri match

equals

public boolean equals(Object object)

Override equals and agree that we're equal if the passed object is a QName and it matches the name of the arg.

Overrides:

equals in class Object

Parameters:

object - the reference object with which to compare.

Returns:

True if the qualified names are equal

See Also:

Object.hashCode(), Hashtable

getQNameFromString

public static QName getQNameFromString(String name)

Given a string, create and return a QName object

Parameters:

name - String to use to create QName

Returns:

a QName object

isXMLNSDecl

public static boolean isXMLNSDecl(String attRawName)

This function tells if a raw attribute name is a xmlns attribute.

Parameters:

attRawName - Raw name of attribute

Returns:

True if the attribute starts with or is equal to xmlns

getPrefixFromXMLNSDecl

public static String getPrefixFromXMLNSDecl(String attRawName)

This function tells if a raw attribute name is a xmlns attribute.

Parameters:

attRawName - Raw name of attribute

Returns:

Prefix of attribute

getLocalPart

public static String getLocalPart(String qname)

Returns the local name of the given node.

Parameters:

qname - Input name

Returns:

Local part of the name if prefixed, or the given name if not

getPrefixPart

public static String getPrefixPart(String qname)

Returns the local name of the given node.

Parameters:

qname - Input name

Returns:

Prefix of name or empty string if none there