net.sf.saxon.s9api
Class QName

java.lang.Object
  extended by net.sf.saxon.s9api.QName

public class QName
extends Object

The QName class represents an instance of xs:QName, as defined in the XPath 2.0 data model. Internally, it has three components, a namespace URI, a local name, and a prefix. The prefix is intended to be used only when converting the value back to a string.

This class also defines a number of QName-valued constants relating to built-in types in XML Schema

A QName is immutable.

Note that a QName is not itself an XdmItem in this model; however it can be wrapped in an XdmItem.


Field Summary
static QName XS_ANY_ATOMIC_TYPE
          QName denoting the schema type xs:anyAtomicType
static QName XS_ANY_URI
          QName denoting the schema type xs:anyURI
static QName XS_BASE64_BINARY
          QName denoting the schema type xs:base64Binary
static QName XS_BOOLEAN
          QName denoting the schema type xs:boolean
static QName XS_BYTE
          QName denoting the schema type xs:byte
static QName XS_DATE
          QName denoting the schema type xs:date
static QName XS_DATE_TIME
          QName denoting the schema type xs:dateTime
static QName XS_DAY_TIME_DURATION
          QName denoting the schema type xs:dayTimeDuration
static QName XS_DECIMAL
          QName denoting the schema type xs:decimal
static QName XS_DOUBLE
          QName denoting the schema type xs:double
static QName XS_DURATION
          QName denoting the schema type xs:duration
static QName XS_ENTITIES
          QName denoting the schema type xs:ENTITIES
static QName XS_ENTITY
          QName denoting the schema type xs:ENTITY
static QName XS_FLOAT
          QName denoting the schema type xs:float
static QName XS_G_DAY
          QName denoting the schema type xs:gDay
static QName XS_G_MONTH
          QName denoting the schema type xs:gMonth
static QName XS_G_MONTH_DAY
          QName denoting the schema type xs:gMonthDay
static QName XS_G_YEAR
          QName denoting the schema type xs:gYear
static QName XS_G_YEAR_MONTH
          QName denoting the schema type xs:gYearMonth
static QName XS_HEX_BINARY
          QName denoting the schema type xs:hexBinary
static QName XS_ID
          QName denoting the schema type xs:ID
static QName XS_IDREF
          QName denoting the schema type xs:IDREF
static QName XS_IDREFS
          QName denoting the schema type xs:IDREFS
static QName XS_INT
          QName denoting the schema type xs:int
static QName XS_INTEGER
          QName denoting the schema type xs:integer
static QName XS_LANGUAGE
          QName denoting the schema type xs:language
static QName XS_LONG
          QName denoting the schema type xs:long
static QName XS_NAME
          QName denoting the schema type xs:Name
static QName XS_NCNAME
          QName denoting the schema type xs:NCName
static QName XS_NEGATIVE_INTEGER
          QName denoting the schema type xs:negativeInteger
static QName XS_NMTOKEN
          QName denoting the schema type xs:NMTOKEN
static QName XS_NMTOKENS
          QName denoting the schema type xs:NMTOKENS
static QName XS_NON_NEGATIVE_INTEGER
          QName denoting the schema type xs:nonNegativeInteger
static QName XS_NON_POSITIVE_INTEGER
          QName denoting the schema type xs:nonPositiveInteger
static QName XS_NORMALIZED_STRING
          QName denoting the schema type xs:normalizedString
static QName XS_NOTATION
          QName denoting the schema type xs:NOTATION
static QName XS_POSITIVE_INTEGER
          QName denoting the schema type xs:positiveInteger
static QName XS_QNAME
          QName denoting the schema type xs:QName
static QName XS_SHORT
          QName denoting the schema type xs:short
static QName XS_STRING
          QName denoting the schema type xs:string
static QName XS_TIME
          QName denoting the schema type xs:time
static QName XS_TOKEN
          QName denoting the schema type xs:token
static QName XS_UNSIGNED_BYTE
          QName denoting the schema type xs:unsignedByte
static QName XS_UNSIGNED_INT
          QName denoting the schema type xs:unsignedInt
static QName XS_UNSIGNED_LONG
          QName denoting the schema type xs:unsignedLong
static QName XS_UNSIGNED_SHORT
          QName denoting the schema type xs:unsignedShort
static QName XS_UNTYPED
          QName denoting the schema type xs:untyped
static QName XS_UNTYPED_ATOMIC
          QName denoting the schema type xs:untypedAtomic
static QName XS_YEAR_MONTH_DURATION
          QName denoting the schema type xs:yearMonthDuration
 
Constructor Summary
QName(QName qName)
          Construct a QName from a JAXP QName object
QName(String localName)
          Construct a QName from a localName alone.
QName(String uri, String lexical)
          Construct a QName using a namespace URI and a lexical representation.
QName(String prefix, String uri, String localName)
          Construct a QName using a namespace prefix, a namespace URI, and a local name (in that order).
QName(String lexicalQName, XdmNode element)
          Construct a QName from a lexical QName, supplying an element node whose in-scope namespaces are to be used to resolve any prefix contained in the QName.
 
Method Summary
 boolean equals(Object other)
          Test whether two QNames are equal.
static QName fromClarkName(String expandedName)
          Factory method to construct a QName from a string containing the expanded QName in Clark notation, that is, {uri}local

The prefix part of the QName will be set to an empty string.

 String getClarkName()
          The expanded name, as a string using the notation devised by James Clark.
 String getLocalName()
          The local part of the QName
 String getNamespaceURI()
          The namespace URI of the QName.
 String getPrefix()
          Get the prefix of the QName.
 int hashCode()
          Get a hash code for the QName, to support equality matching.
 boolean isValid(Processor processor)
          Validate the QName against the XML 1.0 or XML 1.1 rules for valid names.
 String toString()
          Convert the value to a string.
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

XS_STRING

public static final QName XS_STRING
QName denoting the schema type xs:string


XS_BOOLEAN

public static final QName XS_BOOLEAN
QName denoting the schema type xs:boolean


XS_DECIMAL

public static final QName XS_DECIMAL
QName denoting the schema type xs:decimal


XS_FLOAT

public static final QName XS_FLOAT
QName denoting the schema type xs:float


XS_DOUBLE

public static final QName XS_DOUBLE
QName denoting the schema type xs:double


XS_DURATION

public static final QName XS_DURATION
QName denoting the schema type xs:duration


XS_DATE_TIME

public static final QName XS_DATE_TIME
QName denoting the schema type xs:dateTime


XS_TIME

public static final QName XS_TIME
QName denoting the schema type xs:time


XS_DATE

public static final QName XS_DATE
QName denoting the schema type xs:date


XS_G_YEAR_MONTH

public static final QName XS_G_YEAR_MONTH
QName denoting the schema type xs:gYearMonth


XS_G_YEAR

public static final QName XS_G_YEAR
QName denoting the schema type xs:gYear


XS_G_MONTH_DAY

public static final QName XS_G_MONTH_DAY
QName denoting the schema type xs:gMonthDay


XS_G_DAY

public static final QName XS_G_DAY
QName denoting the schema type xs:gDay


XS_G_MONTH

public static final QName XS_G_MONTH
QName denoting the schema type xs:gMonth


XS_HEX_BINARY

public static final QName XS_HEX_BINARY
QName denoting the schema type xs:hexBinary


XS_BASE64_BINARY

public static final QName XS_BASE64_BINARY
QName denoting the schema type xs:base64Binary


XS_ANY_URI

public static final QName XS_ANY_URI
QName denoting the schema type xs:anyURI


XS_QNAME

public static final QName XS_QNAME
QName denoting the schema type xs:QName


XS_NOTATION

public static final QName XS_NOTATION
QName denoting the schema type xs:NOTATION


XS_INTEGER

public static final QName XS_INTEGER
QName denoting the schema type xs:integer


XS_NON_POSITIVE_INTEGER

public static final QName XS_NON_POSITIVE_INTEGER
QName denoting the schema type xs:nonPositiveInteger


XS_NEGATIVE_INTEGER

public static final QName XS_NEGATIVE_INTEGER
QName denoting the schema type xs:negativeInteger


XS_LONG

public static final QName XS_LONG
QName denoting the schema type xs:long


XS_INT

public static final QName XS_INT
QName denoting the schema type xs:int


XS_SHORT

public static final QName XS_SHORT
QName denoting the schema type xs:short


XS_BYTE

public static final QName XS_BYTE
QName denoting the schema type xs:byte


XS_NON_NEGATIVE_INTEGER

public static final QName XS_NON_NEGATIVE_INTEGER
QName denoting the schema type xs:nonNegativeInteger


XS_POSITIVE_INTEGER

public static final QName XS_POSITIVE_INTEGER
QName denoting the schema type xs:positiveInteger


XS_UNSIGNED_LONG

public static final QName XS_UNSIGNED_LONG
QName denoting the schema type xs:unsignedLong


XS_UNSIGNED_INT

public static final QName XS_UNSIGNED_INT
QName denoting the schema type xs:unsignedInt


XS_UNSIGNED_SHORT

public static final QName XS_UNSIGNED_SHORT
QName denoting the schema type xs:unsignedShort


XS_UNSIGNED_BYTE

public static final QName XS_UNSIGNED_BYTE
QName denoting the schema type xs:unsignedByte


XS_NORMALIZED_STRING

public static final QName XS_NORMALIZED_STRING
QName denoting the schema type xs:normalizedString


XS_TOKEN

public static final QName XS_TOKEN
QName denoting the schema type xs:token


XS_LANGUAGE

public static final QName XS_LANGUAGE
QName denoting the schema type xs:language


XS_NMTOKEN

public static final QName XS_NMTOKEN
QName denoting the schema type xs:NMTOKEN


XS_NMTOKENS

public static final QName XS_NMTOKENS
QName denoting the schema type xs:NMTOKENS


XS_NAME

public static final QName XS_NAME
QName denoting the schema type xs:Name


XS_NCNAME

public static final QName XS_NCNAME
QName denoting the schema type xs:NCName


XS_ID

public static final QName XS_ID
QName denoting the schema type xs:ID


XS_IDREF

public static final QName XS_IDREF
QName denoting the schema type xs:IDREF


XS_IDREFS

public static final QName XS_IDREFS
QName denoting the schema type xs:IDREFS


XS_ENTITY

public static final QName XS_ENTITY
QName denoting the schema type xs:ENTITY


XS_ENTITIES

public static final QName XS_ENTITIES
QName denoting the schema type xs:ENTITIES


XS_UNTYPED

public static final QName XS_UNTYPED
QName denoting the schema type xs:untyped


XS_UNTYPED_ATOMIC

public static final QName XS_UNTYPED_ATOMIC
QName denoting the schema type xs:untypedAtomic


XS_ANY_ATOMIC_TYPE

public static final QName XS_ANY_ATOMIC_TYPE
QName denoting the schema type xs:anyAtomicType


XS_YEAR_MONTH_DURATION

public static final QName XS_YEAR_MONTH_DURATION
QName denoting the schema type xs:yearMonthDuration


XS_DAY_TIME_DURATION

public static final QName XS_DAY_TIME_DURATION
QName denoting the schema type xs:dayTimeDuration

Constructor Detail

QName

public QName(String prefix,
             String uri,
             String localName)
Construct a QName using a namespace prefix, a namespace URI, and a local name (in that order).

This constructor does not check that the components of the QName are lexically valid.

Parameters:
prefix - The prefix of the name. Use either the string "" or null for names that have no prefix (that is, they are in the default namespace)
uri - The namespace URI. Use either the string "" or null for names that are not in any namespace.
localName - The local part of the name

QName

public QName(String uri,
             String lexical)
Construct a QName using a namespace URI and a lexical representation. The lexical representation may be a local name on its own, or it may be in the form prefix:local-name.

This constructor does not check that the components of the QName are lexically valid.

Parameters:
uri - The namespace URI. Use either the string "" or null for names that are not in any namespace.
lexical - Either the local part of the name, or the prefix and local part in the format prefix:local

QName

public QName(String localName)
Construct a QName from a localName alone. The localName must not contain a colon. The resulting QName represents a name in no namespace (which therefore has no prefix)

Parameters:
localName - The local name. This must be a valid NCName, in particular it must contain no colon

QName

public QName(String lexicalQName,
             XdmNode element)
Construct a QName from a lexical QName, supplying an element node whose in-scope namespaces are to be used to resolve any prefix contained in the QName.

This constructor checks that the components of the QName are lexically valid.

If the lexical QName has no prefix, the name is considered to be in the default namespace, as defined by xmlns="...".

If the prefix of the lexical QName is not in scope, returns null.

Parameters:
lexicalQName - The lexical QName, in the form prefix:local or simply local.
element - The element node whose in-scope namespaces are to be used to resolve the prefix part of the lexical QName.
Throws:
IllegalArgumentException - If the prefix of the lexical QName is not in scope or if the lexical QName is invalid (for example, if it contains invalid characters)

QName

public QName(QName qName)
Construct a QName from a JAXP QName object

Parameters:
qName - the JAXP QName object
Method Detail

fromClarkName

public static QName fromClarkName(String expandedName)
Factory method to construct a QName from a string containing the expanded QName in Clark notation, that is, {uri}local

The prefix part of the QName will be set to an empty string.

Parameters:
expandedName - The URI in Clark notation: {uri}local if the name is in a namespace, or simply local if not.
Returns:
the QName corresponding to the supplied name in Clark notation. This will always have an empty prefix.

isValid

public boolean isValid(Processor processor)
Validate the QName against the XML 1.0 or XML 1.1 rules for valid names.

Parameters:
processor - The Processor in which the name is to be validated. This determines whether the XML 1.0 or XML 1.1 rules for forming names are used.
Returns:
true if the name is valid, false if not

getPrefix

public String getPrefix()
Get the prefix of the QName. This plays no role in operations such as comparison of QNames for equality, but is retained (as specified in XPath) so that a string representation can be reconstructed.

Returns the zero-length string in the case of a QName that has no prefix.

Returns:
the prefix part of the QName, or "" if the name has no known prefix

getNamespaceURI

public String getNamespaceURI()
The namespace URI of the QName. Returns "" (the zero-length string) if the QName is not in a namespace.

Returns:
the namespace part of the QName, or "" for a name in no namespace

getLocalName

public String getLocalName()
The local part of the QName

Returns:
the local part of the QName

getClarkName

public String getClarkName()
The expanded name, as a string using the notation devised by James Clark. If the name is in a namespace, the resulting string takes the form {uri}local. Otherwise, the value is the local part of the name.

Returns:
the name in Clark notation. If the name is not in a namespace, returns the local part of the name. Otherwise returns the concatenation of "{", the namespace part of the QName, "}", and the local part of the QName.

toString

public String toString()
Convert the value to a string. The resulting string is the lexical form of the QName, using the original prefix if there was one.

Overrides:
toString in class Object

hashCode

public int hashCode()
Get a hash code for the QName, to support equality matching. This supports the semantics of equality, which considers only the namespace URI and local name, and not the prefix.

Overrides:
hashCode in class Object
Returns:
a hashCode for the QName

equals

public boolean equals(Object other)
Test whether two QNames are equal. This supports the semantics of equality, which considers only the namespace URI and local name, and not the prefix.

Overrides:
equals in class Object
Returns:
true if the namespace URIs are equal and the local parts are equal, when compared character-by-character.


Copyright (C) Michael H. Kay. All rights reserved.