java.lang.Object
- net.sf.saxon.s9api.QName

```
public class QName
extends java.lang.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

Fields
Modifier and Type	Field	Description
`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_DATE_TIME_STAMP`	QName denoting the schema type xs:dateTimeStamp *
`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

Constructors
Constructor	Description
`QName(java.lang.String localName)`	Construct a QName from a localName alone.
`QName(java.lang.String uri, java.lang.String lexical)`	Construct a QName using a namespace URI and a lexical representation.
`QName(java.lang.String prefix, java.lang.String uri, java.lang.String localName)`	Construct a QName using a namespace prefix, a namespace URI, and a local name (in that order).
`QName(java.lang.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.
`QName(javax.xml.namespace.QName qName)`	Construct a QName from a JAXP QName object
`QName(NamespaceUri uri, java.lang.String lexical)`	Construct a QName using a namespace URI and a lexical representation.
`QName(StructuredQName sqName)`	Construct a QName from a StructuredQName

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object other)`	Test whether two QNames are equal.
`static QName`	`fromClarkName(java.lang.String expandedName)`	Factory method to construct a QName from a string containing the expanded QName in Clark notation, that is, `{uri}local`
`static QName`	`fromEQName(java.lang.String expandedName)`	Factory method to construct a QName from a string containing the expanded QName in EQName notation, that is, `Q{uri}local`
`java.lang.String`	`getClarkName()`	The expanded name, as a string using the notation devised by James Clark.
`java.lang.String`	`getEQName()`
`java.lang.String`	`getLocalName()`	The local part of the QName
`java.lang.String`	`getNamespace()`	The namespace URI of the QName, as a string.
`NamespaceUri`	`getNamespaceUri()`	The namespace URI of the QName.
`java.lang.String`	`getNamespaceURI()`	Deprecated. since 12.0 - use `getNamespaceUri()` or `getNamespace()`
`java.lang.String`	`getPrefix()`	Get the prefix of the QName.
`StructuredQName`	`getStructuredQName()`	Get the underlying StructuredQName
`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.
`java.lang.String`	`toString()`	Convert the value to a string.

Methods inherited from class java.lang.Object
clone, finalize, 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 *
  - XS_DATE_TIME_STAMP
```
public static final QName XS_DATE_TIME_STAMP
```
    QName denoting the schema type xs:dateTimeStamp *
- Constructor Detail
  - QName
```
public QName(java.lang.String prefix,
             java.lang.String uri,
             java.lang.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(java.lang.String uri,
             java.lang.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(NamespaceUri uri,
             java.lang.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 NamespaceUri.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
    
    Since:
    
    12.3
  - QName
```
public QName(java.lang.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(java.lang.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. The EQName syntax "Q{uri}local" and the ClarkName syntax "{uri}local" are also accepted.
    
    element - The element node whose in-scope namespaces are to be used to resolve the prefix part of the lexical QName.
    
    Throws:
    
    java.lang.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(javax.xml.namespace.QName qName)
```
    Construct a QName from a JAXP QName object
    
    Parameters:
    
    qName - the JAXP QName object
  - QName
```
public QName(StructuredQName sqName)
```
    Construct a QName from a StructuredQName
    
    Parameters:
    
    sqName - the StructuredQName
- Method Detail
  - fromClarkName
```
public static QName fromClarkName(java.lang.String expandedName)
                           throws java.lang.IllegalArgumentException
```
    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.
    
    Throws:
    
    java.lang.IllegalArgumentException - if the format of the supplied name is incorrect
  - fromEQName
```
public static QName fromEQName(java.lang.String expandedName)
```
    Factory method to construct a QName from a string containing the expanded QName in EQName notation, that is, Q{uri}local
    The prefix part of the QName will be set to an empty string.
    
    Parameters:
    
    expandedName - The URI in EQName notation: Q{uri}local if the name is in a namespace. For a name in no namespace, either of the forms Q{}local or simply local are accepted.
    
    Returns:
    
    the QName corresponding to the supplied name in EQName 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 was at one time used to determine whether the XML 1.0 or XML 1.1 rules for forming names are used. However, the XML 1.0 and 1.1 rules are now aligned, so this argument is no longer used.
    
    Returns:
    
    true if the name is valid, false if not
  - getPrefix
```
public java.lang.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
  - getNamespace
```
public java.lang.String getNamespace()
```
    The namespace URI of the QName, as a string. 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
  - getNamespaceURI
```
@Deprecated
public java.lang.String getNamespaceURI()
```
    Deprecated.
    since 12.0 - use getNamespaceUri() or getNamespace()
    
    The namespace URI of the QName, as a string. Returns the zero-length string if the QName is not in a namespace.
    Retained for backwards compatibility; deprecated.
    
    Returns:
    
    the namespace part of the QName, or "" for a name in no namespace
  - getNamespaceUri
```
public NamespaceUri getNamespaceUri()
```
    The namespace URI of the QName. Returns NamespaceUri.NULL (the zero-length string) if the QName is not in a namespace.
    
    Returns:
    
    the namespace part of the QName, or NamespaceUri#NULL for a name in no namespace
  - getLocalName
```
public java.lang.String getLocalName()
```
    The local part of the QName
    
    Returns:
    
    the local part of the QName
  - getClarkName
```
public java.lang.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.
  - getEQName
```
public java.lang.String getEQName()
```
  - toString
```
public java.lang.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 java.lang.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 java.lang.Object
    
    Returns:
    
    a hashCode for the QName
  - equals
```
public boolean equals(java.lang.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 java.lang.Object
    
    Returns:
    
    true if the namespace URIs are equal and the local parts are equal, when compared character-by-character.
  - getStructuredQName
```
public StructuredQName getStructuredQName()
```
    Get the underlying StructuredQName
    
    Returns:
    
    the underlying StructuredQName

Class QName

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

XS_STRING

XS_BOOLEAN

XS_DECIMAL

XS_FLOAT

XS_DOUBLE

XS_DURATION

XS_DATE_TIME

XS_TIME

XS_DATE

XS_G_YEAR_MONTH

XS_G_YEAR

XS_G_MONTH_DAY

XS_G_DAY

XS_G_MONTH

XS_HEX_BINARY

XS_BASE64_BINARY

XS_ANY_URI

XS_QNAME

XS_NOTATION

XS_INTEGER

XS_NON_POSITIVE_INTEGER

XS_NEGATIVE_INTEGER

XS_LONG

XS_INT

XS_SHORT

XS_BYTE

XS_NON_NEGATIVE_INTEGER

XS_POSITIVE_INTEGER

XS_UNSIGNED_LONG

XS_UNSIGNED_INT

XS_UNSIGNED_SHORT

XS_UNSIGNED_BYTE

XS_NORMALIZED_STRING

XS_TOKEN

XS_LANGUAGE

XS_NMTOKEN

XS_NMTOKENS

XS_NAME

XS_NCNAME

XS_ID

XS_IDREF

XS_IDREFS

XS_ENTITY

XS_ENTITIES

XS_UNTYPED

XS_UNTYPED_ATOMIC

XS_ANY_ATOMIC_TYPE

XS_YEAR_MONTH_DURATION

XS_DAY_TIME_DURATION

XS_DATE_TIME_STAMP

Constructor Detail

QName

QName

QName

QName

QName

QName

QName

Method Detail

fromClarkName

fromEQName

isValid

getPrefix

getNamespace

getNamespaceURI

getNamespaceUri

getLocalName

getClarkName

getEQName

toString

hashCode

equals

getStructuredQName