NamespaceConstant

java.lang.Object
- net.sf.saxon.lib.NamespaceConstant

```
public class NamespaceConstant
extends Object
```
This class is not instantiated, it exists to hold a set of constants representing known namespaces. For each of these, there is a constant for the namespace URI and for many of them, there is a numeric constant used as the code for this namespace in the name pool.

This class also defines constant URIs for some objects other than namespaces - for example, URIs that identify the various object models used in the JAXP XPath API, and the Unicode codepoint collation URI.

Author:

Michael H. Kay

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`ANONYMOUS` Namespace for names allocated to anonymous types.
`static String`	`CODEPOINT_COLLATION_URI` URI identifying the Unicode codepoint collation
`static String`	`DOT_NET_TYPE` Namespace for types representing external .NET objects
`static String`	`ERR` The standard namespace for system error codes
`static String`	`EXPATH_ZIP` URI for the EXPath zip module
`static String`	`EXSLT_COMMON` Fixed namespace name for EXSLT/Common: "http://exslt.org/common"
`static String`	`EXSLT_DATES_AND_TIMES` Fixed namespace name for EXSLT/date: "http://exslt.org/dates-and-times"
`static String`	`EXSLT_MATH` Fixed namespace name for EXSLT/math: "http://exslt.org/math"
`static String`	`EXSLT_RANDOM` Fixed namespace name for EXSLT/random: "http://exslt.org/random"
`static String`	`EXSLT_SETS` Fixed namespace name for EXSLT/sets: "http://exslt.org/sets"
`static String`	`FN` The standard namespace for functions and operators
`static String`	`JAVA_TYPE` Namespace for types representing external Java objects
`static String`	`JSON` Namespace for JSON defined in XSLT 3.0
`static String`	`LOCAL` Predefined XQuery namespace for local functions
`static String`	`MAP_FUNCTIONS` Namespace URI for XPath 3.0 functions associated with maps
`static String`	`MAP_FUNCTIONS_2011` Namespace URI for XPath 3.0 functions associated with maps as defined in the 2013 XSLT specification
`static String`	`MATH` Math namespace for the XPath 3.0 math functions
`static String`	`MATHML` The MathML namespace
`static String`	`MICROSOFT_XSL` Recognize the Microsoft namespace so we can give a suitably sarcastic error message
`static String`	`NULL` A URI representing the null namespace (actually, an empty string)
`static short`	`NULL_CODE` The numeric URI code representing the null namespace (actually, zero)
`static String`	`OBJECT_MODEL_AXIOM` URI identifying the AXIOM object model for use in the JAXP 1.3 XPath API
`static String`	`OBJECT_MODEL_DOM4J` URI identifying the DOM4J object model for use in the JAXP 1.3 XPath API
`static String`	`OBJECT_MODEL_DOT_NET_DOM` URI identifying the .NET DOM object model (not used, but needed for consistency)
`static String`	`OBJECT_MODEL_JDOM` URI identifying the JDOM object model for use in the JAXP 1.3 XPath API
`static String`	`OBJECT_MODEL_SAXON` URI identifying the Saxon object model for use in the JAXP 1.3 XPath API
`static String`	`OBJECT_MODEL_XOM` URI identifying the XOM object model for use in the JAXP 1.3 XPath API
`static String`	`OUTPUT` The standard namespace for XQuery output declarations
`static String`	`SAXON` Fixed namespace name for SAXON: "http://saxon.sf.net/"
`static short`	`SAXON_CODE` Numeric code representing the SAXON namespace
`static String`	`SAXON_CONFIGURATION` URI for the Saxon configuration file
`static String`	`SAXON_GENERATED_GLOBAL` URI for the names of generated global variables
`static String`	`SCHEMA` Namespace name for XML Schema: "http://www.w3.org/2001/XMLSchema"
`static short`	`SCHEMA_CODE` Numeric code representing the schema namespace
`static String`	`SCHEMA_INSTANCE` XML-schema-defined namespace for use in instance documents ("xsi")
`static String`	`SCHEMA_VERSIONING` Namespace defined in XSD 1.1 for schema versioning
`static String`	`SCM` Namespace for the Saxon serialization of the schema component model
`static String`	`SQL` Fixed namespace name for SAXON SQL extension: "http://saxon.sf.net/sql"
`static String`	`SVG` The SVG namespace
`static String`	`XHTML` The XHTML namespace http://www.w3.org/1999/xhtml
`static String`	`XLINK` The XLink namespace
`static String`	`XML` Fixed namespace name for XML: "http://www.w3.org/XML/1998/namespace".
`static short`	`XML_CODE` Numeric code representing the XML namespace
`static String`	`XMLNS` The XMLNS namespace (used in DOM)
`static String`	`XQUERY` The xquery namespace for the XQuery 3.0 declare option
`static String`	`XQUERY_OPTIONS` The xquery-option namespace for the XQuery 3.0 feature names
`static short`	`XSI_CODE`
`static String`	`XSLT` Fixed namespace name for XSLT: "http://www.w3.org/1999/XSL/Transform"
`static short`	`XSLT_CODE` Numeric code representing the XSLT namespace

Method Summary

Methods
Modifier and Type	Method and Description
`static String`	`findSimilarNamespace(String candidate)` Find a similar namespace to one that is a possible mis-spelling
`static boolean`	`isReserved(String uri)` Determine whether a namespace is a reserved namespace
`static boolean`	`isReservedInQuery(String uri)` Determine whether a namespace is a reserved namespace
`static boolean`	`isReservedInQuery30(String uri)` Determine whether a namespace is a reserved namespace

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NULL
```
public static final String NULL
```
    A URI representing the null namespace (actually, an empty string)
    
    See Also:
    Constant Field Values
  - NULL_CODE
```
public static final short NULL_CODE
```
    The numeric URI code representing the null namespace (actually, zero)
    
    See Also:
    Constant Field Values
  - XML
```
public static final String XML
```
    Fixed namespace name for XML: "http://www.w3.org/XML/1998/namespace".
    
    See Also:
    Constant Field Values
  - XML_CODE
```
public static final short XML_CODE
```
    Numeric code representing the XML namespace
    
    See Also:
    Constant Field Values
  - XSLT
```
public static final String XSLT
```
    Fixed namespace name for XSLT: "http://www.w3.org/1999/XSL/Transform"
    
    See Also:
    Constant Field Values
  - XSLT_CODE
```
public static final short XSLT_CODE
```
    Numeric code representing the XSLT namespace
    
    See Also:
    Constant Field Values
  - SAXON
```
public static final String SAXON
```
    Fixed namespace name for SAXON: "http://saxon.sf.net/"
    
    See Also:
    Constant Field Values
  - SAXON_CODE
```
public static final short SAXON_CODE
```
    Numeric code representing the SAXON namespace
    
    See Also:
    Constant Field Values
  - SCHEMA
```
public static final String SCHEMA
```
    Namespace name for XML Schema: "http://www.w3.org/2001/XMLSchema"
    
    See Also:
    Constant Field Values
  - SCHEMA_CODE
```
public static final short SCHEMA_CODE
```
    Numeric code representing the schema namespace
    
    See Also:
    Constant Field Values
  - SCHEMA_INSTANCE
```
public static final String SCHEMA_INSTANCE
```
    XML-schema-defined namespace for use in instance documents ("xsi")
    
    See Also:
    Constant Field Values
  - XSI_CODE
```
public static final short XSI_CODE
```
    See Also:
    Constant Field Values
  - SCHEMA_VERSIONING
```
public static final String SCHEMA_VERSIONING
```
    Namespace defined in XSD 1.1 for schema versioning
    
    See Also:
    Constant Field Values
  - SQL
```
public static final String SQL
```
    Fixed namespace name for SAXON SQL extension: "http://saxon.sf.net/sql"
    
    See Also:
    Constant Field Values
  - EXSLT_COMMON
```
public static final String EXSLT_COMMON
```
    Fixed namespace name for EXSLT/Common: "http://exslt.org/common"
    
    See Also:
    Constant Field Values
  - EXSLT_MATH
```
public static final String EXSLT_MATH
```
    Fixed namespace name for EXSLT/math: "http://exslt.org/math"
    
    See Also:
    Constant Field Values
  - EXSLT_SETS
```
public static final String EXSLT_SETS
```
    Fixed namespace name for EXSLT/sets: "http://exslt.org/sets"
    
    See Also:
    Constant Field Values
  - EXSLT_DATES_AND_TIMES
```
public static final String EXSLT_DATES_AND_TIMES
```
    Fixed namespace name for EXSLT/date: "http://exslt.org/dates-and-times"
    
    See Also:
    Constant Field Values
  - EXSLT_RANDOM
```
public static final String EXSLT_RANDOM
```
    Fixed namespace name for EXSLT/random: "http://exslt.org/random"
    
    See Also:
    Constant Field Values
  - FN
```
public static final String FN
```
    The standard namespace for functions and operators
    
    See Also:
    Constant Field Values
  - OUTPUT
```
public static final String OUTPUT
```
    The standard namespace for XQuery output declarations
    
    See Also:
    Constant Field Values
  - ERR
```
public static final String ERR
```
    The standard namespace for system error codes
    
    See Also:
    Constant Field Values
  - LOCAL
```
public static final String LOCAL
```
    Predefined XQuery namespace for local functions
    
    See Also:
    Constant Field Values
  - MATH
```
public static final String MATH
```
    Math namespace for the XPath 3.0 math functions
    
    See Also:
    Constant Field Values
  - MAP_FUNCTIONS
```
public static final String MAP_FUNCTIONS
```
    Namespace URI for XPath 3.0 functions associated with maps
    
    See Also:
    Constant Field Values
  - MAP_FUNCTIONS_2011
```
public static final String MAP_FUNCTIONS_2011
```
    Namespace URI for XPath 3.0 functions associated with maps as defined in the 2013 XSLT specification
    
    See Also:
    Constant Field Values
  - JSON
```
public static final String JSON
```
    Namespace for JSON defined in XSLT 3.0
    
    See Also:
    Constant Field Values
  - MICROSOFT_XSL
```
public static final String MICROSOFT_XSL
```
    Recognize the Microsoft namespace so we can give a suitably sarcastic error message
    
    See Also:
    Constant Field Values
  - XHTML
```
public static final String XHTML
```
    The XHTML namespace http://www.w3.org/1999/xhtml
    
    See Also:
    Constant Field Values
  - SVG
```
public static final String SVG
```
    The SVG namespace
    
    See Also:
    Constant Field Values
  - MATHML
```
public static final String MATHML
```
    The MathML namespace
    
    See Also:
    Constant Field Values
  - XMLNS
```
public static final String XMLNS
```
    The XMLNS namespace (used in DOM)
    
    See Also:
    Constant Field Values
  - XLINK
```
public static final String XLINK
```
    The XLink namespace
    
    See Also:
    Constant Field Values
  - XQUERY_OPTIONS
```
public static final String XQUERY_OPTIONS
```
    The xquery-option namespace for the XQuery 3.0 feature names
    
    See Also:
    Constant Field Values
  - XQUERY
```
public static final String XQUERY
```
    The xquery namespace for the XQuery 3.0 declare option
    
    See Also:
    Constant Field Values
  - JAVA_TYPE
```
public static final String JAVA_TYPE
```
    Namespace for types representing external Java objects
    
    See Also:
    Constant Field Values
  - DOT_NET_TYPE
```
public static final String DOT_NET_TYPE
```
    Namespace for types representing external .NET objects
    
    See Also:
    Constant Field Values
  - ANONYMOUS
```
public static final String ANONYMOUS
```
    Namespace for names allocated to anonymous types. This exists so that a name fingerprint can be allocated for use as a type annotation.
    
    See Also:
    Constant Field Values
  - SCM
```
public static final String SCM
```
    Namespace for the Saxon serialization of the schema component model
    
    See Also:
    Constant Field Values
  - OBJECT_MODEL_SAXON
```
public static final String OBJECT_MODEL_SAXON
```
    URI identifying the Saxon object model for use in the JAXP 1.3 XPath API
    
    See Also:
    Constant Field Values
  - OBJECT_MODEL_XOM
```
public static final String OBJECT_MODEL_XOM
```
    URI identifying the XOM object model for use in the JAXP 1.3 XPath API
    
    See Also:
    Constant Field Values
  - OBJECT_MODEL_JDOM
```
public static final String OBJECT_MODEL_JDOM
```
    URI identifying the JDOM object model for use in the JAXP 1.3 XPath API
    
    See Also:
    Constant Field Values
  - OBJECT_MODEL_AXIOM
```
public static final String OBJECT_MODEL_AXIOM
```
    URI identifying the AXIOM object model for use in the JAXP 1.3 XPath API
    
    See Also:
    Constant Field Values
  - OBJECT_MODEL_DOM4J
```
public static final String OBJECT_MODEL_DOM4J
```
    URI identifying the DOM4J object model for use in the JAXP 1.3 XPath API
    
    See Also:
    Constant Field Values
  - OBJECT_MODEL_DOT_NET_DOM
```
public static final String OBJECT_MODEL_DOT_NET_DOM
```
    URI identifying the .NET DOM object model (not used, but needed for consistency)
    
    See Also:
    Constant Field Values
  - CODEPOINT_COLLATION_URI
```
public static final String CODEPOINT_COLLATION_URI
```
    URI identifying the Unicode codepoint collation
    
    See Also:
    Constant Field Values
  - SAXON_GENERATED_GLOBAL
```
public static final String SAXON_GENERATED_GLOBAL
```
    URI for the names of generated global variables
    
    See Also:
    Constant Field Values
  - SAXON_CONFIGURATION
```
public static final String SAXON_CONFIGURATION
```
    URI for the Saxon configuration file
    
    See Also:
    Constant Field Values
  - EXPATH_ZIP
```
public static final String EXPATH_ZIP
```
    URI for the EXPath zip module
    
    See Also:
    Constant Field Values
- Method Detail
  - isReserved
```
public static boolean isReserved(String uri)
```
    Determine whether a namespace is a reserved namespace
    
    Parameters:
    uri - the namespace URI to be tested
    
    Returns:
    true if this namespace URI is a reserved namespace
  - isReservedInQuery
```
public static boolean isReservedInQuery(String uri)
```
    Determine whether a namespace is a reserved namespace
    
    Parameters:
    uri - the namespace URI to be tested
    
    Returns:
    true if this namespace URI is reserved in XQuery
  - isReservedInQuery30
```
public static boolean isReservedInQuery30(String uri)
```
    Determine whether a namespace is a reserved namespace
    
    Parameters:
    uri - the namespace URI to be tested
    
    Returns:
    true if this namespace URI is reserved in XQuery
  - findSimilarNamespace
```
public static String findSimilarNamespace(String candidate)
```
    Find a similar namespace to one that is a possible mis-spelling
    
    Parameters:
    candidate - the possibly mis-spelt namespace
    
    Returns:
    the correct spelling of the namespace

Class NamespaceConstant

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NULL

NULL_CODE

XML

XML_CODE

XSLT

XSLT_CODE

SAXON

SAXON_CODE

SCHEMA

SCHEMA_CODE

SCHEMA_INSTANCE

XSI_CODE

SCHEMA_VERSIONING

SQL

EXSLT_COMMON

EXSLT_MATH

EXSLT_SETS

EXSLT_DATES_AND_TIMES

EXSLT_RANDOM

FN

OUTPUT

ERR

LOCAL

MATH

MAP_FUNCTIONS

MAP_FUNCTIONS_2011

JSON

MICROSOFT_XSL

XHTML

SVG

MATHML

XMLNS

XLINK

XQUERY_OPTIONS

XQUERY

JAVA_TYPE

DOT_NET_TYPE

ANONYMOUS

SCM

OBJECT_MODEL_SAXON

OBJECT_MODEL_XOM

OBJECT_MODEL_JDOM

OBJECT_MODEL_AXIOM

OBJECT_MODEL_DOM4J

OBJECT_MODEL_DOT_NET_DOM

CODEPOINT_COLLATION_URI

SAXON_GENERATED_GLOBAL

SAXON_CONFIGURATION

EXPATH_ZIP

Method Detail

isReserved

isReservedInQuery

isReservedInQuery30

findSimilarNamespace