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## net.sf.saxon.xpath
Class NamespaceContextImpl

    java.lang.Object
      net.sf.saxon.xpath.NamespaceContextImpl

All Implemented Interfaces:
  NamespaceContext, NamespaceResolver

    public class NamespaceContextImpl

extends Object
implements NamespaceContext, NamespaceResolver

This class bridges between the JAXP 1.3 NamespaceContext interface and Saxon's equivalent NamespaceResolver interface. It allows any implementation of the Saxon NamespaceResolver to be wrapped as a JAXP NamespaceContext.

Constructor Summary
`NamespaceContextImpl(NamespaceResolver resolver)` Constructor: wrap a Saxon NamespaceResolver as a JAXP NamespaceContext

Method Summary
`String` | `getNamespaceURI(String prefix)` Implement the JAXP getNamespaceURI() method in terms of the Saxon-specific methods
`String` | `getPrefix(String uri)` Get the prefix bound to a particular namespace URI, if there is one, or null if not (JAXP method)
`Iterator` | `getPrefixes(String uri)` Get all the prefixes mapped to a given namespace URI (JAXP method)
`String` | `getURIForPrefix(String prefix, boolean useDefault)` Get the namespace URI corresponding to a given prefix.
`Iterator` | `iteratePrefixes()` Get an iterator over all the prefixes declared in this namespace context.

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

Constructor Detail

### NamespaceContextImpl

    public NamespaceContextImpl(NamespaceResolver resolver)

  Constructor: wrap a Saxon NamespaceResolver as a JAXP NamespaceContext

  Parameters:
    `resolver` - the Saxon NamespaceResolver

Method Detail

### getURIForPrefix

    public String getURIForPrefix(String prefix,
                                  boolean useDefault)

  Get the namespace URI corresponding to a given prefix. Return null if the prefix is not in scope.

  Specified by:
    `getURIForPrefix` in interface `NamespaceResolver`
  Parameters:
    `prefix` - the namespace prefix
    `useDefault` - true if the default namespace is to be used when the prefix is ""
  Returns:
    the uri for the namespace, or null if the prefix is not in scope

### iteratePrefixes

    public Iterator iteratePrefixes()

  Get an iterator over all the prefixes declared in this namespace context. This will include the default namespace (prefix="") and the XML namespace where appropriate

  Specified by:
    `iteratePrefixes` in interface `NamespaceResolver`

### getNamespaceURI

    public String getNamespaceURI(String prefix)

  Implement the JAXP getNamespaceURI() method in terms of the Saxon-specific methods

  Specified by:
    `getNamespaceURI` in interface `NamespaceContext`
  Parameters:
    `prefix` - a namespace prefix
  Returns:
    the corresponding URI, if the prefix is bound, or "" otherwise

### getPrefix

    public String getPrefix(String uri)

  Get the prefix bound to a particular namespace URI, if there is one, or null if not (JAXP method)

  Specified by:
    `getPrefix` in interface `NamespaceContext`
  Parameters:
    `uri` - the namespace URI
  Returns:
    the prefix bound to the URI if there is one, or null if not

### getPrefixes

    public Iterator getPrefixes(String uri)

  Get all the prefixes mapped to a given namespace URI (JAXP method)

  Specified by:
    `getPrefixes` in interface `NamespaceContext`
  Parameters:
    `uri` - the namespace URI
  Returns:
    an iterator over all the prefixes bound to this namespace URI

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