The NamespaceContext.java Java example source code
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package javax.xml.namespace;
import java.util.Iterator;
/**
* <p>Interface for read only XML Namespace context processing.
*
* <p>An XML Namespace has the properties:
* <ul>
* <li>Namespace URI:
* Namespace name expressed as a URI to which the prefix is bound</li>
* <li>prefix: syntactically, this is the part of the attribute name
* following the <code>XMLConstants.XMLNS_ATTRIBUTE
* ("xmlns") in the Namespace declaration</li>
* </ul>
* <p>example:
* <code><element xmlns:prefix="http://Namespace-name-URI">
*
* <p>All get*(*) methods operate in the current scope
* for Namespace URI and prefix resolution.</p>
*
* <p>Note that a Namespace URI can be bound to
* <strong>multiple prefixes in the current scope. This can
* occur when multiple <code>XMLConstants.XMLNS_ATTRIBUTE
* ("xmlns") Namespace declarations occur in the same Start-Tag and
* refer to the same Namespace URI. e.g.<br />
* <pre>
* <element xmlns:prefix1="http://Namespace-name-URI"
* xmlns:prefix2="http://Namespace-name-URI">
* </pre>
* This can also occur when the same Namespace URI is used in multiple
* <code>XMLConstants.XMLNS_ATTRIBUTE ("xmlns") Namespace
* declarations in the logical parent element hierarchy. e.g.<br />
* <pre>
* <parent xmlns:prefix1="http://Namespace-name-URI">
* <child xmlns:prefix2="http://Namespace-name-URI">
* ...
* </child>
* </parent>
* </pre>
*
* <p>A prefix can only be bound to a single
* Namespace URI in the current scope.</p>
*
* @author <a href="mailto:Jeff.Suttor@Sun.com">Jeff Suttor
* @see javax.xml.XMLConstants
* javax.xml.XMLConstants for declarations of common XML values
* @see <a href="http://www.w3.org/TR/xmlschema-2/#QName">
* XML Schema Part2: Datatypes</a>
* @see <a href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
* Namespaces in XML</a>
* @see <a href="http://www.w3.org/XML/xml-names-19990114-errata">
* Namespaces in XML Errata</a>
* @since 1.5
*/
public interface NamespaceContext {
/**
* <p>Get Namespace URI bound to a prefix in the current scope.
*
* <p>When requesting a Namespace URI by prefix, the following
* table describes the returned Namespace URI value for all
* possible prefix values:</p>
*
* <table border="2" rules="all" cellpadding="4">
* <thead>
* <tr>
* <td align="center" colspan="2">
* <code>getNamespaceURI(prefix)
* return value for specified prefixes
* </td>
* </tr>
* <tr>
* <td>prefix parameter 
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