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package com.sun.xml.internal.org.jvnet.staxex;

import javax.xml.namespace.NamespaceContext;
import java.util.Iterator;

Extended NamespaceContext. 
Author:
Kohsuke Kawaguchi, Paul Sandoz/**
 * Extended {@link NamespaceContext}.
 *
 * @author Kohsuke Kawaguchi
 * @author Paul Sandoz
 */
public interface NamespaceContextEx extends NamespaceContext, Iterable<NamespaceContextEx.Binding> {

    
Iterates all the in-scope namespace bindings.
 This method enumerates all the active in-scope namespace bindings. This does not include implicit bindings, such as "xml"->"http://www.w3.org/XML/1998/namespace" or ""->"" (the implicit default namespace URI.) 
 The returned iterator may not include the same prefix more than once. For example, the returned iterator may only contain f=ns2 if the document is as follows and this method is used at the bar element. 

<foo xmlns:f='ns1'>
  <bar xmlns:f='ns2'>
    ...


The iteration may be done in no particular order.
Returns:

     may return an empty iterator, but never null./**
     * Iterates all the in-scope namespace bindings.
     *
     * <p>
     * This method enumerates all the active in-scope namespace bindings.
     * This does not include implicit bindings, such as
     * {@code "xml"->"http://www.w3.org/XML/1998/namespace"}
     * or {@code ""->""} (the implicit default namespace URI.)
     *
     * <p>
     * The returned iterator may not include the same prefix more than once.
     * For example, the returned iterator may only contain {@code f=ns2}
     * if the document is as follows and this method is used at the bar element.
     *
     * <pre>{@code
     * <foo xmlns:f='ns1'>
     *   <bar xmlns:f='ns2'>
     *     ...
     * }</pre>
     *
     * <p>
     * The iteration may be done in no particular order.
     *
     * @return
     *      may return an empty iterator, but never null.
     */
    Iterator<Binding> iterator();

    
Prefix to namespace URI binding.
/**
     * Prefix to namespace URI binding.
     */
    interface Binding {
        
Gets the prefix.

The default namespace URI is represented by using an
empty string "", not null.
Returns:

     never null. String like "foo", "ns12", or ""./**
         * Gets the prefix.
         *
         * <p>
         * The default namespace URI is represented by using an
         * empty string "", not null.
         *
         * @return
         *      never null. String like "foo", "ns12", or "".
         */
        String getPrefix();

        
Gets the namespace URI.

The empty namespace URI is represented by using
an empty string "", not null.
Returns:

     never null. String like "http://www.w3.org/XML/1998/namespace",
     "urn:oasis:names:specification:docbook:dtd:xml:4.1.2", or ""./**
         * Gets the namespace URI.
         *
         * <p>
         * The empty namespace URI is represented by using
         * an empty string "", not null.
         *
         * @return
         *      never null. String like "http://www.w3.org/XML/1998/namespace",
         *      "urn:oasis:names:specification:docbook:dtd:xml:4.1.2", or "".
         */
        String getNamespaceURI();
    }
}