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package com.sun.xml.internal.bind.v2.runtime;

import javax.xml.namespace.NamespaceContext;

import com.sun.istack.internal.NotNull;


Maintains namespace <-> prefix bindings. 
 This interface extends NamespaceContext and provides an additional functionality, which is necessary to declare namespaced attributes on elements. The added method is for self-consumption by the marshaller. This object is composed into a Serializer. 
/**
 * Maintains {@code namespace <-> prefix} bindings.
 *
 * <p>
 * This interface extends {@link NamespaceContext} and provides
 * an additional functionality, which is necessary to declare
 * namespaced attributes on elements. The added method is for
 * self-consumption by the marshaller.
 *
 * This object is composed into a Serializer.
 */
public interface NamespaceContext2 extends NamespaceContext
{
    
Declares a new namespace binding within the current context.


The prefix is automatically assigned by MarshallingContext. If
a given namespace URI is already declared, nothing happens.


It is NOT an error to declare the same namespace URI
more than once.


For marshalling to work correctly, all namespace bindings
for an element must be declared between its startElement method and
its endAttributes event. Calling the same method with the same
parameter between the endAttributes and the endElement returns
the same prefix.

Params:
  • requirePrefix – 
     If this parameter is true, this method must assign a prefix
     to this namespace, even if it's already bound to the default
     namespace. IOW, this method will never return null if this
     flag is true. This functionality is necessary to declare
     namespace URI used for attribute names.
  • preferedPrefix – 
     If the caller has any particular preference to the
     prefix, pass that as a parameter. The callee will try
     to honor it. Set null if there's no particular preference.
Returns:
     returns the assigned prefix. If the namespace is bound to
     the default namespace, null is returned.
/**
     * Declares a new namespace binding within the current context.
     *
     * <p>
     * The prefix is automatically assigned by MarshallingContext. If
     * a given namespace URI is already declared, nothing happens.
     *
     * <p>
     * It is <b>NOT</b> an error to declare the same namespace URI
     * more than once.
     *
     * <p>
     * For marshalling to work correctly, all namespace bindings
     * for an element must be declared between its startElement method and
     * its endAttributes event. Calling the same method with the same
     * parameter between the endAttributes and the endElement returns
     * the same prefix.
     *
     * @param   requirePrefix
     *      If this parameter is true, this method must assign a prefix
     *      to this namespace, even if it's already bound to the default
     *      namespace. IOW, this method will never return null if this
     *      flag is true. This functionality is necessary to declare
     *      namespace URI used for attribute names.
     * @param   preferedPrefix
     *      If the caller has any particular preference to the
     *      prefix, pass that as a parameter. The callee will try
     *      to honor it. Set null if there's no particular preference.
     *
     * @return
     *      returns the assigned prefix. If the namespace is bound to
     *      the default namespace, null is returned.
     */
    String declareNamespace( String namespaceUri, String preferedPrefix, boolean requirePrefix );

    
Forcibly make a namespace declaration in effect.
If the (prefix,uri) binding is already in-scope, this method
simply returns the assigned prefix index. Otherwise a new
declaration will be put.

/**
     * Forcibly make a namespace declaration in effect.
     *
     * If the (prefix,uri) binding is already in-scope, this method
     * simply returns the assigned prefix index. Otherwise a new
     * declaration will be put.
     */
    int force(@NotNull String uri, @NotNull String prefix);
}