/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package javax.xml.rpc.encoding;

/**
 * The interface <code>javax.xml.rpc.encoding.TypeMappingRegistry</code>
 * defines a registry of TypeMapping instances for various encoding
 * styles.
 *
 * @version 1.0
 */
public interface TypeMappingRegistry extends java.io.Serializable {

    /**
     * Registers a <code>TypeMapping</code> instance with the
     * <code>TypeMappingRegistry</code>. This method replaces any
     * existing registered <code>TypeMapping</code> instance for
     * the specified <code>encodingStyleURI</code>.
     *
     * @param encodingStyleURI An encoding style specified as an URI.
     *             An example is "http://schemas.xmlsoap.org/soap/encoding/"
     * @param mapping TypeMapping instance
     *
     * @return Previous TypeMapping associated with the specified
     *     <code>encodingStyleURI</code>, or <code>null</code>
     *     if there was no TypeMapping associated with the specified
     *     <code>encodingStyleURI</code>
     *
     * @throws javax.xml.rpc.JAXRPCException if there is any error that prevents
     *              the registration of the <code>TypeMapping</code> for
     *              the specified <code>encodingStyleURI</code>
     */
    public TypeMapping register(String encodingStyleURI, TypeMapping mapping);

    /**
     * Registers the <code>TypeMapping</code> instance that is default
     * for all encoding styles supported by the
     * <code>TypeMappingRegistry</code>. A default <code>TypeMapping</code>
     * should include serializers and deserializers that are independent
     * of and usable with any encoding style. Successive invocations
     * of the <code>registerDefault</code> method replace any existing
     * default <code>TypeMapping</code> instance.
     * <p>
     * If the default <code>TypeMapping</code> is registered, any
     * other TypeMapping instances registered through the
     * <code>TypeMappingRegistry.register</code> method (for a set
     * of encodingStyle URIs) override the default <code>TypeMapping</code>.
     *
     * @param mapping TypeMapping instance
     *
     * @throws javax.xml.rpc.JAXRPCException if there is any error that
     *              prevents the registration of the default
     *              <code>TypeMapping</code>
     */
    public void registerDefault(TypeMapping mapping);

    /**
     * Gets the registered default <code>TypeMapping</code> instance.
     * This method returns <code>null</code> if there is no registered
     * default TypeMapping in the registry.
     *
     * @return The registered default <code>TypeMapping</code> instance
     *     or <code>null</code>
     */
    public TypeMapping getDefaultTypeMapping();

    /**
     * Returns a list of registered encodingStyle URIs in this
     * <code>TypeMappingRegistry</code> instance.
     *
     * @return Array of the registered encodingStyle URIs
     */
    public String[] getRegisteredEncodingStyleURIs();

    /**
     * Returns the registered <code>TypeMapping</code> for the specified
     * encodingStyle URI. If there is no registered <code>TypeMapping</code>
     * for the specified <code>encodingStyleURI</code>, this method
     * returns <code>null</code>.
     *
     * @param encodingStyleURI Encoding style specified as an URI
     * @return TypeMapping for the specified encodingStyleURI or
     *     <code>null</code>
     */
    public TypeMapping getTypeMapping(String encodingStyleURI);

    /**
     * Creates a new empty <code>TypeMapping</code> object.
     *
     * @return TypeMapping instance.
     */
    public TypeMapping createTypeMapping();

    /**
     * Unregisters a TypeMapping instance, if present, from the specified
     * encodingStyleURI.
     *
     * @param encodingStyleURI Encoding style specified as an URI
     * @return <code>TypeMapping</code> instance that has been unregistered
     *     or <code>null</code> if there was no TypeMapping
     *     registered for the specified <code>encodingStyleURI</code>
     */
    public TypeMapping unregisterTypeMapping(String encodingStyleURI);

    /**
     * Removes a <code>TypeMapping</code> from the TypeMappingRegistry. A
     * <code>TypeMapping</code> is associated with 1 or more
     * encodingStyleURIs. This method unregisters the specified
     * <code>TypeMapping</code> instance from all associated
     * <code>encodingStyleURIs</code> and then removes this
     * TypeMapping instance from the registry.
     *
     * @param mapping TypeMapping to remove
     * @return <code>true</code> if specified <code>TypeMapping</code>
     *     is removed from the TypeMappingRegistry; <code>false</code>
     *     if the specified <code>TypeMapping</code> was not in the
     *     <code>TypeMappingRegistry</code>
     */
    public boolean removeTypeMapping(TypeMapping mapping);

    /**
     * Removes all registered TypeMappings and encodingStyleURIs
     * from this TypeMappingRegistry.
     */
    public void clear();
}