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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 * Copyright 2005-2007 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.faces.view.facelets;

/**
 * 

There are concrete subclasses within the * implementation that map concepts in the Facelet VDL page to Jakarta Server Faces Java API * calls the appropriate instances. For example, the * “validator” attribute on an input component is * specified to point to a MethodExpression that references a * method that performs the validation. There is a concrete subclass of * Metadata to perform this action when that attribute appears in a * Facelet VDL page.

* * @since 2.0 */ public abstract class Metadata { /** *

Take the action prescribed in the Jakarta Server Faces * specification for this particular VDL element attribute.

* * @param ctx The FaceletContext for this request. * @param instance The instance from the Jakarta Server Faces Java API on which the action * should be taken. For example, an instance of {@link * javax.faces.component.EditableValueHolder}. */ public abstract void applyMetadata(FaceletContext ctx, Object instance); }




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