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The source code

/*
 * $Header: /home/cvs/jakarta-tomcat/src/share/org/apache/jasper/runtime/TagPoolManager.java,v 1.4 2004/02/23 06:26:32 billbarker Exp $
 *
 *
 *  Copyright 1999-2004 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 org.apache.jasper.runtime;


/**
 * This interface provides methods for tag handler pooling.
 * It specifies management of pools of tag handlers.  Normally,
 * one TagPoolManager derivative is stored per application
 * context.  This allows tag pooling on a per web application
 * scope.
* * TagPoolManagers manage TagHandlerPools. TagHandlerPools * are uniquely named per reuse scope. The current JSP spec * allows for tag reuse if all of these conditions are met: *
    *
  • tag scope doesnt conflict *
  • tags are of the same type *
  • tags use the same set of attributes *
* * @author Casey Lucas * @see org.apache.tomcat.facade.TagPoolManagerInterceptor */ public interface TagPoolManager { /** * This constant is the name of the TagPoolManager attribute * stored into each ServletContext (if tag pooling is enabled.) */ public static final String CONTEXT_ATTRIBUTE_NAME = "org.apache.jasper.runtime.TagPoolManager"; /** * Obtain a named pool. Each uniquely named pool holds tag * handlers. * * @param poolName unique name of the tag pool * @param handlerClass * the type of tag handler objects stored by the pool * @return the pool that should be used for this poolName and handlerClass */ public TagHandlerPool getPool(String poolName, Class handlerClass); /** * This method allows the pool manager to shutdown all of its * pools. Normally, this involves calling relase for all * its tag handlers. */ public void shutdown(); }
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