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    1   /*
    2    * Copyright 2002,2004 The Apache Software Foundation.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  package org.apache.commons.jelly.tags.core;
    17
    18  import org.apache.commons.jelly.JellyContext;
    19  import org.apache.commons.jelly.JellyTagException;
    20  import org.apache.commons.jelly.TagSupport;
    21  import org.apache.commons.jelly.XMLOutput;
    22
    23  /***
    24   * A tag which creates a new child variable scope for its body.
    25   * So any variables defined within its body will no longer be in scope
    26   * after this tag.
    27   *
    28   * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
    29   * @version $Revision: 155420 $
    30   */
    31  public class ScopeTag extends TagSupport {
    32
    33      // Tag interface
    34      //-------------------------------------------------------------------------
    35      public void doTag(XMLOutput output) throws JellyTagException {
    36          JellyContext newContext = context.newJellyContext();
    37          getBody().run(newContext, output);
    38      }
    39  }