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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
    17  package org.apache.commons.jelly;
    18
    19  /***
    20   * <p><code>Script</code> represents a Jelly script.
    21   * A Script <b>must</b> be thread safe so care should be taken on the
    22   * implementations of Scripts. However Tags are only used in a single thread
    23   * (each thread will have create its own Tags for the Script it is running)
    24   * so multi threading is not a concern for Tag developers.</p>
    25   *
    26   * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
    27   * @version $Revision: 155420 $
    28   */
    29  public interface Script {
    30
    31      /*** Called by the parser to allow a more efficient
    32       * representation of the script to be used.
    33       */
    34      public Script compile() throws JellyException;
    35
    36      /*** Evaluates the body of a tag */
    37      public void run(JellyContext context, XMLOutput output) throws JellyTagException;
    38
    39  }