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    1   /*
    2    *
    3    *   Copyright 2005 The Apache Software Foundation.
    4    *
    5    *  Licensed under the Apache License, Version 2.0 (the "License");
    6    *  you may not use this file except in compliance with the License.
    7    *  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   *  Unless required by applicable law or agreed to in writing, software
    12   *  distributed under the License is distributed on an "AS IS" BASIS,
    13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   *  See the License for the specific language governing permissions and
    15   *  limitations under the License.
    16   *
    17   */
    18  package org.apache.commons.scxml.env.jsp;
    19
    20  import javax.servlet.jsp.el.ELException;
    21  import javax.servlet.jsp.el.VariableResolver;
    22
    23  import org.apache.commons.scxml.Context;
    24  import org.apache.commons.scxml.env.SimpleContext;
    25
    26  /***
    27   * EL Context for SCXML interpreter.
    28   *
    29   */
    30  public class ELContext extends SimpleContext implements VariableResolver {
    31
    32      /***
    33       * Constructor.
    34       *
    35       */
    36      public ELContext() {
    37          super();
    38      }
    39
    40      /***
    41       * Constructor.
    42       *
    43       * @param parent A parent Context, can be null
    44       */
    45      public ELContext(final Context parent) {
    46          super(parent);
    47      }
    48
    49      /***
    50       * Resolves the specified variable. Returns null if the variable is
    51       * not found.
    52       *
    53       * @param pName The variable to resolve
    54       * @return Object The value of the variable, or null, if it does not
    55       *                exist
    56       * @throws ELException While resolving the variable
    57       * @see javax.servlet.jsp.el.VariableResolver#resolveVariable(String)
    58       */
    59      public Object resolveVariable(final String pName) throws ELException {
    60          return get(pName);
    61      }
    62
    63  }
    64