View Javadoc

    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  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  package org.apache.commons.scxml.env.jsp;
    18
    19  import javax.servlet.jsp.el.ELException;
    20  import javax.servlet.jsp.el.VariableResolver;
    21
    22  import org.apache.commons.scxml.Context;
    23  import org.apache.commons.scxml.env.SimpleContext;
    24
    25  /***
    26   * EL Context for SCXML interpreter.
    27   *
    28   */
    29  public class ELContext extends SimpleContext implements VariableResolver {
    30
    31      /*** Serial version UID. */
    32      private static final long serialVersionUID = 1L;
    33
    34      /***
    35       * Constructor.
    36       *
    37       */
    38      public ELContext() {
    39          super();
    40      }
    41
    42      /***
    43       * Constructor.
    44       *
    45       * @param parent A parent Context, can be null
    46       */
    47      public ELContext(final Context parent) {
    48          super(parent);
    49      }
    50
    51      /***
    52       * Resolves the specified variable. Returns null if the variable is
    53       * not found.
    54       *
    55       * @param pName The variable to resolve
    56       * @return Object The value of the variable, or null, if it does not
    57       *                exist
    58       * @throws ELException While resolving the variable
    59       * @see javax.servlet.jsp.el.VariableResolver#resolveVariable(String)
    60       */
    61      public Object resolveVariable(final String pName) throws ELException {
    62          return get(pName);
    63      }
    64
    65  }
    66