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Tobago JSF 1.1-1.2 Compatibility Bridge (makes Tobago independent from differences between JSF 1.1 and JSF 1.2).

There is a newer version: 1.6.0-beta-2

package org.apache.myfaces.tobago.component;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

import javax.el.ELException;
import javax.el.MethodExpression;
import javax.faces.component.StateHolder;
import javax.faces.context.FacesContext;
import javax.faces.el.EvaluationException;
import javax.faces.el.MethodBinding;
import javax.faces.el.MethodNotFoundException;

@SuppressWarnings("deprecation")
public class MethodExpressionToMethodBinding extends MethodBinding implements StateHolder {

  private MethodExpression methodExpression;

  private boolean isTransient = false;

  public MethodExpressionToMethodBinding() {
    methodExpression = null;
  }

  /**
   * Creates a new instance of MethodExpressionToMethodBinding
   */
  public MethodExpressionToMethodBinding(MethodExpression methodExpression) {
    this.methodExpression = methodExpression;
  }

  @Override
  public String getExpressionString() {
    return methodExpression.getExpressionString();
  }

  public Class getType(FacesContext facesContext)
      throws MethodNotFoundException {

    try {
      return methodExpression.getMethodInfo(facesContext.getELContext()).getReturnType();
    } catch (javax.el.MethodNotFoundException e) {
      throw new javax.faces.el.MethodNotFoundException(e);
    } catch (ELException e) {
      throw new EvaluationException(e);
    }
  }

  public Object invoke(FacesContext facesContext, Object[] params)
      throws EvaluationException {

    try {
      return methodExpression.invoke(facesContext.getELContext(), params);
    } catch (javax.el.MethodNotFoundException e) {
      throw new javax.faces.el.MethodNotFoundException(e);
    } catch (ELException e) {
      throw new EvaluationException(e);
    }
  }


  public void restoreState(FacesContext context, Object state) {
    if (state != null) {
      methodExpression = (MethodExpression) state;
    }
  }

  public Object saveState(FacesContext context) {
    if (!isTransient) {
      return methodExpression;
    }
    return null;
  }

  public void setTransient(boolean newTransientValue) {
    isTransient = newTransientValue;
  }

  public boolean isTransient() {
    return isTransient;
  }

}