Package org.richfaces.webapp.taglib

Source Code of org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor

/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
*/
package org.richfaces.webapp.taglib;

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;

/**
* Maps {@link MethodExpression} to {@link MethodBinding}
* @author Maksim Kaszynski
*
*/
@SuppressWarnings("deprecation")
public class MethodBindingMethodExpressionAdaptor extends MethodBinding implements StateHolder{
 
  private MethodExpression expression;
  private boolean tranzient;
  /* (non-Javadoc)
   * @see javax.faces.el.MethodBinding#getType(javax.faces.context.FacesContext)
   */
  public MethodBindingMethodExpressionAdaptor() {
    // TODO Auto-generated constructor stub
  }
 
  public MethodBindingMethodExpressionAdaptor(MethodExpression expression) {
    super();
    this.expression = expression;
  }

  @Override
  public Class<?> getType(FacesContext context) throws MethodNotFoundException {
    try {
      return expression.getMethodInfo(context.getELContext()).getReturnType();
    } catch (javax.el.MethodNotFoundException e) {
      throw new MethodNotFoundException(e);
    }
  }

  /* (non-Javadoc)
   * @see javax.faces.el.MethodBinding#invoke(javax.faces.context.FacesContext, java.lang.Object[])
   */
  @Override
  public Object invoke(FacesContext context, Object[] params)
      throws EvaluationException, MethodNotFoundException {
    try {
      return expression.invoke(context.getELContext(), params);
    } catch (javax.el.MethodNotFoundException e) {
      throw new MethodNotFoundException(e);
    } catch (ELException e) {
      throw new EvaluationException(e);
    }
  }

  public boolean isTransient() {
    return tranzient;
  }
 
  public void restoreState(FacesContext context, Object state) {
    expression = (MethodExpression) state;
  }
 
  public Object saveState(FacesContext context) {
    return expression;
  }
 
  public void setTransient(boolean newTransientValue) {
    tranzient = newTransientValue;
  }

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

Related Classes of org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.