Package org.apache.myfaces.tobago.facelets

Source Code of org.apache.myfaces.tobago.facelets.TagMethodExpression

/*
* 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.
*/

package org.apache.myfaces.tobago.facelets;

import javax.el.ELContext;
import javax.el.ELException;
import javax.el.MethodExpression;
import javax.el.MethodInfo;
import javax.el.MethodNotFoundException;
import javax.el.PropertyNotFoundException;
import javax.faces.FacesWrapper;
import javax.faces.view.facelets.TagAttribute;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

/*
* Was copied from MyFaces-Impl.
*/

/**
* Jacob Hookom
*/
public final class TagMethodExpression extends MethodExpression
    implements Externalizable, FacesWrapper<MethodExpression> {

  private static final long serialVersionUID = 1L;

  private String attr;
  private MethodExpression orig;

  public TagMethodExpression() {
    super();
  }

  public TagMethodExpression(TagAttribute attr, MethodExpression orig) {
    this.attr = attr.toString();
    this.orig = orig;
  }

  public MethodInfo getMethodInfo(ELContext context) {
    try {
      return this.orig.getMethodInfo(context);
    } catch (PropertyNotFoundException pnfe) {
      throw new PropertyNotFoundException(this.attr + ": " + pnfe.getMessage(), pnfe.getCause());
    } catch (MethodNotFoundException mnfe) {
      throw new MethodNotFoundException(this.attr + ": " + mnfe.getMessage(), mnfe.getCause());
    } catch (ELException e) {
      throw new ELException(this.attr + ": " + e.getMessage(), e.getCause());
    }
  }

  public Object invoke(ELContext context, Object[] params) {
    try {
      return this.orig.invoke(context, params);
    } catch (PropertyNotFoundException pnfe) {
      throw new PropertyNotFoundException(this.attr + ": " + pnfe.getMessage(), pnfe.getCause());
    } catch (MethodNotFoundException mnfe) {
      throw new MethodNotFoundException(this.attr + ": " + mnfe.getMessage(), mnfe.getCause());
    } catch (ELException e) {
      throw new ELException(this.attr + ": " + e.getMessage(), e.getCause());
    }
  }

  public String getExpressionString() {
    return this.orig.getExpressionString();
  }

  public boolean equals(Object obj) {
    return this.orig.equals(obj);
  }

  public int hashCode() {
    return this.orig.hashCode();
  }

  public boolean isLiteralText() {
    return this.orig.isLiteralText();
  }

  public void writeExternal(ObjectOutput out) throws IOException {
    out.writeObject(this.orig);
    out.writeUTF(this.attr);
  }

  public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
    this.orig = (MethodExpression) in.readObject();
    this.attr = in.readUTF();
  }

  public String toString() {
    return this.attr + ": " + this.orig;
  }

  public MethodExpression getWrapped() {
    return this.orig;
  }
}
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