2009/05/20 - Apache Shale has been retired.

   /*
    * 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.
   */
  
  /*
   * $Id: AttributeBean.java 464373 2006-10-16 04:21:54Z rahul $
   */
  package org.apache.shale.clay.config.beans;
  
  import java.io.Serializable;
  
  
  /***
   * <p>Represents a value for a component property or a tag attribute.
   * Instances of this class will be placed in the {@link ComponentBean}
   * <code>attributes</code> collection.</p>
   */
  public class AttributeBean extends SymbolBean implements Serializable {
  
      /***
       * <p>Unique id used by the <code>Serializable</code> interface.</p>
       */
      private static final long serialVersionUID = 3102689599088266442L;
  
      /***
       * <p>Mnemonic the signifies the a method binding expression.</p>
       */
      public static final String BINDING_TYPE_METHOD = "MB";
  
      /***
       * <p>Mnemonic that signifies a value binding expression.</p>
       */
      public static final String BINDING_TYPE_VALUE = "VB";
  
      /***
       * <p>This code means that if the attribute value contains an expression,
       * it will be evalutated before populating the component.</p>
       */
      public static final String BINDING_TYPE_EARLY = "Early";
  
      /***
       * <p>This constant indicates that the attribute value will be passed as its
       * literal value and no attempt to evaluate a contained expression will
       * be preformed.</p>
       */
      public static final String BINDING_TYPE_NONE = "None";
  
      /***
       * <p>The parent meta component that contains this attribute in its
       * attributes collection.
       * </p>
       */
      private ComponentBean hasAParent = null;
  
      /***
       * <p>A meta component reference that this object is inherited from.</p>
       */
      private AttributeBean isAParent = null;
  
      /***
       * <p>This property represents the type of binding allowed
       * for this attribute by the component.</p>
       */
      private String bindingType = null;
  
      /***
       * <p>A boolean flag that the meta component inheritance has been
       * resolved for this object instance.
       * </p>
       */
      private boolean isInheritanceFinal = false;
  
      /***
       * @return named value list that represents the object's state
       */
      public String toString() {
          StringBuffer buff = new StringBuffer();
          buff.append("name=\"").append(getName()).append("\" value=\"").append(getValue())
              .append("\" bindingType=\"").append(bindingType).append("\"");
          return buff.toString();
      }
  
      /***
       * <p>Returns the parent component containing this object instance.</p>
       *
       * @return composition parent
      */
     public ComponentBean getHasAParent() {
         return hasAParent;
     }
 
     /***
      * <p>Sets the parent component that contains this object instance.</p>
      *
      * @param bean the composition parent
      */
     public void setHasAParent(ComponentBean bean) {
         hasAParent = bean;
     }
 
     /***
      * <p>Returns a parent component that this component extends in terms of
      * a meta relationship.</p>
      *
      * @return returns the inheritance parent
      */
     public AttributeBean getIsAParent() {
         return isAParent;
     }
 
     /***
      * <p>Sets a parent component that this component extends in terms of
      * a meta relationship.</p>
      *
      * @param bean the inheritance parent
      */
     public void setIsAParent(AttributeBean bean) {
         isAParent = bean;
     }
 
     /***
      * <p>Returns a String that indicates the binding type for the attribute.  The
      * valid values include ("VB", "MB", "None", "Early").</p>
      *
      * @return binding type enumeration
      */
     public String getBindingType() {
        return bindingType;
     }
 
     /***
      * <p>Sets a String that indicates the binding type for the attribute.  The
      * valid values include ("VB", "MB", "None", "Early").</p>
      *
      * @param bindingType enumeration
      */
     public void setBindingType(String bindingType) {
         if (bindingType != null
            && (bindingType.equals(BINDING_TYPE_METHOD)
            || bindingType.equals(BINDING_TYPE_VALUE)
            || bindingType.equals(BINDING_TYPE_EARLY)
            || bindingType.equals(BINDING_TYPE_NONE))) {
 
             this.bindingType = bindingType;
         } else {
             this.bindingType = null;
         }
     }
 
     /***
      * <p>Returns boolean that indicates the meta inheritance relationships have
      * been resolved.</p>
      *
      * @return <code>true</code> if inheritance has been resolved
      */
     public boolean isInheritanceFinal() {
         return isInheritanceFinal;
     }
 
     /***
      * <p>Sets a boolean that indicates the meta inheritance relationships have
      * been resolved.</p>
      *
      * @param b <code>true</code> if inheritance has been resolved
      */
     public void setInheritanceFinal(boolean b) {
         isInheritanceFinal = b;
     }
 
 }