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    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   
   18   package org.apache.jdo.impl.model.java;
   19   
   20   import org.apache.jdo.model.java.JavaType;
   21   
   22   /**
   23    * A PrimitiveType instance represents a primitive type as defined in the
   24    * Java language. There are eight primitive types: <code>boolean</code>,
   25    * <code>byte</code>, <code>short</code>, <code>int</code>,
   26    * <code>long</code>, <code>char</code>, 
   27    * <code>float</code>, <code>double</code>.
   28    * <p>
   29    * Class PredefinedType provides public static final variables referring
   30    * to the JavaType representation for primtive types.
   31    * 
   32    * @see PredefinedType#booleanType
   33    * @see PredefinedType#byteType
   34    * @see PredefinedType#shortType
   35    * @see PredefinedType#intType
   36    * @see PredefinedType#longType
   37    * @see PredefinedType#charType
   38    * @see PredefinedType#floatType
   39    * @see PredefinedType#doubleType
   40    *
   41    * @author Michael Bouschen
   42    * @since JDO 1.0.1
   43    */
   44   public class PrimitiveType 
   45       extends PredefinedType
   46   {
   47       /** The JavaType of the corresponding Java wrapper class type. */
   48       private WrapperClassType wrapperClassType;
   49   
   50       /** 
   51        * Constructor.
   52        * @param clazz the Class instance representing the type
   53        */
   54       protected PrimitiveType(Class clazz)
   55       {
   56           super(clazz, null);
   57       }
   58   
   59       /** 
   60        * Returns <code>true</code> if this JavaType represents a primitive
   61        * type.
   62        * @return <code>true</code> if this JavaTypre represents a primitive
   63        * type; <code>false</code> otherwise.
   64        */
   65       public boolean isPrimitive() 
   66       {
   67           return true;
   68       }
   69   
   70       /** 
   71        * Returns <code>true</code> if this JavaType represents a type whoses
   72        * values may be treated as values rather than refernces during
   73        * storing. 
   74        * @return <code>true</code> if this JavaType represents a value type;
   75        * <code>false</code> otherwise.
   76        */
   77       public boolean isValue() 
   78       {
   79           return true;
   80       }
   81   
   82       // ===== Methods not defined in JavaType =====
   83   
   84       /** 
   85        * Returns the JavaType instance of the Java wrapper class that
   86        * corresponds to this primitive type.
   87        * @return the JavaType of the corresponding Java wrapper class.
   88        */
   89       public WrapperClassType getWrapperClassType()
   90       {
   91           return wrapperClassType;
   92       }
   93       
   94       /** 
   95        * Sets the JavaType instance of the corresponding Java wrapper class.
   96        * @param wrapperClassType the JavaType representing the corresponding
   97        * Java wrapper class.
   98        */
   99       void setWrapperClassType(WrapperClassType wrapperClassType)
  100       {
  101           this.wrapperClassType = wrapperClassType;
  102       }
  103       
  104   }

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