ArrayHelper


1   /**
2    *
3    *  Copyright 2004-2005 The Apache Software Foundation
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  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   *
15   *  See the License for the specific language governing permissions and
16   *  limitations under the License.
17   */
18  package org.apache.geronimo.interop.rmi.iiop;
19  
20  import org.apache.geronimo.interop.util.ArrayUtil;
21  
22  import java.lang.reflect.*;
23  
24  public class ArrayHelper implements ObjectHelper
25  {
26      private ValueType _element;
27  
28      private ObjectHelper _primitive;
29  
30      public ArrayHelper(Class   elementClass)
31      {
32          if (elementClass.isPrimitive())
33          {
34              _primitive = PrimitiveType.getArrayHelper(elementClass);
35          }
36          else
37          {
38              _element = ValueType.getInstance(elementClass);
39          }
40      }
41  
42      public Object   read(ObjectInputStream input)
43      {
44          if (_primitive != null)
45          {
46              return _primitive.read(input);
47          }
48          CdrInputStream cdrInput = input._cdrInput;
49          int n = cdrInput.read_long();
50          Object  [] array = (Object  [])Array.newInstance(_element._class, n);
51          for (int i = 0; i < n; i++)
52          {
53              array[i] = input.readObject(_element);
54          }
55          return array;
56      }
57  
58      public void write(ObjectOutputStream output, Object   value)
59      {
60          if (_primitive != null)
61          {
62              _primitive.write(output, value);
63              return;
64          }
65          CdrOutputStream cdrOutput = output._cdrOutput;
66          Object  [] array = (Object  [])value;
67          if (array == null)
68          {
69              array = ArrayUtil.EMPTY_OBJECT_ARRAY;
70          }
71          int n = array.length;
72          cdrOutput.write_long(n);
73          for (int i = 0; i < n; i++)
74          {
75              output.writeObject(_element, array[i]);
76          }
77      }
78  }
79
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