java/compiler/impl/src/com/intellij/compiler/make/FieldIdKeyDescriptor.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.compiler.make;
  17
  18 import com.intellij.util.io.KeyDescriptor;
  19
  20 import java.io.DataInput;
  21 import java.io.DataOutput;
  22 import java.io.IOException;
  23
  24 /**
  25  * @author Eugene Zhuravlev
  26 *         Date: Dec 1, 2008
  27 */
  28 class FieldIdKeyDescriptor implements KeyDescriptor<StorageFieldId> {
  29   public static final FieldIdKeyDescriptor INSTANCE = new FieldIdKeyDescriptor();
  30
  31   public int getHashCode(StorageFieldId value) {
  32     return value.hashCode();
  33   }
  34
  35   public boolean isEqual(StorageFieldId val1, StorageFieldId val2) {
  36     return val1.equals(val2);
  37   }
  38
  39   public void save(DataOutput out, StorageFieldId value) throws IOException {
  40     out.writeInt(value.getClassQName());
  41     out.writeInt(value.getFieldName());
  42   }
  43
  44   public StorageFieldId read(DataInput in) throws IOException {
  45     final int qName = in.readInt();
  46     final int fieldName = in.readInt();
  47     return new StorageFieldId(qName, fieldName);
  48   }
  49 }