| /* |
| * 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.openjpa.kernel; |
| |
| import org.apache.openjpa.enhance.FieldManager; |
| |
| /** |
| * FieldManager type used to transfer a single field value. |
| * |
| * @author Abe White |
| */ |
| class TransferFieldManager |
| implements FieldManager { |
| |
| protected double dblval = 0; |
| protected long longval = 0; |
| protected Object objval = null; |
| protected int field = -1; |
| |
| public boolean fetchBooleanField(int field) { |
| return longval == 1; |
| } |
| |
| public byte fetchByteField(int field) { |
| return (byte) longval; |
| } |
| |
| public char fetchCharField(int field) { |
| return (char) longval; |
| } |
| |
| public double fetchDoubleField(int field) { |
| return dblval; |
| } |
| |
| public float fetchFloatField(int field) { |
| return (float) dblval; |
| } |
| |
| public int fetchIntField(int field) { |
| return (int) longval; |
| } |
| |
| public long fetchLongField(int field) { |
| return longval; |
| } |
| |
| public Object fetchObjectField(int field) { |
| // don't hold onto strong ref to object |
| Object val = objval; |
| objval = null; |
| return val; |
| } |
| |
| public short fetchShortField(int field) { |
| return (short) longval; |
| } |
| |
| public String fetchStringField(int field) { |
| return (String) objval; |
| } |
| |
| public void storeBooleanField(int field, boolean curVal) { |
| this.field = field; |
| longval = (curVal) ? 1 : 0; |
| } |
| |
| public void storeByteField(int field, byte curVal) { |
| this.field = field; |
| longval = curVal; |
| } |
| |
| public void storeCharField(int field, char curVal) { |
| this.field = field; |
| longval = (long) curVal; |
| } |
| |
| public void storeDoubleField(int field, double curVal) { |
| this.field = field; |
| dblval = curVal; |
| } |
| |
| public void storeFloatField(int field, float curVal) { |
| this.field = field; |
| dblval = curVal; |
| } |
| |
| public void storeIntField(int field, int curVal) { |
| this.field = field; |
| longval = curVal; |
| } |
| |
| public void storeLongField(int field, long curVal) { |
| this.field = field; |
| longval = curVal; |
| } |
| |
| public void storeObjectField(int field, Object curVal) { |
| this.field = field; |
| objval = curVal; |
| } |
| |
| public void storeShortField(int field, short curVal) { |
| this.field = field; |
| longval = curVal; |
| } |
| |
| public void storeStringField(int field, String curVal) { |
| this.field = field; |
| objval = curVal; |
| } |
| |
| /** |
| * Clear any held state. Fields are also cleared automatically when fetched. |
| */ |
| public void clear() { |
| dblval = 0; |
| longval = 0; |
| objval = null; |
| field = -1; |
| } |
| } |