01: /*
02:
03: Derby - Class org.apache.derby.iapi.types.CDCDataValueFactory
04:
05: Licensed to the Apache Software Foundation (ASF) under one or more
06: contributor license agreements. See the NOTICE file distributed with
07: this work for additional information regarding copyright ownership.
08: The ASF licenses this file to you under the Apache License, Version 2.0
09: (the "License"); you may not use this file except in compliance with
10: the License. You may obtain a copy of the License at
11:
12: http://www.apache.org/licenses/LICENSE-2.0
13:
14: Unless required by applicable law or agreed to in writing, software
15: distributed under the License is distributed on an "AS IS" BASIS,
16: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17: See the License for the specific language governing permissions and
18: limitations under the License.
19:
20: */
21:
22: package org.apache.derby.iapi.types;
23:
24: import java.util.Properties;
25: import org.apache.derby.iapi.services.info.JVMInfo;
26: import org.apache.derby.iapi.services.monitor.ModuleSupportable;
27: import org.apache.derby.iapi.error.StandardException;
28:
29: /**
30: * DataValueFactory implementation for J2ME/CDC/Foundation.
31: * Cannot use SQLDecimal since that requires java.math.BigDecimal.
32: * Uses BigIntegerDecimal for DECIMAL support.
33: *
34: * @see DataValueFactory
35: */
36:
37: public class CDCDataValueFactory extends DataValueFactoryImpl implements
38: ModuleSupportable {
39: /**
40: * Make the constructor public.
41: *
42: */
43: public CDCDataValueFactory() {
44: }
45:
46: /* (non-Javadoc)
47: * @see org.apache.derby.iapi.services.monitor.ModuleSupportable#canSupport(java.util.Properties)
48: */
49: public boolean canSupport(Properties properties) {
50: return JVMInfo.J2ME;
51: }
52:
53: public NumberDataValue getDecimalDataValue(Long value,
54: NumberDataValue previous) throws StandardException {
55: if (previous == null)
56: previous = new BigIntegerDecimal();
57:
58: previous.setValue(value);
59: return previous;
60: }
61:
62: public NumberDataValue getDecimalDataValue(String value)
63: throws StandardException {
64: NumberDataValue ndv = new BigIntegerDecimal();
65:
66: ndv.setValue(value);
67: return ndv;
68: }
69:
70: public NumberDataValue getNullDecimal(NumberDataValue dataValue) {
71: if (dataValue == null) {
72: return new BigIntegerDecimal();
73: } else {
74: dataValue.setToNull();
75: return dataValue;
76: }
77: }
78: }
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