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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ChainedConverter.java | 50% | 46,2% | 40% | 45,5% |
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1 | /* | |
2 | * Copyright 2004 Ronald Blaschke. | |
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 org.rblasch.convert.converters; | |
17 | ||
18 | import org.rblasch.convert.MetaConverter; | |
19 | import org.rblasch.convert.type.Type; | |
20 | ||
21 | import java.util.Iterator; | |
22 | import java.util.List; | |
23 | ||
24 | public final class ChainedConverter extends AbstractConverter { | |
25 | private final List /*<MetaConverter>*/ converters; | |
26 | ||
27 | /** | |
28 | * Initialize this chained converter. | |
29 | * | |
30 | * @param converters | |
31 | */ | |
32 | 535 | public ChainedConverter(final List /*<MetaConverter>*/ converters) { |
33 | 535 | this.converters = converters; |
34 | } | |
35 | ||
36 | 0 | public Type getSourceType() { |
37 | 0 | return ((MetaConverter) converters.get(0)).getSourceType(); |
38 | } | |
39 | ||
40 | 0 | public Type getDestinationType() { |
41 | 0 | return ((MetaConverter) converters.get(converters.size() - 1)).getDestinationType(); |
42 | } | |
43 | ||
44 | 0 | public int getWeight() { |
45 | 0 | int totalWeight = 0; |
46 | 0 | for (final Iterator i = converters.iterator(); i.hasNext();) { |
47 | 0 | final MetaConverter mc = (MetaConverter) i.next(); |
48 | 0 | totalWeight += mc.getWeight(); |
49 | } | |
50 | 0 | return totalWeight; |
51 | } | |
52 | ||
53 | /** | |
54 | * Converts the given value to the destination types. | |
55 | * | |
56 | * @param obj Object of types <code>getSourceType()</code>, or <code>null</code> | |
57 | * @return <code>null</code> iff value is <code>null</code>, object of types | |
58 | * <code>getDestinationType()</code> | |
59 | * @throws org.apache.commons.convert.NoSuchConversionException | |
60 | * Given object not of types <code>getSourceType()</code> | |
61 | * @throws org.apache.commons.convert.ConversionFailedException | |
62 | * Conversion failed; see exception message and cause for details | |
63 | */ | |
64 | 26 | public Object convert(final Object obj) throws Exception { |
65 | 26 | Object tmp = obj; |
66 | 26 | for (final Iterator i = converters.iterator(); i.hasNext();) { |
67 | 52 | final MetaConverter c = (MetaConverter) i.next(); |
68 | 52 | tmp = c.getConverter().convert(tmp); |
69 | } | |
70 | 26 | return tmp; |
71 | } | |
72 | } |
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