Classes in this File | Line Coverage | Branch Coverage | Complexity | |||||||
MappingDerivationStrategy |
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| 1.0;1 |
1 | 1020 | /* |
2 | * Copyright 2004 The Apache Software Foundation. |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | package org.apache.commons.betwixt.strategy; |
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17 | ||
18 | /** |
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19 | * <p>Pluggable strategy determines whether introspection or bind time |
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20 | * typing should be used when finding mappings. |
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21 | * The type of a property is determined at introspection time but |
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22 | * the actual type of the instance can differ at bind time (when the |
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23 | * xml is actually being processed). This strategy is used to set |
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24 | * (at a per-element level) whether the bind or introspection |
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25 | * time type should be used to calculate the mapping to be used. |
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26 | * </p> |
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27 | * <p> |
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28 | * <strong>Note:</strong> this strategy is intentionally course. |
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29 | * Typically, the best approach is to use a custom strategy to set |
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30 | * coursely grained rules (for example: all implemetations of 'IAnimal' |
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31 | * use bind time type mapping) and then dot betwixt files to provide |
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32 | * refinements. |
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33 | * </p> |
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34 | * @since 0.7 |
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35 | * @author <a href='http://commons.apache.org'>Apache Commons Team</a>, |
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36 | * <a href='http://www.apache.org'>Apache Software Foundation</a> |
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37 | */ |
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38 | 3060 | public abstract class MappingDerivationStrategy { |
39 | ||
40 | /** |
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41 | * Implementation that always uses bind time type mapping |
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42 | */ |
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43 | 1020 | public static final MappingDerivationStrategy USE_BIND_TIME_TYPE |
44 | 1020 | = new MappingDerivationStrategy() { |
45 | public boolean useBindTimeTypeForMapping(Class propertyType, Class singluarPropertyType) { |
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46 | 21154 | return true; |
47 | } |
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48 | }; |
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49 | ||
50 | /** |
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51 | * Implementation that always uses introspection time type mapping |
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52 | */ |
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53 | 1020 | public static final MappingDerivationStrategy USE_INTROSPECTION_TIME_TYPE |
54 | 1020 | = new MappingDerivationStrategy() { |
55 | public boolean useBindTimeTypeForMapping(Class propertyType, Class singluarPropertyType) { |
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56 | 169 | return false; |
57 | } |
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58 | }; |
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59 | ||
60 | /** |
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61 | * The default Betwixt strategy. |
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62 | */ |
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63 | 1020 | public static final MappingDerivationStrategy DEFAULT = USE_BIND_TIME_TYPE; |
64 | ||
65 | /** |
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66 | * Should bind time type be used for all elements of the given property type? |
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67 | * @param propertyType <code>Class</code> typing the property, not null |
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68 | * @param singluarPropertyType <code>Class</code> composing the collective |
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69 | * or null if the property is not collective |
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70 | * @return true if bind time type should be used for the mapping |
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71 | */ |
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72 | public abstract boolean useBindTimeTypeForMapping(Class propertyType, Class singluarPropertyType); |
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73 | } |