svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.spi / src / main / java / org / gvsig / fmap / dal / feature / spi / DataStoreProviderToFeatureStoreProviderFactoryWrapper.java @ 40435
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1 | 40435 | jjdelcerro | package org.gvsig.fmap.dal.feature.spi; |
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2 | |||
3 | import java.lang.reflect.Constructor; |
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4 | |||
5 | import org.gvsig.fmap.dal.DataParameters; |
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6 | import org.gvsig.fmap.dal.DataStoreProvider; |
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7 | import org.gvsig.fmap.dal.exception.InitializeException; |
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8 | import org.gvsig.fmap.dal.feature.FeatureStoreProviderFactory; |
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9 | import org.gvsig.fmap.dal.spi.DataStoreProviderServices; |
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10 | import org.gvsig.tools.dynobject.DynObject; |
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11 | |||
12 | public class DataStoreProviderToFeatureStoreProviderFactoryWrapper extends |
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13 | AbstractFeatureStoreProviderFactory implements FeatureStoreProviderFactory {
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14 | |||
15 | private Class providerClass = null; |
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16 | private Class parametersClass = null; |
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17 | |||
18 | public DataStoreProviderToFeatureStoreProviderFactoryWrapper(String name, String description, |
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19 | Class provider, Class parametersClass) { |
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20 | super(name, description);
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21 | this.providerClass = provider;
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22 | this.parametersClass = parametersClass;
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23 | } |
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24 | |||
25 | public DataStoreProvider createProvider(DataParameters parameters,
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26 | DataStoreProviderServices providerServices) |
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27 | throws InitializeException {
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28 | try {
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29 | Class[] argsTypes = new Class[] { DataParameters.class, |
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30 | DataStoreProviderServices.class }; |
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31 | Object[] args = new Object[] { parameters, providerServices }; |
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32 | |||
33 | Constructor contructor;
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34 | contructor = findConstructor(providerClass, argsTypes); |
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35 | return (DataStoreProvider) contructor.newInstance(args);
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36 | } catch (Throwable e) { |
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37 | throw new InitializeException(e); |
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38 | } |
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39 | } |
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40 | |||
41 | public final DynObject createParameters() { |
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42 | try {
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43 | return (DynObject) parametersClass.newInstance();
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44 | } catch (Exception e) { |
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45 | throw new RuntimeException(e); |
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46 | } |
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47 | } |
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48 | |||
49 | protected Constructor findConstructor(Class clazz, Class[] types) |
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50 | throws SecurityException, NoSuchMethodException { |
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51 | try {
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52 | return clazz.getConstructor(types);
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53 | } catch (NoSuchMethodException e) { |
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54 | // Nothing to do
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55 | } |
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56 | |||
57 | // search for the required constructor
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58 | Constructor[] constrs = clazz.getConstructors(); |
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59 | boolean allMatch;
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60 | for (int i = 0; i < constrs.length; i++) { |
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61 | Class[] paramTypes = constrs[i].getParameterTypes(); |
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62 | if (paramTypes.length == types.length) { // a general candidate |
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63 | allMatch = true;
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64 | for (int j = 0; j < paramTypes.length; j++) { |
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65 | if (!isParameterCompatible(types[j], paramTypes[j])) {
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66 | allMatch = false;
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67 | break;
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68 | } |
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69 | } |
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70 | if (allMatch) {
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71 | return constrs[i];
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72 | } |
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73 | |||
74 | } |
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75 | } |
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76 | StringBuffer strb = new StringBuffer(); |
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77 | strb.append(clazz.getName()); |
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78 | strb.append('(');
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79 | if (types.length > 0) { |
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80 | for (int i = 0; i < types.length - 1; i++) { |
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81 | strb.append(types[i].getName()); |
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82 | strb.append(',');
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83 | } |
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84 | strb.append(types[types.length - 1].getName());
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85 | } |
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86 | strb.append(')');
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87 | throw new NoSuchMethodException(strb.toString()); |
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88 | } |
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89 | |||
90 | private boolean isParameterCompatible(Class current, Class defined) { |
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91 | if (current == null) { |
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92 | return !defined.isPrimitive();
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93 | } else {
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94 | return current.isAssignableFrom(defined);
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95 | } |
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96 | } |
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97 | } |