svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / impl / DataStoreProviderToCoverageProviderFactoryWrapper.java @ 44644
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2013 gvSIG Association.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 3
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 42891 | jjdelcerro | package org.gvsig.fmap.dal.impl; |
25 | 40435 | jjdelcerro | |
26 | 42891 | jjdelcerro | import org.gvsig.fmap.dal.ExternalStoreProviderFactory; |
27 | 40435 | jjdelcerro | import java.lang.reflect.Constructor; |
28 | 43020 | jjdelcerro | import org.gvsig.fmap.dal.DataFactoryUnit; |
29 | 40435 | jjdelcerro | |
30 | import org.gvsig.fmap.dal.DataParameters; |
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31 | import org.gvsig.fmap.dal.DataStoreProvider; |
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32 | import org.gvsig.fmap.dal.exception.InitializeException; |
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33 | 42891 | jjdelcerro | import org.gvsig.fmap.dal.spi.AbstractDataStoreProviderFactory; |
34 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.spi.DataStoreProviderServices; |
35 | import org.gvsig.tools.dynobject.DynObject; |
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36 | 43020 | jjdelcerro | import org.gvsig.tools.service.spi.Services; |
37 | 40435 | jjdelcerro | |
38 | 42891 | jjdelcerro | public class DataStoreProviderToCoverageProviderFactoryWrapper extends |
39 | AbstractDataStoreProviderFactory implements ExternalStoreProviderFactory {
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40 | 40435 | jjdelcerro | |
41 | private Class providerClass = null; |
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42 | private Class parametersClass = null; |
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43 | |||
44 | 42891 | jjdelcerro | public DataStoreProviderToCoverageProviderFactoryWrapper(String name, String description, |
45 | 40435 | jjdelcerro | Class provider, Class parametersClass) { |
46 | 42891 | jjdelcerro | super(name,description);
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47 | 40435 | jjdelcerro | this.providerClass = provider;
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48 | this.parametersClass = parametersClass;
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49 | } |
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50 | |||
51 | 42891 | jjdelcerro | @Override
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52 | 43020 | jjdelcerro | public DataFactoryUnit create(DynObject parameters, Services providerServices) {
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53 | try {
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54 | return this.createProvider( |
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55 | (DataParameters)parameters, |
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56 | (DataStoreProviderServices)providerServices |
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57 | ); |
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58 | } catch (InitializeException ex) {
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59 | throw new RuntimeException(ex); |
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60 | } |
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61 | } |
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62 | |||
63 | |||
64 | @Override
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65 | public DataStoreProvider createProvider(
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66 | DataParameters parameters, |
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67 | DataStoreProviderServices providerServices |
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68 | ) throws InitializeException {
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69 | 40435 | jjdelcerro | try {
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70 | Class[] argsTypes = new Class[] { DataParameters.class, |
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71 | DataStoreProviderServices.class }; |
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72 | Object[] args = new Object[] { parameters, providerServices }; |
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73 | |||
74 | Constructor contructor;
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75 | contructor = findConstructor(providerClass, argsTypes); |
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76 | return (DataStoreProvider) contructor.newInstance(args);
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77 | } catch (Throwable e) { |
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78 | throw new InitializeException(e); |
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79 | } |
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80 | } |
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81 | |||
82 | 42891 | jjdelcerro | @Override
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83 | 40435 | jjdelcerro | public final DynObject createParameters() { |
84 | try {
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85 | return (DynObject) parametersClass.newInstance();
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86 | } catch (Exception e) { |
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87 | throw new RuntimeException(e); |
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88 | } |
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89 | } |
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90 | |||
91 | protected Constructor findConstructor(Class clazz, Class[] types) |
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92 | throws SecurityException, NoSuchMethodException { |
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93 | try {
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94 | return clazz.getConstructor(types);
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95 | } catch (NoSuchMethodException e) { |
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96 | // Nothing to do
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97 | } |
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98 | |||
99 | // search for the required constructor
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100 | Constructor[] constrs = clazz.getConstructors(); |
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101 | boolean allMatch;
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102 | 42891 | jjdelcerro | for (Constructor constr : constrs) { |
103 | Class[] paramTypes = constr.getParameterTypes(); |
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104 | if (paramTypes.length == types.length) {
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105 | // a general candidate
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106 | allMatch = true;
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107 | for (int j = 0; j < paramTypes.length; j++) { |
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108 | if (!isParameterCompatible(types[j], paramTypes[j])) {
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109 | allMatch = false;
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110 | break;
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111 | 40435 | jjdelcerro | } |
112 | } |
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113 | 42891 | jjdelcerro | if (allMatch) {
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114 | return constr;
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115 | } |
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116 | } |
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117 | } |
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118 | StringBuilder strb = new StringBuilder(); |
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119 | 40435 | jjdelcerro | strb.append(clazz.getName()); |
120 | strb.append('(');
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121 | if (types.length > 0) { |
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122 | for (int i = 0; i < types.length - 1; i++) { |
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123 | strb.append(types[i].getName()); |
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124 | strb.append(',');
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125 | } |
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126 | strb.append(types[types.length - 1].getName());
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127 | } |
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128 | strb.append(')');
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129 | throw new NoSuchMethodException(strb.toString()); |
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130 | } |
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131 | |||
132 | private boolean isParameterCompatible(Class current, Class defined) { |
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133 | if (current == null) { |
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134 | return !defined.isPrimitive();
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135 | } else {
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136 | return current.isAssignableFrom(defined);
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137 | } |
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138 | } |
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139 | 42891 | jjdelcerro | |
140 | 40435 | jjdelcerro | } |