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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package org.gvsig.fmap.dal.feature.spi; |
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import java.lang.reflect.Constructor; |
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import org.gvsig.fmap.dal.DataParameters; |
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import org.gvsig.fmap.dal.DataStoreProvider; |
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import org.gvsig.fmap.dal.exception.InitializeException; |
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import org.gvsig.fmap.dal.feature.FeatureStoreProviderFactory; |
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import org.gvsig.fmap.dal.spi.DataStoreProviderServices; |
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import org.gvsig.tools.dynobject.DynObject; |
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public class DataStoreProviderToFeatureStoreProviderFactoryWrapper extends |
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AbstractFeatureStoreProviderFactory implements FeatureStoreProviderFactory {
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private Class providerClass = null; |
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private Class parametersClass = null; |
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public DataStoreProviderToFeatureStoreProviderFactoryWrapper(String name, String description, |
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Class provider, Class parametersClass) { |
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super(name, description);
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this.providerClass = provider;
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this.parametersClass = parametersClass;
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} |
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public DataStoreProvider createProvider(DataParameters parameters,
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DataStoreProviderServices providerServices) |
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throws InitializeException {
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try {
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Class[] argsTypes = new Class[] { DataParameters.class, |
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DataStoreProviderServices.class }; |
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Object[] args = new Object[] { parameters, providerServices }; |
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Constructor contructor;
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contructor = findConstructor(providerClass, argsTypes); |
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return (DataStoreProvider) contructor.newInstance(args);
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} catch (Throwable e) { |
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throw new InitializeException(e); |
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} |
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} |
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public final DynObject createParameters() { |
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try {
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return (DynObject) parametersClass.newInstance();
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} catch (Exception e) { |
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throw new RuntimeException(e); |
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} |
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} |
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protected Constructor findConstructor(Class clazz, Class[] types) |
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throws SecurityException, NoSuchMethodException { |
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try {
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return clazz.getConstructor(types);
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} catch (NoSuchMethodException e) { |
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// Nothing to do
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} |
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// search for the required constructor
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Constructor[] constrs = clazz.getConstructors(); |
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boolean allMatch;
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for (int i = 0; i < constrs.length; i++) { |
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Class[] paramTypes = constrs[i].getParameterTypes(); |
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if (paramTypes.length == types.length) { // a general candidate |
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allMatch = true;
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for (int j = 0; j < paramTypes.length; j++) { |
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if (!isParameterCompatible(types[j], paramTypes[j])) {
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allMatch = false;
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break;
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} |
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} |
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if (allMatch) {
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return constrs[i];
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} |
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} |
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} |
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StringBuffer strb = new StringBuffer(); |
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strb.append(clazz.getName()); |
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strb.append('(');
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if (types.length > 0) { |
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for (int i = 0; i < types.length - 1; i++) { |
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strb.append(types[i].getName()); |
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strb.append(',');
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} |
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strb.append(types[types.length - 1].getName());
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} |
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strb.append(')');
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throw new NoSuchMethodException(strb.toString()); |
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} |
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private boolean isParameterCompatible(Class current, Class defined) { |
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if (current == null) { |
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return !defined.isPrimitive();
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} else {
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return current.isAssignableFrom(defined);
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} |
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} |
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} |