svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_dataFile / src / org / gvsig / fmap / data / store / dbf / DBFStoreProvider.java @ 23914
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package org.gvsig.fmap.data.store.dbf; |
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import java.io.File; |
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import java.text.DateFormat; |
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import java.text.ParseException; |
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import java.util.ArrayList; |
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import java.util.Date; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Locale; |
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import org.gvsig.fmap.data.DataExplorer; |
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import org.gvsig.fmap.data.DataStoreParameters; |
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import org.gvsig.fmap.data.DataTypes; |
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import org.gvsig.fmap.data.exceptions.CloseException; |
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import org.gvsig.fmap.data.exceptions.CreateException; |
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import org.gvsig.fmap.data.exceptions.DataException; |
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import org.gvsig.fmap.data.exceptions.InitializeException; |
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import org.gvsig.fmap.data.exceptions.OpenException; |
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import org.gvsig.fmap.data.exceptions.ReadException; |
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import org.gvsig.fmap.data.feature.EditableFeatureType; |
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import org.gvsig.fmap.data.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.data.feature.FeatureQuery; |
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import org.gvsig.fmap.data.feature.FeatureReference; |
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import org.gvsig.fmap.data.feature.FeatureType; |
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import org.gvsig.fmap.data.feature.exceptions.PerformEditingException; |
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import org.gvsig.fmap.data.feature.exceptions.UnknowDataTypeException; |
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import org.gvsig.fmap.data.feature.impl.DefaultFeatureType; |
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import org.gvsig.fmap.data.feature.spi.AbstractFeatureStoreProvider; |
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import org.gvsig.fmap.data.feature.spi.FeatureData; |
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import org.gvsig.fmap.data.feature.spi.FeatureSetProvider; |
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import org.gvsig.fmap.data.feature.spi.FeatureStoreProvider; |
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import org.gvsig.fmap.data.feature.spi.FeatureStoreProviderServices; |
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import org.gvsig.fmap.data.resource.exception.AccessResourceException; |
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import org.gvsig.fmap.data.resource.exception.ResourceBeginException; |
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import org.gvsig.fmap.data.resource.exception.ResourceNotifyChangesException; |
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import org.gvsig.fmap.data.resource.exception.ResourceNotifyCloseException; |
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import org.gvsig.fmap.data.resource.exception.ResourceNotifyDisposeException; |
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import org.gvsig.fmap.data.resource.file.FileResource; |
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import org.gvsig.fmap.data.resource.spi.ResourceConsumer; |
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import org.gvsig.fmap.data.resource.spi.ResourceProvider; |
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import org.gvsig.fmap.data.store.dbf.utils.DbaseFile; |
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import org.gvsig.metadata.Metadata; |
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import org.gvsig.tools.exception.NotYetImplemented; |
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import com.iver.utiles.XMLEntity; |
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import com.iver.utiles.XMLException; |
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public class DBFStoreProvider extends AbstractFeatureStoreProvider implements |
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ResourceConsumer {
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public static String STORE_NAME = "DBFStore"; |
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public static String STORE_DESCRIPTION = "DBF file"; |
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// private DBFResource dbf = null;
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private DbaseFile dbfFile = null; |
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private ResourceProvider resource;
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protected Metadata metadata;
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private static final Locale ukLocale = new Locale("en", "UK"); |
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public String getName() { |
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return STORE_NAME;
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} |
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protected DBFStoreParameters getParameters() {
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return (DBFStoreParameters) this.store.getParameters(); |
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} |
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public FeatureStoreProvider initialize(FeatureStoreProviderServices store)
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throws InitializeException {
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super.initialize(store);
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DBFStoreParameters dbfParameters = (DBFStoreParameters) this.store
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.getParameters(); |
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resource = this.createResource(FileResource.RESOURCE_TYPE_NAME,
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new Object[] { getParameters().getFile() }); |
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resource.addConsumer(this);
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// DBFResource tmpResource = new DBFResource(dbfParameters);
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//
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// try {
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// this.dbf = (DBFResource) this.store.addResource(tmpResource);
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// } catch (DataException e1) {
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// throw new InitializeException(this.getName(), e1);
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// }
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this.initFeatureType();
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return this; |
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} |
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public DataExplorer getExplorer() throws ReadException { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public FeatureData getFeatureDataByReference(FeatureReference reference, FeatureType featureType)
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throws DataException {
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return this.getFeatureDataByIndex(((DBFFeatureReference) reference).getIndex(), |
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featureType); |
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} |
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public void performEditing() throws PerformEditingException { |
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// TODO Auto-generated method stub
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} |
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public XMLEntity getXMLEntity() throws XMLException { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public void setXMLEntity(XMLEntity xml) throws XMLException { |
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// TODO Auto-generated method stub
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} |
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/**
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*
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* Only for persistenced features
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*
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* @param index
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* @param featureType
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* @return
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* @throws ReadException
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*/
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protected FeatureData getFeatureDataByIndex(long index, |
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FeatureType featureType) throws DataException {
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this.open();
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this.resource.begin();
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try {
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if (index >= this.getFeatureCount()) { |
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// FIXME
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throw new ArrayIndexOutOfBoundsException("" + index); |
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} |
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FeatureData featureData = this.createFeatureData(featureType);
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Iterator iterator = featureType.iterator();
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while (iterator.hasNext()) {
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FeatureAttributeDescriptor descriptor = (FeatureAttributeDescriptor) iterator |
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.next(); |
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this.loadValue(featureData, (int) index, descriptor); |
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} |
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featureData.setReference(new DBFFeatureReference(this, index)); |
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return featureData;
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} finally {
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this.resource.end();
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} |
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} |
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/*
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* ==================================================
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*/
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public FeatureData createFeatureData(FeatureType type) throws DataException { |
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return new DBFFeatureData((DefaultFeatureType) type); |
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} |
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/*
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* ===================================================
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*/
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FeatureStoreProviderServices getProviderServices() {
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return this.store; |
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} |
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private void initFeatureType() throws InitializeException { |
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try {
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this.open();
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this.resource.begin();
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} catch (DataException e) {
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throw new InitializeException(this.getName(), e); |
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} |
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try {
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int fieldCount = -1; |
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fieldCount = dbfFile.getFieldCount(); |
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EditableFeatureType fType = this.store.createFeatureType();
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for (int i = 0; i < fieldCount; i++) { |
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char fieldType = dbfFile.getFieldType(i);
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int attrType;
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int precision = 0; |
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if (fieldType == 'L') { |
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attrType = DataTypes.BOOLEAN; |
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} else if ((fieldType == 'F') || (fieldType == 'N')) { |
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precision = dbfFile.getFieldDecimalLength(i); |
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if (precision > 0) { |
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attrType = DataTypes.DOUBLE; |
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} else {
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attrType = DataTypes.INT; |
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} |
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} else if (fieldType == 'C') { |
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attrType = DataTypes.STRING; |
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} else if (fieldType == 'D') { |
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attrType = DataTypes.DATE; |
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} else {
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throw new InitializeException(this.getName(), |
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new UnknowDataTypeException(
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dbfFile.getFieldName(i), "" + fieldType,
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this.getName()));
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} |
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fType.add(dbfFile.getFieldName(i), attrType, |
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dbfFile.getFieldLength(i)).setPrecision(precision); |
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} |
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FeatureType defaultType = fType.getNotEditableCopy(); |
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List types = new ArrayList(1); |
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types.add(defaultType); |
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this.store.setFeatureTypes(types, defaultType);
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} finally {
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this.resource.end();
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} |
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} |
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protected void loadValue(FeatureData featureData, int rowIndex, |
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FeatureAttributeDescriptor descriptor) throws ReadException {
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if (descriptor.getEvaluator() != null) { |
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// Nothing to do
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return;
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} |
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int fieldIndex = descriptor.getIndex(); // TODO check it's correct |
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String value = null; |
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try {
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value = this.dbfFile.getStringFieldValue(rowIndex, fieldIndex);
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} catch (DataException e) {
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throw new ReadException(this.store.getName(), e); |
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} |
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value = value.trim(); |
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int fieldType = descriptor.getDataType();
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switch (fieldType) {
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case DataTypes.STRING:
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featureData.set(fieldIndex, value); |
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break;
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case DataTypes.DOUBLE:
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try {
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featureData.set(fieldIndex, new Double(value)); |
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} catch (NumberFormatException e) { |
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featureData.set(fieldIndex, null);
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} |
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break;
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case DataTypes.INT:
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try {
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featureData.set(fieldIndex, new Integer(value)); |
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} catch (NumberFormatException e) { |
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featureData.set(fieldIndex, null);
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} |
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break;
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case DataTypes.FLOAT:
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try {
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featureData.set(fieldIndex, new Float(value)); |
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} catch (NumberFormatException e) { |
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featureData.set(fieldIndex, null);
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} |
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break;
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case DataTypes.LONG:
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try {
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featureData.set(fieldIndex, new Long(value)); |
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} catch (NumberFormatException e) { |
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featureData.set(fieldIndex, null);
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} |
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break;
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case DataTypes.BOOLEAN:
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featureData.set(fieldIndex, new Boolean(value)); |
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break;
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case DataTypes.BYTE:
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try {
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featureData.set(fieldIndex, new Byte(value)); |
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} catch (NumberFormatException e) { |
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featureData.set(fieldIndex, null);
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} |
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break;
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case DataTypes.DATE:
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String year = value.substring(0, 4); |
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String month = value.substring(4, 6); |
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String day = value.substring(6, 8); |
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DateFormat df;
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if (descriptor.getDateFormat() == null){ |
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df = DateFormat.getDateInstance(DateFormat.SHORT, |
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ukLocale); |
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} else{
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df = descriptor.getDateFormat(); |
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} |
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/*
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* Calendar c = Calendar.getInstance(); c.clear();
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* c.set(Integer.parseInt(year), Integer.parseInt(month),
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* Integer.parseInt(day)); c.set(Calendar.MILLISECOND, 0);
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*/
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String strAux = month + "/" + day + "/" + year; |
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Date dat = null; |
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try {
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dat = df.parse(strAux); |
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} catch (ParseException e) { |
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throw new ReadException(this.store.getName(), e); |
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} |
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featureData.set(fieldIndex, dat); |
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break;
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default:
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featureData.set(fieldIndex, descriptor.getDefaultValue()); |
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break;
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} |
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} |
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/***
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* NOT supported in Alter Mode
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*
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* @param index
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* @return
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* @throws ReadException
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*/
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protected FeatureData getFeatureDataByIndex(long index) throws DataException { |
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return this |
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.getFeatureDataByIndex(index, this.store
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.getDefaultFeatureType()); |
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} |
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protected int getFeatureCount() throws ReadException, OpenException, |
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ResourceNotifyChangesException {
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this.open();
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try {
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this.resource.begin();
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} catch (ResourceBeginException e) {
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throw new ReadException(this.getName(), e); |
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} |
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try {
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return this.dbfFile.getRecordCount(); |
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} finally {
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this.resource.end();
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} |
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} |
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public FeatureSetProvider createSet(FeatureQuery query)
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throws DataException {
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return new DBFSetProvider(this, query); |
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} |
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public boolean canCreate() { |
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return true; |
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} |
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public boolean canWriteGeometry(int geometryType) { |
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return false; |
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} |
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public void create(DataStoreParameters parameters, FeatureType featureType, |
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boolean overwrite) throws CreateException { |
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//TODO
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throw new NotYetImplemented(); |
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} |
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public void open() throws OpenException { |
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if (this.dbfFile.isOpen()) { |
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return;
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} |
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} |
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public void close() throws CloseException { |
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super.close();
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if (!this.dbfFile.isOpen()) { |
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return;
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} |
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//Cerrar recurso
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try {
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this.resource.begin();
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} catch (ResourceBeginException e) {
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throw new CloseException(this.getName(), e); |
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} |
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try {
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this.dbfFile.close();
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this.resource.notifyClose();
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} catch (ResourceNotifyCloseException e) {
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throw new CloseException(this.getName(), e); |
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} finally {
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this.resource.end();
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} |
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} |
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public void dispose() throws CloseException { |
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this.close();
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try {
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this.resource.notifyDispose();
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} catch (ResourceNotifyDisposeException e) {
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throw new CloseException(this.getName(), e); |
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} |
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dbfFile = null;
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this.resource.removeConsumer(this); |
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resource = null;
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metadata = null;
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super.dispose();
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} |
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public boolean closeResourceRequested(ResourceProvider resource) { |
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try {
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this.close();
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} catch (CloseException e) {
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return false; |
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} |
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return true; |
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} |
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public boolean allowWrite() { |
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File file;
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try {
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file = (File) this.resource.get(); |
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} catch (AccessResourceException e) {
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return false; |
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} |
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return super.allowWrite() && file.canWrite(); |
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} |
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public void refresh() throws OpenException { |
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try {
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this.close();
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} catch (CloseException e) {
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throw new OpenException(this.getName(), e); |
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} |
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this.open();
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try {
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this.initFeatureType();
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} catch (InitializeException e) {
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throw new OpenException(this.getName(), e); |
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} |
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} |
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} |