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 / feature / impl / DataTypeDetectorImpl.java @ 47667
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package org.gvsig.fmap.dal.feature.impl; |
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import org.gvsig.fmap.dal.feature.DataTypeDetector; |
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import java.math.BigDecimal; |
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import java.net.URL; |
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import java.sql.Date; |
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import java.sql.Time; |
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import java.sql.Timestamp; |
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import java.text.DateFormat; |
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import java.text.DecimalFormat; |
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import java.text.NumberFormat; |
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import java.text.ParseException; |
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import java.text.ParsePosition; |
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import java.text.SimpleDateFormat; |
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import java.util.Locale; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.fmap.dal.DataTypes; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.GeometryCoercionContext; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.GeometryManager; |
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import org.gvsig.fmap.geom.GeometryUtils; |
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import org.gvsig.fmap.geom.type.GeometryType; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dataTypes.DataTypesManager; |
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import org.gvsig.tools.dataTypes.Coercion; |
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import org.gvsig.tools.dataTypes.CoercionContext; |
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import org.gvsig.tools.dataTypes.CoercionContextLocale; |
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/**
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*
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* @author jjdelcerro
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*/
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@SuppressWarnings("UseSpecificCatch") |
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public class DataTypeDetectorImpl implements DataTypeDetector { |
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private Locale locale; |
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private static class DataTypeDetectedImpl implements DataTypeDetected { |
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private int type; |
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private int displaySize; |
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private int integerDigits; |
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private int decimalDigits; |
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private boolean blank; |
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private GeometryType geomtype;
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@Override
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public int getType() { |
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return this.type; |
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} |
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@Override
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public int getDisplaySize() { |
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return this.displaySize; |
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} |
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@Override
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public int getPrecision() { |
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return this.decimalDigits + this.integerDigits; |
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} |
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@Override
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public int getScale() { |
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return this.decimalDigits; |
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} |
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@Override
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public boolean isBlank() { |
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return this.blank; |
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} |
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@Override
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public GeometryType getGeometryType() {
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return this.geomtype; |
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} |
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@Override
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public void setDisplaySize(int size) { |
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this.displaySize = size;
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} |
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} |
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private static class PossibleDataType { |
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public boolean possibleInt = true; |
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public boolean possibleFloat = true; |
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public boolean possibleDouble = true; |
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public boolean possibleDecimal = true; |
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public boolean possibleLong = true; |
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public boolean possibleURL = true; |
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public boolean possibleDate = true; |
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public boolean possibleTime = true; |
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public boolean possibleTimestamp = true; |
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public boolean possibleGeometry = true; |
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private int possibleGeometrySubtype; |
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private int possibleGeometryType; |
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} |
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private PossibleDataType possibleDataType;
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private DataTypeDetectedImpl detectedDataType;
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// private Coercion toDecimal;
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// private Coercion toDouble;
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// private Coercion toFloat;
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// private Coercion toDate;
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// private Coercion toTime;
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// private Coercion toTimestamp;
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// private Coercion toInt;
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// private Coercion toLong;
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private Coercion toGeom;
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private CoercionContext coercionContext;
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private GeometryCoercionContext geometryCoercionContext;
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public DataTypeDetectorImpl(Locale locale) { |
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init(locale); |
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} |
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private void init(Locale locale) { |
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if (locale == null) { |
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locale = Locale.getDefault();
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} |
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DataTypesManager typeManager = ToolsLocator.getDataTypesManager(); |
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coercionContext = CoercionContextLocale.create(locale); |
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// toDecimal = typeManager.getCoercion(DataTypes.DECIMAL);
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// toDouble = typeManager.getCoercion(DataTypes.DOUBLE);
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// toFloat = typeManager.getCoercion(DataTypes.FLOAT);
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// toDate = typeManager.getCoercion(DataTypes.DATE);
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// toTime = typeManager.getCoercion(DataTypes.TIME);
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// toTimestamp = typeManager.getCoercion(DataTypes.TIMESTAMP);
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// toInt = typeManager.getCoercion(DataTypes.INT);
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// toLong = typeManager.getCoercion(DataTypes.LONG);
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toGeom = typeManager.getCoercion(DataTypes.GEOMETRY); |
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geometryCoercionContext = GeometryLocator.getGeometryManager().createGeometryCoercionContext(); |
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geometryCoercionContext.setMode(GeometryCoercionContext.MODE_ONERROR_THROW); |
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detectedDataType = new DataTypeDetectedImpl();
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possibleDataType = new PossibleDataType();
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possibleDataType.possibleGeometryType = Geometry.TYPES.UNKNOWN; |
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possibleDataType.possibleGeometrySubtype = Geometry.SUBTYPES.UNKNOWN; |
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this.locale = locale;
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} |
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@SuppressWarnings("ResultOfObjectAllocationIgnored") |
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@Override
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public void addValue(String rawvalue) { |
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if( rawvalue == null ) { |
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return;
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} |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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if( detectedDataType.blank ) {
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detectedDataType.blank = StringUtils.isBlank(rawvalue); |
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} |
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int displaySize = rawvalue.length();
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if( displaySize>detectedDataType.displaySize ) {
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detectedDataType.displaySize = displaySize; |
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} |
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if( StringUtils.isNotBlank(rawvalue) ) {
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if (possibleDataType.possibleDecimal) {
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try {
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BigDecimal decimal = this.toDecimal(rawvalue); |
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if( decimal==null ) { |
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possibleDataType.possibleDecimal = false;
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} else {
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if( decimal.scale() > detectedDataType.decimalDigits ) {
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detectedDataType.decimalDigits = decimal.scale(); |
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} |
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int integerDigits = decimal.precision() - decimal.scale();
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if( integerDigits>detectedDataType.integerDigits ) {
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detectedDataType.integerDigits = integerDigits; |
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} |
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} |
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} catch (Exception ex) { |
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possibleDataType.possibleDecimal = false;
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} |
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} |
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if (possibleDataType.possibleDouble) {
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try {
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Double num = toDouble(rawvalue);
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possibleDataType.possibleDouble = (num!=null);
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} catch (Exception ex) { |
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possibleDataType.possibleDouble = false;
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} |
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} |
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if (possibleDataType.possibleFloat) {
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try {
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Float num = toFloat(rawvalue);
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possibleDataType.possibleFloat = (num!=null);
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} catch (Exception ex) { |
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possibleDataType.possibleFloat = false;
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} |
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} |
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if (possibleDataType.possibleLong) {
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possibleDataType.possibleLong = isValidLong(rawvalue); |
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} |
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if (possibleDataType.possibleInt) {
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possibleDataType.possibleInt = isValidInteger(rawvalue); |
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} |
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if (possibleDataType.possibleDate) {
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try {
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possibleDataType.possibleDate = (toDate(rawvalue) != null);
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} catch (Exception ex) { |
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possibleDataType.possibleDate = false;
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} |
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} |
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if (possibleDataType.possibleTime) {
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try {
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possibleDataType.possibleTime = (toTime(rawvalue) != null);
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} catch (Exception ex) { |
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possibleDataType.possibleTime = false;
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} |
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} |
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if (possibleDataType.possibleTimestamp) {
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try {
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possibleDataType.possibleTimestamp = (toTimestamp(rawvalue) != null);
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} catch (Exception ex) { |
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possibleDataType.possibleTimestamp = false;
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} |
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} |
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if (possibleDataType.possibleURL) {
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try {
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new URL((String) rawvalue); |
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possibleDataType.possibleURL = true;
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} catch (Exception ex) { |
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possibleDataType.possibleURL = false;
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} |
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} |
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if (possibleDataType.possibleGeometry) {
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try {
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Geometry geom = (Geometry) toGeom.coerce((String) rawvalue, geometryCoercionContext);
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if( geom==null ) { |
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possibleDataType.possibleGeometry = true;
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} else {
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possibleDataType.possibleGeometry = true;
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if( possibleDataType.possibleGeometryType == Geometry.TYPES.UNKNOWN ) {
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possibleDataType.possibleGeometryType = geom.getGeometryType().getType(); |
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} else if( possibleDataType.possibleGeometryType != geom.getGeometryType().getType() ) { |
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// FIXME: habria que calcualar correctamente el geom-type, en funcion del actual y el ultimo.
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possibleDataType.possibleGeometryType = Geometry.TYPES.GEOMETRY; |
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} |
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if( possibleDataType.possibleGeometrySubtype == Geometry.SUBTYPES.UNKNOWN ) {
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possibleDataType.possibleGeometrySubtype = geom.getGeometryType().getSubType(); |
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} else if( possibleDataType.possibleGeometrySubtype != geom.getGeometryType().getSubType()) { |
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// FIXME: habria que calcualar correctamente el geom-type, en funcion del actual y el ultimo.
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// possibleDataType.possibleGeometrySubtype = Geometry.SUBTYPES.GEOM3DM;
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possibleDataType.possibleGeometrySubtype = Geometry.SUBTYPES.GEOM3D; // H2 no soporta M
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} |
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} |
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} catch (Exception ex) { |
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possibleDataType.possibleGeometry = false;
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} |
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} |
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} |
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if (possibleDataType.possibleInt) {
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this.detectedDataType.type = DataTypes.INT;
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} else if (possibleDataType.possibleLong) { |
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this.detectedDataType.type = DataTypes.LONG;
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} else if (possibleDataType.possibleDecimal) { |
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// Preferimos un Decimal que un Float/Double
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this.detectedDataType.type = DataTypes.DECIMAL;
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} else if (possibleDataType.possibleFloat) { |
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// Forzamos los float a double para evitar perder precision
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this.detectedDataType.type = DataTypes.DOUBLE;
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} else if (possibleDataType.possibleDouble) { |
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this.detectedDataType.type = DataTypes.DOUBLE;
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} else if (possibleDataType.possibleURL) { |
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this.detectedDataType.type = DataTypes.URL;
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} else if (possibleDataType.possibleDate) { |
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this.detectedDataType.type = DataTypes.DATE;
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} else if (possibleDataType.possibleTime) { |
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this.detectedDataType.type = DataTypes.TIME;
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} else if (possibleDataType.possibleTimestamp) { |
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this.detectedDataType.type = DataTypes.TIMESTAMP;
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} else if (possibleDataType.possibleGeometry) { |
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this.detectedDataType.type = DataTypes.GEOMETRY;
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this.detectedDataType.geomtype = GeometryUtils.getGeometryType(
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this.possibleDataType.possibleGeometryType,
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this.possibleDataType.possibleGeometrySubtype
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); |
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} else { //if( this.detectedDataType.type == 0 ) { |
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this.detectedDataType.type = DataTypes.STRING;
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this.detectedDataType.displaySize = Math.max(10,this.detectedDataType.displaySize); |
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} |
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} |
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@Override
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public DataTypeDetected getDataType() {
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return this.detectedDataType; |
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} |
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private boolean isValidLong(String s) { |
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if (s == null) { |
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return true; |
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} |
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s = s.trim().toLowerCase(); |
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if (s.isEmpty()) {
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return true; |
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} |
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try {
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if (s.startsWith("0x")) { |
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Long.valueOf(s.substring(2), 16); |
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} else {
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Long.valueOf(s);
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} |
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return true; |
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} catch (Exception ex) { |
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return false; |
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} |
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} |
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private boolean isValidInteger(String s) { |
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if (s == null) { |
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return true; |
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} |
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s = s.trim().toLowerCase(); |
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if (s.isEmpty()) {
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return true; |
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} |
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try {
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if (s.startsWith("0x")) { |
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Integer.valueOf(s.substring(2), 16); |
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} else {
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Integer.valueOf(s);
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} |
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return true; |
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} catch (Exception ex) { |
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return false; |
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} |
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} |
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private BigDecimal toDecimal(String s) { |
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try {
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if (s.startsWith("+")) { |
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s = s.substring(1);
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} |
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ParsePosition p = new ParsePosition(0); |
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DecimalFormat nf = (DecimalFormat) NumberFormat.getInstance(this.locale); |
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nf.setParseBigDecimal(true);
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BigDecimal num = (BigDecimal) nf.parse(s, p); |
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if (p.getErrorIndex() > 0 || p.getIndex() < s.length()) { |
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return null; |
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} |
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return num;
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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private Double toDouble(String s) { |
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try {
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if (s.startsWith("+")) { |
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s = s.substring(1);
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} |
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ParsePosition p = new ParsePosition(0); |
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DecimalFormat nf = (DecimalFormat) NumberFormat.getInstance(this.locale); |
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Number n = nf.parse(s, p);
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if (p.getErrorIndex() > 0 || p.getIndex() < s.length()) { |
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return null; |
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} |
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double num = n.doubleValue();
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return num;
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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private Float toFloat(String s) { |
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try {
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if (s.startsWith("+")) { |
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s = s.substring(1);
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} |
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ParsePosition p = new ParsePosition(0); |
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DecimalFormat nf = (DecimalFormat) NumberFormat.getInstance(this.locale); |
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Number n = nf.parse(s, p);
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if (p.getErrorIndex() > 0 || p.getIndex() < s.length()) { |
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return null; |
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} |
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double num = n.doubleValue();
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if( num > Float.MAX_VALUE || num<Float.MIN_VALUE ) { |
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return null; |
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} |
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return (float)num; |
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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private Date toDate(String s) { |
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DateFormat[] formatters = new DateFormat[]{ |
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DateFormat.getDateInstance(DateFormat.SHORT, locale), |
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DateFormat.getDateInstance(DateFormat.MEDIUM, locale), |
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DateFormat.getDateInstance(DateFormat.LONG, locale), |
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new SimpleDateFormat("yyyy-MM-dd") // PostgreSQL format |
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}; |
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for (DateFormat formatter : formatters) { |
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formatter.setLenient(false);
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try {
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java.util.Date d = formatter.parse(s); |
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if (d != null) { |
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return new Date(d.getTime()); |
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} |
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} catch (ParseException e) { |
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// Continue
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} |
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} |
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return null; |
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} |
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private Time toTime(String s) { |
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DateFormat[] formatters = new DateFormat[]{ |
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DateFormat.getTimeInstance(DateFormat.MEDIUM, locale), |
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DateFormat.getTimeInstance(DateFormat.SHORT, locale), |
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DateFormat.getTimeInstance(DateFormat.LONG, locale), |
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new SimpleDateFormat("HH:mm:ss"), |
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new SimpleDateFormat("HH:mm"), |
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}; |
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for (DateFormat formatter : formatters) { |
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formatter.setLenient(false);
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try {
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java.util.Date d = formatter.parse(s); |
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if (d != null) { |
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return new Time(d.getTime()); |
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} |
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} catch (ParseException e) { |
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// Continue
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} |
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} |
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return null; |
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} |
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|
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private Timestamp toTimestamp(String s) { |
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DateFormat[] formatters = new DateFormat[]{ |
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DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM, locale), |
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DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT, locale), |
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DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG, locale), |
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DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM, locale), |
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DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, locale), |
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DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.LONG, locale), |
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DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.MEDIUM, locale), |
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DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.SHORT, locale), |
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DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale), |
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new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"), // PostgreSQL timestamp format |
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new SimpleDateFormat("yyyy-MM-dd HH:mm") |
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}; |
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for (DateFormat formatter : formatters) { |
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formatter.setLenient(false);
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try {
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java.util.Date d = formatter.parse(s); |
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if (d != null) { |
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return new Timestamp(d.getTime()); |
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} |
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} catch (ParseException e) { |
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// Continue
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} |
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} |
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try {
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return Timestamp.valueOf(s); |
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} catch (Exception ex){ |
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} |
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return null; |
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} |
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} |