Revision 2080 org.gvsig.tools/library/trunk/org.gvsig.tools/org.gvsig.tools.lib/src/main/java/org/gvsig/tools/dataTypes/impl/coercion/CoerceToDouble.java
| CoerceToDouble.java | ||
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*/ |
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package org.gvsig.tools.dataTypes.impl.coercion; |
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import java.text.DecimalFormat; |
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import java.text.NumberFormat; |
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import java.text.ParsePosition; |
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import java.util.Date; |
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import java.util.Locale; |
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import org.apache.commons.lang3.ArrayUtils; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.tools.dataTypes.AbstractCoercion; |
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import org.gvsig.tools.dataTypes.CoercionException; |
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import org.gvsig.tools.dataTypes.DataTypesManager.CoercionWithLocale; |
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import org.gvsig.tools.dataTypes.DataTypeUtils; |
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import org.gvsig.tools.dataTypes.CoercionContext; |
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import org.gvsig.tools.dataTypes.CoercionContextLocale; |
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public class CoerceToDouble implements CoercionWithLocale {
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@SuppressWarnings("UseSpecificCatch")
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public class CoerceToDouble extends AbstractCoercion {
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public Object coerce(Object value) throws CoercionException {
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if (value == null) {
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return null; |
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} |
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try {
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if (!(value instanceof Double)) {
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if (value instanceof Number) {
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value = ((Number) value).doubleValue(); |
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} else if( value instanceof Boolean ) {
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return (double)((boolean)value ? 1:0); |
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} else if (value instanceof Date) {
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value = (double)(((Date)value).getTime()); |
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} else {
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String s = value.toString(); |
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if (s == null) {
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return null; |
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} |
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s = s.trim().toLowerCase(); |
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if (s.length() == 0) {
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return null; |
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} |
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if (s.startsWith("0x")) {
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value = new Double(Long.parseLong(s.substring(2), 16)); |
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} else {
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value = Double.valueOf(s); |
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} |
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} |
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} |
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return value; |
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} catch (Exception e) {
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throw new CoercionException(e); |
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} |
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@Override |
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public Object coerce(Object value) throws CoercionException {
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if (value == null || value instanceof Double) {
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return value; |
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} |
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return coerce(value, DataTypeUtils.coerceContextDefaultLocale()); |
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} |
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public Object coerce(Object value, Locale locale) throws CoercionException {
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if (value == null) {
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return null; |
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@Override |
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public Object coerce(Object value, CoercionContext context) throws CoercionException {
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if (value == null || value instanceof Double) {
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return value; |
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} |
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CoercionContextLocale theContext; |
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if (context instanceof CoercionContextLocale) {
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theContext = (CoercionContextLocale) context; |
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} else {
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theContext = DataTypeUtils.coerceContextDefaultLocale(); |
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} |
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Double num; |
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try {
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if (value instanceof Number) {
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num = ((Number) value).doubleValue(); |
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} else if (value instanceof Boolean) {
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num = ((boolean) value ? 1d : 0d); |
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} else if (value instanceof Date) {
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num = (double) (((Date) value).getTime()); |
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} else {
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String s = value.toString(); |
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if (s == null) {
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return null; |
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} |
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try {
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if (!(value instanceof Double)) {
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if (value instanceof Number) {
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value = ((Number) value).doubleValue(); |
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} else if( value instanceof Boolean ) {
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return (double)((boolean)value ? 1:0); |
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} else if (value instanceof Date) {
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value = (double)(((Date)value).getTime()); |
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} else {
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String s = value.toString().trim().toLowerCase(); |
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if( StringUtils.isBlank(s) ) {
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return null; |
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} |
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if (s.startsWith("0x")) {
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value = new Double(Long.parseLong(s.substring(2), 16)); |
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} else {
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if( locale == null ) {
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locale = Locale.getDefault(); |
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} |
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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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NumberFormat nf = NumberFormat.getInstance(locale); |
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Number num = nf.parse(s, p); |
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if (p.getErrorIndex() > 0 || p.getIndex() < s.length()) {
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throw new CoercionException("Can't coerce '"+s+"' to double with locale " + (locale==null?"null":locale.getLanguage()) + "(error index "+p.getErrorIndex()+", index "+p.getIndex()+").");
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} |
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value = new Double(num.doubleValue()); |
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} |
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} |
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} |
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return value; |
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} catch (CoercionException e) {
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throw e; |
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} catch (Exception e) {
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throw new CoercionException("Can't coerce '"+(value==null?"null":value.toString())+"' to double with locale " + (locale==null?"null":locale.getLanguage())+"'.",e);
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s = s.trim().toLowerCase(); |
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if (s.length() == 0) {
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return null; |
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} |
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if (s.startsWith("0x")) {
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num = (double) Long.parseLong(s.substring(2), 16); |
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} else {
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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(theContext.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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throw new CoercionException("Can't coerce '" + s + "' to double with locale " + theContext.locale().getLanguage() + "(error index " + p.getErrorIndex() + ", index " + p.getIndex() + ").");
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} |
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num = n.doubleValue(); |
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} |
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} |
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return num; |
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} catch (CoercionException e) {
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throw e; |
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} catch (Exception e) {
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throw new CoercionException("Can't coerce '" + value.toString() + "' to double with locale " + theContext.locale().getLanguage() + "'.", e);
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} |
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} |
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} |
Also available in: Unified diff