gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / dataTypes / DataTypeUtils.java @ 2197
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package org.gvsig.tools.dataTypes; |
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import java.math.BigDecimal; |
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import java.util.Date; |
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import java.util.Locale; |
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import org.gvsig.tools.ToolsLocator; |
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/**
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*
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* @author jjdelcerro
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*/
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public class DataTypeUtils { |
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private static CoercionContextLocale COERCE_CONTEXT_DEFAULT_LOCALE ; |
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private static CoercionContextDecimal COERCE_CONTEXT_DEFAULT_DECIMAL ; |
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protected DataTypeUtils() {
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} |
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public static CoercionContextLocale coerceContextLocale(Locale locale) { |
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return CoercionContextLocale.create(locale);
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} |
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public static CoercionContextLocale coerceContextDefaultLocale() { |
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if( COERCE_CONTEXT_DEFAULT_LOCALE==null || |
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Locale.getDefault()!=COERCE_CONTEXT_DEFAULT_LOCALE.locale() ) {
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COERCE_CONTEXT_DEFAULT_LOCALE = CoercionContextLocale.create(Locale.getDefault());
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} |
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return COERCE_CONTEXT_DEFAULT_LOCALE;
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} |
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public static CoercionContextDecimal coerceContextDefaultDecimal() { |
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if( COERCE_CONTEXT_DEFAULT_DECIMAL==null ) { |
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COERCE_CONTEXT_DEFAULT_DECIMAL = CoercionContextDecimal.create( |
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Locale.ENGLISH
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); |
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} |
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return COERCE_CONTEXT_DEFAULT_DECIMAL;
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} |
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public static CoercionContextDecimal coerceContextDecimal(Locale locale) { |
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if( COERCE_CONTEXT_DEFAULT_DECIMAL!=null || |
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locale==COERCE_CONTEXT_DEFAULT_DECIMAL.locale() ) {
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return COERCE_CONTEXT_DEFAULT_DECIMAL;
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} |
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return CoercionContextDecimal.create(locale);
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} |
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public static CoercionContextDecimal coerceContextDecimal(Locale locale, int precision, int scale, int roundMode) { |
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return CoercionContextDecimal.create(locale,precision, scale, roundMode);
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} |
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public static Coercion getCoercion(int type) { |
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DataTypesManager manager = ToolsLocator.getDataTypesManager(); |
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DataType dataType = manager.get(type); |
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Coercion c = dataType.getCoercion(); |
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return c;
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} |
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public static Object coerce(int type, Object value, Object defaultValue) { |
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Coercion coercer = getCoercion(type); |
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try {
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Object x = coercer.coerce(value);
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if( x == null ) { |
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return defaultValue;
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} |
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return x;
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} catch (CoercionException ex) {
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return defaultValue;
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} |
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} |
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public static Object coerce(int type, Object value) throws CoercionException { |
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Coercion c = getCoercion(type); |
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Object x = c.coerce(value);
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return x;
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} |
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public static int toInteger(Object value, int defaultValue) { |
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return (int) coerce(DataTypes.INT, value, defaultValue); |
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} |
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public static short toShort(Object value, short defaultValue) { |
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try {
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return (short) coerce(DataTypes.INT, value, defaultValue); |
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} catch(Throwable th) { |
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return defaultValue;
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} |
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} |
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public static int toByte(Object value, byte defaultValue) { |
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return (int) coerce(DataTypes.BYTE, value, defaultValue); |
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} |
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public static long toLong(Object value, long defaultValue) { |
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return (long) coerce(DataTypes.LONG, value, defaultValue); |
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} |
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public static boolean toBoolean(Object value, boolean defaultValue) { |
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return (boolean) coerce(DataTypes.BOOLEAN, value, defaultValue); |
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} |
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public static float toFloat(Object value, float defaultValue) { |
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return (float) coerce(DataTypes.FLOAT, value, defaultValue); |
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} |
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public static double toDouble(Object value, double defaultValue) { |
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return (double) coerce(DataTypes.DOUBLE, value, defaultValue); |
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} |
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public static String toString(Object value, String defaultValue) { |
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return (String) coerce(DataTypes.STRING, value, defaultValue); |
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} |
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public static Date toDate(Object value, Date defaultValue) { |
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return (Date) coerce(DataTypes.DATE, value, defaultValue); |
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} |
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public static Date toTime(Object value, Date defaultValue) { |
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return (Date) coerce(DataTypes.TIME, value, defaultValue); |
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} |
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public static Date toTimestamp(Object value, Date defaultValue) { |
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return (Date) coerce(DataTypes.TIMESTAMP, value, defaultValue); |
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} |
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public static String toString(Object value) { |
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return (String) coerce(DataTypes.STRING, value, null); |
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} |
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public static Date toDate(Object value) { |
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return (Date) coerce(DataTypes.DATE, value, null); |
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} |
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public static Date toTime(Object value) { |
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return (Date) coerce(DataTypes.TIME, value, null); |
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} |
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public static Date toTimestamp(Object value) { |
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return (Date) coerce(DataTypes.TIMESTAMP, value, null); |
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} |
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public static float toFloat(Object value) { |
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return (float) coerce(DataTypes.FLOAT, value, Float.NaN); |
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} |
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public static double toDouble(Object value) { |
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return (double) coerce(DataTypes.DOUBLE, value, Double.NaN); |
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} |
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public static int toInteger(Object value) { |
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return (int) coerce(DataTypes.INT, value, -1); |
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} |
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public static int toByte(Object value) { |
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return (int) coerce(DataTypes.BYTE, value, -1); |
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} |
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public static short toShort(Object value) { |
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try {
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return (short) coerce(DataTypes.INT, value, -1); |
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} catch(Throwable th) { |
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return -1; |
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} |
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} |
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public static long toLong(Object value) { |
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return (long) coerce(DataTypes.LONG, value, -1); |
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} |
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public static boolean toBoolean(Object value) { |
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return (boolean) coerce(DataTypes.BOOLEAN, value, false); |
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} |
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public static BigDecimal toBigDecimal(Object value, int precision, int scale, BigDecimal defaultValue) { |
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CoercionContextDecimal context = CoercionContextDecimal.create(precision, scale); |
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Coercion c = getCoercion(DataTypes.DECIMAL); |
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try {
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BigDecimal x = (BigDecimal) c.coerce(value,context); |
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if( x == null ) { |
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return defaultValue;
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} |
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return x;
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} catch (CoercionException ex) {
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return defaultValue;
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} |
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} |
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public static BigDecimal toBigDecimal(Object value, int precision, int scale) { |
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return toBigDecimal(value, precision, scale, null); |
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} |
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} |