Revision 2092 org.gvsig.tools/library/trunk/org.gvsig.tools/org.gvsig.tools.lib/src/main/java/org/gvsig/tools/dataTypes/impl/coercion/CoerceToLong.java

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CoerceToLong.java
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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 org.gvsig.tools.dataTypes.AbstractCoercion;


  		




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import org.gvsig.tools.dataTypes.CoercionException;


  		




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import org.gvsig.tools.dataTypes.CoercionContext;


  		




  
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import org.gvsig.tools.dataTypes.CoercionContextLocale;


  		




  
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import org.gvsig.tools.dataTypes.DataTypeUtils;


  		




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@SuppressWarnings("UseSpecificCatch")


  		




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public class CoerceToLong extends AbstractCoercion {


  		




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    if (value == null || value instanceof Long) {


  		




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      return value;


  		




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    }


  		




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    Long num;


  		




  
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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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    Number num;


  		




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    try {


  		




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      if (value instanceof Number) {


  		




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        num = ((Number) value).longValue();


  		




  
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        num = (Number) value;


  		




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      } else if (value instanceof Boolean) {


  		




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        num = ((boolean) value ? 1l : 0l);


  		




  ......




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          if (s.startsWith("+")) {


  		




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            s = s.substring(1);


  		




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          }


  		




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          num = Long.valueOf(s);


  		




  
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          ParsePosition p = new ParsePosition(0);


  		




  
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          DecimalFormat nf = (DecimalFormat) NumberFormat.getInstance(theContext.locale());


  		




  
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          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 long with locale " + theContext.locale().getLanguage() + "(error index " + p.getErrorIndex() + ", index " + p.getIndex() + ").");


  		




  
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          }


  		




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        }


  		




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      }


  		




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      return num;


  		




  
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      return num.longValue();


  		




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    } catch (Exception e) {


  		




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      throw new CoercionException("Can't coerce '" + value.toString() + "' to long.", e);


  		




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    }


  		












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