Revision 47320 trunk/org.gvsig.desktop/org.gvsig.desktop.library/org.gvsig.expressionevaluator/org.gvsig.expressionevaluator.lib/org.gvsig.expressionevaluator.lib.impl/src/main/java/org/gvsig/expressionevaluator/impl/function/typeconversion/CastFunction.java

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CastFunction.java
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package org.gvsig.expressionevaluator.impl.function.typeconversion;
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import java.util.Iterator;


  		




  
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import java.util.function.Function;


  		




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import org.apache.commons.lang3.Range;


  		




  
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import org.gvsig.expressionevaluator.Code;


  		




  
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import org.gvsig.expressionevaluator.Codes;


  		




  
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import org.gvsig.expressionevaluator.ExpressionBuilder;


  		




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import static org.gvsig.expressionevaluator.ExpressionBuilder.FUNCTION_CAST;


  		




  
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import static org.gvsig.expressionevaluator.ExpressionBuilder.FUNCTION_GETATTR;


  		




  
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import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;


  		




  
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import org.gvsig.expressionevaluator.ExpressionEvaluatorManager;


  		




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import org.gvsig.expressionevaluator.ExpressionRuntimeException;


  		




  
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import org.gvsig.expressionevaluator.Formatter;


  		




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import org.gvsig.expressionevaluator.Interpreter;


  		




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import org.gvsig.expressionevaluator.spi.AbstractFunction;


  		




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import org.gvsig.tools.ToolsLocator;


  		




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        return "The valid type names for the function CAST are:\n"+ builder.toString();


  		




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    }


  		




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    @Override


  		




  
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    public String toString(Codes args, Formatter<Code> formatter) {


  		




  
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        StringBuilder builder = new StringBuilder();


  		




  
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        Code expression = args.get(0);


  		




  
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        Code typeName = args.get(1);


  		




  
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        if( typeName instanceof Code.Constant && ((Code.Constant)typeName).value() instanceof CharSequence ) {


  		




  
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          builder.append(this.name());


  		




  
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          builder.append("(");


  		




  
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          builder.append(expression.toString(formatter));


  		




  
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          builder.append(" AS ");


  		




  
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          builder.append(((Code.Constant)typeName).value().toString());


  		




  
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          builder.append(")");


  		




  
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          return builder.toString();


  		




  
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        }


  		




  
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        return super.toString(args, formatter);


  		




  
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    }


  		




  
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}


  		












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