Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.function.operator;

import org.apache.commons.lang3.ObjectUtils;

import org.apache.commons.math.util.MathUtils;

import org.gvsig.expressionevaluator.Function;

import org.gvsig.expressionevaluator.Interpreter;

public class NeOperator extends AbstractBinaryOperator {

    public NeOperator() {

        super(Function.GROUP_BOOLEAN,"<>");

        this.addAlias("!=");

    }

    @Override

    public Object call(Interpreter interpreter, Object op1, Object op2) {       

        Double accuracy = interpreter.getAccuracy();

        if( accuracy!=null ) {

            if( op1!=null && op2!= null && (

                op1 instanceof Double || op2 instanceof Double ||

                op1 instanceof Float || op2 instanceof Float) ) {

                boolean value = MathUtils.compareTo(((Number)op1).doubleValue(), ((Number)op2).doubleValue(), accuracy) != 0;

                return value;

            }

        }

        if( op2 instanceof Comparable && op2 instanceof Comparable ) {

            boolean value = ObjectUtils.compare((Comparable)op1,(Comparable)op2) != 0;

            return value;

        }

        throw new IllegalArgumentException("Types not allowed in '"+name()+"' operand.");

    }

}