Application: gvSIG desktop

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

import org.apache.commons.lang3.Range;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

public class AbsFunction extends AbstractFunction {

    public AbsFunction() {

        super("Numeric", "ABS",Range.is(1));

    }

    @Override

    public Object call(Interpreter interpreter, Object[] args) {

        Object op1 = args[0];

        if( op1 instanceof Double ) {

            double value = Math.abs(((Number) op1).doubleValue());

            return value;

        }

        if( op1 instanceof Float ) {

            float value = Math.abs(((Number) op1).floatValue());

            return value;

        }

        if( op1 instanceof Long ) {

            long value = Math.abs(((Number) op1).longValue());

            return value;

        }

        if( op1 instanceof Integer ) {

            int value = Math.abs(((Number) op1).intValue());

            return value;

        }

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

    }

}