Application: gvSIG desktop

package org.gvsig.expressionevaluator.spi.formatter.value;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.expressionevaluator.ExpressionBuilder;

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

import org.gvsig.expressionevaluator.ExpressionBuilder.Function;

import org.gvsig.expressionevaluator.ExpressionBuilder.Value;

import org.gvsig.expressionevaluator.Formatter;

/**

 *

 * @author jjdelcerro

 */

public class Getattr implements Formatter<Value> {

    private final Formatter<Value> formatter;

    public Getattr(Formatter<Value> formatter) {

        this.formatter = formatter;

    }

    @Override

    public boolean canApply(ExpressionBuilder.Value value) {

        if (value instanceof ExpressionBuilder.Function) {

            return StringUtils.equalsIgnoreCase(FUNCTION_GETATTR, ((Function) value).name());

        }

        return false;

    }

    @Override

    public String format(Value function0) {

        Function function = (Function) function0;

        Value obj = function.parameters().get(0);

        Value attr = function.parameters().get(1); 

        return obj.toString(formatter)+"."+ attr.toString(formatter);

    }

}