Application: gvSIG desktop

package org.gvsig.sqlite.dal.expressionbuilderformatter;

import java.text.MessageFormat;

import java.util.List;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.expressionevaluator.ExpressionBuilder;

import org.gvsig.expressionevaluator.ExpressionBuilder.Function;

import org.gvsig.expressionevaluator.ExpressionBuilder.Value;

import org.gvsig.expressionevaluator.Formatter;

import static org.gvsig.expressionevaluator.GeometryExpressionBuilderHelper.FUNCTION_ST_COVEREDBY;

import org.gvsig.fmap.dal.SQLBuilder;

import static org.gvsig.sqlite.dal.expressionbuilderformatter.ST_Intersects.getBBoxIntersectsFilter;

/**

 *

 * @author jjdelcerro

 */

public class ST_CoveredBy implements Formatter<Value> {

    private final SQLBuilder sqlbuilder;

    private final Formatter<Value> formatter;

    public ST_CoveredBy(SQLBuilder sqlbuilder, Formatter<Value> formatter) {

        this.sqlbuilder = sqlbuilder;

        this.formatter = formatter;

    }

    @Override

    public boolean canApply(ExpressionBuilder.Value value) {

        if (value instanceof ExpressionBuilder.Function) {

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

        }

        return false;

    }

    @Override

    public String format(Value function) {

        List<Value> parameters = ((Function) function).parameters();

        Value p1 = parameters.get(0);

        Value p2 = parameters.get(1);

        String p1s = p1.toString(formatter);

        String p2s = p2.toString(formatter);

        String filter = getBBoxIntersectsFilter(formatter, p1, p2);

        if (filter == null ) {         

            filter = getBBoxIntersectsFilter(formatter, p2, p1);

        }

        String r;

        if( filter == null ) {

            r = MessageFormat.format("ST_Covers(({1}),({0}))", p1s, p2s);

        } else {

            r = MessageFormat.format("( ({2}) AND ST_Covers(({1}),({0}) ))", p1s, p2s, filter);

        }

        return r;

    }

}