Application: gvSIG desktop » gvSIG data provider for MS SQLServer

package org.gvsig.mssqlserver.dal.expressionbuilderformatter;

import java.text.MessageFormat;

import java.util.List;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.expressionevaluator.ExpressionBuilder;

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

import org.gvsig.expressionevaluator.ExpressionBuilder.Function;

import org.gvsig.expressionevaluator.ExpressionBuilder.Value;

import org.gvsig.expressionevaluator.Formatter;

import org.gvsig.fmap.dal.SQLBuilder;

/**

 *

 * @author jjdelcerro

 */

class ST_UnionAggregate implements Formatter<Value> {

    private final Formatter<Value> formatter;

    private final SQLBuilder builder;

    public ST_UnionAggregate(SQLBuilder builder, Formatter<Value> formatter) {

        this.builder = builder;

        this.formatter = formatter;

    }

    @Override

    public boolean canApply(Value value) {

        if (value instanceof Function) {

            return StringUtils.equalsIgnoreCase(ExpressionBuilder.FUNCTION_ST_UNIONAGGREGATE, ((Function) value).name());

        }

        return false;

    }

    @Override

    public String format(Value function) {

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

        String p1 = parameters.get(0).toString(formatter);

        String r = MessageFormat.format("geometry::UnionAggregate({0})", p1);

        return r;

    }

}