gvSIG data provider for Oracle

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package org.gvsig.oracle.dal.expressionbuilderformatter;

import java.text.MessageFormat;

import org.gvsig.expressionevaluator.ExpressionBuilder;

import org.gvsig.expressionevaluator.ExpressionBuilder.Constant;

import org.gvsig.expressionevaluator.Formatter;

import org.gvsig.expressionevaluator.GeometryExpressionBuilder;

import org.gvsig.fmap.dal.SQLBuilder;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.oracle.dal.OracleSQLBuilder;

/**

 *

 * @author osc

 */

public class OracleConstant implements Formatter<ExpressionBuilder.Value> {

    private final Formatter<ExpressionBuilder.Value> formatter;

    private final OracleSQLBuilder builder;

    private final GeometryExpressionBuilder expbuilder;

    public OracleConstant(SQLBuilder builder, Formatter<ExpressionBuilder.Value> formatter) {

        this.builder = (OracleSQLBuilder) builder;

        this.formatter = formatter;

        this.expbuilder = builder.expression();

    }

    @Override

    public boolean canApply(ExpressionBuilder.Value value) {

        return value instanceof ExpressionBuilder.Constant;

    }

    @Override

    public String format(ExpressionBuilder.Value function) {

        Object value = ((Constant) function).value();

        if( value instanceof Boolean ) {

            if( (Boolean)value ) {

                return "(1=1)";

            }

            return "(1<>1)";

        } else if (value instanceof Geometry) {

            Geometry geom = (Geometry) value; //function;

            try {

                switch (this.builder.geometry_support_type()) {

                    case EWKB:

                        return MessageFormat.format(OracleSQLBuilder.ST_GEOMFROMEWKB,

                                this.builder.blob(geom.convertToEWKB()),

                                String.valueOf(this.expbuilder.srs_id(geom.getProjection())) //TODO projection from ?

                        );

                    case WKB:

                        return MessageFormat.format(OracleSQLBuilder.ST_GEOMFROMWKB,

                                this.builder.blob(geom.convertToWKB()),

                                String.valueOf(this.expbuilder.srs_id(geom.getProjection()))

                        );

                    case WKT:

                    default:

                        return MessageFormat.format(OracleSQLBuilder.ST_GEOMFROMTEXT,

                                geom.convertToWKT(),

                                String.valueOf(this.expbuilder.srs_id(geom.getProjection()))

                        );

                }

            } catch (Exception ex) {

                throw new RuntimeException("Can't convert geometry to string.", ex);

            }

        }

        return function.toString(null);

    }

}