Application: gvSIG desktop

package org.gvsig.fmap.dal.impl.dataprofile;

import org.gvsig.expressionevaluator.ExpressionBuilder;

import org.gvsig.expressionevaluator.ExpressionUtils;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

import static org.gvsig.fmap.dal.DataManager.DAL_FOREING_CODE;

import static org.gvsig.fmap.dal.DataManager.DAL_FOREING_TABLE;

import org.gvsig.fmap.dal.feature.AbstractDataProfile;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.tools.dynobject.Tags;

/**

 *

 * @author jjdelcerro

 */

@SuppressWarnings("UseSpecificCatch")

public class ForeingKey extends AbstractDataProfile {

    public ForeingKey() {

        super(DataManager.DAL_FOREING_KEY, "Foreing key", Feature.class);

    }

    @Override

    public Object createData(Object data, Tags tags) {

        if( data == null ) {

            return null;

        }

        try {

            String foreingTableName = tags.getString(DAL_FOREING_TABLE,null);

            String foreingCodeName = tags.getString(DAL_FOREING_CODE, null);

            DataManager dataManager = DALLocator.getDataManager();

            FeatureStore store = (FeatureStore) dataManager.getStoresRepository().get(foreingTableName);

            if( store == null ) {

                return null;

            }

            ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder();

            FeatureQuery query = store.createFeatureQuery();

            Feature feature = store.findFirst(

                    builder.eq(

                            builder.variable(foreingCodeName),

                            builder.constant(data)

                    ).toString()

            );

            return feature;

        } catch (Exception ex) {

            return null;

        }

    }

    public static void selfRegister() {

        DataManager dataManager = DALLocator.getDataManager();

        dataManager.registerDataProfile(new ForeingKey());

    }

}