Application: gvSIG desktop

/*

 * Created on 12-oct-2004

 */

package com.hardcode.gdbms.engine.instruction;

import java.util.ArrayList;

import com.hardcode.driverManager.DriverLoadException;

import com.hardcode.gdbms.engine.data.DataSource;

import com.hardcode.gdbms.engine.data.DataSourceFactory;

import com.hardcode.gdbms.engine.data.NoSuchTableException;

/**

 * Adaptador

 *

 * @author Fernando Gonz?lez Cort?s

 */

public class TableListAdapter extends Adapter {

    private DataSource[] tables;

    /**

     * Obtiene los DataSources de la cl?usula from

     *

     * @return array de datasources

     *

     * @throws TableNotFoundException Si no se encontr? alguna tabla

     * @throws RuntimeException

     */

    public DataSource[] getTables() throws TableNotFoundException {

        if (tables == null) {

            Adapter[] hijos = getChilds();

            ArrayList ret = new ArrayList();

            try {

                for (int i = 0; i < hijos.length; i++) {

                    TableRefAdapter tRef = (TableRefAdapter) hijos[i];

                    if (tRef.getAlias() == null) {

                        ret.add(DataSourceFactory.createRandomDataSource(

                                tRef.getName()));

                    } else {

                        ret.add(DataSourceFactory.createRandomDataSource(

                                tRef.getName(), tRef.getAlias()));

                    }

                }

                tables = (DataSource[]) ret.toArray(new DataSource[0]);

            } catch (NoSuchTableException e) {

                throw new TableNotFoundException();

            } catch (DriverLoadException e) {

                throw new RuntimeException(e);

                        }

        }

        return tables;

    }

}