Package org.apache.jena.jdbc.tdb.results

Source Code of org.apache.jena.jdbc.tdb.results.AbstractTdbResultSetTests

/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package org.apache.jena.jdbc.tdb.results;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import org.apache.jena.jdbc.JdbcCompatibility;
import org.apache.jena.jdbc.results.AbstractResultSetTests;
import org.apache.jena.jdbc.tdb.connections.DebugTdbConnection;
import org.junit.AfterClass;
import org.junit.BeforeClass;

import com.hp.hpl.jena.query.Dataset;
import com.hp.hpl.jena.query.DatasetFactory;
import com.hp.hpl.jena.vocabulary.XSD;

/**
* Abstract
*
*/
public abstract class AbstractTdbResultSetTests extends AbstractResultSetTests {

    private static DebugTdbConnection connection;

    /**
     * Sets up the tests by creating a fake connection for test use
     *
     * @throws SQLException
     */
    @BeforeClass
    public static void setup() throws SQLException {
        connection = new DebugTdbConnection();
        connection.setHoldability(ResultSet.HOLD_CURSORS_OVER_COMMIT);
        connection.setJdbcCompatibilityLevel(JdbcCompatibility.HIGH);
    }

    /**
     * Cleans up after the tests by closing the fake connection
     *
     * @throws SQLException
     */
    @AfterClass
    public static void teardown() throws SQLException {
        // The derived test harnesses actually change the dataset behind the
        // scenes and so we need a temporary fake final dataset for closing the
        // connection or we get an error that the underlying dataset is already
        // closed
        connection.setJenaDataset(DatasetFactory.createMem());
        connection.close();
    }

    /**
     * Method which derived test classes must implement which they can use to
     * turn the provided dataset (which will be a memory dataset) into the
     * actual dataset they want to test against
     *
     * @param ds
     *            Dataset
     * @return Prepared Dataset
     * @throws SQLException
     *             Thrown if the dataset cannot be prepared
     */
    protected abstract Dataset prepareDataset(Dataset ds) throws SQLException;

    @Override
    protected final ResultSet createResults(Dataset ds, String query) throws SQLException {
        return createResults(ds, query, ResultSet.TYPE_FORWARD_ONLY);
    }

    @Override
    protected final ResultSet createResults(Dataset ds, String query, int resultSetType) throws SQLException {
        connection.setJenaDataset(this.prepareDataset(ds));
        Statement stmt = connection.createStatement(resultSetType, ResultSet.CONCUR_READ_ONLY);
        return stmt.executeQuery(query);
    }

    @Override
    protected String getIntegerTypeUri() {
        return XSD.integer.toString();
    }

    @Override
    protected String getByteTypeUri() {
        return XSD.integer.toString();
    }

    @Override
    protected String getShortTypeUri() {
        return XSD.integer.toString();
    }

    @Override
    protected String getLongTypeUri() {
        return XSD.integer.toString();
    }

}
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