Neo4jQueryNodeTest.java

/**
 * Copyright (c) 2002-2011 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.neo4j.jdbc;

import org.junit.Assert;
import org.junit.Test;
import org.neo4j.graphdb.*;

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

import static org.hamcrest.CoreMatchers.is;

public class Neo4jQueryNodeTest extends Neo4jJdbcTest
{

    public Neo4jQueryNodeTest(Mode mode) throws SQLException {
        super(mode);
    }

    @Test
    public void testGetTables() throws SQLException
    {
        ResultSet rs = conn.getMetaData().getTables(null, null, "%", null);

        while (rs.next())
        {
            System.out.println(rs.getString("TABLE_NAME"));
        }
    }

    @Test
    public void testRetrieveNodes() throws SQLException
    {
        createData(gdb);
        Statement stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery("start n=node(*) match p=n-[r?]-m return n,r,m,p,ID(n),length(p),n.name? as name limit 5");
        int count = 0;
        ResultSetMetaData metaData = rs.getMetaData();
        int cols = metaData.getColumnCount();
        Assert.assertThat(cols, is(7));
        while (rs.next())
        {
            for (int i = 1; i <= cols; i++)
            {
                //String columnName = metaData.getColumnName(i);
                //System.out.println(columnName);
                System.out.print(rs.getObject(i) + "\t");
            }
            System.out.println();
            count++;
        }

        Assert.assertThat(count, is(5));
    }

    private void createData(GraphDatabaseService gdb) {
        final Transaction tx = gdb.beginTx();
        final Node n1 = gdb.createNode();
        n1.setProperty("name","n1");
        final Node n2 = gdb.createNode();
        final Node n3 = gdb.createNode();
        final Node n4 = gdb.createNode();
        final Relationship rel1 = n1.createRelationshipTo(n2, DynamicRelationshipType.withName("REL"));
        rel1.setProperty("name","rel1");
        tx.success();tx.finish();
    }
}