DriverQueries.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.neo4j.cypherdsl.expression.Expression;
import org.neo4j.cypherdsl.grammar.Execute;
import org.neo4j.cypherdsl.grammar.ExecuteWithParameters;

import static org.neo4j.cypherdsl.CypherQuery.*;

/**
 * This class contains all the Cypher queries that the driver needs to issue.
 */
public class DriverQueries
{
    public Execute getTables()
    {
        return start(nodesById("n", 0)).
                match(node("n").out("TYPE").node("type")).
                returns(identifier("type").property("type"));
    }

    public Execute getColumns()
    {
        return start(nodesById("n", 0)).
                match(node("n").out("TYPE").node("type").out("HAS_PROPERTY").node("property")).
                returns(identifier("type").property("type"), identifier("property").property("name"), identifier("property").property("type"));
    }

    public ExecuteWithParameters getColumns(String typeName)
    {
        return start(nodesById("n", 0)).
                match(node("n").out("TYPE").node("type").out("HAS_PROPERTY").node("property")).
                where(identifier("type").string("type").eq(param("typename"))).
                returns(identifier("type").string("type"), identifier("property").string("name"), identifier("property").string("type")).parameter("typename", typeName);
    }
    
    public ExecuteWithParameters getData(String typeName, Iterable<Expression> returnProperties)
    {
        return start(nodesById("n",0)).
                match(node("n").out("TYPE").node("type").in("IS_A").node("instance")).
                where(identifier("type").string("type").eq(param("typename"))).
                returns(returnProperties).
                parameter("typename", typeName);
    }
}