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ExecutionEngineTest.java
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ExecutionEngineTest.java
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/*
* Copyright (c) 2002-2018 "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.cypher.internal.javacompat;
import org.junit.Rule;
import org.junit.Test;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.neo4j.cypher.internal.CommunityCompatibilityFactory;
import org.neo4j.graphdb.Result;
import org.neo4j.internal.kernel.api.security.LoginContext;
import org.neo4j.kernel.GraphDatabaseQueryService;
import org.neo4j.kernel.api.KernelTransaction;
import org.neo4j.kernel.impl.coreapi.InternalTransaction;
import org.neo4j.kernel.impl.coreapi.PropertyContainerLocker;
import org.neo4j.kernel.impl.query.Neo4jTransactionalContextFactory;
import org.neo4j.kernel.impl.query.TransactionalContext;
import org.neo4j.kernel.impl.query.TransactionalContextFactory;
import org.neo4j.kernel.impl.query.clientconnection.ClientConnectionInfo;
import org.neo4j.kernel.monitoring.Monitors;
import org.neo4j.logging.NullLogProvider;
import org.neo4j.test.rule.DatabaseRule;
import org.neo4j.test.rule.ImpermanentDatabaseRule;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
import static org.neo4j.values.virtual.VirtualValues.EMPTY_MAP;
public class ExecutionEngineTest
{
private static final Map<String,Object> NO_PARAMS = Collections.emptyMap();
@Rule
public DatabaseRule database = new ImpermanentDatabaseRule();
@Test
public void shouldConvertListsAndMapsWhenPassingFromScalaToJava() throws Exception
{
GraphDatabaseQueryService graph = new GraphDatabaseCypherService( this.database.getGraphDatabaseAPI() );
Monitors monitors = graph.getDependencyResolver().resolveDependency( Monitors.class );
NullLogProvider nullLogProvider = NullLogProvider.getInstance();
CommunityCompatibilityFactory compatibilityFactory =
new CommunityCompatibilityFactory( graph, monitors, nullLogProvider );
ExecutionEngine executionEngine = new ExecutionEngine( graph, nullLogProvider, compatibilityFactory );
Result result;
try ( InternalTransaction tx = graph
.beginTransaction( KernelTransaction.Type.implicit, LoginContext.AUTH_DISABLED ) )
{
String query = "RETURN { key : 'Value' , collectionKey: [{ inner: 'Map1' }, { inner: 'Map2' }]}";
TransactionalContext tc = createTransactionContext( graph, tx, query );
result = executionEngine.executeQuery( query, NO_PARAMS, tc );
verifyResult( result );
result.close();
tx.success();
}
}
private void verifyResult( Result result )
{
Map firstRowValue = (Map) result.next().values().iterator().next();
assertThat( firstRowValue.get( "key" ), is( "Value" ) );
List theList = (List) firstRowValue.get( "collectionKey" );
assertThat( ((Map) theList.get( 0 )).get( "inner" ), is( "Map1" ) );
assertThat( ((Map) theList.get( 1 )).get( "inner" ), is( "Map2" ) );
}
private TransactionalContext createTransactionContext( GraphDatabaseQueryService graph, InternalTransaction tx,
String query )
{
PropertyContainerLocker locker = new PropertyContainerLocker();
TransactionalContextFactory contextFactory = Neo4jTransactionalContextFactory.create( graph, locker );
return contextFactory.newContext( ClientConnectionInfo.EMBEDDED_CONNECTION, tx, query, EMPTY_MAP );
}
}