/**
* Copyright (c) 2002-2010 "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 Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.impl.core;
import static org.junit.Assert.fail;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import org.neo4j.graphdb.Direction;
import org.neo4j.graphdb.DynamicRelationshipType;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.NotInTransactionException;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.Transaction;
import org.neo4j.kernel.EmbeddedReadOnlyGraphDatabase;
import org.neo4j.kernel.impl.AbstractNeo4jTestCase;
public class TestReadOnlyNeo4j extends AbstractNeo4jTestCase
{
@Test
public void testSimple()
{
GraphDatabaseService readGraphDb = new EmbeddedReadOnlyGraphDatabase(
getStorePath( "neo-test" ) );
Transaction tx = readGraphDb.beginTx();
int count = 0;
for ( Node node : readGraphDb.getAllNodes() )
{
for ( Relationship rel : node.getRelationships() )
{
rel.getOtherNode( node );
for ( String key : rel.getPropertyKeys() )
{
rel.getProperty( key );
}
}
for ( String key : node.getPropertyKeys() )
{
node.getProperty( key );
}
if ( count++ >= 10 )
{
break;
}
}
tx.success();
tx.finish();
tx = readGraphDb.beginTx();
try
{
readGraphDb.createNode();
}
catch ( ReadOnlyDbException e )
{
// good
}
tx.finish();
readGraphDb.shutdown();
}
@Test
public void testReadOnlyOperationsAndNoTransaction()
{
Node node1 = getGraphDb().createNode();
Node node2 = getGraphDb().createNode();
Relationship rel = node1.createRelationshipTo( node2,
DynamicRelationshipType.withName( "TEST" ) );
node1.setProperty( "key1", "value1" );
rel.setProperty( "key1", "value1" );
commit();
// make sure write operations still throw exception
try
{
getGraphDb().createNode();
fail( "Write operation and no transaction should throw exception" );
}
catch ( NotInTransactionException e )
{ // good
}
try
{
node1.createRelationshipTo( node2,
DynamicRelationshipType.withName( "TEST2" ) );
fail( "Write operation and no transaction should throw exception" );
}
catch ( NotInTransactionException e )
{ // good
}
try
{
node1.setProperty( "key1", "value2" );
fail( "Write operation and no transaction should throw exception" );
}
catch ( NotInTransactionException e )
{ // good
}
try
{
rel.removeProperty( "key1" );
fail( "Write operation and no transaction should throw exception" );
}
catch ( NotInTransactionException e )
{ // good
}
// clear caches and try reads
getEmbeddedGraphDb().getConfig().getGraphDbModule().
getNodeManager().clearCache();
assertEquals( node1, getGraphDb().getNodeById( node1.getId() ) );
assertEquals( node2, getGraphDb().getNodeById( node2.getId() ) );
assertEquals( rel, getGraphDb().getRelationshipById( rel.getId() ) );
getEmbeddedGraphDb().getConfig().getGraphDbModule().
getNodeManager().clearCache();
assertEquals( "value1", node1.getProperty( "key1" ) );
Relationship loadedRel = node1.getSingleRelationship(
DynamicRelationshipType.withName( "TEST" ), Direction.OUTGOING );
assertEquals( rel, loadedRel );
assertEquals( "value1", loadedRel.getProperty( "key1" ) );
}
}