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RecordStorageReaderTestBase.java
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RecordStorageReaderTestBase.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.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.kernel.impl.storageengine.impl.recordstorage;
import org.junit.After;
import org.junit.Before;
import java.util.Map;
import org.neo4j.graphdb.DependencyResolver;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Label;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.RelationshipType;
import org.neo4j.graphdb.Transaction;
import org.neo4j.internal.kernel.api.exceptions.KernelException;
import org.neo4j.io.pagecache.tracing.cursor.context.EmptyVersionContextSupplier;
import org.neo4j.kernel.api.KernelTransaction;
import org.neo4j.kernel.impl.api.ClockContext;
import org.neo4j.kernel.impl.api.KernelStatement;
import org.neo4j.kernel.impl.core.ThreadToStatementContextBridge;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.storageengine.api.StorageEngine;
import org.neo4j.storageengine.api.StorageReader;
import org.neo4j.storageengine.api.lock.LockTracer;
import org.neo4j.test.TestGraphDatabaseFactory;
import static org.neo4j.graphdb.Label.label;
/**
* Base class for disk layer tests, which test read-access to committed data.
*/
public abstract class RecordStorageReaderTestBase
{
@SuppressWarnings( "deprecation" )
protected GraphDatabaseAPI db;
protected final Label label1 = label( "FirstLabel" );
protected final Label label2 = label( "SecondLabel" );
protected final RelationshipType relType1 = RelationshipType.withName( "type1" );
protected final RelationshipType relType2 = RelationshipType.withName( "type2" );
protected final String propertyKey = "name";
protected final String otherPropertyKey = "age";
protected KernelStatement state;
protected StorageReader storageReader;
@SuppressWarnings( "deprecation" )
@Before
public void before()
{
db = (GraphDatabaseAPI) createGraphDatabase();
DependencyResolver resolver = db.getDependencyResolver();
this.storageReader = resolver.resolveDependency( StorageEngine.class ).newReader();
this.state = new KernelStatement( null, null, storageReader,
LockTracer.NONE, null, new ClockContext(), EmptyVersionContextSupplier.EMPTY );
}
protected GraphDatabaseService createGraphDatabase()
{
return new TestGraphDatabaseFactory().newImpermanentDatabase();
}
@After
public void after()
{
db.shutdown();
}
protected static Node createLabeledNode( GraphDatabaseService db, Map<String,Object> properties, Label... labels )
{
try ( Transaction tx = db.beginTx() )
{
Node node = db.createNode( labels );
for ( Map.Entry<String,Object> property : properties.entrySet() )
{
node.setProperty( property.getKey(), property.getValue() );
}
tx.success();
return node;
}
}
protected int labelId( Label label )
{
try ( Transaction tx = db.beginTx() )
{
int id = ktx().tokenRead().nodeLabel( label.name() );
tx.success();
return id;
}
}
protected int relationshipTypeId( RelationshipType type )
{
try ( Transaction tx = db.beginTx() )
{
int id = ktx().tokenRead().relationshipType( type.name() );
tx.success();
return id;
}
}
protected String relationshipType( int id ) throws KernelException
{
try ( Transaction tx = db.beginTx() )
{
String name = ktx().tokenRead().relationshipTypeName( id );
tx.success();
return name;
}
}
protected int propertyKeyId( String propertyKey )
{
try ( Transaction tx = db.beginTx() )
{
int id = ktx().tokenRead().propertyKey( propertyKey );
tx.success();
return id;
}
}
protected KernelTransaction ktx()
{
DependencyResolver dependencyResolver = db.getDependencyResolver();
return dependencyResolver.resolveDependency( ThreadToStatementContextBridge.class ).getKernelTransactionBoundToThisThread( true );
}
}