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SchemaRuleSerializationTest.java
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SchemaRuleSerializationTest.java
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/*
* Copyright (c) 2002-2017 "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.kernel.impl.store.record;
import org.junit.Test;
import java.nio.ByteBuffer;
import java.util.stream.IntStream;
import org.neo4j.kernel.api.exceptions.schema.MalformedSchemaRuleException;
import org.neo4j.kernel.api.schema_new.index.NewIndexDescriptorFactory;
import org.neo4j.storageengine.api.schema.SchemaRule;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.fail;
public class SchemaRuleSerializationTest extends SchemaRuleTestBase
{
private static final int VERY_LARGE_CAPACITY = 1024;
@Test
public void shouldSerializeAndDeserializeIndexRules() throws MalformedSchemaRuleException
{
IndexRule regular = IndexRule.indexRule( RULE_ID, NewIndexDescriptorFactory.forLabel( LABEL_ID, PROPERTY_ID_1 ),
PROVIDER_DESCRIPTOR );
assertSerializeAndDeserializeIndexRule( RULE_ID, regular );
IndexRule unique = IndexRule
.constraintIndexRule( RULE_ID_2, NewIndexDescriptorFactory.uniqueForLabel( LABEL_ID, PROPERTY_ID_1 ),
PROVIDER_DESCRIPTOR, RULE_ID );
assertSerializeAndDeserializeIndexRule( RULE_ID_2, unique );
}
@Test
public void shouldSerializeAndDeserializeCompositeIndexRules() throws MalformedSchemaRuleException
{
IndexRule composite = IndexRule.indexRule( RULE_ID,
NewIndexDescriptorFactory.forLabel( LABEL_ID, PROPERTY_ID_1, PROPERTY_ID_2 ), PROVIDER_DESCRIPTOR );
assertSerializeAndDeserializeIndexRule( RULE_ID, composite );
IndexRule compositeUnique = IndexRule.constraintIndexRule( RULE_ID_2,
NewIndexDescriptorFactory.uniqueForLabel( LABEL_ID, PROPERTY_ID_1, PROPERTY_ID_2 ),
PROVIDER_DESCRIPTOR, RULE_ID );
assertSerializeAndDeserializeIndexRule( RULE_ID_2, compositeUnique );
}
@Test
public void shouldSerializeAndDeserialize_Big_CompositeIndexRules() throws MalformedSchemaRuleException
{
int[] propertIds = IntStream.range(1, 200).toArray();
IndexRule composite = IndexRule.indexRule( RULE_ID,
NewIndexDescriptorFactory.forLabel( LABEL_ID, propertIds ), PROVIDER_DESCRIPTOR );
assertSerializeAndDeserializeIndexRule( RULE_ID, composite );
}
private void assertSerializeAndDeserializeIndexRule( long ruleId, IndexRule indexRule )
throws MalformedSchemaRuleException
{
ByteBuffer buffer = ByteBuffer.allocate( VERY_LARGE_CAPACITY );
SchemaRuleSerialization.serialize( indexRule, buffer );
buffer.flip();
IndexRule deserialized = assertIndexRule( SchemaRuleSerialization.deserialize( ruleId, buffer ) );
// THEN
assertThat( deserialized.getId(), equalTo( indexRule.getId() ) );
assertThat( deserialized.getIndexDescriptor(), equalTo( indexRule.getIndexDescriptor() ) );
assertThat( deserialized.getSchemaDescriptor(), equalTo( indexRule.getSchemaDescriptor() ) );
assertThat( deserialized.getProviderDescriptor(), equalTo( indexRule.getProviderDescriptor() ) );
}
private IndexRule assertIndexRule( SchemaRule schemaRule )
{
if ( !(schemaRule instanceof IndexRule) )
{
fail( "Expected IndexRule, but got "+schemaRule.getClass().getSimpleName() );
}
return (IndexRule)schemaRule;
}
}