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DefaultIndexReference.java
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DefaultIndexReference.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.kernel.impl.api.store;
import java.util.Arrays;
import org.neo4j.internal.kernel.api.IndexReference;
import org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor;
import org.neo4j.kernel.api.schema.index.SchemaIndexDescriptor;
public class DefaultIndexReference implements IndexReference
{
private final boolean unique;
private final int label;
private final int[] properties;
private DefaultIndexReference( boolean unique, int label, int[] properties )
{
this.unique = unique;
this.label = label;
this.properties = properties;
}
@Override
public boolean isUnique()
{
return unique;
}
@Override
public int label()
{
return label;
}
@Override
public int[] properties()
{
return properties;
}
public static IndexReference unique( int label, int...properties )
{
return new DefaultIndexReference( true, label, properties );
}
public static IndexReference general( int label, int...properties )
{
return new DefaultIndexReference( false, label, properties );
}
public static IndexReference fromDescriptor( SchemaIndexDescriptor descriptor )
{
boolean unique = descriptor.type() == SchemaIndexDescriptor.Type.UNIQUE;
LabelSchemaDescriptor schema = descriptor.schema();
return new DefaultIndexReference( unique, schema.getLabelId(), schema.getPropertyIds() );
}
@Override
public boolean equals( Object o )
{
if ( this == o )
{
return true;
}
if ( o == null || getClass() != o.getClass() )
{
return false;
}
DefaultIndexReference that = (DefaultIndexReference) o;
return unique == that.unique && label == that.label && Arrays.equals( properties, that.properties );
}
@Override
public int hashCode()
{
int result = unique ? 1 : 0;
result = 31 * result + label;
result = 31 * result + Arrays.hashCode( properties );
return result;
}
}