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RelationTypeSchemaDescriptor.java
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RelationTypeSchemaDescriptor.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.api.schema_new;
import java.util.Arrays;
import org.neo4j.kernel.api.TokenNameLookup;
import static java.lang.String.format;
public class RelationTypeSchemaDescriptor implements SchemaDescriptor
{
private final int relTypeId;
private final int[] propertyIds;
RelationTypeSchemaDescriptor( int relTypeId, int... propertyIds )
{
this.relTypeId = relTypeId;
this.propertyIds = propertyIds;
}
@Override
public <R> R computeWith( SchemaComputer<R> processor )
{
return processor.computeSpecific( this );
}
@Override
public void processWith( SchemaProcessor processor )
{
processor.processSpecific( this );
}
@Override
public String userDescription( TokenNameLookup tokenNameLookup )
{
return String.format( "-[:%s(%s)]-", tokenNameLookup.relationshipTypeGetName( relTypeId ),
SchemaUtil.niceProperties( tokenNameLookup, propertyIds ) );
}
public int getRelTypeId()
{
return relTypeId;
}
@Override
public int[] getPropertyIds()
{
return propertyIds;
}
public int getPropertyId()
{
if ( propertyIds.length != 1 )
{
throw new IllegalStateException(
"Single property schema requires one property but had " + propertyIds.length );
}
return propertyIds[0];
}
@Override
public boolean equals( Object o )
{
if ( o != null && o instanceof RelationTypeSchemaDescriptor )
{
RelationTypeSchemaDescriptor that = (RelationTypeSchemaDescriptor)o;
return relTypeId == that.getRelTypeId() && Arrays.equals( propertyIds, that.getPropertyIds() );
}
return false;
}
@Override
public int hashCode()
{
return Arrays.hashCode( propertyIds ) + 31 * relTypeId;
}
@Override
public int compareTo( SchemaDescriptor o )
{
if ( o instanceof RelationTypeSchemaDescriptor )
{
RelationTypeSchemaDescriptor other = (RelationTypeSchemaDescriptor) o;
if ( relTypeId == other.getRelTypeId() )
{
return SchemaUtil.comparePropertyKeyIds( propertyIds, other.getPropertyIds() );
}
else
{
return relTypeId - other.getRelTypeId();
}
}
else
{
return -1;
}
}
}