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NodeKeyConstraint.java
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NodeKeyConstraint.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.constraints;
import java.util.Arrays;
import org.neo4j.kernel.api.TokenNameLookup;
import org.neo4j.kernel.api.schema_new.constaints.NodeKeyConstraintDescriptor;
import org.neo4j.kernel.api.schema_new.LabelSchemaDescriptor;
import org.neo4j.kernel.api.schema_new.SchemaUtil;
import org.neo4j.kernel.api.schema_new.index.NewIndexDescriptor;
import org.neo4j.kernel.api.schema_new.index.NewIndexDescriptorFactory;
/**
* Description of uniqueness and existence constraint over nodes given a label and a property key id.
*
* @deprecated use {@link NodeKeyConstraintDescriptor} instead.
*/
public class NodeKeyConstraint extends NodePropertyConstraint
{
public NodeKeyConstraint( LabelSchemaDescriptor descriptor )
{
super( descriptor );
}
public NewIndexDescriptor indexDescriptor()
{
return NewIndexDescriptorFactory.forSchema( descriptor );
}
@Override
public void added( ChangeVisitor visitor )
{
visitor.visitAddedNodeKeyConstraint( this );
}
@Override
public void removed( ChangeVisitor visitor )
{
visitor.visitRemovedNodeKeyConstraint( this );
}
@Override
public String userDescription( TokenNameLookup tokenNameLookup )
{
String labelName = labelName( tokenNameLookup );
String boundIdentifier = labelName.toLowerCase();
String properties =
SchemaUtil.niceProperties( tokenNameLookup, descriptor.getPropertyIds(), boundIdentifier + "." );
if ( descriptor.getPropertyIds().length > 1 )
{
properties = "(" + properties + ")";
}
return String.format( "CONSTRAINT ON ( %s:%s ) ASSERT %s IS NODE KEY", boundIdentifier, labelName, properties );
}
@Override
public String toString()
{
return String.format( "CONSTRAINT ON ( n:label[%s] ) ASSERT n.property[%s] IS NODE KEY",
descriptor.getLabelId(), Arrays.toString( descriptor.getPropertyIds() ) );
}
}