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IndexBackedConstraintDescriptor.java
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IndexBackedConstraintDescriptor.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.api.schema.constraints;
import org.neo4j.internal.kernel.api.TokenNameLookup;
import org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor;
import org.neo4j.internal.kernel.api.schema.LabelSchemaSupplier;
import org.neo4j.internal.kernel.api.schema.SchemaUtil;
import org.neo4j.storageengine.api.schema.IndexDescriptor;
import org.neo4j.storageengine.api.schema.IndexDescriptorFactory;
public abstract class IndexBackedConstraintDescriptor extends ConstraintDescriptor implements LabelSchemaSupplier
{
private final LabelSchemaDescriptor schema;
IndexBackedConstraintDescriptor( Type type, LabelSchemaDescriptor schema )
{
super( type );
this.schema = schema;
}
@Override
public LabelSchemaDescriptor schema()
{
return schema;
}
public IndexDescriptor ownedIndexDescriptor()
{
return IndexDescriptorFactory.uniqueForSchema( schema );
}
@Override
public String prettyPrint( TokenNameLookup tokenNameLookup )
{
String labelName = escapeLabelOrRelTyp( tokenNameLookup.labelGetName( schema.getLabelId() ) );
String nodeName = labelName.toLowerCase();
return String.format( "CONSTRAINT ON ( %s:%s ) ASSERT %s IS %s", nodeName, labelName,
formatProperties( schema.getPropertyIds(), tokenNameLookup, nodeName ),
constraintTypeText() );
}
protected abstract String constraintTypeText();
protected String formatProperties( int[] propertyIds, TokenNameLookup tokenNameLookup, String nodeName )
{
return SchemaUtil.niceProperties( tokenNameLookup, propertyIds, nodeName + ".", propertyIds.length > 1 );
}
}