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ConstraintDescriptor.java
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ConstraintDescriptor.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.internal.kernel.api.schema.constraints;
import org.neo4j.internal.kernel.api.TokenNameLookup;
import org.neo4j.internal.kernel.api.schema.SchemaDescriptor;
public interface ConstraintDescriptor extends SchemaDescriptor.Supplier
{
enum Type
{
UNIQUE( true, false ),
EXISTS( false, true ),
UNIQUE_EXISTS( true, true );
private final boolean isUnique;
private final boolean mustExist;
Type( boolean isUnique, boolean mustExist )
{
this.isUnique = isUnique;
this.mustExist = mustExist;
}
public boolean enforcesUniqueness()
{
return isUnique;
}
public boolean enforcesPropertyExistence()
{
return mustExist;
}
}
SchemaDescriptor schema();
Type type();
boolean enforcesUniqueness();
boolean enforcesPropertyExistence();
String userDescription( TokenNameLookup tokenNameLookup );
/**
* Checks whether a constraint descriptor Supplier supplies this constraint descriptor.
* @param supplier supplier to get a constraint descriptor from
* @return true if the supplied constraint descriptor equals this constraint descriptor
*/
boolean isSame( Supplier supplier );
interface Supplier
{
ConstraintDescriptor getConstraintDescriptor();
}
String prettyPrint( TokenNameLookup tokenNameLookup );
}