ai.grakn.graql.admin.UniqueVarProperty Maven / Gradle / Ivy
/*
* Grakn - A Distributed Semantic Database
* Copyright (C) 2016 Grakn Labs Limited
*
* Grakn 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.
*
* Grakn 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 Grakn. If not, see .
*/
package ai.grakn.graql.admin;
import ai.grakn.graql.VarPattern;
import javax.annotation.CheckReturnValue;
/**
* A unique property of a {@link VarPattern}.
*
* This property is unique in that each {@link VarPattern} may have exactly zero or one of each
* {@link UniqueVarProperty}.
*
* @author Felix Chapman
*/
public interface UniqueVarProperty extends VarProperty {
@CheckReturnValue
default boolean isUnique() {
return true;
}
}