// Copyright 2017 JanusGraph Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.janusgraph.core.attribute;
import com.google.common.base.Preconditions;
import org.janusgraph.graphdb.query.JanusGraphPredicate;
import java.util.Collection;
/**
* Comparison relations for text objects.
*
* @author Matthias Broecheler (me@matthiasb.com)
*/
public enum Contain implements JanusGraphPredicate {
/**
* Whether an element is in a collection
*/
IN {
@Override
public boolean test(Object value, Object condition) {
Preconditions.checkArgument(isValidCondition(condition), "Invalid condition provided: %s", condition);
Collection col = (Collection) condition;
return col.contains(value);
}
@Override
public JanusGraphPredicate negate() {
return NOT_IN;
}
},
/**
* Whether an element is not in a collection
*/
NOT_IN {
@Override
public boolean test(Object value, Object condition) {
Preconditions.checkArgument(isValidCondition(condition), "Invalid condition provided: %s", condition);
Collection col = (Collection) condition;
return !col.contains(value);
}
@Override
public JanusGraphPredicate negate() {
return IN;
}
};
@Override
public boolean isValidValueType(Class<?> clazz) {
return true;
}
@Override
public boolean isValidCondition(Object condition) {
return condition != null && (condition instanceof Collection);
}
@Override
public boolean hasNegation() {
return true;
}
@Override
public boolean isQNF() {
return false;
}
}