/*
 * 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 io.prestosql.sql.tree;

import java.util.List;

public abstract class JoinCriteria
{
    // Force subclasses to have a proper equals and hashcode implementation
    @Override
    public abstract boolean equals(Object obj);

    @Override
    public abstract int hashCode();

    @Override
    public abstract String toString();

    public abstract List<Node> getNodes();
}
