java source code of GremlinFilter

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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package org.twilmes.sql.gremlin.rel;

import org.apache.calcite.plan.RelOptCluster;
import org.apache.calcite.plan.RelTraitSet;
import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rel.core.Filter;
import org.apache.calcite.rex.RexNode;

/**
 * Created by twilmes on 11/14/15.
 */
public class GremlinFilter extends Filter implements GremlinRel {
    public GremlinFilter(
            RelOptCluster cluster,
            RelTraitSet traitSet,
            RelNode child,
            RexNode condition) {
        super(cluster, traitSet, child, condition);
    }

    @Override
    public Filter copy(RelTraitSet traitSet, RelNode input, RexNode condition) {
        return new GremlinFilter(getCluster(), traitSet, input, condition);
    }

    @Override
    public void implement(Implementor implementor) {}
}