HERE the RHEEM CODE

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HERE the RHEEM CODE

https://github.com/databloom-ai/incubator-wayang/blob/e772b416946086bd9e912d8dcd3b9cd7ac220064/wayang-api/wayang-api-sql/src/main/java/org/apache/wayang/api/sql/relation/node/WayangFilter.java#L42

/*
 * 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
 * "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
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 */

package org.apache.wayang.api.sql.relation.node;

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;

import java.util.stream.Stream;

public class WayangFilter extends Filter implements WayangRel {

  public WayangFilter(RelOptCluster cluster, RelTraitSet traits, RelNode child, RexNode condition) {
    super(cluster, traits, child, condition);
  }

  @Override
  public void implement(Implementor implementor) {
    implementor.visitChild(0, getInput());
    implementor.addStatement(getWayangFilterStatement(implementor));
  }

  private Stream<String> getWayangFilterStatement(Implementor implementor) {
    System.out.println(condition);
    //TODO HERE the RHEEM CODE
    return implementor.getStatements().filter(ele -> Integer.parseInt(ele) == 2);
  }

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

}

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