content: /*
   * Copyright 2020 Alibaba Group Holding Limited.
   *
   * 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 com.alibaba.graphscope.common.ir.meta.glogue.calcite;
  
  import com.alibaba.graphscope.common.ir.meta.glogue.calcite.handler.ExternalMetaData;
  import com.alibaba.graphscope.common.ir.meta.glogue.calcite.handler.GraphMetadataHandlerProvider;
  import com.alibaba.graphscope.common.ir.rel.metadata.glogue.GlogueEdge;
  import com.alibaba.graphscope.common.ir.rel.metadata.glogue.GlogueQuery;
  
  import org.apache.calcite.rel.RelNode;
  import org.apache.calcite.rel.metadata.MetadataHandlerProvider;
  import org.apache.calcite.rel.metadata.RelMetadataQuery;
  
  import java.util.Set;
  
  public class GraphRelMetadataQuery extends RelMetadataQuery {
      private final ExternalMetaData.GlogueEdges.Handler glogueEdgesHandler;
      private final GlogueQuery glogueQuery;
  
      public GraphRelMetadataQuery(MetadataHandlerProvider provider) {
          super(provider);
          this.glogueEdgesHandler = provider.handler(ExternalMetaData.GlogueEdges.Handler.class);
          this.glogueQuery = ((GraphMetadataHandlerProvider) provider).getGlogueQuery();
      }
  
      public Set<GlogueEdge> getGlogueEdges(RelNode node) {
          return this.glogueEdgesHandler.getGlogueEdges(node, this);
      }
  
      public GlogueQuery getGlogueQuery() {
          return this.glogueQuery;
      }
  }
  