content: /*
   * 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 under the License.
   */
  package org.apache.calcite.rel.rules.materialize;
  
  import org.apache.calcite.plan.RelOptRuleCall;
  import org.apache.calcite.plan.hep.HepProgram;
  import org.apache.calcite.rel.core.Filter;
  import org.apache.calcite.rel.core.Project;
  import org.apache.calcite.rel.core.RelFactories;
  import org.apache.calcite.tools.RelBuilderFactory;
  
  import org.immutables.value.Value;
  
  /** Rule that matches Project on Filter. */
  @Value.Enclosing
  public class MaterializedViewProjectFilterRule
      extends MaterializedViewJoinRule<MaterializedViewProjectFilterRule.Config> {
  
    private MaterializedViewProjectFilterRule(Config config) {
      super(config);
    }
  
    @Deprecated // to be removed before 2.0
    public MaterializedViewProjectFilterRule(RelBuilderFactory relBuilderFactory,
        boolean generateUnionRewriting, HepProgram unionRewritingPullProgram,
        boolean fastBailOut) {
      this(Config.DEFAULT
          .withRelBuilderFactory(relBuilderFactory)
          .as(Config.class)
          .withGenerateUnionRewriting(generateUnionRewriting)
          .withUnionRewritingPullProgram(unionRewritingPullProgram)
          .withFastBailOut(fastBailOut)
          .as(Config.class));
    }
  
    @Override public void onMatch(RelOptRuleCall call) {
      final Project project = call.rel(0);
      final Filter filter = call.rel(1);
      perform(call, project, filter);
    }
  
    /** Rule configuration. */
    @Value.Immutable(singleton = false)
    public interface Config extends MaterializedViewRule.Config {
      Config DEFAULT = ImmutableMaterializedViewProjectFilterRule.Config.builder()
          .withRelBuilderFactory(RelFactories.LOGICAL_BUILDER)
          .withOperandSupplier(b0 ->
              b0.operand(Project.class).oneInput(b1 ->
                  b1.operand(Filter.class).anyInputs()))
          .withDescription("MaterializedViewJoinRule(Project-Filter)")
          .withGenerateUnionRewriting(true)
          .withUnionRewritingPullProgram(null)
          .withFastBailOut(true)
          .build();
  
      @Override default MaterializedViewProjectFilterRule toRule() {
        return new MaterializedViewProjectFilterRule(this);
      }
    }
  }
  