| /* |
| * 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.drill.exec.planner.torel; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.calcite.rel.RelRoot; |
| import org.apache.calcite.rel.hint.RelHint; |
| import org.apache.drill.common.expression.LogicalExpression; |
| import org.apache.drill.common.logical.LogicalPlan; |
| import org.apache.drill.common.logical.data.Except; |
| import org.apache.drill.common.logical.data.Filter; |
| import org.apache.drill.common.logical.data.GroupingAggregate; |
| import org.apache.drill.common.logical.data.Intersect; |
| import org.apache.drill.common.logical.data.Join; |
| import org.apache.drill.common.logical.data.Limit; |
| import org.apache.drill.common.logical.data.LogicalOperator; |
| import org.apache.drill.common.logical.data.Order; |
| import org.apache.drill.common.logical.data.Project; |
| import org.apache.drill.common.logical.data.Scan; |
| import org.apache.drill.common.logical.data.Union; |
| import org.apache.drill.common.logical.data.visitors.AbstractLogicalVisitor; |
| import org.apache.drill.exec.planner.logical.DrillAggregateRel; |
| import org.apache.drill.exec.planner.logical.DrillExceptRel; |
| import org.apache.drill.exec.planner.logical.DrillIntersectRel; |
| import org.apache.drill.exec.planner.logical.DrillJoinRel; |
| import org.apache.drill.exec.planner.logical.DrillLimitRel; |
| import org.apache.drill.exec.planner.logical.DrillRel; |
| import org.apache.drill.exec.planner.logical.DrillSortRel; |
| import org.apache.drill.exec.planner.logical.DrillUnionRel; |
| import org.apache.drill.exec.planner.logical.ScanFieldDeterminer; |
| import org.apache.drill.exec.planner.logical.ScanFieldDeterminer.FieldList; |
| import org.apache.calcite.rel.InvalidRelException; |
| import org.apache.calcite.rel.RelNode; |
| import org.apache.calcite.plan.RelOptCluster; |
| import org.apache.calcite.plan.RelOptTable; |
| import org.apache.calcite.plan.RelOptTable.ToRelContext; |
| import org.apache.calcite.plan.RelTraitSet; |
| import org.apache.calcite.rel.type.RelDataType; |
| import org.apache.calcite.rel.type.RelDataTypeFactory; |
| import org.apache.calcite.rex.RexBuilder; |
| import org.apache.calcite.rex.RexNode; |
| |
| public class ConversionContext implements ToRelContext { |
| |
| private static final ConverterVisitor VISITOR = new ConverterVisitor(); |
| |
| private final Map<Scan, FieldList> scanFieldLists; |
| private final RelOptCluster cluster; |
| |
| public ConversionContext(RelOptCluster cluster, LogicalPlan plan) { |
| super(); |
| scanFieldLists = ScanFieldDeterminer.getFieldLists(plan); |
| this.cluster = cluster; |
| } |
| |
| @Override |
| public RelOptCluster getCluster() { |
| return cluster; |
| } |
| |
| @Override |
| public List<RelHint> getTableHints() { |
| return Collections.emptyList(); |
| } |
| |
| private FieldList getFieldList(Scan scan) { |
| assert scanFieldLists.containsKey(scan); |
| return scanFieldLists.get(scan); |
| } |
| |
| |
| public RexBuilder getRexBuilder(){ |
| return cluster.getRexBuilder(); |
| } |
| |
| public RelTraitSet getLogicalTraits(){ |
| RelTraitSet set = RelTraitSet.createEmpty(); |
| set.add(DrillRel.DRILL_LOGICAL); |
| return set; |
| } |
| |
| public RelNode toRel(LogicalOperator operator) throws InvalidRelException{ |
| return operator.accept(VISITOR, this); |
| } |
| |
| public RexNode toRex(LogicalExpression e){ |
| return null; |
| } |
| |
| public RelDataTypeFactory getTypeFactory(){ |
| return cluster.getTypeFactory(); |
| } |
| |
| public RelOptTable getTable(Scan scan){ |
| FieldList list = getFieldList(scan); |
| |
| return null; |
| } |
| |
| @Override |
| public RelRoot expandView(RelDataType rowType, String queryString, List<String> schemaPath, List<String> viewPath) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| private static class ConverterVisitor extends AbstractLogicalVisitor<RelNode, ConversionContext, InvalidRelException>{ |
| |
| @Override |
| public RelNode visitScan(Scan scan, ConversionContext context){ |
| //return BaseScanRel.convert(scan, context); |
| return null; |
| } |
| |
| @Override |
| public RelNode visitFilter(Filter filter, ConversionContext context) throws InvalidRelException{ |
| //return BaseFilterRel.convert(filter, context); |
| return null; |
| } |
| |
| @Override |
| public RelNode visitProject(Project project, ConversionContext context) throws InvalidRelException{ |
| //return BaseProjectRel.convert(project, context); |
| return null; |
| } |
| |
| @Override |
| public RelNode visitOrder(Order order, ConversionContext context) throws InvalidRelException{ |
| return DrillSortRel.convert(order, context); |
| } |
| |
| @Override |
| public RelNode visitJoin(Join join, ConversionContext context) throws InvalidRelException{ |
| return DrillJoinRel.convert(join, context); |
| } |
| |
| @Override |
| public RelNode visitLimit(Limit limit, ConversionContext context) throws InvalidRelException{ |
| return DrillLimitRel.convert(limit, context); |
| } |
| |
| @Override |
| public RelNode visitUnion(Union union, ConversionContext context) throws InvalidRelException{ |
| return DrillUnionRel.convert(union, context); |
| } |
| |
| @Override |
| public RelNode visitExcept(Except except, ConversionContext context) throws InvalidRelException{ |
| return DrillExceptRel.convert(except, context); |
| } |
| |
| @Override |
| public RelNode visitIntersect(Intersect intersect, ConversionContext context) throws InvalidRelException{ |
| return DrillIntersectRel.convert(intersect, context); |
| } |
| |
| @Override |
| public RelNode visitGroupingAggregate(GroupingAggregate groupBy, ConversionContext context) |
| throws InvalidRelException { |
| return DrillAggregateRel.convert(groupBy, context); |
| } |
| |
| } |
| |
| |
| |
| } |