| /* |
| * 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.kylin.query.relnode; |
| |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.calcite.adapter.enumerable.EnumerableCalc; |
| import org.apache.calcite.adapter.enumerable.EnumerableConvention; |
| import org.apache.calcite.adapter.enumerable.EnumerableRel; |
| import org.apache.calcite.plan.RelOptCluster; |
| import org.apache.calcite.plan.RelOptCost; |
| import org.apache.calcite.plan.RelOptPlanner; |
| import org.apache.calcite.plan.RelTrait; |
| import org.apache.calcite.plan.RelTraitSet; |
| import org.apache.calcite.rel.RelNode; |
| import org.apache.calcite.rel.RelWriter; |
| import org.apache.calcite.rel.core.Filter; |
| import org.apache.calcite.rel.metadata.RelMetadataQuery; |
| import org.apache.calcite.rel.type.RelDataType; |
| import org.apache.calcite.rex.RexBuilder; |
| import org.apache.calcite.rex.RexNode; |
| import org.apache.calcite.rex.RexProgram; |
| import org.apache.calcite.rex.RexProgramBuilder; |
| import org.apache.kylin.common.KylinConfig; |
| import org.apache.kylin.metadata.filter.FilterOptimizeTransformer; |
| import org.apache.kylin.metadata.filter.LogicalTupleFilter; |
| import org.apache.kylin.metadata.filter.TupleFilter; |
| import org.apache.kylin.metadata.filter.TupleFilter.FilterOperatorEnum; |
| import org.apache.kylin.metadata.model.TblColRef; |
| import org.apache.kylin.query.relnode.visitor.TupleFilterVisitor; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.Sets; |
| |
| /** |
| */ |
| public class OLAPFilterRel extends Filter implements OLAPRel { |
| |
| ColumnRowType columnRowType; |
| OLAPContext context; |
| boolean autoJustTimezone = KylinConfig.getInstanceFromEnv().getStreamingDerivedTimeTimezone().length() > 0; |
| |
| public OLAPFilterRel(RelOptCluster cluster, RelTraitSet traits, RelNode child, RexNode condition) { |
| super(cluster, traits, child, condition); |
| Preconditions.checkArgument(getConvention() == CONVENTION); |
| Preconditions.checkArgument(getConvention() == child.getConvention()); |
| this.rowType = getRowType(); |
| } |
| |
| @Override |
| public RelOptCost computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq) { |
| return super.computeSelfCost(planner, mq).multiplyBy(.05); |
| } |
| |
| @Override |
| public Filter copy(RelTraitSet traitSet, RelNode input, RexNode condition) { |
| return new OLAPFilterRel(getCluster(), traitSet, input, condition); |
| } |
| |
| @Override |
| public void implementOLAP(OLAPImplementor implementor) { |
| implementor.fixSharedOlapTableScan(this); |
| implementor.visitChild(getInput(), this); |
| |
| this.columnRowType = buildColumnRowType(); |
| this.context = implementor.getContext(); |
| |
| // only translate where clause and don't translate having clause |
| if (!context.afterAggregate) { |
| translateFilter(context); |
| } else { |
| context.afterHavingClauseFilter = true; |
| |
| TupleFilterVisitor visitor = new TupleFilterVisitor(this.columnRowType); |
| TupleFilter havingFilter = this.condition.accept(visitor); |
| if (context.havingFilter == null) |
| context.havingFilter = havingFilter; |
| } |
| } |
| |
| ColumnRowType buildColumnRowType() { |
| OLAPRel olapChild = (OLAPRel) getInput(); |
| ColumnRowType inputColumnRowType = olapChild.getColumnRowType(); |
| return inputColumnRowType; |
| } |
| |
| void translateFilter(OLAPContext context) { |
| if (this.condition == null) { |
| return; |
| } |
| |
| TupleFilterVisitor visitor = new TupleFilterVisitor(this.columnRowType); |
| boolean isRealtimeTable = columnRowType.getColumnByIndex(0).getColumnDesc().getTable().isStreamingTable() ; |
| autoJustTimezone = isRealtimeTable && autoJustTimezone; |
| visitor.setAutoJustByTimezone(autoJustTimezone); |
| TupleFilter filter = this.condition.accept(visitor); |
| |
| // optimize the filter, the optimization has to be segment-irrelevant |
| filter = new FilterOptimizeTransformer().transform(filter); |
| |
| Set<TblColRef> filterColumns = Sets.newHashSet(); |
| TupleFilter.collectColumns(filter, filterColumns); |
| for (TblColRef tblColRef : filterColumns) { |
| if (!tblColRef.isInnerColumn() && context.belongToContextTables(tblColRef)) { |
| context.allColumns.add(tblColRef); |
| context.filterColumns.add(tblColRef); |
| } |
| } |
| |
| context.filter = and(context.filter, filter); |
| } |
| |
| private TupleFilter and(TupleFilter f1, TupleFilter f2) { |
| if (f1 == null) |
| return f2; |
| if (f2 == null) |
| return f1; |
| |
| if (f1.getOperator() == FilterOperatorEnum.AND) { |
| f1.addChild(f2); |
| return f1; |
| } |
| |
| if (f2.getOperator() == FilterOperatorEnum.AND) { |
| f2.addChild(f1); |
| return f2; |
| } |
| |
| LogicalTupleFilter and = new LogicalTupleFilter(FilterOperatorEnum.AND); |
| and.addChild(f1); |
| and.addChild(f2); |
| return and; |
| } |
| |
| @Override |
| public EnumerableRel implementEnumerable(List<EnumerableRel> inputs) { |
| // keep it for having clause |
| RexBuilder rexBuilder = getCluster().getRexBuilder(); |
| RelDataType inputRowType = getInput().getRowType(); |
| RexProgramBuilder programBuilder = new RexProgramBuilder(inputRowType, rexBuilder); |
| programBuilder.addIdentity(); |
| programBuilder.addCondition(this.condition); |
| RexProgram program = programBuilder.getProgram(); |
| |
| return new EnumerableCalc(getCluster(), getCluster().traitSetOf(EnumerableConvention.INSTANCE), // |
| sole(inputs), program); |
| } |
| |
| @Override |
| public void implementRewrite(RewriteImplementor implementor) { |
| implementor.visitChild(this, getInput()); |
| |
| this.rowType = this.deriveRowType(); |
| this.columnRowType = buildColumnRowType(); |
| } |
| |
| @Override |
| public OLAPContext getContext() { |
| return context; |
| } |
| |
| @Override |
| public ColumnRowType getColumnRowType() { |
| return columnRowType; |
| } |
| |
| @Override |
| public boolean hasSubQuery() { |
| OLAPRel olapChild = (OLAPRel) getInput(); |
| return olapChild.hasSubQuery(); |
| } |
| |
| @Override |
| public RelTraitSet replaceTraitSet(RelTrait trait) { |
| RelTraitSet oldTraitSet = this.traitSet; |
| this.traitSet = this.traitSet.replace(trait); |
| return oldTraitSet; |
| } |
| |
| @Override |
| public RelWriter explainTerms(RelWriter pw) { |
| return super.explainTerms(pw).item("ctx", |
| context == null ? "" : String.valueOf(context.id) + "@" + context.realization); |
| } |
| } |