amaliujia commented on a change in pull request #10946: URL: https://github.com/apache/beam/pull/10946#discussion_r422346192
########## File path: sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamTableFunctionScanRel.java ########## @@ -0,0 +1,157 @@ +/* + * 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.beam.sdk.extensions.sql.impl.rel; + +import static org.apache.beam.vendor.calcite.v1_20_0.com.google.common.base.Preconditions.checkArgument; + +import java.lang.reflect.Type; +import java.util.List; +import java.util.Set; +import org.apache.beam.sdk.extensions.sql.impl.planner.BeamCostModel; +import org.apache.beam.sdk.extensions.sql.impl.planner.NodeStats; +import org.apache.beam.sdk.extensions.sql.impl.utils.CalciteUtils; +import org.apache.beam.sdk.schemas.Schema; +import org.apache.beam.sdk.transforms.DoFn; +import org.apache.beam.sdk.transforms.PTransform; +import org.apache.beam.sdk.transforms.ParDo; +import org.apache.beam.sdk.transforms.windowing.FixedWindows; +import org.apache.beam.sdk.transforms.windowing.IntervalWindow; +import org.apache.beam.sdk.values.PCollection; +import org.apache.beam.sdk.values.PCollectionList; +import org.apache.beam.sdk.values.Row; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptCluster; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptPlanner; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.TableFunctionScan; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.metadata.RelColumnMapping; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.metadata.RelMetadataQuery; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexCall; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexInputRef; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexLiteral; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexNode; +import org.joda.time.Duration; + +public class BeamTableFunctionScanRel extends TableFunctionScan implements BeamRelNode { + public BeamTableFunctionScanRel( + RelOptCluster cluster, + RelTraitSet traitSet, + List<RelNode> inputs, + RexNode rexCall, + Type elementType, + RelDataType rowType, + Set<RelColumnMapping> columnMappings) { + super(cluster, traitSet, inputs, rexCall, elementType, rowType, columnMappings); + } + + @Override + public TableFunctionScan copy( + RelTraitSet traitSet, + List<RelNode> list, + RexNode rexNode, + Type type, + RelDataType relDataType, + Set<RelColumnMapping> set) { + return new BeamTableFunctionScanRel( + getCluster(), traitSet, list, rexNode, type, relDataType, columnMappings); + } + + @Override + public PTransform<PCollectionList<Row>, PCollection<Row>> buildPTransform() { + return new Transform(); + } + + private class Transform extends PTransform<PCollectionList<Row>, PCollection<Row>> { + + @Override + public PCollection<Row> expand(PCollectionList<Row> input) { + checkArgument( + input.size() == 1, + "Wrong number of inputs for %s: %s", + BeamTableFunctionScanRel.class.getSimpleName(), + input); + checkArgument( + ((RexCall) getCall()).getOperator().getName().equals("TUMBLE"), + "Only support TUMBLE table-valued function"); + RexCall call = ((RexCall) getCall()); + RexInputRef wmCol = (RexInputRef) call.getOperands().get(1); + PCollection<Row> upstream = input.get(0); + Schema outputSchema = CalciteUtils.toSchema(getRowType()); + return upstream + .apply( + ParDo.of( + new FixedWindowDoFn( + FixedWindows.of(durationParameter(call.getOperands().get(2))), + wmCol.getIndex(), + outputSchema))) + .setRowSchema(outputSchema); + } + } + + private Duration durationParameter(RexNode node) { + return Duration.millis(longValue(node)); + } + + private long longValue(RexNode operand) { + if (operand instanceof RexLiteral) { + return ((Number) RexLiteral.value(operand)).longValue(); + } else { + throw new IllegalArgumentException(String.format("[%s] is not valid.", operand)); + } + } + + private static class FixedWindowDoFn extends DoFn<Row, Row> { + private int windowFieldIndex; + private FixedWindows windowFn; + private Schema outputSchema; + + public FixedWindowDoFn(FixedWindows windowFn, int windowFieldIndex, Schema schema) { + this.windowFn = windowFn; + this.windowFieldIndex = windowFieldIndex; + this.outputSchema = schema; + } + + @ProcessElement + public void processElement(ProcessContext c) { + Row row = c.element(); + IntervalWindow window = windowFn.assignWindow(row.getDateTime(windowFieldIndex).toInstant()); + Row.Builder builder = Row.withSchema(outputSchema); + builder.addValues(row.getValues()); + // TODO: add window_start and window_end; Review comment: Ah it is out-of-date... Removed ########## File path: sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rule/BeamTableFunctionScanRule.java ########## @@ -0,0 +1,60 @@ +/* + * 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.beam.sdk.extensions.sql.impl.rule; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import org.apache.beam.sdk.extensions.sql.impl.rel.BeamLogicalConvention; +import org.apache.beam.sdk.extensions.sql.impl.rel.BeamTableFunctionScanRel; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.Convention; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.convert.ConverterRule; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.TableFunctionScan; +import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.logical.LogicalTableFunctionScan; + +public class BeamTableFunctionScanRule extends ConverterRule { Review comment: Done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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