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[Flink-3226] Translate logical plan FlinkRels into physical plan Data…
…SetRels.
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...braries/flink-table/src/main/scala/org/apache/flink/api/table/plan/PlanGenException.scala
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| /* | ||
| * 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.flink.api.table.plan | ||
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| class PlanGenException(message: String, exception: Exception) extends | ||
| RuntimeException(message: String, exception: Exception){ | ||
|
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| def this(message: String){ | ||
| this(message, null) | ||
| } | ||
| } |
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71 changes: 71 additions & 0 deletions
71
...nk-table/src/main/scala/org/apache/flink/api/table/plan/functions/AggregateFunction.scala
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| /* | ||
| * 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.flink.api.table.plan.functions | ||
|
|
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| import java.lang.Iterable | ||
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| import com.google.common.base.Preconditions | ||
| import org.apache.flink.api.common.functions.RichGroupReduceFunction | ||
| import org.apache.flink.api.table.plan.functions.aggregate.Aggregate | ||
| import org.apache.flink.configuration.Configuration | ||
| import org.apache.flink.util.Collector | ||
|
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| import scala.collection.JavaConversions._ | ||
|
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| /** | ||
| * A wrapper Flink GroupReduceOperator UDF of aggregates, it takes the grouped data as input, | ||
| * feed to the aggregates, and collect the record with aggregated value. | ||
| * | ||
| * @param aggregates Sql aggregate functions. | ||
| * @param fields The grouped keys' index. | ||
| */ | ||
| class AggregateFunction( | ||
| private val aggregates: Array[Aggregate[_ <: Any]], | ||
| private val fields: Array[Int]) extends RichGroupReduceFunction[Any, Any] { | ||
|
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| override def open(config: Configuration) { | ||
| Preconditions.checkNotNull(aggregates) | ||
| Preconditions.checkNotNull(fields) | ||
| Preconditions.checkArgument(aggregates.size == fields.size) | ||
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| aggregates.foreach(_.initiateAggregate) | ||
| } | ||
|
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| override def reduce(records: Iterable[Any], out: Collector[Any]): Unit = { | ||
| var currentValue: Any = null | ||
|
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| // iterate all input records, feed to each aggregate. | ||
| val aggregateAndField = aggregates.zip(fields) | ||
| records.foreach { | ||
| value => | ||
| currentValue = value | ||
| aggregateAndField.foreach { | ||
| case (aggregate, field) => | ||
| aggregate.aggregate(FunctionUtils.getFieldValue(value, field)) | ||
| } | ||
| } | ||
|
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| // reuse the latest record, and set all the aggregated values. | ||
| aggregateAndField.foreach { | ||
| case (aggregate, field) => | ||
| FunctionUtils.putFieldValue(currentValue, field, aggregate.getAggregated()) | ||
| } | ||
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| out.collect(currentValue) | ||
| } | ||
| } |
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.../flink-table/src/main/scala/org/apache/flink/api/table/plan/functions/FunctionUtils.scala
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| /* | ||
| * 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.flink.api.table.plan.functions | ||
|
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| import org.apache.flink.api.table.Row | ||
|
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| object FunctionUtils { | ||
|
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| def getFieldValue(record: Any, fieldIndex: Int): Any = { | ||
| record match { | ||
| case row: Row => row.productElement(fieldIndex) | ||
| case _ => throw new UnsupportedOperationException("Do not support types other than Row now.") | ||
| } | ||
| } | ||
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| def putFieldValue(record: Any, fieldIndex: Int, fieldValue: Any): Unit = { | ||
| record match { | ||
| case row: Row => row.setField(fieldIndex, fieldValue) | ||
| case _ => throw new UnsupportedOperationException("Do not support types other than Row now.") | ||
| } | ||
| } | ||
| } |
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42
...-table/src/main/scala/org/apache/flink/api/table/plan/functions/aggregate/Aggregate.scala
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| /* | ||
| * 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.flink.api.table.plan.functions.aggregate | ||
|
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| /** | ||
| * Represent a Sql aggregate function, user should initiate the aggregate at first, then feed it | ||
| * with grouped aggregate field values, and get aggregated value finally. | ||
| * @tparam T | ||
| */ | ||
| trait Aggregate[T] { | ||
| /** | ||
| * Initiate current aggregate state. | ||
| */ | ||
| def initiateAggregate | ||
|
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| /** | ||
| * Feed the aggregate field value. | ||
| * @param value | ||
| */ | ||
| def aggregate(value: Any) | ||
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| /** | ||
| * Return final aggregated value. | ||
| * @return | ||
| */ | ||
| def getAggregated(): T | ||
| } |
135 changes: 135 additions & 0 deletions
135
...src/main/scala/org/apache/flink/api/table/plan/functions/aggregate/AggregateFactory.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| /* | ||
| * 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.flink.api.table.plan.functions.aggregate | ||
|
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| import java.util | ||
|
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| import org.apache.calcite.rel.core.AggregateCall | ||
| import org.apache.calcite.sql.SqlAggFunction | ||
| import org.apache.calcite.sql.`type`.SqlTypeName | ||
| import org.apache.calcite.sql.`type`.SqlTypeName._ | ||
| import org.apache.calcite.sql.fun._ | ||
| import org.apache.flink.api.common.functions.RichGroupReduceFunction | ||
| import org.apache.flink.api.table.plan.PlanGenException | ||
| import org.apache.flink.api.table.plan.functions.AggregateFunction | ||
|
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| object AggregateFactory { | ||
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| def createAggregateInstance(aggregateCalls: Seq[AggregateCall]): | ||
| RichGroupReduceFunction[Any, Any] = { | ||
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| val fieldIndexes = new Array[Int](aggregateCalls.size) | ||
| val aggregates = new Array[Aggregate[_ <: Any]](aggregateCalls.size) | ||
| aggregateCalls.zipWithIndex.map { case (aggregateCall, index) => | ||
| val sqlType = aggregateCall.getType | ||
| val argList: util.List[Integer] = aggregateCall.getArgList | ||
| // currently assume only aggregate on singleton field. | ||
| if (argList.isEmpty) { | ||
| if (aggregateCall.getAggregation.isInstanceOf[SqlCountAggFunction]) { | ||
| fieldIndexes(index) = 0 | ||
| } else { | ||
| throw new PlanGenException("Aggregate fields should not be empty.") | ||
| } | ||
| } else { | ||
| fieldIndexes(index) = argList.get(0); | ||
| } | ||
| aggregateCall.getAggregation match { | ||
| case _: SqlSumAggFunction | _: SqlSumEmptyIsZeroAggFunction => { | ||
| sqlType.getSqlTypeName match { | ||
| case TINYINT => | ||
| aggregates(index) = new TinyIntSumAggregate | ||
| case SMALLINT => | ||
| aggregates(index) = new SmallIntSumAggregate | ||
| case INTEGER => | ||
| aggregates(index) = new IntSumAggregate | ||
| case BIGINT => | ||
| aggregates(index) = new LongSumAggregate | ||
| case FLOAT => | ||
| aggregates(index) = new FloatSumAggregate | ||
| case DOUBLE => | ||
| aggregates(index) = new DoubleSumAggregate | ||
| case sqlType: SqlTypeName => | ||
| throw new PlanGenException("Sum aggregate does no support type:" + sqlType) | ||
| } | ||
| } | ||
| case _: SqlAvgAggFunction => { | ||
| sqlType.getSqlTypeName match { | ||
| case TINYINT => | ||
| aggregates(index) = new TinyIntAvgAggregate | ||
| case SMALLINT => | ||
| aggregates(index) = new SmallIntAvgAggregate | ||
| case INTEGER => | ||
| aggregates(index) = new IntAvgAggregate | ||
| case BIGINT => | ||
| aggregates(index) = new LongAvgAggregate | ||
| case FLOAT => | ||
| aggregates(index) = new FloatAvgAggregate | ||
| case DOUBLE => | ||
| aggregates(index) = new DoubleAvgAggregate | ||
| case sqlType: SqlTypeName => | ||
| throw new PlanGenException("Avg aggregate does no support type:" + sqlType) | ||
| } | ||
| } | ||
| case sqlMinMaxFunction: SqlMinMaxAggFunction => { | ||
| if (sqlMinMaxFunction.isMin) { | ||
| sqlType.getSqlTypeName match { | ||
| case TINYINT => | ||
| aggregates(index) = new TinyIntMinAggregate | ||
| case SMALLINT => | ||
| aggregates(index) = new SmallIntMinAggregate | ||
| case INTEGER => | ||
| aggregates(index) = new IntMinAggregate | ||
| case BIGINT => | ||
| aggregates(index) = new LongMinAggregate | ||
| case FLOAT => | ||
| aggregates(index) = new FloatMinAggregate | ||
| case DOUBLE => | ||
| aggregates(index) = new DoubleMinAggregate | ||
| case sqlType: SqlTypeName => | ||
| throw new PlanGenException("Min aggregate does no support type:" + sqlType) | ||
| } | ||
| } else { | ||
| sqlType.getSqlTypeName match { | ||
| case TINYINT => | ||
| aggregates(index) = new TinyIntMaxAggregate | ||
| case SMALLINT => | ||
| aggregates(index) = new SmallIntMaxAggregate | ||
| case INTEGER => | ||
| aggregates(index) = new IntMaxAggregate | ||
| case BIGINT => | ||
| aggregates(index) = new LongMaxAggregate | ||
| case FLOAT => | ||
| aggregates(index) = new FloatMaxAggregate | ||
| case DOUBLE => | ||
| aggregates(index) = new DoubleMaxAggregate | ||
| case sqlType: SqlTypeName => | ||
| throw new PlanGenException("Max aggregate does no support type:" + sqlType) | ||
| } | ||
| } | ||
| } | ||
| case _: SqlCountAggFunction => | ||
| aggregates(index) = new CountAggregate | ||
| case unSupported: SqlAggFunction => | ||
| throw new PlanGenException("unsupported Function: " + unSupported.getName) | ||
| } | ||
| } | ||
|
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| new AggregateFunction(aggregates, fieldIndexes) | ||
| } | ||
|
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| } |
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