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[FLINK-990] Added constant fields and combinable annotations forwardi…
…ng to Scala API This closes apache#51
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stratosphere-scala/src/main/scala/eu/stratosphere/api/scala/AnnotationUtil.scala
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| /* | ||
| * Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu) | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
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| package eu.stratosphere.api.scala | ||
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| import eu.stratosphere.api.common.operators.util.FieldSet | ||
| import eu.stratosphere.api.common.operators._ | ||
| import eu.stratosphere.api.common.operators.base.{GroupReduceOperatorBase, DeltaIterationBase, BulkIterationBase, GenericDataSourceBase} | ||
| import eu.stratosphere.api.java.record.functions.FunctionAnnotation | ||
| import eu.stratosphere.api.java.record.operators.BulkIteration.PartialSolutionPlaceHolder | ||
| import eu.stratosphere.api.java.record.operators.DeltaIteration.{WorksetPlaceHolder, SolutionSetPlaceHolder} | ||
| import eu.stratosphere.api.java.record.operators.GenericDataSink | ||
| import eu.stratosphere.api.java.record.operators.ReduceOperator.Combinable | ||
| import collection.JavaConversions.asScalaIterator | ||
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| object AnnotationUtil { | ||
| val visited = collection.mutable.Set[Operator[_]]() | ||
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| def setAnnotations(sinks: Seq[ScalaSink[_]]): Seq[ScalaSink[_]] = { | ||
| visited.clear() | ||
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| sinks foreach setAnnotations | ||
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| sinks | ||
| } | ||
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| def setAnnotations(sink: ScalaSink[_]):Unit = { | ||
| setAnnotations(sink.sink.getInput) | ||
| } | ||
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| def setAnnotations(operator: Operator[_]):Unit = { | ||
| if(operator != null && !visited.contains(operator)){ | ||
| visited.add(operator) | ||
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| operator match { | ||
| case op: GenericDataSourceBase[_,_] => | ||
| case op: GenericDataSink => | ||
| setAnnotations(op.getInput) | ||
| case op: PartialSolutionPlaceHolder => | ||
| case op: SolutionSetPlaceHolder => | ||
| case op: WorksetPlaceHolder => | ||
| case op: DeltaIterationBase[_, _] => | ||
| updateDualSemanticProperties(op) | ||
| setAnnotations(op.getSolutionSetDelta) | ||
| setAnnotations(op.getNextWorkset) | ||
| setAnnotations(op.getInitialWorkset) | ||
| setAnnotations(op.getInitialSolutionSet) | ||
| case op: DualInputOperator[_, _, _, _] => | ||
| updateDualSemanticProperties(op) | ||
| setAnnotations(op.getFirstInput) | ||
| setAnnotations(op.getSecondInput) | ||
| case op: BulkIterationBase[_] => | ||
| updateSingleSemanticProperties(op) | ||
| setAnnotations(op.getInput) | ||
| setAnnotations(op.getNextPartialSolution) | ||
| setAnnotations(op.getTerminationCriterion) | ||
| case op: GroupReduceOperatorBase[_, _, _] => | ||
| updateCombinable(op) | ||
| setAnnotations(op.getInput) | ||
| case op: SingleInputOperator[_, _, _] => | ||
| updateSingleSemanticProperties(op) | ||
| setAnnotations(op.getInput) | ||
| } | ||
| } | ||
| } | ||
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| def updateCombinable(op: GroupReduceOperatorBase[_, _, _]){ | ||
| if(op.isInstanceOf[ScalaOperator[_,_]]) { | ||
| val scalaOp = op.asInstanceOf[ScalaOperator[_, _]] | ||
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| val combinableAnnotaion = scalaOp.getUserCodeAnnotation(classOf[Combinable]) | ||
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| if (combinableAnnotaion != null) { | ||
| op.setCombinable(true) | ||
| } | ||
| } | ||
| } | ||
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| def updateDualSemanticProperties(op: DualInputOperator[_, _, _, _]){ | ||
| if(op.isInstanceOf[ScalaOperator[_,_]]) { | ||
| val scalaOp = op.asInstanceOf[ScalaOperator[_, _]] | ||
| val properties = op.getSemanticProperties | ||
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| // get readSet annotation from stub | ||
| val constantSet1Annotation: FunctionAnnotation.ConstantFieldsFirst = scalaOp.getUserCodeAnnotation( | ||
| classOf[FunctionAnnotation.ConstantFieldsFirst]) | ||
| val constantSet2Annotation: FunctionAnnotation.ConstantFieldsSecond = scalaOp.getUserCodeAnnotation( | ||
| classOf[FunctionAnnotation.ConstantFieldsSecond]) | ||
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| // get readSet annotation from stub | ||
| val notConstantSet1Annotation: FunctionAnnotation.ConstantFieldsFirstExcept = scalaOp.getUserCodeAnnotation( | ||
| classOf[FunctionAnnotation.ConstantFieldsFirstExcept]) | ||
| val notConstantSet2Annotation: FunctionAnnotation.ConstantFieldsSecondExcept = scalaOp.getUserCodeAnnotation( | ||
| classOf[FunctionAnnotation.ConstantFieldsSecondExcept]) | ||
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| if (notConstantSet1Annotation != null && constantSet1Annotation != null) { | ||
| throw new RuntimeException("Either ConstantFieldsFirst or ConstantFieldsFirstExcept can be specified, not both.") | ||
| } | ||
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| if (constantSet2Annotation != null && notConstantSet2Annotation != null) { | ||
| throw new RuntimeException("Either ConstantFieldsSecond or ConstantFieldsSecondExcept can be specified, not both.") | ||
| } | ||
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| // extract readSets from annotations | ||
| if (notConstantSet1Annotation != null) { | ||
| for (element <- notConstantSet1Annotation.value()) { | ||
| if (properties.getForwardedField1(element) != null) { | ||
| throw new RuntimeException("Field " + element + " cannot be forwarded and non constant at the same time.") | ||
| } | ||
| } | ||
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| val fieldSet = new FieldSet(notConstantSet1Annotation.value(): _*) | ||
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| for (i <- 0 until scalaOp.getUDF().getOutputLength) { | ||
| if (!fieldSet.contains(i)) { | ||
| properties.addForwardedField1(i, i) | ||
| } | ||
| } | ||
| } else if (constantSet1Annotation != null) { | ||
| for (value <- constantSet1Annotation.value) { | ||
| properties.addForwardedField1(value, value) | ||
| } | ||
| } | ||
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| if (notConstantSet2Annotation != null) { | ||
| for (element <- notConstantSet2Annotation.value()) { | ||
| if (properties.getForwardedField2(element) != null) { | ||
| throw new RuntimeException("Field " + element + " cannot be forwarded and non constant at the same time.") | ||
| } | ||
| } | ||
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| val fieldSet = new FieldSet(notConstantSet2Annotation.value(): _*) | ||
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| for (i <- 0 until scalaOp.getUDF().getOutputLength) { | ||
| if (!fieldSet.contains(i)) { | ||
| properties.addForwardedField2(i, i) | ||
| } | ||
| } | ||
| } else if (constantSet2Annotation != null) { | ||
| for (value <- constantSet2Annotation.value) { | ||
| properties.addForwardedField2(value, value) | ||
| } | ||
| } | ||
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| op.setSemanticProperties(properties) | ||
| } | ||
| } | ||
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| def updateSingleSemanticProperties(op: SingleInputOperator[_, _, _]) { | ||
| if (op.isInstanceOf[ScalaOperator[_, _]]) { | ||
| val scalaOp = op.asInstanceOf[ScalaOperator[_, _]] | ||
| var properties = op.getSemanticProperties | ||
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| if (properties == null) { | ||
| properties = new SingleInputSemanticProperties() | ||
| } | ||
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| // get constantSet annotation from stub | ||
| val constantSet: FunctionAnnotation.ConstantFields = scalaOp.getUserCodeAnnotation(classOf[FunctionAnnotation | ||
| .ConstantFields]) | ||
| val notConstantSet: FunctionAnnotation.ConstantFieldsExcept = scalaOp.getUserCodeAnnotation( | ||
| classOf[FunctionAnnotation.ConstantFieldsExcept]) | ||
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| if (notConstantSet != null && constantSet != null) { | ||
| throw new RuntimeException("Either ConstantFields or ConstantFieldsExcept can be specified, not both.") | ||
| } | ||
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| // extract notConstantSet from annotation | ||
| if (notConstantSet != null) { | ||
| val nonConstant: FieldSet = new FieldSet(notConstantSet.value: _*) | ||
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| for (element <- nonConstant.iterator()) { | ||
| if (properties.getForwardedField(element) != null) { | ||
| throw new RuntimeException("Field " + element + " is non constant and at the same time forwarded. This " + | ||
| "cannot happen.") | ||
| } | ||
| } | ||
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| for (i <- 0 until scalaOp.getUDF().getOutputLength) { | ||
| if (!nonConstant.contains(i)) { | ||
| properties.addForwardedField(i, i) | ||
| } | ||
| } | ||
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| } else if (constantSet != null) { | ||
| // extract constantSet from annotation | ||
| for (value <- constantSet.value) { | ||
| properties.addForwardedField(value, value) | ||
| } | ||
| } | ||
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| op.setSemanticProperties(properties) | ||
| } | ||
| } | ||
| } |
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