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[FLINK-12017][table-planner-blink] Support translation from Rank/Dedu…
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...k-table-planner-blink/src/main/java/org/apache/flink/table/plan/util/KeySelectorUtil.java
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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. | ||
*/ | ||
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package org.apache.flink.table.plan.util; | ||
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import org.apache.flink.table.api.TableConfig; | ||
import org.apache.flink.table.codegen.CodeGeneratorContext; | ||
import org.apache.flink.table.codegen.ProjectionCodeGenerator; | ||
import org.apache.flink.table.generated.GeneratedProjection; | ||
import org.apache.flink.table.runtime.keySelector.BaseRowKeySelector; | ||
import org.apache.flink.table.runtime.keySelector.BinaryRowKeySelector; | ||
import org.apache.flink.table.runtime.keySelector.NullBinaryRowKeySelector; | ||
import org.apache.flink.table.type.InternalType; | ||
import org.apache.flink.table.type.RowType; | ||
import org.apache.flink.table.typeutils.BaseRowSerializer; | ||
import org.apache.flink.table.typeutils.BaseRowTypeInfo; | ||
import org.apache.flink.table.typeutils.TypeCheckUtils; | ||
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/** | ||
* Utility for KeySelector. | ||
*/ | ||
public class KeySelectorUtil { | ||
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/** | ||
* Create a BaseRowKeySelector to extract keys from DataStream which type is BaseRowTypeInfo. | ||
* | ||
* @param keyFields key fields | ||
* @param rowType type of DataStream to extract keys | ||
* | ||
* @return the BaseRowKeySelector to extract keys from DataStream which type is BaseRowTypeInfo. | ||
*/ | ||
public static BaseRowKeySelector getBaseRowSelector(int[] keyFields, BaseRowTypeInfo rowType) { | ||
if (keyFields.length > 0) { | ||
InternalType[] inputFieldTypes = rowType.getInternalTypes(); | ||
String[] inputFieldNames = rowType.getFieldNames(); | ||
InternalType[] keyFieldTypes = new InternalType[keyFields.length]; | ||
String[] keyFieldNames = new String[keyFields.length]; | ||
for (int i = 0; i < keyFields.length; ++i) { | ||
keyFieldTypes[i] = inputFieldTypes[keyFields[i]]; | ||
keyFieldNames[i] = inputFieldNames[keyFields[i]]; | ||
} | ||
RowType returnType = new RowType(keyFieldTypes, keyFieldNames); | ||
RowType inputType = new RowType(inputFieldTypes, rowType.getFieldNames()); | ||
GeneratedProjection generatedProjection = ProjectionCodeGenerator.generateProjection( | ||
CodeGeneratorContext.apply(new TableConfig()), | ||
BaseRowSerializer.class.getSimpleName(), inputType, returnType, keyFields); | ||
BaseRowTypeInfo keyRowType = returnType.toTypeInfo(); | ||
// check if type implements proper equals/hashCode | ||
TypeCheckUtils.validateEqualsHashCode("grouping", keyRowType); | ||
return new BinaryRowKeySelector(keyRowType, generatedProjection); | ||
} else { | ||
return new NullBinaryRowKeySelector(); | ||
} | ||
} | ||
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} |
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148 changes: 148 additions & 0 deletions
148
...-planner-blink/src/main/scala/org/apache/flink/table/codegen/EqualiserCodeGenerator.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.table.codegen | ||
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import org.apache.flink.table.api.TableConfig | ||
import org.apache.flink.table.codegen.CodeGenUtils._ | ||
import org.apache.flink.table.codegen.Indenter.toISC | ||
import org.apache.flink.table.dataformat.{BaseRow, BinaryRow} | ||
import org.apache.flink.table.generated.{GeneratedRecordEqualiser, RecordEqualiser} | ||
import org.apache.flink.table.`type`.{DateType, InternalType, PrimitiveType, RowType, TimeType, TimestampType} | ||
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class EqualiserCodeGenerator(fieldTypes: Seq[InternalType]) { | ||
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private val BASE_ROW = className[BaseRow] | ||
private val BINARY_ROW = className[BinaryRow] | ||
private val RECORD_EQUALISER = className[RecordEqualiser] | ||
private val LEFT_INPUT = "left" | ||
private val RIGHT_INPUT = "right" | ||
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def generateRecordEqualiser(name: String): GeneratedRecordEqualiser = { | ||
// ignore time zone | ||
val ctx = CodeGeneratorContext(new TableConfig) | ||
val className = newName(name) | ||
val header = | ||
s""" | ||
|if ($LEFT_INPUT.getHeader() != $RIGHT_INPUT.getHeader()) { | ||
| return false; | ||
|} | ||
""".stripMargin | ||
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val codes = for (i <- fieldTypes.indices) yield { | ||
val fieldType = fieldTypes(i) | ||
val fieldTypeTerm = primitiveTypeTermForType(fieldType) | ||
val result = s"cmp$i" | ||
val leftNullTerm = "leftIsNull$" + i | ||
val rightNullTerm = "rightIsNull$" + i | ||
val leftFieldTerm = "leftField$" + i | ||
val rightFieldTerm = "rightField$" + i | ||
val equalsCode = if (isInternalPrimitive(fieldType)) { | ||
s"$leftFieldTerm == $rightFieldTerm" | ||
} else if (isBaseRow(fieldType)) { | ||
val equaliserGenerator = | ||
new EqualiserCodeGenerator(fieldType.asInstanceOf[RowType].getFieldTypes) | ||
val generatedEqualiser = equaliserGenerator | ||
.generateRecordEqualiser("field$" + i + "GeneratedEqualiser") | ||
val generatedEqualiserTerm = ctx.addReusableObject( | ||
generatedEqualiser, "field$" + i + "GeneratedEqualiser") | ||
val equaliserTypeTerm = classOf[RecordEqualiser].getCanonicalName | ||
val equaliserTerm = newName("equaliser") | ||
ctx.addReusableMember(s"private $equaliserTypeTerm $equaliserTerm = null;") | ||
ctx.addReusableInitStatement( | ||
s""" | ||
|$equaliserTerm = ($equaliserTypeTerm) | ||
| $generatedEqualiserTerm.newInstance(Thread.currentThread().getContextClassLoader()); | ||
|""".stripMargin) | ||
s"$equaliserTerm.equalsWithoutHeader($leftFieldTerm, $rightFieldTerm)" | ||
} else { | ||
s"$leftFieldTerm.equals($rightFieldTerm)" | ||
} | ||
val leftReadCode = baseRowFieldReadAccess(ctx, i, LEFT_INPUT, fieldType) | ||
val rightReadCode = baseRowFieldReadAccess(ctx, i, RIGHT_INPUT, fieldType) | ||
s""" | ||
|boolean $leftNullTerm = $LEFT_INPUT.isNullAt($i); | ||
|boolean $rightNullTerm = $RIGHT_INPUT.isNullAt($i); | ||
|boolean $result; | ||
|if ($leftNullTerm && $rightNullTerm) { | ||
| $result = true; | ||
|} else if ($leftNullTerm || $rightNullTerm) { | ||
| $result = false; | ||
|} else { | ||
| $fieldTypeTerm $leftFieldTerm = $leftReadCode; | ||
| $fieldTypeTerm $rightFieldTerm = $rightReadCode; | ||
| $result = $equalsCode; | ||
|} | ||
|if (!$result) { | ||
| return false; | ||
|} | ||
""".stripMargin | ||
} | ||
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val functionCode = | ||
j""" | ||
public final class $className implements $RECORD_EQUALISER { | ||
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${ctx.reuseMemberCode()} | ||
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public $className(Object[] references) throws Exception { | ||
${ctx.reuseInitCode()} | ||
} | ||
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@Override | ||
public boolean equals($BASE_ROW $LEFT_INPUT, $BASE_ROW $RIGHT_INPUT) { | ||
if ($LEFT_INPUT instanceof $BINARY_ROW && $RIGHT_INPUT instanceof $BINARY_ROW) { | ||
return $LEFT_INPUT.equals($RIGHT_INPUT); | ||
} else { | ||
$header | ||
${ctx.reuseLocalVariableCode()} | ||
${codes.mkString("\n")} | ||
return true; | ||
} | ||
} | ||
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@Override | ||
public boolean equalsWithoutHeader($BASE_ROW $LEFT_INPUT, $BASE_ROW $RIGHT_INPUT) { | ||
if ($LEFT_INPUT instanceof $BINARY_ROW && $RIGHT_INPUT instanceof $BINARY_ROW) { | ||
return (($BINARY_ROW)$LEFT_INPUT).equalsWithoutHeader((($BINARY_ROW)$RIGHT_INPUT)); | ||
} else { | ||
${ctx.reuseLocalVariableCode()} | ||
${codes.mkString("\n")} | ||
return true; | ||
} | ||
} | ||
} | ||
""".stripMargin | ||
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new GeneratedRecordEqualiser(className, functionCode, ctx.references.toArray) | ||
} | ||
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private def isInternalPrimitive(t: InternalType): Boolean = t match { | ||
case _: PrimitiveType => true | ||
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case _: DateType => true | ||
case TimeType.INSTANCE => true | ||
case _: TimestampType => true | ||
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case _ => false | ||
} | ||
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private def isBaseRow(t: InternalType): Boolean = t match { | ||
case _: RowType => true | ||
case _ => false | ||
} | ||
} |
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