接口的使用
org.apache.flink.table.runtime.keyselector.RowDataKeySelector

使用RowDataKeySelector的程序包

程序包	说明
org.apache.flink.table.runtime.keyselector
org.apache.flink.table.runtime.operators.aggregate.window
org.apache.flink.table.runtime.operators.rank
org.apache.flink.table.runtime.operators.rank.window
org.apache.flink.table.runtime.operators.rank.window.combines

org.apache.flink.table.runtime.keyselector中RowDataKeySelector的使用

实现RowDataKeySelector的org.apache.flink.table.runtime.keyselector中的类

限定符和类型	类和说明
class	BinaryRowDataKeySelector A KeySelector which will extract key from RowData.
class	EmptyRowDataKeySelector A utility class which key is always empty no matter what the input row is.

org.apache.flink.table.runtime.operators.aggregate.window中RowDataKeySelector的使用

参数类型为RowDataKeySelector的org.apache.flink.table.runtime.operators.aggregate.window中的构造器

构造器和说明
LocalSlicingWindowAggOperator(RowDataKeySelector keySelector, SliceAssigner sliceAssigner, WindowBuffer.LocalFactory windowBufferFactory, java.time.ZoneId shiftTimezone)

org.apache.flink.table.runtime.operators.rank中RowDataKeySelector的使用

参数类型为RowDataKeySelector的org.apache.flink.table.runtime.operators.rank中的构造器

构造器和说明
AppendOnlyFirstNFunction(org.apache.flink.api.common.state.StateTtlConfig ttlConfig, InternalTypeInfo<org.apache.flink.table.data.RowData> inputRowType, GeneratedRecordComparator sortKeyGeneratedRecordComparator, RowDataKeySelector sortKeySelector, RankType rankType, RankRange rankRange, boolean generateUpdateBefore, boolean outputRankNumber)
AppendOnlyTopNFunction(org.apache.flink.api.common.state.StateTtlConfig ttlConfig, InternalTypeInfo<org.apache.flink.table.data.RowData> inputRowType, GeneratedRecordComparator sortKeyGeneratedRecordComparator, RowDataKeySelector sortKeySelector, RankType rankType, RankRange rankRange, boolean generateUpdateBefore, boolean outputRankNumber, long cacheSize)
FastTop1Function(org.apache.flink.api.common.state.StateTtlConfig ttlConfig, InternalTypeInfo<org.apache.flink.table.data.RowData> inputRowType, GeneratedRecordComparator generatedSortKeyComparator, RowDataKeySelector sortKeySelector, RankType rankType, RankRange rankRange, boolean generateUpdateBefore, boolean outputRankNumber, long cacheSize)
RetractableTopNFunction(org.apache.flink.api.common.state.StateTtlConfig ttlConfig, InternalTypeInfo<org.apache.flink.table.data.RowData> inputRowType, ComparableRecordComparator comparableRecordComparator, RowDataKeySelector sortKeySelector, RankType rankType, RankRange rankRange, GeneratedRecordEqualiser generatedEqualiser, boolean generateUpdateBefore, boolean outputRankNumber)
UpdatableTopNFunction(org.apache.flink.api.common.state.StateTtlConfig ttlConfig, InternalTypeInfo<org.apache.flink.table.data.RowData> inputRowType, RowDataKeySelector rowKeySelector, GeneratedRecordComparator generatedRecordComparator, RowDataKeySelector sortKeySelector, RankType rankType, RankRange rankRange, boolean generateUpdateBefore, boolean outputRankNumber, long cacheSize)

org.apache.flink.table.runtime.operators.rank.window中RowDataKeySelector的使用

参数类型为RowDataKeySelector的org.apache.flink.table.runtime.operators.rank.window中的方法

限定符和类型	方法和说明
WindowRankOperatorBuilder	WindowRankOperatorBuilder.sortKeySelector(RowDataKeySelector sortKeySelector)

org.apache.flink.table.runtime.operators.rank.window.combines中RowDataKeySelector的使用

参数类型为RowDataKeySelector的org.apache.flink.table.runtime.operators.rank.window.combines中的构造器

构造器和说明
Factory(GeneratedRecordComparator genSortKeyComparator, RowDataKeySelector sortKeySelector, org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> recordSerializer, long topN)