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

使用BaseRowKeySelector的程序包

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

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

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

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

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

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

构造器和说明
AppendOnlyTopNFunction(long minRetentionTime, long maxRetentionTime, BaseRowTypeInfo inputRowType, GeneratedRecordComparator sortKeyGeneratedRecordComparator, BaseRowKeySelector sortKeySelector, RankType rankType, RankRange rankRange, boolean generateRetraction, boolean outputRankNumber, long cacheSize)
RetractableTopNFunction(long minRetentionTime, long maxRetentionTime, BaseRowTypeInfo inputRowType, GeneratedRecordComparator generatedRecordComparator, BaseRowKeySelector sortKeySelector, RankType rankType, RankRange rankRange, GeneratedRecordEqualiser generatedEqualiser, boolean generateRetraction, boolean outputRankNumber)
UpdatableTopNFunction(long minRetentionTime, long maxRetentionTime, BaseRowTypeInfo inputRowType, BaseRowKeySelector rowKeySelector, GeneratedRecordComparator generatedRecordComparator, BaseRowKeySelector sortKeySelector, RankType rankType, RankRange rankRange, boolean generateRetraction, boolean outputRankNumber, long cacheSize)