Package org.apache.flink.table.runtime.functions.table

Class UnnestRowsFunction

java.lang.Object
org.apache.flink.table.runtime.functions.BuiltInSpecializedFunction
org.apache.flink.table.runtime.functions.table.UnnestRowsFunction
All Implemented Interfaces:
org.apache.flink.table.functions.FunctionDefinition, org.apache.flink.table.functions.SpecializedFunction
@Internal public class UnnestRowsFunction extends BuiltInSpecializedFunction
Flattens ARRAY, MAP, and MULTISET using a table function. It does this by another level of specialization using a subclass of UnnestRowsFunction.UnnestTableFunctionBase.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static final class 
    UnnestRowsFunction.CollectionUnnestTableFunction
    Table function that unwraps the elements of a collection (array or multiset).
    static final class 
    UnnestRowsFunction.MapUnnestTableFunction
    Table function that unwraps the elements of a map.

    Nested classes/interfaces inherited from interface org.apache.flink.table.functions.SpecializedFunction

    org.apache.flink.table.functions.SpecializedFunction.ExpressionEvaluator, org.apache.flink.table.functions.SpecializedFunction.ExpressionEvaluatorFactory, org.apache.flink.table.functions.SpecializedFunction.SpecializedContext

  • Constructor Summary

    Constructors
    Constructor
    Description
    UnnestRowsFunction()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static org.apache.flink.table.types.logical.LogicalType
    getUnnestedType(org.apache.flink.table.types.logical.LogicalType logicalType)
     
    org.apache.flink.table.functions.UserDefinedFunction
    specialize(org.apache.flink.table.functions.SpecializedFunction.SpecializedContext context)
     

    Methods inherited from class org.apache.flink.table.runtime.functions.BuiltInSpecializedFunction

    getKind, getRequirements, getTypeInference, isDeterministic

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition

    supportsConstantFolding

  • Constructor Details

    • UnnestRowsFunction

      public UnnestRowsFunction()

  • Method Details

    • specialize

      public org.apache.flink.table.functions.UserDefinedFunction specialize(org.apache.flink.table.functions.SpecializedFunction.SpecializedContext context)

    • getUnnestedType

      public static org.apache.flink.table.types.logical.LogicalType getUnnestedType(org.apache.flink.table.types.logical.LogicalType logicalType)