org.apache.flink.table.examples.java.functions

Class InternalRowMergerFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.ScalarFunction

org.apache.flink.table.examples.java.functions.InternalRowMergerFunction

All Implemented Interfaces:

Serializable, org.apache.flink.table.functions.FunctionDefinition

public final class InternalRowMergerFunction
extends org.apache.flink.table.functions.ScalarFunction

Merges two rows into a single row with unique field names.

The function uses a custom TypeInference and thus disables any of the default reflection-based logic. It returns internal data structures for both input and output types of the eval method.

For code readability, we might use some internal utility methods that should rarely change. Implementers can copy those if they don't want to rely on non-official API.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
InternalRowMergerFunction()

Method Summary

Modifier and Type	Method and Description
org.apache.flink.table.data.RowData	eval(org.apache.flink.table.data.RowData r1, org.apache.flink.table.data.RowData r2)
org.apache.flink.table.types.inference.TypeInference	getTypeInference(org.apache.flink.table.catalog.DataTypeFactory typeFactory)

Methods inherited from class org.apache.flink.table.functions.ScalarFunction

getKind, getParameterTypes, getResultType

Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction

close, functionIdentifier, open, toString

Methods inherited from class java.lang.Object

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

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

getRequirements, isDeterministic

Constructor Detail

InternalRowMergerFunction

public InternalRowMergerFunction()

Method Detail

getTypeInference

public org.apache.flink.table.types.inference.TypeInference getTypeInference(org.apache.flink.table.catalog.DataTypeFactory typeFactory)

Specified by:

getTypeInference in interface org.apache.flink.table.functions.FunctionDefinition

Overrides:

getTypeInference in class org.apache.flink.table.functions.ScalarFunction

eval

public org.apache.flink.table.data.RowData eval(org.apache.flink.table.data.RowData r1,
                                                org.apache.flink.table.data.RowData r2)