org.apache.flink.table.planner.plan.utils

Class RexLiteralUtil

java.lang.Object

org.apache.flink.table.planner.plan.utils.RexLiteralUtil

@Internal
public class RexLiteralUtil
extends Object

Utilities to work with RexLiteral.

Method Summary

Modifier and Type	Method and Description
static Object	toFlinkInternalValue(Comparable<?> value, LogicalType valueType) Convert a value from Calcite's Comparable data structures to Flink internal data structures and also tries to be a bit flexible by accepting usual Java types such as String and boxed numerics.
static Tuple2<Object,LogicalType>	toFlinkInternalValue(org.apache.calcite.rex.RexLiteral literal) See toFlinkInternalValue(Comparable, LogicalType).

Methods inherited from class java.lang.Object

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

Method Detail

toFlinkInternalValue

public static Tuple2<Object,LogicalType> toFlinkInternalValue(org.apache.calcite.rex.RexLiteral literal)

See toFlinkInternalValue(Comparable, LogicalType).

toFlinkInternalValue

public static Object toFlinkInternalValue(Comparable<?> value,
                                          LogicalType valueType)

Convert a value from Calcite's Comparable data structures to Flink internal data structures and also tries to be a bit flexible by accepting usual Java types such as String and boxed numerics.

In case of symbol types, this function will return provided value, checking that it's an Enum.

This function is essentially like FlinkTypeFactory.toLogicalType(RelDataType) but for values.

Check RexLiteral.valueMatchesType(Comparable, SqlTypeName, boolean) for details on the Comparable data structures and RowData for details on Flink's internal data structures.

Parameters:

value - the value in Calcite's Comparable data structures

valueType - the type of the value

Returns:

the value in Flink's internal data structures

Throws:

IllegalArgumentException - in case the class of value does not match the expectations of valueType