org.apache.flink.table.planner.functions.bridging

Class BridgingSqlFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.flink.table.planner.functions.bridging.BridgingSqlFunction

@Internal
public final class BridgingSqlFunction
extends org.apache.calcite.sql.SqlFunction

Bridges FunctionDefinition to Calcite's representation of a scalar or table function (either a system or user-defined function).

Field Summary

Fields inherited from class org.apache.calcite.sql.SqlOperator

kind, MDX_PRECEDENCE, NL

Method Summary

Modifier and Type	Method and Description
org.apache.flink.table.catalog.DataTypeFactory	getDataTypeFactory()
org.apache.flink.table.functions.FunctionDefinition	getDefinition()
Optional<org.apache.flink.table.functions.FunctionIdentifier>	getIdentifier()
List<String>	getParamNames()
org.apache.flink.table.planner.calcite.FlinkTypeFactory	getTypeFactory()
org.apache.flink.table.types.inference.TypeInference	getTypeInference()
boolean	isDeterministic()
static BridgingSqlFunction	of(org.apache.flink.table.catalog.DataTypeFactory dataTypeFactory, org.apache.flink.table.planner.calcite.FlinkTypeFactory typeFactory, org.apache.calcite.sql.SqlKind kind, org.apache.flink.table.functions.FunctionIdentifier identifier, org.apache.flink.table.functions.FunctionDefinition definition, org.apache.flink.table.types.inference.TypeInference typeInference) Creates an instance of a scalar or table function (either a system or user-defined function).
static BridgingSqlFunction	of(org.apache.flink.table.planner.calcite.FlinkContext context, org.apache.flink.table.planner.calcite.FlinkTypeFactory typeFactory, org.apache.flink.table.functions.FunctionIdentifier identifier, org.apache.flink.table.functions.FunctionDefinition definition) Creates an instance of a scalar or table function during translation.
static BridgingSqlFunction	of(org.apache.calcite.plan.RelOptCluster cluster, org.apache.flink.table.functions.FunctionIdentifier identifier, org.apache.flink.table.functions.FunctionDefinition definition) Creates an instance of a scalar or table function during translation.

Methods inherited from class org.apache.calcite.sql.SqlFunction

deriveType, getFunctionType, getNameAsId, getParamTypes, getSqlIdentifier, getSyntax, isQuantifierAllowed, unparse, validateCall, validateQuantifier

Methods inherited from class org.apache.calcite.sql.SqlOperator

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isAggregator, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

of

public static BridgingSqlFunction of(org.apache.flink.table.catalog.DataTypeFactory dataTypeFactory,
                                     org.apache.flink.table.planner.calcite.FlinkTypeFactory typeFactory,
                                     org.apache.calcite.sql.SqlKind kind,
                                     @Nullable
                                     org.apache.flink.table.functions.FunctionIdentifier identifier,
                                     org.apache.flink.table.functions.FunctionDefinition definition,
                                     org.apache.flink.table.types.inference.TypeInference typeInference)

Creates an instance of a scalar or table function (either a system or user-defined function).

Parameters:

dataTypeFactory - used for creating DataType

typeFactory - used for bridging to RelDataType

kind - commonly used SQL standard function; use SqlKind.OTHER_FUNCTION if this function cannot be mapped to a common function kind.

identifier - catalog identifier

definition - system or user-defined FunctionDefinition

typeInference - type inference logic

of

public static BridgingSqlFunction of(org.apache.flink.table.planner.calcite.FlinkContext context,
                                     org.apache.flink.table.planner.calcite.FlinkTypeFactory typeFactory,
                                     @Nullable
                                     org.apache.flink.table.functions.FunctionIdentifier identifier,
                                     org.apache.flink.table.functions.FunctionDefinition definition)

Creates an instance of a scalar or table function during translation.

of

public static BridgingSqlFunction of(org.apache.calcite.plan.RelOptCluster cluster,
                                     @Nullable
                                     org.apache.flink.table.functions.FunctionIdentifier identifier,
                                     org.apache.flink.table.functions.FunctionDefinition definition)

Creates an instance of a scalar or table function during translation.

getDataTypeFactory

public org.apache.flink.table.catalog.DataTypeFactory getDataTypeFactory()

getTypeFactory

public org.apache.flink.table.planner.calcite.FlinkTypeFactory getTypeFactory()

getIdentifier

public Optional<org.apache.flink.table.functions.FunctionIdentifier> getIdentifier()

getDefinition

public org.apache.flink.table.functions.FunctionDefinition getDefinition()

getTypeInference

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

getParamNames

public List<String> getParamNames()

Overrides:

getParamNames in class org.apache.calcite.sql.SqlFunction

isDeterministic

public boolean isDeterministic()

Overrides:

isDeterministic in class org.apache.calcite.sql.SqlOperator