org.apache.calcite.sql.validate

Class SqlUserDefinedFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.validate.SqlUserDefinedFunction

Direct Known Subclasses:

SqlUserDefinedTableFunction

public class SqlUserDefinedFunction
extends SqlFunction

User-defined scalar function.

Created by the validator, after resolving a function call to a function defined in a Calcite schema.

Field Summary

Fields

Modifier and Type	Field and Description
Function	function

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Modifier	Constructor and Description
	SqlUserDefinedFunction(SqlIdentifier opName, SqlReturnTypeInference returnTypeInference, SqlOperandTypeInference operandTypeInference, SqlOperandTypeChecker operandTypeChecker, List<RelDataType> paramTypes, Function function) Creates a SqlUserDefinedFunction.
protected	SqlUserDefinedFunction(SqlIdentifier opName, SqlReturnTypeInference returnTypeInference, SqlOperandTypeInference operandTypeInference, SqlOperandTypeChecker operandTypeChecker, List<RelDataType> paramTypes, Function function, SqlFunctionCategory category) Constructor used internally and by derived classes.

Method Summary

Modifier and Type	Method and Description
Function	getFunction() Returns function that implements given operator call.
List<String>	getParamNames() Returns a list of parameter names.

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, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, 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

Field Detail

function

public final Function function

Constructor Detail

SqlUserDefinedFunction

public SqlUserDefinedFunction(SqlIdentifier opName,
                              SqlReturnTypeInference returnTypeInference,
                              SqlOperandTypeInference operandTypeInference,
                              SqlOperandTypeChecker operandTypeChecker,
                              List<RelDataType> paramTypes,
                              Function function)

Creates a SqlUserDefinedFunction.

SqlUserDefinedFunction

protected SqlUserDefinedFunction(SqlIdentifier opName,
                                 SqlReturnTypeInference returnTypeInference,
                                 SqlOperandTypeInference operandTypeInference,
                                 SqlOperandTypeChecker operandTypeChecker,
                                 List<RelDataType> paramTypes,
                                 Function function,
                                 SqlFunctionCategory category)

Constructor used internally and by derived classes.

Method Detail

getFunction

public Function getFunction()

Returns function that implements given operator call.

Returns:

function that implements given operator call

getParamNames

public List<String> getParamNames()

Description copied from class: SqlFunction

Returns a list of parameter names.

The default implementation returns [arg0, arg1, ..., argN].

Overrides:

getParamNames in class SqlFunction