Package org.apache.calcite.sql.fun
Class SqlTranslate3Function
- java.lang.Object
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- org.apache.calcite.sql.SqlOperator
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- org.apache.calcite.sql.SqlFunction
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- org.apache.calcite.sql.fun.SqlTranslate3Function
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public class SqlTranslate3Function extends SqlFunction
Definition of the "TRANSLATE" built-in SQL function that takes 3 arguments.Based on Oracle's
TRANSLATE
function, it is commonly called "TRANSLATE3" to distinguish it from the standard SQL functionSqlStdOperatorTable.TRANSLATE
that takes 2 arguments and has an entirely different purpose.
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Field Summary
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Fields inherited from class org.apache.calcite.sql.SqlOperator
kind, MDX_PRECEDENCE, NL
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Constructor Summary
Constructors Constructor Description SqlTranslate3Function()
Creates the SqlTranslate3Function.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
getSignatureTemplate(int operandsCount)
Returns a template describing how the operator signature is to be built.void
unparse(SqlWriter writer, SqlCall call, int leftPrec, int rightPrec)
Writes a SQL representation of a call to this operator to a writer, including parentheses if the operators on either side are of greater precedence.-
Methods inherited from class org.apache.calcite.sql.SqlFunction
deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, getSyntax, isQuantifierAllowed, validateCall, validateQuantifier
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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, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, leftPrec, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands
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Method Detail
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unparse
public void unparse(SqlWriter writer, SqlCall call, int leftPrec, int rightPrec)
Description copied from class:SqlOperator
Writes a SQL representation of a call to this operator to a writer, including parentheses if the operators on either side are of greater precedence.The default implementation of this method delegates to
SqlSyntax.unparse(org.apache.calcite.sql.SqlWriter, org.apache.calcite.sql.SqlOperator, org.apache.calcite.sql.SqlCall, int, int)
.- Overrides:
unparse
in classSqlFunction
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getSignatureTemplate
public java.lang.String getSignatureTemplate(int operandsCount)
Description copied from class:SqlOperator
Returns a template describing how the operator signature is to be built. E.g for the binary + operator the template looks like "{1} {0} {2}" {0} is the operator, subsequent numbers are operands.- Overrides:
getSignatureTemplate
in classSqlOperator
- Parameters:
operandsCount
- is used with functions that can take a variable number of operands- Returns:
- signature template, or null to indicate that a default template will suffice
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