Package org.apache.calcite.sql.fun
Class SqlNewOperator
- java.lang.Object
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- org.apache.calcite.sql.SqlOperator
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- org.apache.calcite.sql.SqlPrefixOperator
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- org.apache.calcite.sql.fun.SqlNewOperator
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public class SqlNewOperator extends SqlPrefixOperator
SqlNewOperator represents an SQLnew specification
such asNEW UDT(1, 2)
. When used in an SqlCall, SqlNewOperator takes a single operand, which is an invocation of the constructor method; but when used in a RexCall, the operands are the initial values to be used for the new instance.
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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 SqlNewOperator()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
requiresDecimalExpansion()
Method to check if call requires expansion when it has decimal operands.SqlNode
rewriteCall(SqlValidator validator, SqlCall call)
Rewrites a call to this operator.-
Methods inherited from class org.apache.calcite.sql.SqlPrefixOperator
adjustType, getMonotonicity, getSignatureTemplate, getSyntax, validRexOperands
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Methods inherited from class org.apache.calcite.sql.SqlOperator
acceptCall, acceptCall, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, deriveType, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getNameAsId, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, leftPrec, preValidateCall, requiresOrder, requiresOver, rightPrec, toString, unparse, unparseListClause, unparseListClause, validateCall, validateOperands
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Method Detail
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rewriteCall
public SqlNode rewriteCall(SqlValidator validator, SqlCall call)
Description copied from class:SqlOperator
Rewrites a call to this operator. Some operators are implemented as trivial rewrites (e.g. NULLIF becomes CASE). However, we don't do this at createCall time because we want to preserve the original SQL syntax as much as possible; instead, we do this before the call is validated (so the trivial operator doesn't need its own implementation of type derivation methods). The default implementation is to just return the original call without any rewrite.- Overrides:
rewriteCall
in classSqlOperator
- Parameters:
validator
- Validatorcall
- Call to be rewritten- Returns:
- rewritten call
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requiresDecimalExpansion
public boolean requiresDecimalExpansion()
Description copied from class:SqlOperator
Method to check if call requires expansion when it has decimal operands. The default implementation is to return true.- Overrides:
requiresDecimalExpansion
in classSqlOperator
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