org.apache.calcite.sql.fun

类 SqlDotOperator

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlSpecialOperator

org.apache.calcite.sql.fun.SqlDotOperator

public class SqlDotOperator
extends org.apache.calcite.sql.SqlSpecialOperator

The dot operator ., used to access a field of a record. For example, a.b.

This class was copied over from Calcite to fix the derived type. If the ROW is nullable force the accessed field to be nullable as well.

嵌套类概要

从类继承的嵌套类/接口 org.apache.calcite.sql.SqlSpecialOperator

org.apache.calcite.sql.SqlSpecialOperator.ReduceResult, org.apache.calcite.sql.SqlSpecialOperator.TokenSequence

字段概要

从类继承的字段 org.apache.calcite.sql.SqlOperator

kind, MDX_PRECEDENCE, NL

方法概要

限定符和类型	方法和说明
<R> void	acceptCall(org.apache.calcite.sql.util.SqlVisitor<R> visitor, org.apache.calcite.sql.SqlCall call, boolean onlyExpressions, org.apache.calcite.sql.util.SqlBasicVisitor.ArgHandler<R> argHandler)
boolean	checkOperandTypes(org.apache.calcite.sql.SqlCallBinding callBinding, boolean throwOnFailure)
org.apache.calcite.rel.type.RelDataType	deriveType(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.sql.validate.SqlValidatorScope scope, org.apache.calcite.sql.SqlCall call)
String	getAllowedSignatures(String name)
org.apache.calcite.sql.SqlOperandCountRange	getOperandCountRange()
org.apache.calcite.rel.type.RelDataType	inferReturnType(org.apache.calcite.sql.SqlOperatorBinding opBinding)
org.apache.calcite.sql.SqlSpecialOperator.ReduceResult	reduceExpr(int ordinal, org.apache.calcite.sql.SqlSpecialOperator.TokenSequence list)
void	unparse(org.apache.calcite.sql.SqlWriter writer, org.apache.calcite.sql.SqlCall call, int leftPrec, int rightPrec)
void	validateCall(org.apache.calcite.sql.SqlCall call, org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.sql.validate.SqlValidatorScope scope, org.apache.calcite.sql.validate.SqlValidatorScope operandScope)
boolean	validRexOperands(int count, org.apache.calcite.util.Litmus litmus)

从类继承的方法 org.apache.calcite.sql.SqlSpecialOperator

getSyntax

从类继承的方法 org.apache.calcite.sql.SqlOperator

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

从类继承的方法 java.lang.Object

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

方法详细资料

reduceExpr

public org.apache.calcite.sql.SqlSpecialOperator.ReduceResult reduceExpr(int ordinal,
                                                                         org.apache.calcite.sql.SqlSpecialOperator.TokenSequence list)

覆盖:

reduceExpr 在类中 org.apache.calcite.sql.SqlSpecialOperator

unparse

public void unparse(org.apache.calcite.sql.SqlWriter writer,
                    org.apache.calcite.sql.SqlCall call,
                    int leftPrec,
                    int rightPrec)

覆盖:

unparse 在类中 org.apache.calcite.sql.SqlOperator

getOperandCountRange

public org.apache.calcite.sql.SqlOperandCountRange getOperandCountRange()

覆盖:

getOperandCountRange 在类中 org.apache.calcite.sql.SqlOperator

acceptCall

public <R> void acceptCall(org.apache.calcite.sql.util.SqlVisitor<R> visitor,
                           org.apache.calcite.sql.SqlCall call,
                           boolean onlyExpressions,
                           org.apache.calcite.sql.util.SqlBasicVisitor.ArgHandler<R> argHandler)

覆盖:

acceptCall 在类中 org.apache.calcite.sql.SqlOperator

deriveType

public org.apache.calcite.rel.type.RelDataType deriveType(org.apache.calcite.sql.validate.SqlValidator validator,
                                                          org.apache.calcite.sql.validate.SqlValidatorScope scope,
                                                          org.apache.calcite.sql.SqlCall call)

覆盖:

deriveType 在类中 org.apache.calcite.sql.SqlOperator

validateCall

public void validateCall(org.apache.calcite.sql.SqlCall call,
                         org.apache.calcite.sql.validate.SqlValidator validator,
                         org.apache.calcite.sql.validate.SqlValidatorScope scope,
                         org.apache.calcite.sql.validate.SqlValidatorScope operandScope)

覆盖:

validateCall 在类中 org.apache.calcite.sql.SqlOperator

checkOperandTypes

public boolean checkOperandTypes(org.apache.calcite.sql.SqlCallBinding callBinding,
                                 boolean throwOnFailure)

覆盖:

checkOperandTypes 在类中 org.apache.calcite.sql.SqlOperator

validRexOperands

public boolean validRexOperands(int count,
                                org.apache.calcite.util.Litmus litmus)

覆盖:

validRexOperands 在类中 org.apache.calcite.sql.SqlOperator

getAllowedSignatures

public String getAllowedSignatures(String name)

覆盖:

getAllowedSignatures 在类中 org.apache.calcite.sql.SqlOperator

inferReturnType

public org.apache.calcite.rel.type.RelDataType inferReturnType(org.apache.calcite.sql.SqlOperatorBinding opBinding)

覆盖:

inferReturnType 在类中 org.apache.calcite.sql.SqlOperator