public class FamilyOperandTypeChecker extends java.lang.Object implements SqlSingleOperandTypeChecker
SqlOperandTypeChecker.Consistency
Modifier and Type | Field and Description |
---|---|
protected com.google.common.collect.ImmutableList<SqlTypeFamily> |
families |
protected java.util.function.Predicate<java.lang.Integer> |
optional |
Constructor and Description |
---|
FamilyOperandTypeChecker(java.util.List<SqlTypeFamily> families,
java.util.function.Predicate<java.lang.Integer> optional)
Package private.
|
Modifier and Type | Method and Description |
---|---|
boolean |
checkOperandTypes(SqlCallBinding callBinding,
boolean throwOnFailure)
Checks the types of all operands to an operator call.
|
boolean |
checkSingleOperandType(SqlCallBinding callBinding,
SqlNode node,
int iFormalOperand,
boolean throwOnFailure)
Checks the type of a single operand against a particular ordinal position
within a formal operator signature.
|
java.lang.String |
getAllowedSignatures(SqlOperator op,
java.lang.String opName)
Returns a string describing the allowed formal signatures of a call, e.g.
|
SqlOperandTypeChecker.Consistency |
getConsistency()
Returns the strategy for making the arguments have consistency types.
|
SqlOperandCountRange |
getOperandCountRange() |
boolean |
isOptional(int i)
Returns whether the
i th operand is optional. |
protected final com.google.common.collect.ImmutableList<SqlTypeFamily> families
protected final java.util.function.Predicate<java.lang.Integer> optional
FamilyOperandTypeChecker(java.util.List<SqlTypeFamily> families, java.util.function.Predicate<java.lang.Integer> optional)
OperandTypes.family(org.apache.calcite.sql.type.SqlTypeFamily...)
.public boolean isOptional(int i)
SqlOperandTypeChecker
i
th operand is optional.isOptional
in interface SqlOperandTypeChecker
public boolean checkSingleOperandType(SqlCallBinding callBinding, SqlNode node, int iFormalOperand, boolean throwOnFailure)
SqlSingleOperandTypeChecker
For example, when validating the actual call
C(X, Y, Z)
the strategy for validating the operand Z might involve checking its
type against the formal signature OP(W). In this case,
iFormalOperand
would be zero, even though the position of Z
within call C is two.
checkSingleOperandType
in interface SqlSingleOperandTypeChecker
callBinding
- description of the call being checked; this is only
provided for context when throwing an exception; the
implementation should NOT examine the
operands of the call as part of the checknode
- the actual operand to be checkediFormalOperand
- the 0-based formal operand ordinalthrowOnFailure
- whether to throw an exception if check fails
(otherwise returns false in that case)public boolean checkOperandTypes(SqlCallBinding callBinding, boolean throwOnFailure)
SqlOperandTypeChecker
checkOperandTypes
in interface SqlOperandTypeChecker
callBinding
- description of the call to be checkedthrowOnFailure
- whether to throw an exception if check fails
(otherwise returns false in that case)public SqlOperandCountRange getOperandCountRange()
getOperandCountRange
in interface SqlOperandTypeChecker
public java.lang.String getAllowedSignatures(SqlOperator op, java.lang.String opName)
SqlOperandTypeChecker
getAllowedSignatures
in interface SqlOperandTypeChecker
op
- the operator being checkedopName
- name to use for the operator in case of aliasingpublic SqlOperandTypeChecker.Consistency getConsistency()
SqlOperandTypeChecker
getConsistency
in interface SqlOperandTypeChecker
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