public static class SqlJoin.SqlJoinOperator extends SqlOperator
SqlJoinOperator
describes the syntax of the SQL
JOIN
operator. Since there is only one such operator, this class is
almost certainly a singleton.Modifier and Type | Field and Description |
---|---|
private static SqlWriter.FrameType |
FRAME_TYPE |
kind, MDX_PRECEDENCE, NL
Modifier | Constructor and Description |
---|---|
private |
SqlJoinOperator() |
Modifier and Type | Method and Description |
---|---|
SqlCall |
createCall(SqlLiteral functionQualifier,
SqlParserPos pos,
SqlNode... operands)
Creates a call to this operand with an array of operands.
|
SqlSyntax |
getSyntax()
Returns the syntactic type of this operator, never null.
|
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.
|
acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, deriveType, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getNameAsId, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, leftPrec, needsSpace, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateCall, validateOperands, validRexOperands
private static final SqlWriter.FrameType FRAME_TYPE
public SqlSyntax getSyntax()
SqlOperator
getSyntax
in class SqlOperator
public SqlCall createCall(SqlLiteral functionQualifier, SqlParserPos pos, SqlNode... operands)
SqlOperator
The position of the resulting call is the union of the
pos
and the positions of all of the operands.
createCall
in class SqlOperator
functionQualifier
- function qualifier (e.g. "DISTINCT"), may bepos
- parser position of the identifier of the calloperands
- array of operandspublic void unparse(SqlWriter writer, SqlCall call, int leftPrec, int rightPrec)
SqlOperator
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)
.
unparse
in class SqlOperator
Copyright © 2012–2019 The Apache Software Foundation. All rights reserved.