Package org.apache.calcite.sql

Class SqlAsofJoin

java.lang.Object

org.apache.calcite.sql.SqlNode

org.apache.calcite.sql.SqlCall

org.apache.calcite.sql.SqlJoin

org.apache.calcite.sql.SqlAsofJoin

All Implemented Interfaces:

Cloneable

public class SqlAsofJoin
extends SqlJoin

Parse tree node representing a ASOF JOIN clause.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SqlAsofJoin.SqlAsofJoinOperator	Describes the syntax of the SQL ASOF JOIN operator.

Nested classes/interfaces inherited from class org.apache.calcite.sql.SqlJoin

SqlJoin.SqlJoinOperator

Field Summary

Fields inherited from class org.apache.calcite.sql.SqlJoin

OPERATOR

Fields inherited from class org.apache.calcite.sql.SqlNode

EMPTY_ARRAY, pos

Constructor Summary

Constructors

Constructor	Description
SqlAsofJoin(SqlParserPos pos, SqlNode left, SqlLiteral natural, SqlLiteral joinType, SqlNode right, SqlLiteral conditionType, @Nullable SqlNode condition, SqlNode matchCondition)

Method Summary

Modifier and Type	Method	Description
final SqlNode	getMatchCondition()	The match condition of the ASOF JOIN.
List<SqlNode>	getOperandList()	Returns the list of operands.
SqlOperator	getOperator()
void	setOperand(int i, @Nullable SqlNode operand)	Changes the value of an operand.
SqlString	toSqlString(UnaryOperator<SqlWriterConfig> transform)	Returns the SQL text of the tree of which this SqlNode is the root.

Methods inherited from class org.apache.calcite.sql.SqlJoin

getCondition, getConditionType, getConditionTypeNode, getJoinType, getJoinTypeNode, getKind, getLeft, getRight, isNatural, isNaturalNode, setLeft, setRight

Methods inherited from class org.apache.calcite.sql.SqlCall

accept, clone, equalsDeep, findValidOptions, getCallSignature, getFunctionQuantifier, getMonotonicity, isCountStar, isExpanded, operand, operandCount, unparse, validate

Methods inherited from class org.apache.calcite.sql.SqlNode

clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, getParserPosition, isA, toList, toList, toSqlString, toSqlString, toString, unparseWithParentheses, validateExpr

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

SqlAsofJoin

public SqlAsofJoin(SqlParserPos pos,
 SqlNode left,
 SqlLiteral natural,
 SqlLiteral joinType,
 SqlNode right,
 SqlLiteral conditionType,
 @Nullable SqlNode condition,
 SqlNode matchCondition)

Method Details

getOperandList

public List<SqlNode> getOperandList()

Description copied from class: SqlCall

Returns the list of operands. The set and order of operands is call-specific.

Note: the proper type would be List<@Nullable SqlNode>, however, it would trigger too many changes to the current codebase.

Overrides:

getOperandList in class SqlJoin

Returns:

the list of call operands, never null, the operands can be null

getOperator

public SqlOperator getOperator()

Overrides:

getOperator in class SqlJoin

setOperand

public void setOperand(int i,
 @Nullable SqlNode operand)

Description copied from class: SqlCall

Changes the value of an operand. Allows some rewrite by SqlValidator; use sparingly.

Overrides:

setOperand in class SqlJoin

Parameters:

i - Operand index

operand - Operand value

getMatchCondition

public final SqlNode getMatchCondition()

The match condition of the ASOF JOIN.

Returns:

The match condition of the ASOF join.

toSqlString

public SqlString toSqlString(UnaryOperator<SqlWriterConfig> transform)

Description copied from class: SqlNode

Returns the SQL text of the tree of which this SqlNode is the root.

Typical return values are:

• 'It''s a bird!'
• NULL
• 12.3
• DATE '1969-04-29'

Overrides:

toSqlString in class SqlJoin

Parameters:

transform - Transform that sets desired writer configuration