Class SqlMatchRecognize
- All Implemented Interfaces:
Cloneable
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Nested Class Summary
Modifier and TypeClassDescriptionstatic enum
Options forAFTER MATCH
clause.static enum
Options forROWS PER MATCH
.static class
An operator describing a MATCH_RECOGNIZE specification. -
Field Summary
Modifier and TypeFieldDescriptionstatic final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final SqlPrefixOperator
static final SqlPrefixOperator
Fields inherited from class org.apache.calcite.sql.SqlNode
EMPTY_ARRAY, pos
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Constructor Summary
ConstructorDescriptionSqlMatchRecognize
(SqlParserPos pos, SqlNode tableRef, SqlNode pattern, SqlLiteral strictStart, SqlLiteral strictEnd, SqlNodeList patternDefList, SqlNodeList measureList, @Nullable SqlNode after, SqlNodeList subsetList, @Nullable SqlLiteral rowsPerMatch, SqlNodeList partitionList, SqlNodeList orderList, @Nullable SqlLiteral interval) Creates a SqlMatchRecognize. -
Method Summary
Modifier and TypeMethodDescription@Nullable SqlNode
getAfter()
@Nullable SqlLiteral
getKind()
Returns the type of node this is, orSqlKind.OTHER
if it's nothing special.Returns the list of operands.@Nullable SqlLiteral
void
setOperand
(int i, @Nullable SqlNode operand) Changes the value of an operand.void
Writes a SQL representation of this node to a writer.void
validate
(SqlValidator validator, SqlValidatorScope scope) Validates this call.Methods inherited from class org.apache.calcite.sql.SqlCall
accept, clone, equalsDeep, findValidOptions, getCallSignature, getFunctionQuantifier, getMonotonicity, isCountStar, isExpanded, operand, operandCount
Methods inherited from class org.apache.calcite.sql.SqlNode
clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, getParserPosition, isA, toList, toList, toSqlString, toSqlString, toSqlString, toString, unparseWithParentheses, validateExpr
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Field Details
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OPERAND_TABLE_REF
public static final int OPERAND_TABLE_REF- See Also:
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OPERAND_PATTERN
public static final int OPERAND_PATTERN- See Also:
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OPERAND_STRICT_START
public static final int OPERAND_STRICT_START- See Also:
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OPERAND_STRICT_END
public static final int OPERAND_STRICT_END- See Also:
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OPERAND_PATTERN_DEFINES
public static final int OPERAND_PATTERN_DEFINES- See Also:
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OPERAND_MEASURES
public static final int OPERAND_MEASURES- See Also:
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OPERAND_AFTER
public static final int OPERAND_AFTER- See Also:
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OPERAND_SUBSET
public static final int OPERAND_SUBSET- See Also:
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OPERAND_ROWS_PER_MATCH
public static final int OPERAND_ROWS_PER_MATCH- See Also:
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OPERAND_PARTITION_BY
public static final int OPERAND_PARTITION_BY- See Also:
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OPERAND_ORDER_BY
public static final int OPERAND_ORDER_BY- See Also:
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OPERAND_INTERVAL
public static final int OPERAND_INTERVAL- See Also:
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SKIP_TO_FIRST
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SKIP_TO_LAST
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Constructor Details
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SqlMatchRecognize
public SqlMatchRecognize(SqlParserPos pos, SqlNode tableRef, SqlNode pattern, SqlLiteral strictStart, SqlLiteral strictEnd, SqlNodeList patternDefList, SqlNodeList measureList, @Nullable SqlNode after, SqlNodeList subsetList, @Nullable SqlLiteral rowsPerMatch, SqlNodeList partitionList, SqlNodeList orderList, @Nullable SqlLiteral interval) Creates a SqlMatchRecognize.
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Method Details
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getOperator
- Specified by:
getOperator
in classSqlCall
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getKind
Description copied from class:SqlNode
Returns the type of node this is, orSqlKind.OTHER
if it's nothing special. -
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.- Specified by:
getOperandList
in classSqlCall
- Returns:
- the list of call operands, never null, the operands can be null
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unparse
Description copied from class:SqlNode
Writes a SQL representation of this node to a writer.The
leftPrec
andrightPrec
parameters give us enough context to decide whether we need to enclose the expression in parentheses. For example, we need parentheses around "2 + 3" if preceded by "5 *". This is because the precedence of the "*" operator is greater than the precedence of the "+" operator.The algorithm handles left- and right-associative operators by giving them slightly different left- and right-precedence.
If
SqlWriter.isAlwaysUseParentheses()
is true, we use parentheses even when they are not required by the precedence rules.For the details of this algorithm, see
SqlCall.unparse(org.apache.calcite.sql.SqlWriter, int, int)
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validate
Description copied from class:SqlCall
Validates this call.The default implementation delegates the validation to the operator's
SqlOperator.validateCall(org.apache.calcite.sql.SqlCall, org.apache.calcite.sql.validate.SqlValidator, org.apache.calcite.sql.validate.SqlValidatorScope, org.apache.calcite.sql.validate.SqlValidatorScope)
. Derived classes may override (as do, for exampleSqlSelect
andSqlUpdate
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setOperand
Description copied from class:SqlCall
Changes the value of an operand. Allows some rewrite bySqlValidator
; use sparingly.- Overrides:
setOperand
in classSqlCall
- Parameters:
i
- Operand indexoperand
- Operand value
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getTableRef
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getPattern
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getStrictStart
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getStrictEnd
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getPatternDefList
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getMeasureList
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getAfter
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getSubsetList
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getRowsPerMatch
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getPartitionList
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getOrderList
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getInterval
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