Query

Represents a SELECT statement (simple, or union).

Methods
static void	initOrder(Session session, ArrayList expressions, ArrayList expressionSQL, ArrayList orderList, int visible, boolean mustBeInResult, ArrayList filters) Initialize the order by list.
static void	initOrder(Session session, ArrayList expressions, ArrayList expressionSQL, ArrayList orderList, int visible, boolean mustBeInResult, ArrayList filters) Initialize the order by list. This call may extend the expressions list. Parameters: session - the session expressions - the select list expressions expressionSQL - the select list SQL snippets orderList - the order by list visible - the number of visible columns in the select list mustBeInResult - all order by expressions must be in the select list filters - the table filters
void	addGlobalCondition(Parameter param, int columnId, int comparisonType) Add a condition to the query.
void	addGlobalCondition(Parameter param, int columnId, int comparisonType) Add a condition to the query. This is used for views. Parameters: param - the parameter columnId - the column index (0 meaning the first column) comparisonType - the comparison type
void	addParameter(Parameter param) Add a parameter to the parameter list.
void	addParameter(Parameter param) Add a parameter to the parameter list. Parameters: param - the parameter to add
boolean	allowGlobalConditions() Check whether adding condition to the query is allowed.
boolean	allowGlobalConditions() Check whether adding condition to the query is allowed. This is not allowed for views that have an order by and a limit, as it would affect the returned results. Returns: true if adding global conditions is allowed
void	disableCache() Disable caching of result sets.
void	disableCache() Disable caching of result sets.
void	fireBeforeSelectTriggers() Call the before triggers on all tables.
void	fireBeforeSelectTriggers() Call the before triggers on all tables.
int	getColumnCount() Get the column count of this query.
int	getColumnCount() Get the column count of this query. Returns: the column count
double	getCost() Calculate the cost to execute this query.
double	getCost() Calculate the cost to execute this query. Returns: the cost
int	getCostAsExpression() Calculate the cost when used as a subquery.
int	getCostAsExpression() Calculate the cost when used as a subquery. This method returns a value between 10 and 1000000, to ensure adding other values can't result in an integer overflow. Returns: the estimated cost as an integer
ArrayList	getExpressions() The the list of select expressions.
ArrayList	getExpressions() The the list of select expressions. This may include invisible expressions such as order by expressions. Returns: the list of expressions
Expression	getLimit()
Expression	getLimit()
long	getMaxDataModificationId()
long	getMaxDataModificationId()
Expression	getOffset()
Expression	getOffset()
Value[]	getParameterValues()
Value[]	getParameterValues()
int	getSampleSizeValue(Session session) Get the sample size, if set.
int	getSampleSizeValue(Session session) Get the sample size, if set. Parameters: session - the session Returns: the sample size
HashSet	getTables() Get all tables that are involved in this query.
HashSet	getTables() Get all tables that are involved in this query. Returns: the set of tables
boolean	hasOrder() Whether the query has an order.
boolean	hasOrder() Whether the query has an order. Returns: true if it has
void	init() Initialize the query.
void	init() Initialize the query.
boolean	isDistinct()
boolean	isDistinct()
boolean	isEverything(ExpressionVisitor visitor) Check if this expression and all sub-expressions can fulfill a criteria.
boolean	isEverything(ExpressionVisitor visitor) Check if this expression and all sub-expressions can fulfill a criteria. If any part returns false, the result is false. Parameters: visitor - the visitor Returns: if the criteria can be fulfilled
boolean	isNeverLazy()
boolean	isNeverLazy()
boolean	isQuery()
boolean	isQuery()
boolean	isTransactional()
boolean	isTransactional()
boolean	isUnion() Check if this is a UNION query.
boolean	isUnion() Check if this is a UNION query. Returns: {@code true} if this is a UNION query
void	mapColumns(ColumnResolver resolver, int level) Map the columns to the given column resolver.
void	mapColumns(ColumnResolver resolver, int level) Map the columns to the given column resolver. Parameters: resolver - the resolver level - the subquery level (0 is the top level query, 1 is the first subquery level)
void	prepareJoinBatch() Prepare join batching.
void	prepareJoinBatch() Prepare join batching.
SortOrder	prepareOrder(ArrayList orderList, int expressionCount) Create a
SortOrder	prepareOrder(ArrayList orderList, int expressionCount) Create a {@link SortOrder} object given the list of {@link SelectOrderBy} objects. The expression list is extended if necessary. Parameters: orderList - a list of {@link SelectOrderBy} elements expressionCount - the number of columns in the query Returns: the {@link SortOrder} object
ResultInterface	query(int maxrows)
ResultInterface	query(int maxrows)
ResultInterface	query(int limit, ResultTarget target) Execute the query, writing the result to the target result.
ResultInterface	query(int limit, ResultTarget target) Execute the query, writing the result to the target result. Parameters: limit - the maximum number of rows to return target - the target result (null will return the result) Returns: the result set (if the target is not set).
ResultInterface	queryWithoutCache(int limit, ResultTarget target) Execute the query without checking the cache.
ResultInterface	queryWithoutCache(int limit, ResultTarget target) Execute the query without checking the cache. If a target is specified, the results are written to it, and the method returns null. If no target is specified, a new LocalResult is created and returned. Parameters: limit - the limit as specified in the JDBC method call target - the target to write results to Returns: the result
void	setDistinct(boolean b) Set the distinct flag.
void	setDistinct(boolean b) Set the distinct flag. Parameters: b - the new value
void	setEvaluatable(TableFilter tableFilter, boolean b) Change the evaluatable flag.
void	setEvaluatable(TableFilter tableFilter, boolean b) Change the evaluatable flag. This is used when building the execution plan. Parameters: tableFilter - the table filter b - the new value
void	setForUpdate(boolean forUpdate) Set the 'for update' flag.
void	setForUpdate(boolean forUpdate) Set the 'for update' flag. Parameters: forUpdate - the new setting
void	setLimit(Expression limit)
void	setLimit(Expression limit)
void	setNeverLazy(boolean b)
void	setNeverLazy(boolean b)
void	setOffset(Expression offset)
void	setOffset(Expression offset)
void	setOrder(ArrayList order) Set the order by list.
void	setOrder(ArrayList order) Set the order by list. Parameters: order - the order by list
void	setRandomAccessResult(boolean b) Whether results need to support random access.
void	setRandomAccessResult(boolean b) Whether results need to support random access. Parameters: b - the new value
void	setSampleSize(Expression sampleSize)
void	setSampleSize(Expression sampleSize)
void	updateAggregate(Session s) Update all aggregate function values.
void	updateAggregate(Session s) Update all aggregate function values. Parameters: s - the session

Fields
static boolean	distinct
static Expression	limitExpr
static Expression	offsetExpr
static boolean	randomAccessResult
static Expression	sampleSizeExpr

distinct

Whether the result must only contain distinct rows.

limitExpr

The limit expression as specified in the LIMIT or TOP clause.

offsetExpr

The offset expression as specified in the LIMIT .. OFFSET clause.

randomAccessResult

Whether the result needs to support random access.

sampleSizeExpr

The sample size expression as specified in the SAMPLE_SIZE clause.