casacore
Public Types | Public Member Functions | Static Public Member Functions | Private Member Functions | Static Private Member Functions | Private Attributes | List of all members
casacore::TableParseSelect Class Reference

Select-class for flex/bison scanner/parser for TableParse. More...

#include <TableParse.h>

Public Types

enum  CommandType {
  PSELECT,
  PUPDATE,
  PINSERT,
  PDELETE,
  PCOUNT,
  PCALC,
  PCRETAB
}
 
enum  GroupAggrType {
  GROUPBY,
  AGGR_FUNCS,
  ONLY_COUNTALL
}
 

Public Member Functions

 TableParseSelect (CommandType type)
 Construct. More...
 
 ~TableParseSelect ()
 Destructor. More...
 
CommandType commandType () const
 Return the command type. More...
 
TableExprNode getNode () const
 Return the expression node. More...
 
void execute (Bool showTimings, Bool setInGiving, Bool mustSelect, uInt maxRow, Bool doTracing=False)
 Execute the select command (select/sort/projection/groupby/having/giving). More...
 
Table doFromQuery (Bool showTimings)
 Execute a query in a from clause resulting in a Table. More...
 
TableExprNode doSubQuery (Bool showTimings)
 Execute a subquery and create an appropriate node for the result. More...
 
TableExprNode doExists (Bool noexists, Bool showTimings)
 Test if a subquery has sufficient elements. More...
 
void show (ostream &os) const
 Show the expression tree. More...
 
void handleWhere (const TableExprNode &)
 Keep the selection expression. More...
 
void handleGroupby (const vector< TableExprNode > &, Bool rollup)
 Keep the groupby expressions. More...
 
void handleHaving (const TableExprNode &)
 Keep the having expression. More...
 
void handleCalcComm (const TableExprNode &)
 Keep the expression of a calculate command. More...
 
void handleCreTab (const String &tableName, const Record &dmInfo)
 Keep the create table command. More...
 
void handleColSpec (const String &columnName, const String &dataType, const Record &spec, Bool isCOrder=False)
 Keep the column specification in a create table command. More...
 
void addUpdate (TableParseUpdate *upd)
 Add an update object. More...
 
void handleUpdate ()
 Keep the update expressions. More...
 
void handleInsert ()
 Make ready for the insert expression. More...
 
void handleInsert (TableParseSelect *sel)
 
void handleCount ()
 Make ready for a COUNT command. More...
 
void handleSort (const std::vector< TableParseSort > &sortList, Bool noDuplicates, Sort::Order defaultSortOrder)
 Keep the sort expressions. More...
 
void handleLimit (const TableExprNodeSetElem &expr)
 Evaluate and keep limit/offset/stride given as start:end:incr. More...
 
void handleLimit (const TableExprNode &expr)
 Evaluate and keep the limit value. More...
 
void handleOffset (const TableExprNode &expr)
 Evaluate and keep the offset value. More...
 
void addTable (Int tabnr, const String &name, const Table &table, const String &shorthand, const vector< const Table *> tempTables, const vector< TableParseSelect *> &stack)
 Add a table nr, name, or object to the container. More...
 
void replaceTable (const Table &table)
 Replace the first table (used by CALC command). More...
 
TableExprNode handleKeyCol (const String &name, Bool tryProj)
 Find the keyword or column name and create a TableExprNode from it. More...
 
TableExprNode handleFunc (const String &name, const TableExprNodeSet &arguments, const TaQLStyle &)
 Handle a function. More...
 
void handleColumn (Int type, const String &name, const TableExprNode &expr, const String &newName, const String &newDtype)
 Add a column to the list of column names. More...
 
void handleColumnFinish (Bool distinct)
 Finish the addition of columns to the list of column names. More...
 
void handleGiving (const String &name, Int type)
 Handle the name and type given in a GIVING clause. More...
 
void handleGiving (const TableExprNodeSet &)
 Handle the set given in a GIVING clause. More...
 
const Block< String > & getColumnNames () const
 Get the projected column names. More...
 
const TablegetTable () const
 Get the resulting table. More...
 

Static Public Member Functions

static TableExprNode handleSlice (const TableExprNode &array, const TableExprNodeSet &indices, const TaQLStyle &)
 Handle a slice operator. More...
 
static TableExprNode makeFuncNode (TableParseSelect *, const String &name, const TableExprNodeSet &arguments, const Vector< int > &ignoreFuncs, const Table &table, const TaQLStyle &)
 Make a function object node for the given function name and arguments. More...
 
static void checkAggrFuncs (const TableExprNode &node)
 An exception is thrown if the node uses an aggregate function. More...
 

Private Member Functions

Int testGroupAggr (vector< TableExprNodeRep *> &aggr) const
 Test if groupby or aggregate functions are given. More...
 
vector< TableExprNodeRep * > getAggrNodes () const
 Get the aggregate functions used in SELECT and HAVING. More...
 
void doUpdate (Bool showTimings, const Table &origTable, Table &updTable, const Vector< uInt > &rownrs, const CountedPtr< TableExprGroupResult > &groups=CountedPtr< TableExprGroupResult >())
 Do the update step. More...
 
Table doInsert (Bool showTimings, Table &table)
 Do the insert step and return a selection containing the new rows. More...
 
void doDelete (Bool showTimings, Table &table)
 Do the delete step. More...
 
Table doCount (Bool showTimings, const Table &)
 Do the count step returning a memory table containing the unique column values and the counts of the column values. More...
 
Table doProject (Bool showTimings, const Table &, const CountedPtr< TableExprGroupResult > &groups=CountedPtr< TableExprGroupResult >())
 Do the projection step returning a table containing the projection. More...
 
Table doProjectExpr (Bool useSel, const CountedPtr< TableExprGroupResult > &groups)
 Do the projection containing column expressions. More...
 
void makeProjectExprTable ()
 Make the (empty) table for the epxression in the SELECT clause. More...
 
void makeProjectExprSel ()
 Fill projectExprSelColumn_p telling the columns to be projected at the first stage. More...
 
void addApplySelNode (const TableExprNode &node)
 Add a column node to applySelNodes_p. More...
 
Table adjustApplySelNodes (const Table &)
 Set the selected rows for the column objects in applySelNodes_p. More...
 
CountedPtr< TableExprGroupResultdoGroupby (bool showTimings, vector< TableExprNodeRep *> aggrNodes, Int groupAggrUsed)
 Do the groupby/aggregate step and return its result. More...
 
void doHaving (Bool showTimings, const CountedPtr< TableExprGroupResult > &groups)
 Do the HAVING step. More...
 
CountedPtr< TableExprGroupResultdoOnlyCountAll (TableExprNodeRep *aggrNode)
 Do a groupby/aggregate step that only does a 'select count(*)'. More...
 
CountedPtr< TableExprGroupResultdoGroupByAggr (const vector< TableExprNodeRep *> &aggrNodes)
 Do a full groupby/aggregate step. More...
 
void doSort (Bool showTimings)
 Do the sort step. More...
 
void doLimOff (Bool showTimings)
 Do the limit/offset step. More...
 
Table doLimOff (Bool showTimings, const Table &table)
 
Table doDistinct (Bool showTimings, const Table &table)
 Do the 'select distinct' step. More...
 
Table doFinish (Bool showTimings, Table &table)
 Finish the table (rename, copy, and/or flush). More...
 
template<typename TCOL , typename TNODE >
void updateValue2 (uInt row, const TableExprId &rowid, Bool isScalarCol, const TableExprNode &node, TableColumn &col, const Slicer *slicerPtr, IPosition &blc, IPosition &trc, IPosition &inc)
 Update the values in the columns (helpers of doUpdate). More...
 
template<typename T >
void updateValue1 (uInt row, const TableExprId &rowid, Bool isScalarCol, const TableExprNode &node, TableColumn &col, const Slicer *slicerPtr, IPosition &blc, IPosition &trc, IPosition &inc)
 
DataType makeDataType (DataType dtype, const String &dtstr, const String &colName)
 Make a data type from the string. More...
 
Sort::Order getOrder (const TableParseSort &key) const
 Get the order for this key. More...
 
TableExprNode getColSet ()
 Make an array from the contents of a column in a subquery. More...
 
TableExprNode makeSubSet () const
 Make a set from the results of the subquery. More...
 
Int64 evalIntScaExpr (const TableExprNode &expr) const
 Evaluate an int scalar expression. More...
 
Bool splitName (String &shorthand, String &columnName, Vector< String > &fieldNames, const String &name, Bool checkError) const
 Split a name into its parts (shorthand, column and field names). More...
 
Table findTable (const String &shorthand) const
 Find a table for the given shorthand. More...
 
void handleWildColumn (Int stringType, const String &name)
 Handle the selection of a wildcarded column name. More...
 
void addColumnDesc (TableDesc &td, DataType dtype, const String &colName, Int options, Int ndim, const IPosition &shape, const String &dmType, const String &dmGroup, const String &comment, const TableRecord &keywordSet, const String &unitName)
 Add the description of a column to the table description. More...
 
Block< StringgetStoredColumns (const Table &tab) const
 Find the names of all stored columns in a table. More...
 
template<typename T >
vector< CountedPtr< TableExprGroupFuncSet > > doGroupByAggrSingleKey (const vector< TableExprNodeRep *> &aggrNodes)
 Create the set of aggregate functions and groupby keys in case a single groupby key is given. More...
 
vector< CountedPtr< TableExprGroupFuncSet > > doGroupByAggrMultipleKeys (const vector< TableExprNodeRep *> &aggrNodes)
 Create the set of aggregate functions and groupby keys in case multiple keys are given. More...
 

Static Private Member Functions

static TableExprNode makeUDFNode (TableParseSelect *, const String &name, const TableExprNodeSet &arguments, const Table &table, const TaQLStyle &)
 Try to make a UDF function node for the given function name and arguments. More...
 
static TableExprFuncNode::FunctionType findFunc (const String &name, uInt narguments, const Vector< Int > &ignoreFuncs)
 Find the function code belonging to a function name. More...
 
static Table tableKey (const String &fullName, const String &shorthand, const String &columnName, const Vector< String > &fieldNames, const vector< TableParseSelect *> &stack)
 Try to find the keyword representing a table in one of the tables in any select block (from inner to outer). More...
 
static Table findTableKey (const Table &table, const String &columnName, const Vector< String > &keyNames)
 Try to find the keyword representing a table in the given table. More...
 

Private Attributes

CommandType commandType_p
 
TableDesc tableDesc_p
 
vector< TableParsefromTables_p
 
Block< StringcolumnNames_p
 
Block< TableExprNodecolumnExpr_p
 
Block< StringcolumnOldNames_p
 
Block< StringcolumnDtypes_p
 
Block< TableRecordcolumnKeywords_p
 
uInt nrSelExprUsed_p
 
Bool distinct_p
 
String resultName_p
 
Int resultType_p
 
TableExprNodeSetresultSet_p
 
TableExprNode node_p
 
vector< TableExprNodegroupbyNodes_p
 
Bool groupbyRollup_p
 
TableExprNode havingNode_p
 
Int64 limit_p
 
Int64 endrow_p
 
Int64 offset_p
 
Int64 stride_p
 
std::vector< TableParseUpdate * > update_p
 
TableParseSelectinsSel_p
 
std::vector< TableParseSortsort_p
 
Bool noDupl_p
 
Sort::Order order_p
 
vector< TableExprNodeapplySelNodes_p
 
Table table_p
 
Table firstColTable_p
 
String firstColName_p
 
Table projectExprTable_p
 
Block< uIntprojectExprSubset_p
 
Block< BoolprojectExprSelColumn_p
 
Vector< uIntrownrs_p
 

Detailed Description

Select-class for flex/bison scanner/parser for TableParse.

Intended use:

Internal

Review Status

Reviewed By:
UNKNOWN
Date Reviewed:
before2004/08/25

Prerequisite

Synopsis

This class is needed for the the actions in the flex scanner and bison parser. This stores the information by constructing TableParse objects as needed and storing them in a vector.

Motivation

It is necessary to be able to give a table select command in ASCII. This can be used in a CLI or in the table browser to get a subset of a table or to sort a table.

Definition at line 346 of file TableParse.h.

Member Enumeration Documentation

§ CommandType

Enumerator
PSELECT 
PUPDATE 
PINSERT 
PDELETE 
PCOUNT 
PCALC 
PCRETAB 

Definition at line 349 of file TableParse.h.

§ GroupAggrType

Enumerator
GROUPBY 
AGGR_FUNCS 
ONLY_COUNTALL 

Definition at line 359 of file TableParse.h.

Constructor & Destructor Documentation

§ TableParseSelect()

casacore::TableParseSelect::TableParseSelect ( CommandType  type)

Construct.

§ ~TableParseSelect()

casacore::TableParseSelect::~TableParseSelect ( )

Destructor.

Member Function Documentation

§ addApplySelNode()

void casacore::TableParseSelect::addApplySelNode ( const TableExprNode node)
inlineprivate

Add a column node to applySelNodes_p.

Definition at line 571 of file TableParse.h.

References casacore::ndim(), and casacore::shape().

§ addColumnDesc()

void casacore::TableParseSelect::addColumnDesc ( TableDesc td,
DataType  dtype,
const String colName,
Int  options,
Int  ndim,
const IPosition shape,
const String dmType,
const String dmGroup,
const String comment,
const TableRecord keywordSet,
const String unitName 
)
private

Add the description of a column to the table description.

ndim < 0 means a scalar column.

§ addTable()

void casacore::TableParseSelect::addTable ( Int  tabnr,
const String name,
const Table table,
const String shorthand,
const vector< const Table *>  tempTables,
const vector< TableParseSelect *> &  stack 
)

Add a table nr, name, or object to the container.

§ addUpdate()

void casacore::TableParseSelect::addUpdate ( TableParseUpdate upd)
inline

Add an update object.

Definition at line 848 of file TableParse.h.

§ adjustApplySelNodes()

Table casacore::TableParseSelect::adjustApplySelNodes ( const Table )
private

Set the selected rows for the column objects in applySelNodes_p.

These nodes refer the original table. They requires different row numbers than the selected groups and projected columns. rownrs_p is changed to use row 0..n. It returns the Table containing the subset of rows in the input Table.

§ checkAggrFuncs()

static void casacore::TableParseSelect::checkAggrFuncs ( const TableExprNode node)
static

An exception is thrown if the node uses an aggregate function.

§ commandType()

CommandType casacore::TableParseSelect::commandType ( ) const
inline

Return the command type.

Definition at line 372 of file TableParse.h.

§ doCount()

Table casacore::TableParseSelect::doCount ( Bool  showTimings,
const Table  
)
private

Do the count step returning a memory table containing the unique column values and the counts of the column values.

§ doDelete()

void casacore::TableParseSelect::doDelete ( Bool  showTimings,
Table table 
)
private

Do the delete step.

§ doDistinct()

Table casacore::TableParseSelect::doDistinct ( Bool  showTimings,
const Table table 
)
private

Do the 'select distinct' step.

§ doExists()

TableExprNode casacore::TableParseSelect::doExists ( Bool  noexists,
Bool  showTimings 
)

Test if a subquery has sufficient elements.

It uses default LIMIT=1, but that can be overidden in the subquery. The flag tells if NOT EXISTS or EXISTS was given.

§ doFinish()

Table casacore::TableParseSelect::doFinish ( Bool  showTimings,
Table table 
)
private

Finish the table (rename, copy, and/or flush).

§ doFromQuery()

Table casacore::TableParseSelect::doFromQuery ( Bool  showTimings)

Execute a query in a from clause resulting in a Table.

§ doGroupby()

CountedPtr<TableExprGroupResult> casacore::TableParseSelect::doGroupby ( bool  showTimings,
vector< TableExprNodeRep *>  aggrNodes,
Int  groupAggrUsed 
)
private

Do the groupby/aggregate step and return its result.

§ doGroupByAggr()

CountedPtr<TableExprGroupResult> casacore::TableParseSelect::doGroupByAggr ( const vector< TableExprNodeRep *> &  aggrNodes)
private

Do a full groupby/aggregate step.

§ doGroupByAggrMultipleKeys()

vector<CountedPtr<TableExprGroupFuncSet> > casacore::TableParseSelect::doGroupByAggrMultipleKeys ( const vector< TableExprNodeRep *> &  aggrNodes)
private

Create the set of aggregate functions and groupby keys in case multiple keys are given.

§ doGroupByAggrSingleKey()

template<typename T >
vector<CountedPtr<TableExprGroupFuncSet> > casacore::TableParseSelect::doGroupByAggrSingleKey ( const vector< TableExprNodeRep *> &  aggrNodes)
inlineprivate

Create the set of aggregate functions and groupby keys in case a single groupby key is given.

This offers much faster map access then doGroupByAggrMultiple.

We have to group the data according to the (possibly empty) groupby. We step through the table in the normal order which may not be the groupby order. A map<key,int> is used to keep track of the results where the int is the index in a vector of a set of aggregate function objects.

Loop through all rows. For each row generate the key to get the right entry.

Definition at line 695 of file TableParse.h.

References casacore::max(), and casacore::TableExprId::setRownr().

§ doHaving()

void casacore::TableParseSelect::doHaving ( Bool  showTimings,
const CountedPtr< TableExprGroupResult > &  groups 
)
private

Do the HAVING step.

§ doInsert()

Table casacore::TableParseSelect::doInsert ( Bool  showTimings,
Table table 
)
private

Do the insert step and return a selection containing the new rows.

§ doLimOff() [1/2]

void casacore::TableParseSelect::doLimOff ( Bool  showTimings)
private

Do the limit/offset step.

§ doLimOff() [2/2]

Table casacore::TableParseSelect::doLimOff ( Bool  showTimings,
const Table table 
)
private

§ doOnlyCountAll()

CountedPtr<TableExprGroupResult> casacore::TableParseSelect::doOnlyCountAll ( TableExprNodeRep aggrNode)
private

Do a groupby/aggregate step that only does a 'select count(*)'.

§ doProject()

Table casacore::TableParseSelect::doProject ( Bool  showTimings,
const Table ,
const CountedPtr< TableExprGroupResult > &  groups = CountedPtrTableExprGroupResult >() 
)
private

Do the projection step returning a table containing the projection.

§ doProjectExpr()

Table casacore::TableParseSelect::doProjectExpr ( Bool  useSel,
const CountedPtr< TableExprGroupResult > &  groups 
)
private

Do the projection containing column expressions.

Use the selected or unselected columns depending on useSel.

§ doSort()

void casacore::TableParseSelect::doSort ( Bool  showTimings)
private

Do the sort step.

§ doSubQuery()

TableExprNode casacore::TableParseSelect::doSubQuery ( Bool  showTimings)

Execute a subquery and create an appropriate node for the result.

§ doUpdate()

void casacore::TableParseSelect::doUpdate ( Bool  showTimings,
const Table origTable,
Table updTable,
const Vector< uInt > &  rownrs,
const CountedPtr< TableExprGroupResult > &  groups = CountedPtrTableExprGroupResult >() 
)
private

Do the update step.

Rows 0,1,2,.. in UpdTable are updated from the expression result for the rows in the given rownrs vector.

§ evalIntScaExpr()

Int64 casacore::TableParseSelect::evalIntScaExpr ( const TableExprNode expr) const
private

Evaluate an int scalar expression.

§ execute()

void casacore::TableParseSelect::execute ( Bool  showTimings,
Bool  setInGiving,
Bool  mustSelect,
uInt  maxRow,
Bool  doTracing = False 
)

Execute the select command (select/sort/projection/groupby/having/giving).

The setInGiving flag tells if a set in the GIVING part is allowed. The mustSelect flag tells if a SELECT command must do something. Usually that is required, but not for a SELECT in an INSERT command. Optionally the maximum nr of rows to be selected can be given. It will be used as the default value for the LIMIT clause. 0 = no maximum.

§ findFunc()

static TableExprFuncNode::FunctionType casacore::TableParseSelect::findFunc ( const String name,
uInt  narguments,
const Vector< Int > &  ignoreFuncs 
)
staticprivate

Find the function code belonging to a function name.

Functions to be ignored can be given (as function type values). If the function name is unknown, NRFUNC is returned.

§ findTable()

Table casacore::TableParseSelect::findTable ( const String shorthand) const
private

Find a table for the given shorthand.

If no shorthand is given, the first table is returned (if there). If not found, a null Table object is returned.

§ findTableKey()

static Table casacore::TableParseSelect::findTableKey ( const Table table,
const String columnName,
const Vector< String > &  keyNames 
)
staticprivate

Try to find the keyword representing a table in the given table.

If the columnName is empty, the keyword is a table keyword. If not found, a null Table object is returned.

§ getAggrNodes()

vector<TableExprNodeRep*> casacore::TableParseSelect::getAggrNodes ( ) const
private

Get the aggregate functions used in SELECT and HAVING.

§ getColSet()

TableExprNode casacore::TableParseSelect::getColSet ( )
private

Make an array from the contents of a column in a subquery.

§ getColumnNames()

const Block< String > & casacore::TableParseSelect::getColumnNames ( ) const
inline

Get the projected column names.

Definition at line 842 of file TableParse.h.

§ getNode()

TableExprNode casacore::TableParseSelect::getNode ( ) const
inline

Return the expression node.

Definition at line 376 of file TableParse.h.

References casacore::array(), casacore::False, casacore::TableParse::shorthand(), and casacore::TableParse::table().

§ getOrder()

Sort::Order casacore::TableParseSelect::getOrder ( const TableParseSort key) const
inlineprivate

Get the order for this key.

Use the default order_p if not explicitly given with the key.

Definition at line 851 of file TableParse.h.

References casacore::TableParseSort::order(), and casacore::TableParseSort::orderGiven().

§ getStoredColumns()

Block<String> casacore::TableParseSelect::getStoredColumns ( const Table tab) const
private

Find the names of all stored columns in a table.

§ getTable()

const Table & casacore::TableParseSelect::getTable ( ) const
inline

Get the resulting table.

Definition at line 845 of file TableParse.h.

References casacore::TableParse::table_p.

§ handleCalcComm()

void casacore::TableParseSelect::handleCalcComm ( const TableExprNode )

Keep the expression of a calculate command.

§ handleColSpec()

void casacore::TableParseSelect::handleColSpec ( const String columnName,
const String dataType,
const Record spec,
Bool  isCOrder = False 
)

Keep the column specification in a create table command.

§ handleColumn()

void casacore::TableParseSelect::handleColumn ( Int  type,
const String name,
const TableExprNode expr,
const String newName,
const String newDtype 
)

Add a column to the list of column names.

§ handleColumnFinish()

void casacore::TableParseSelect::handleColumnFinish ( Bool  distinct)

Finish the addition of columns to the list of column names.

§ handleCount()

void casacore::TableParseSelect::handleCount ( )

Make ready for a COUNT command.

It checks if all column expressions are scalar.

§ handleCreTab()

void casacore::TableParseSelect::handleCreTab ( const String tableName,
const Record dmInfo 
)

Keep the create table command.

§ handleFunc()

TableExprNode casacore::TableParseSelect::handleFunc ( const String name,
const TableExprNodeSet arguments,
const TaQLStyle  
)

Handle a function.

§ handleGiving() [1/2]

void casacore::TableParseSelect::handleGiving ( const String name,
Int  type 
)

Handle the name and type given in a GIVING clause.

§ handleGiving() [2/2]

void casacore::TableParseSelect::handleGiving ( const TableExprNodeSet )

Handle the set given in a GIVING clause.

§ handleGroupby()

void casacore::TableParseSelect::handleGroupby ( const vector< TableExprNode > &  ,
Bool  rollup 
)

Keep the groupby expressions.

It checks if they are all scalar expressions.

§ handleHaving()

void casacore::TableParseSelect::handleHaving ( const TableExprNode )

Keep the having expression.

§ handleInsert() [1/2]

void casacore::TableParseSelect::handleInsert ( )

Make ready for the insert expression.

The first one uses values (added via addUpdate), the second one a subquery.

§ handleInsert() [2/2]

void casacore::TableParseSelect::handleInsert ( TableParseSelect sel)

§ handleKeyCol()

TableExprNode casacore::TableParseSelect::handleKeyCol ( const String name,
Bool  tryProj 
)

Find the keyword or column name and create a TableExprNode from it.

If tryProj=True it is first tried if the column is a coluymn in the projected table (i.e., result from the SELECT part).

§ handleLimit() [1/2]

void casacore::TableParseSelect::handleLimit ( const TableExprNodeSetElem expr)

Evaluate and keep limit/offset/stride given as start:end:incr.

§ handleLimit() [2/2]

void casacore::TableParseSelect::handleLimit ( const TableExprNode expr)

Evaluate and keep the limit value.

§ handleOffset()

void casacore::TableParseSelect::handleOffset ( const TableExprNode expr)

Evaluate and keep the offset value.

§ handleSlice()

static TableExprNode casacore::TableParseSelect::handleSlice ( const TableExprNode array,
const TableExprNodeSet indices,
const TaQLStyle  
)
static

Handle a slice operator.

§ handleSort()

void casacore::TableParseSelect::handleSort ( const std::vector< TableParseSort > &  sortList,
Bool  noDuplicates,
Sort::Order  defaultSortOrder 
)

Keep the sort expressions.

§ handleUpdate()

void casacore::TableParseSelect::handleUpdate ( )

Keep the update expressions.

§ handleWhere()

void casacore::TableParseSelect::handleWhere ( const TableExprNode )

Keep the selection expression.

§ handleWildColumn()

void casacore::TableParseSelect::handleWildColumn ( Int  stringType,
const String name 
)
private

Handle the selection of a wildcarded column name.

§ makeDataType()

DataType casacore::TableParseSelect::makeDataType ( DataType  dtype,
const String dtstr,
const String colName 
)
private

Make a data type from the string.

It checks if it is compatible with the given (expression) data type.

§ makeFuncNode()

static TableExprNode casacore::TableParseSelect::makeFuncNode ( TableParseSelect ,
const String name,
const TableExprNodeSet arguments,
const Vector< int > &  ignoreFuncs,
const Table table,
const TaQLStyle  
)
static

Make a function object node for the given function name and arguments.

The ignoreFuncs vector contains invalid function codes.

§ makeProjectExprSel()

void casacore::TableParseSelect::makeProjectExprSel ( )
private

Fill projectExprSelColumn_p telling the columns to be projected at the first stage.

§ makeProjectExprTable()

void casacore::TableParseSelect::makeProjectExprTable ( )
private

Make the (empty) table for the epxression in the SELECT clause.

§ makeSubSet()

TableExprNode casacore::TableParseSelect::makeSubSet ( ) const
private

Make a set from the results of the subquery.

§ makeUDFNode()

static TableExprNode casacore::TableParseSelect::makeUDFNode ( TableParseSelect ,
const String name,
const TableExprNodeSet arguments,
const Table table,
const TaQLStyle  
)
staticprivate

Try to make a UDF function node for the given function name and arguments.

§ replaceTable()

void casacore::TableParseSelect::replaceTable ( const Table table)

Replace the first table (used by CALC command).

§ show()

void casacore::TableParseSelect::show ( ostream &  os) const

Show the expression tree.

§ splitName()

Bool casacore::TableParseSelect::splitName ( String shorthand,
String columnName,
Vector< String > &  fieldNames,
const String name,
Bool  checkError 
) const
private

Split a name into its parts (shorthand, column and field names).

True is returned when the name contained a keyword part. In that case fieldNames contains the keyword name and the possible subfields. The possible shorthand and the column name are filled in if it is a column keyword. If the name represents a column, fieldNames contains the subfields of the column (for the case where the column contains records). If the name is invalid, an exception is thrown if checkError=True. Otherwise the name is treated as a normal name without keyword.

§ tableKey()

static Table casacore::TableParseSelect::tableKey ( const String fullName,
const String shorthand,
const String columnName,
const Vector< String > &  fieldNames,
const vector< TableParseSelect *> &  stack 
)
staticprivate

Try to find the keyword representing a table in one of the tables in any select block (from inner to outer).

If not found, an exception is thrown.

§ testGroupAggr()

Int casacore::TableParseSelect::testGroupAggr ( vector< TableExprNodeRep *> &  aggr) const
private

Test if groupby or aggregate functions are given.


bit 0: on = groupby is given
bit 1: on = aggregate functions are given
bit 2: on = only select count(*) aggregate function is given

§ updateValue1()

template<typename T >
void casacore::TableParseSelect::updateValue1 ( uInt  row,
const TableExprId rowid,
Bool  isScalarCol,
const TableExprNode node,
TableColumn col,
const Slicer slicerPtr,
IPosition blc,
IPosition trc,
IPosition inc 
)
private

§ updateValue2()

template<typename TCOL , typename TNODE >
void casacore::TableParseSelect::updateValue2 ( uInt  row,
const TableExprId rowid,
Bool  isScalarCol,
const TableExprNode node,
TableColumn col,
const Slicer slicerPtr,
IPosition blc,
IPosition trc,
IPosition inc 
)
private

Update the values in the columns (helpers of doUpdate).

Member Data Documentation

§ applySelNodes_p

vector<TableExprNode> casacore::TableParseSelect::applySelNodes_p
private

Definition at line 790 of file TableParse.h.

§ columnDtypes_p

Block<String> casacore::TableParseSelect::columnDtypes_p
private

Definition at line 749 of file TableParse.h.

§ columnExpr_p

Block<TableExprNode> casacore::TableParseSelect::columnExpr_p
private

Definition at line 745 of file TableParse.h.

§ columnKeywords_p

Block<TableRecord> casacore::TableParseSelect::columnKeywords_p
private

Definition at line 751 of file TableParse.h.

§ columnNames_p

Block<String> casacore::TableParseSelect::columnNames_p
private

Definition at line 743 of file TableParse.h.

§ columnOldNames_p

Block<String> casacore::TableParseSelect::columnOldNames_p
private

Definition at line 747 of file TableParse.h.

§ commandType_p

CommandType casacore::TableParseSelect::commandType_p
private

Definition at line 735 of file TableParse.h.

§ distinct_p

Bool casacore::TableParseSelect::distinct_p
private

Definition at line 755 of file TableParse.h.

§ endrow_p

Int64 casacore::TableParseSelect::endrow_p
private

Definition at line 772 of file TableParse.h.

§ firstColName_p

String casacore::TableParseSelect::firstColName_p
private

Definition at line 796 of file TableParse.h.

§ firstColTable_p

Table casacore::TableParseSelect::firstColTable_p
private

Definition at line 795 of file TableParse.h.

§ fromTables_p

vector<TableParse> casacore::TableParseSelect::fromTables_p
private

Definition at line 741 of file TableParse.h.

§ groupbyNodes_p

vector<TableExprNode> casacore::TableParseSelect::groupbyNodes_p
private

Definition at line 764 of file TableParse.h.

§ groupbyRollup_p

Bool casacore::TableParseSelect::groupbyRollup_p
private

Definition at line 765 of file TableParse.h.

§ havingNode_p

TableExprNode casacore::TableParseSelect::havingNode_p
private

Definition at line 767 of file TableParse.h.

§ insSel_p

TableParseSelect* casacore::TableParseSelect::insSel_p
private

Definition at line 780 of file TableParse.h.

§ limit_p

Int64 casacore::TableParseSelect::limit_p
private

Definition at line 769 of file TableParse.h.

§ node_p

TableExprNode casacore::TableParseSelect::node_p
private

Definition at line 762 of file TableParse.h.

§ noDupl_p

Bool casacore::TableParseSelect::noDupl_p
private

Definition at line 784 of file TableParse.h.

§ nrSelExprUsed_p

uInt casacore::TableParseSelect::nrSelExprUsed_p
private

Definition at line 753 of file TableParse.h.

§ offset_p

Int64 casacore::TableParseSelect::offset_p
private

Definition at line 774 of file TableParse.h.

§ order_p

Sort::Order casacore::TableParseSelect::order_p
private

Definition at line 786 of file TableParse.h.

§ projectExprSelColumn_p

Block<Bool> casacore::TableParseSelect::projectExprSelColumn_p
private

Definition at line 801 of file TableParse.h.

§ projectExprSubset_p

Block<uInt> casacore::TableParseSelect::projectExprSubset_p
private

Definition at line 800 of file TableParse.h.

§ projectExprTable_p

Table casacore::TableParseSelect::projectExprTable_p
private

Definition at line 798 of file TableParse.h.

§ resultName_p

String casacore::TableParseSelect::resultName_p
private

Definition at line 757 of file TableParse.h.

§ resultSet_p

TableExprNodeSet* casacore::TableParseSelect::resultSet_p
private

Definition at line 760 of file TableParse.h.

§ resultType_p

Int casacore::TableParseSelect::resultType_p
private

Definition at line 758 of file TableParse.h.

§ rownrs_p

Vector<uInt> casacore::TableParseSelect::rownrs_p
private

Definition at line 803 of file TableParse.h.

§ sort_p

std::vector<TableParseSort> casacore::TableParseSelect::sort_p
private

Definition at line 782 of file TableParse.h.

§ stride_p

Int64 casacore::TableParseSelect::stride_p
private

Definition at line 776 of file TableParse.h.

§ table_p

Table casacore::TableParseSelect::table_p
private

Definition at line 792 of file TableParse.h.

§ tableDesc_p

TableDesc casacore::TableParseSelect::tableDesc_p
private

Definition at line 737 of file TableParse.h.

§ update_p

std::vector<TableParseUpdate*> casacore::TableParseSelect::update_p
private

Definition at line 778 of file TableParse.h.


The documentation for this class was generated from the following file: