casacore::TableParseUtil Namespace Reference

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Functions
Table	getTable (Int tabnr, const String &name, const Table &ftab, const std::vector< const Table * > &tempTables, const std::vector< TableParseQuery * > &stack, Bool alwaysOpen=True)
	Make a Table object for given name, seqnr or so.
Table	openParentTable (const String &fullName, const String &subTableName, const std::vector< const Table * > &tempTables, const std::vector< TableParseQuery * > &stack)
	Open the parent table of a subtable.
Bool	splitName (String &shorthand, String &columnName, Vector< String > &fieldNames, const String &name, Bool checkError, Bool isKeyword, Bool allowNoKey)
	Split a name into its parts (shorthand, column and field names).
void	setRecFld (RecordInterface &rec, const String &name, const String &dtype, const ValueHolder &vh)
	Define a field with the given data type in the Record.
String	getTypeString (const String &typeStr, DataType type)
	Get the type string.
Block< String >	getStoredColumns (const Table &tab)
	Find the names of all stored columns in a table.
TableExprNode	getColSet (const Table &table)
	Make an array from the contents of a column in a subquery.

Detailed Description

Convenience functions for TableParse classes

Intended use:

Internal

Review Status

Reviewed By:

UNKNOWN

Date Reviewed:

before2004/08/25

Synopsis

This file contains several static helper functions for TableParse. They handle splitting a name into its shorthand, column and/or keyword parts. A name can be given as shorthand.column::key.subkey1.subkey2... where each part is optional. It also has functions to find the given table, column and keyword.

Function Documentation

getColSet()

TableExprNode casacore::TableParseUtil::getColSet

(

const Table &

table

)

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

getStoredColumns()

Block< String > casacore::TableParseUtil::getStoredColumns

(

const Table &

tab

)

Find the names of all stored columns in a table.

getTable()

Table casacore::TableParseUtil::getTable	(	Int	tabnr,
		const String &	name,
		const Table &	ftab,
		const std::vector< const Table * > &	tempTables,
		const std::vector< TableParseQuery * > &	stack,
		Bool	alwaysOpen = True )

Make a Table object for given name, seqnr or so.

If alwaysOpen=False the table will only be looked up, but not opened if not found. This is meant for concatenated tables in TaQLNodeHandler.

References casacore::name(), and casacore::True.

getTypeString()

String casacore::TableParseUtil::getTypeString	(	const String &	typeStr,
		DataType	type )

Get the type string.

If empty, it is made from the given data type.

openParentTable()

Table casacore::TableParseUtil::openParentTable	(	const String &	fullName,
		const String &	subTableName,
		const std::vector< const Table * > &	tempTables,
		const std::vector< TableParseQuery * > &	stack )

Open the parent table of a subtable.

setRecFld()

void casacore::TableParseUtil::setRecFld	(	RecordInterface &	rec,
		const String &	name,
		const String &	dtype,
		const ValueHolder &	vh )

Define a field with the given data type in the Record.

References casacore::name(), and casacore::RecordInterface().

splitName()

Bool casacore::TableParseUtil::splitName	(	String &	shorthand,
		String &	columnName,
		Vector< String > &	fieldNames,
		const String &	name,
		Bool	checkError,
		Bool	isKeyword,
		Bool	allowNoKey )

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

A name can be given as [shorthand][column][::key1.key2.key3...] where the square brackets indicate optional parts. Note that a single name given before :: is interpreted as a shorthand unless preceded by a period.
True is returned if the name contains 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 contains a column, fieldNames is filled with the subfields of the column (for the case where the column contains records).
If isKeyword is True, the first part of name is a keyword, even if no :: is given. If allowNoKey is True, a single :: is allowed, otherwise the name is invalid. If the name is invalid, exceptions are only thrown if checkError=True. Otherwise the name is treated as a normal name without keyword.

References casacore::name().