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//# TableKeyword.cc: A keyword value representing a table
//# Copyright (C) 1996,1997,1998,2000,2001,2002
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
//# Includes
#include <casacore/tables/Tables/TableKeyword.h>
#include <casacore/tables/Tables/Table.h>
#include <casacore/tables/Tables/PlainTable.h>
#include <casacore/tables/Tables/TableAttr.h>
#include <casacore/tables/Tables/TableDesc.h>
#include <casacore/tables/Tables/TableError.h>
#include <casacore/casa/OS/Path.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
TableKeyword::TableKeyword (const String& tableDescName)
: table_p (new Table),
tableDescName_p (tableDescName)
{}
TableKeyword::TableKeyword (const Table& table, const String& tableDescName)
: table_p (new Table),
attr_p (table),
tableDescName_p (tableDescName)
{
// Only keep the Table object if not persistent.
if (table.isMarkedForDelete()) {
*table_p = table;
} else {
*table_p = Table();
}
}
TableKeyword::TableKeyword (const TableKeyword& that)
: table_p (new Table(*that.table_p)),
attr_p (that.attr_p),
tableDescName_p (that.tableDescName_p)
{}
TableKeyword& TableKeyword::operator= (const TableKeyword& that)
{
if (this != &that) {
*table_p = *that.table_p;
attr_p = that.attr_p;
tableDescName_p = that.tableDescName_p;
}
return *this;
}
TableKeyword& TableKeyword::operator= (const Table& table)
{
if (!conform (table)) {
throw (TableError ("TableKeyword::operator=; non-conforming table"));
}
attr_p.set (table);
// Only keep the Table object is not persistent.
if (table.isMarkedForDelete()) {
*table_p = table;
} else {
*table_p = Table();
}
return *this;
}
TableKeyword::~TableKeyword()
{
delete table_p;
}
void TableKeyword::set (const String& name, const TableAttr& parentAttr)
{
attr_p = parentAttr;
// If a directory was stripped off, add the directory of the parent.
// Otherwise use the name as such.
attr_p.setName (Path::addDirectory (name, parentAttr.name()));
}
void TableKeyword::setRW()
{
attr_p.setRW();
if (! table_p->isNull()) {
if (Table::isWritable (attr_p.name())) {
table_p->reopenRW();
}
}
}
Bool TableKeyword::isMultiUsed (Bool checkSubTables) const
{
if (! table_p->isNull()) {
return table_p->isMultiUsed (checkSubTables);
}
// The Table is closed immediately (thus not left open unnecessarily).
Table tab(attr_p.name(), Table::Old);
return tab.isMultiUsed (checkSubTables);
}
void TableKeyword::renameTable (const String& newParentName,
const String& oldParentName)
{
// Remove common part of old name from subtable name.
String old = tableName (oldParentName);
if (old != attr_p.name()) {
attr_p.setName (Path::addDirectory (old, newParentName));
}
// Note that renaming subtables of a subtable is not necessary,
// because they are always relative to the subtable (which
// is not really renamed).
}
String TableKeyword::tableName (const String& parentName) const
{
// Get the directory of the parent (with the trailing /).
// If it is contained in this name, return name without it.
return Path::stripDirectory (attr_p.name(), parentName);
}
Table TableKeyword::table (const TableLock* lockOptions) const
{
// Return the table object if already open.
if (! table_p->isNull()) {
return *table_p;
}
// Open for write when needed and possible.
Table::TableOption option = Table::Old;
if (attr_p.openWritable() && Table::isWritable (attr_p.name())) {
option = Table::Update;
}
// Note that the opened table is not kept to avoid possible leaks
// if a table keyword refers to the table itself (like the SORTED_TABLE
// in an MS).
return Table(attr_p.name(),
lockOptions ? *lockOptions : attr_p.lockOptions(),
option);
}
void TableKeyword::close() const
{
*table_p = Table();
}
void TableKeyword::flush (Bool fsync) const
{
if (attr_p.openWritable()) {
if (!table_p->isNull()) {
table_p->flush (fsync, True);
} else {
// The table is not open here, but might be open elsewhere.
// So only flush if open elsewhere, thus in the TableCache.
PlainTable::tableCache().flushTable (attr_p.name(), fsync, True);
}
}
}
Bool TableKeyword::conform (const TableKeyword& that) const
{
// Only check for conformance if a description is fixed.
if (isFixed()) {
return conform (that.table());
}
return True;
}
Bool TableKeyword::conform (const Table& that) const
{
if (isFixed() && tableDescName_p != that.tableDesc().getType()) {
return False;
}
return True;
}
} //# NAMESPACE CASACORE - END
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