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//# TableCopy.h: Class with static functions for copying a table
//# Copyright (C) 2001,2002,2003
//# 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/TableCopy.h>
#include <casacore/tables/Tables/SetupNewTab.h>
#include <casacore/tables/Tables/TableRow.h>
#include <casacore/tables/Tables/TableDesc.h>
#include <casacore/tables/Tables/TableColumn.h>
#include <casacore/tables/Tables/TableLocker.h>
#include <casacore/tables/Tables/TableError.h>
#include <casacore/tables/DataMan/DataManager.h>
#include <casacore/tables/DataMan/DataManInfo.h>
#include <casacore/casa/Containers/Record.h>
#include <casacore/casa/Utilities/LinearSearch.h>
#include <casacore/casa/Arrays/Vector.h>
#include <casacore/casa/OS/Path.h>
#include <casacore/casa/BasicSL/String.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
Table TableCopy::makeEmptyTable (const String& newName,
const Record& dataManagerInfo,
const Table& tab,
Table::TableOption option,
Table::EndianFormat endianFormat,
Bool replaceTSM,
Bool noRows,
const StorageOption& stopt)
{
TableDesc tabDesc = tab.actualTableDesc();
Record dminfo (dataManagerInfo);
if (dminfo.nfields() == 0) {
// No new dminfo given, so use existing.
dminfo = tab.dataManagerInfo();
} else {
// Set data manager group in description to actual group.
// Also remove possible obsolete hypercolumn definitions.
DataManInfo::adjustDesc (tabDesc, dminfo);
}
if (replaceTSM) {
// Replace possible usage of TiledDataStMan by TiledShapeStMan.
DataManInfo::adjustTSM (tabDesc, dminfo);
}
// Replace non-writable storage managers by StandardStMan.
// This is for instance needed for LofarStMan.
dminfo = DataManInfo::adjustStMan (dminfo, "StandardStMan", True);
SetupNewTable newtab (newName, tabDesc, option, stopt);
newtab.bindCreate (dminfo);
return Table(newtab, (noRows ? 0 : tab.nrow()), False, endianFormat);
}
Table TableCopy::makeEmptyMemoryTable (const String& newName,
const Table& tab,
Bool noRows)
{
TableDesc tabDesc = tab.actualTableDesc();
Record dminfo = tab.dataManagerInfo();
SetupNewTable newtab (newName, tabDesc, Table::New);
newtab.bindCreate (dminfo);
return Table(newtab, Table::Memory, (noRows ? 0 : tab.nrow()));
}
void TableCopy::copyRows (Table& out, const Table& in, rownr_t startout,
rownr_t startin, rownr_t nrrow, Bool flush)
{
// Check if startin and nrrow are correct for input.
if (startin + nrrow > in.nrow()) {
throw TableError ("TableCopy: startin+nrrow exceed nr of input rows");
}
// Get all columns in the output table.
// If there are multiple columns, only take the stored ones.
TableRow outrow(out, out.tableDesc().ncolumn() > 1);
Vector<String> columns = outrow.columnNames();
const TableDesc& tdesc = in.tableDesc();
// Only copy the columns that exist in the input table.
Vector<String> cols(columns.nelements());
uInt nrcol = 0;
for (uInt i=0; i<columns.nelements(); i++) {
if (tdesc.isColumn (columns(i))) {
cols(nrcol++) = columns(i);
}
}
if (nrcol > 0) {
cols.resize (nrcol, True);
// Add rows as needed.
if (startout + nrrow > out.nrow()) {
out.addRow (startout + nrrow - out.nrow());
}
ROTableRow inrow(in, cols);
outrow = TableRow(out, cols);
for (rownr_t i=0; i<nrrow; i++) {
inrow.get (startin + i);
outrow.put (startout + i, inrow.record(), inrow.getDefined(), False);
}
if (flush) {
out.flush();
}
}
}
void TableCopy::copyInfo (Table& out, const Table& in)
{
out.tableInfo() = in.tableInfo();
out.flushTableInfo();
}
void TableCopy::copySubTables (Table& out, const Table& in, Bool noRows,
const Block<String>& omit)
{
copySubTables (out.rwKeywordSet(), in.keywordSet(), out.tableName(),
out.tableType(), in, noRows, omit);
const TableDesc& outDesc = out.tableDesc();
const TableDesc& inDesc = in.tableDesc();
for (uInt i=0; i<outDesc.ncolumn(); i++) {
// Only writable columns can have keywords defined, thus subtables.
if (out.isColumnWritable(i)) {
const String& name = outDesc[i].name();
if (inDesc.isColumn(name)) {
TableColumn outCol(out, name);
TableColumn inCol(in, name);
copySubTables (outCol.rwKeywordSet(), inCol.keywordSet(),
out.tableName(), out.tableType(), in, noRows, omit);
}
}
}
out.flush();
}
void TableCopy::copySubTables (TableRecord& outKeys,
const TableRecord& inKeys,
const String& outName,
Table::TableType outType,
const Table& in,
Bool noRows,
const Block<String>& omit)
{
for (uInt i=0; i<inKeys.nfields(); i++) {
if (inKeys.type(i) == TpTable) {
Table inTab = inKeys.asTable(i);
// Skip a subtable that has to be omitted.
if (linearSearchBrackets1 (omit, inKeys.name(i)) >= 0) {
continue;
}
// Lock the subtable in case not locked yet.
// Note it will keep the lock if already locked.
TableLocker locker(inTab, FileLocker::Read);
// If the table to be copied has the same root as the main input table,
// we do not make a copy. This is needed to avoid the recursive copy
// of SORTED_TABLE in a MeasurementSet.
if (inTab.isSameRoot (in)) {
String keyName = inKeys.name(i);
if (outKeys.isDefined (keyName)) {
outKeys.removeField (keyName);
}
} else {
String newName = outName + '/' + Path(inTab.tableName()).baseName();
Table outTab;
if (outType == Table::Memory) {
outTab = inTab.copyToMemoryTable (newName, noRows);
} else {
inTab.deepCopy (newName, Table::New, False,
Table::AipsrcEndian, noRows);
outTab = Table(newName);
}
outKeys.defineTable (inKeys.name(i), outTab);
}
}
}
}
void TableCopy::cloneColumn (const Table& fromTable, const String& fromColumn,
Table& toTable, const String& newColumn,
const String& dataManagerName,
const Record& newdmInfo)
{
// Use existing column description and give it the new name.
ColumnDesc cd(fromTable.tableDesc()[fromColumn]);
cd.setName (newColumn);
doCloneColumn (fromTable, fromColumn, toTable, cd, dataManagerName, newdmInfo);
}
void TableCopy::doCloneColumn (const Table& fromTable, const String& fromColumn,
Table& toTable, const ColumnDesc& newColumn,
const String& dataManagerName,
const Record& newdmInfo)
{
// Use existing column description and give it the new name.
TableDesc td;
td.addColumn (newColumn);
// Get datamanager info of source column.
Block<String> selcol(1);
selcol[0] = fromColumn;
// Use the given datamanager info; if empty use that of input column.
Record dminfo(newdmInfo);
if (dminfo.nfields() == 0) {
// Do the selection to only get dminfo of source column.
Table t1(fromTable.project (selcol));
dminfo = t1.dataManagerInfo();
// Set the datamanager name if not given.
String dmName (dataManagerName);
if (dmName.empty()) {
dmName = newColumn.name();
}
// Adjust the dminfo.
// It has a subrecord per dataman, thus in this case only 1.
Record& rec = dminfo.rwSubRecord(0);
rec.define ("COLUMNS", Vector<String>(1, newColumn.name()));
rec.define ("NAME", dmName);
}
// Now add the column.
toTable.addColumn (td, dminfo);
}
void TableCopy::copyColumnData (const Table& tabFrom, const String& colFrom,
Table& tabTo, const String& colTo,
Bool preserveTileShape)
{
AlwaysAssert (tabFrom.nrow() == tabTo.nrow(), AipsError);
TableColumn incol(tabFrom, colFrom);
TableColumn outcol(tabTo, colTo);
for (rownr_t i=0; i<tabFrom.nrow(); i++) {
outcol.put (i, incol, preserveTileShape);
}
}
} //# NAMESPACE CASACORE - END
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