//# SSMIndStringColumn.h: An Indirect String Array Column in the SSM //# Copyright (C) 2000 //# 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 //# //# $Id$ #ifndef TABLES_SSMINDSTRINGCOLUMN_H #define TABLES_SSMINDSTRINGCOLUMN_H //# Includes #include #include namespace casacore { //# NAMESPACE CASACORE - BEGIN //# Forward declarations // // An Indirect String Array Column in the Standard Storage Manager. // // // // // //# Classes you should understand before using this one. //
  • SSMBase //
  • SSMColumn //
  • SSMStringHandler // // // SSMIndStringColumn represents an Indirect String Array Column in the // Standard Storage Manager. // // // SSMIndStringColumn handles indirect variable shaped string arrays. // Note that indirect fixed shape string arrays are handled by // SSMDirColumn. //

    // All string array access is handled by class // SSMStringHandler, so // SSMIndStringColumn is merely an interface to this class. // The only thing it does is accessing the bucketnr, offset, and length // in the data bucket. // // // The reason that indirect string arrays are handled here instead of // in SSMIndColumn is that the string // buckets are more disk space efficient when string arrays are frequently // updated. // //# //# A List of bugs, limitations, extensions or planned refinements. //# class SSMIndStringColumn : public SSMDirColumn { public: // Create a SSMIndStringColumn object with the given parent. // It initializes the various variables. // It keeps the pointer to its parent (but does not own it). SSMIndStringColumn (SSMBase* aParent, int aDataType, uInt aColNr); virtual ~SSMIndStringColumn(); // Get an array value in the given row. // An exception is thrown if no array is defined in this row. virtual void getArrayV (rownr_t rownr, ArrayBase& dataPtr); // Put an array value in the given row. virtual void putArrayV (rownr_t rownr, const ArrayBase& dataPtr); // Set the shape of the array in the given row. void setShape (rownr_t aRowNr, const IPosition& aShape); // Get the shape of the array in the given row. virtual IPosition shape (rownr_t aRowNr); // This storage manager can handle changing array shapes. Bool canChangeShape() const; // Is the shape defined (i.e. is there an array) in this row? virtual Bool isShapeDefined (rownr_t aRowNr); // Get the dimensionality of the item in the given row. virtual uInt ndim (rownr_t aRowNr); private: // Forbid copy constructor. SSMIndStringColumn (const SSMIndStringColumn&); // Forbid assignment. SSMIndStringColumn& operator= (const SSMIndStringColumn&); }; } //# NAMESPACE CASACORE - END #endif