/usr/include/casacore/tables/Tables/BaseTabIter.h is in casacore-dev 2.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | //# BaseTabIter.h: Base class for table iterator
//# Copyright (C) 1994,1995,1996,1997,1999
//# 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_BASETABITER_H
#define TABLES_BASETABITER_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/tables/Tables/Table.h>
#include <casacore/casa/Utilities/Compare.h>
#include <casacore/casa/Containers/Block.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//# Forward Declarations
class TableColumn;
class RefTable;
class String;
// <summary>
// Base class for table iterator
// </summary>
// <use visibility=local>
// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="">
// </reviewed>
// <prerequisite>
//# Classes you should understand before using this one.
// <li> BaseTable
// <li> TableIterator
// </prerequisite>
// <etymology>
// BaseTableIterator is the base class for the classes doing
// the actual iterating through a table.
// </etymology>
// <synopsis>
// BaseTableIterator is the base class for the table iterators.
// It is a letter class of the envelope TableIterator.
// Currently there are no classes derived from BaseTableIterator,
// since it can do all the work itself. However, in the future
// this need not to be true anymore.
//
// BaseTableIterator iterates by sorting the table in the required
// order and then creating a RefTable for each step containing the
// rows for that iteration step. Each iteration step assembles the
// rows with equal key values.
// </synopsis>
//# <todo asof="$DATE:$">
//# A List of bugs, limitations, extensions or planned refinements.
//# </todo>
class BaseTableIterator
{
public:
// Create the table iterator to iterate through the given
// columns in the given order. The given compare objects
// will be used for the sort and to compare if values are equal.
// If a comare object is null, the default ObjCompare<T> will be used.
BaseTableIterator (BaseTable*, const Block<String>& columnNames,
const Block<CountedPtr<BaseCompare> >&,
const Block<Int>& orders,
int option);
// Clone this iterator.
BaseTableIterator* clone() const;
virtual ~BaseTableIterator();
// Reset the iterator (i.e. restart iteration).
virtual void reset();
// Return the next group.
virtual BaseTable* next();
protected:
BaseTable* sortTab_p; //# Table sorted in iteration order
uInt lastRow_p; //# last row used from reftab
uInt nrkeys_p; //# nr of columns in group
Block<void*> lastVal_p; //# last value per column
Block<void*> curVal_p; //# current value per column
PtrBlock<BaseColumn*> colPtr_p; //# pointer to column objects
Block<CountedPtr<BaseCompare> > cmpObj_p; //# comparison object per column
// Copy constructor (to be used by clone)
BaseTableIterator (const BaseTableIterator&);
private:
// Assignment is not needed, because the assignment operator in
// the envelope class TableIterator has reference semantics.
// Declaring it private, makes it unusable.
BaseTableIterator& operator= (const BaseTableIterator&);
};
} //# NAMESPACE CASACORE - END
#endif
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