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MSObservation.h
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1 //# MSObservation.h: The MeasurementSet OBSERVATION Table
2 //# Copyright (C) 1996,1999,2000
3 //# Associated Universities, Inc. Washington DC, USA.
4 //#
5 //# This library is free software; you can redistribute it and/or modify it
6 //# under the terms of the GNU Library General Public License as published by
7 //# the Free Software Foundation; either version 2 of the License, or (at your
8 //# option) any later version.
9 //#
10 //# This library is distributed in the hope that it will be useful, but WITHOUT
11 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
13 //# License for more details.
14 //#
15 //# You should have received a copy of the GNU Library General Public License
16 //# along with this library; if not, write to the Free Software Foundation,
17 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
18 //#
19 //# Correspondence concerning AIPS++ should be addressed as follows:
20 //# Internet email: aips2-request@nrao.edu.
21 //# Postal address: AIPS++ Project Office
22 //# National Radio Astronomy Observatory
23 //# 520 Edgemont Road
24 //# Charlottesville, VA 22903-2475 USA
25 //#
26 //#
27 //# $Id$
28 
29 #ifndef MS_MSOBSERVATION_H
30 #define MS_MSOBSERVATION_H
31 
32 #include <casacore/casa/aips.h>
35 
36 namespace casacore { //# NAMESPACE CASACORE - BEGIN
37 
38 // <summary>
39 // A Table intended to hold a MeasurementSet OBSERVATION table.
40 // </summary>
41 
42 // <use visibility=export>
43 
44 // <reviewed reviewer="Bob Garwood" date="1997/02/01" tests="" demos="">
45 
46 // <prerequisite>
47 // <li> <linkto class="MeasurementSet:description">MeasurementSet</linkto>
48 // <li> <linkto class="MSTable">MSTable</linkto>
49 // </prerequisite>
50 //
51 // <etymology>
52 // MSObservation stands for the MeasurementSet Observation table.
53 // </etymology>
54 //
55 // <synopsis>
56 // An MSObservation is a table intended to hold the OBSERVATION table for
57 // the MeasurementSet. It has an identical set of member functions as
58 // the main MeasurementSet class, except (currently) for the default
59 // calibration members. For further info and examples see the
60 // MeasurementSet class.
61 // </synopsis>
62 //
63 // <example>
64 // See the MeasurementSet for an example of how to access and use this class.
65 // </example>
66 //
67 // <motivation>
68 // It was found that subtables and the main table of the MeasurementSet have
69 // a lot in common, therefore they derive their interface from the same
70 // base class. Each subtable has its own class to keep the enum definitions
71 // and conversion functions in separate scopes.
72 // </motivation>
73 //
74 // <todo asof="1999/1/14">
75 // see MeasurementSet.
76 // </todo>
77 
79  public MSTable<MSObservationEnums>
80 {
81 public:
82 
83  // This constructs an empty MSObservation
84  MSObservation ();
85 
86  // These constructors mirror the Table ones with additional checking
87  // on validity (verifying that the MSObservation will have the required columns
88  // and keywords)
89  // An exception is thrown if the constructed Table is not a valid MSObservation
90  // <thrown>
91  // <li> AipsError
92  // </thrown>
93  // <group name=tableLikeConstructors>
95  MSObservation (const String &tableName, const String &tableDescName,
97  MSObservation (SetupNewTable &newTab, rownr_t nrrow = 0,
98  Bool initialize = False);
99  MSObservation (const Table &table);
100  MSObservation (const MSObservation &other);
101  // </group>
102 
103  // As with tables, the destructor writes the table if necessary.
104  // Additional checking is done here to verify that all required
105  // columns are still present.
106  // If it is NOT valid, it will write the table and then throw an exception.
107  // <thrown>
108  // <li> AipsError
109  // </thrown>
110  ~MSObservation();
111 
112  // Assignment operator, reference semantics
114 
115  // Make a special copy of this Table which references all columns from
116  // this Table except those mentioned; those are empty and writable.
117  // Each forwarded column has the same writable status as the underlying
118  // column. The mentioned columns all use the AipsIO storage manager.
119  // This function is inherited from MSTable and unlikely to be of use,
120  // except in the class MeasurementSet (see comment there)..
121  MSObservation referenceCopy(const String& newTableName,
122  const Block<String>& writableColumns) const;
123 
124  // Initialize the statics appropriately. This does not need to be
125  // called by users, it is called by the implementation class
126  // MSTableImpl.
127  static MSTableMaps initMaps();
128 
129 private:
130 
131  // required by the need to throw an exception in the destructor
133 };
134 
135 
136 } //# NAMESPACE CASACORE - END
137 
138 #endif
Create a new table - define shapes, data managers, etc.
Definition: SetupNewTab.h:340
A Table intended to hold a MeasurementSet OBSERVATION table.
Definition: MSObservation.h:78
~MSObservation()
As with tables, the destructor writes the table if necessary.
Main interface class to a read/write table.
Definition: Table.h:157
const String & tableName() const
Get the table name.
Definition: Table.h:1187
static MSTableMaps initMaps()
Initialize the statics appropriately.
existing table
Definition: Table.h:174
MSObservation & operator=(const MSObservation &)
Assignment operator, reference semantics.
Bool hasBeenDestroyed_p
required by the need to throw an exception in the destructor
MSObservation referenceCopy(const String &newTableName, const Block< String > &writableColumns) const
Make a special copy of this Table which references all columns from this Table except those mentioned...
bool Bool
Define the standard types used by Casacore.
Definition: aipstype.h:42
const Bool False
Definition: aipstype.h:44
simple 1-D array
Definition: Allocator.h:210
uInt64 rownr_t
Define the type of a row number in a table.
Definition: aipsxtype.h:46
A struct holding the maps used in MSTable.
Definition: MSTable.h:51
A Table intended to hold astronomical data.
Definition: MSTable.h:146
String: the storage and methods of handling collections of characters.
Definition: String.h:225
Enums for the MeasurementSet OBSERVATION table.
Definition: MSObsEnums.h:60
MSObservation()
This constructs an empty MSObservation.
TableOption
Define the possible options how a table can be opened.
Definition: Table.h:172