libdap Updated for version 3.20.10
libdap4 is an implementation of OPeNDAP's DAP protocol.
Byte.h
1
2// -*- mode: c++; c-basic-offset:4 -*-
3
4// This file is part of libdap, A C++ implementation of the OPeNDAP Data
5// Access Protocol.
6
7// Copyright (c) 2002,2003 OPeNDAP, Inc.
8// Author: James Gallagher <jgallagher@opendap.org>
9//
10// This library is free software; you can redistribute it and/or
11// modify it under the terms of the GNU Lesser General Public
12// License as published by the Free Software Foundation; either
13// version 2.1 of the License, or (at your option) any later version.
14//
15// This library is distributed in the hope that it will be useful,
16// but WITHOUT ANY WARRANTY; without even the implied warranty of
17// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18// Lesser General Public License for more details.
19//
20// You should have received a copy of the GNU Lesser General Public
21// License along with this library; if not, write to the Free Software
22// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23//
24// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
25
26// (c) COPYRIGHT URI/MIT 1994-1999
27// Please read the full copyright statement in the file COPYRIGHT_URI.
28//
29// Authors:
30// jhrg,jimg James Gallagher <jgallagher@gso.uri.edu>
31
32// Interface for Byte type.
33//
34// jhrg 9/7/94
35
36#ifndef _byte_h
37#define _byte_h 1
38
39#ifndef _dods_datatypes_h
40#include "dods-datatypes.h"
41#endif
42
43#ifndef _basetype_h
44#include "BaseType.h"
45#endif
46
47#ifndef constraint_evaluator_h
48#include "ConstraintEvaluator.h"
49#endif
50
51namespace libdap
52{
53
60class Byte: public BaseType
61{
62protected:
63 dods_byte d_buf;
64
65public:
66 Byte(const string &n);
67 Byte(const string &n, const string &d);
68
69 virtual ~Byte()
70 {}
71
72 Byte(const Byte &copy_from);
73
74 Byte &operator=(const Byte &rhs);
75
76 virtual unsigned int width(bool constrained = false) const;
77
78 virtual BaseType *ptr_duplicate();
79
80 // DAP2
81 virtual bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval);
82 virtual bool deserialize(UnMarshaller &um, DDS *, bool);
83
84 // DAP4
85 virtual void compute_checksum(Crc32 &checksum);
86 virtual void serialize(D4StreamMarshaller &m, DMR &dmr, bool filter = false);
87 virtual void deserialize(D4StreamUnMarshaller &um, DMR &dmr);
88
89 virtual unsigned int val2buf(void *val, bool reuse = false);
90 virtual unsigned int buf2val(void **val);
91
92 virtual bool set_value(const dods_byte value);
93 virtual dods_byte value() const;
94
95 virtual void print_val(FILE *out, string space = "", bool print_decl_p = true);
96 virtual void print_val(ostream &out, string space = "", bool print_decl_p = true);
97
98 virtual bool ops(BaseType *b, int op);
99 virtual bool d4_ops(BaseType *b, int op);
100 virtual std::vector<BaseType *> *transform_to_dap2(AttrTable *parent_attr_table);
101
102 virtual void dump(ostream &strm) const ;
103};
104
105} // namespace libdap
106
107#endif // _byte_h
108
Definition crc.h:77
Contains the attributes for a dataset.
Definition AttrTable.h:143
The basic data type for the DODS DAP types.
Definition BaseType.h:118
Holds a single byte.
Definition Byte.h:61
virtual bool deserialize(UnMarshaller &um, DDS *, bool)
Deserialize the char on stdin and put the result in _BUF.
Definition Byte.cc:157
virtual std::vector< BaseType * > * transform_to_dap2(AttrTable *parent_attr_table)
DAP4 to DAP2 transform.
Definition Byte.cc:343
virtual unsigned int buf2val(void **val)
Reads the class data.
Definition Byte.cc:212
virtual void dump(ostream &strm) const
dumps information about this object
Definition Byte.cc:378
virtual bool d4_ops(BaseType *b, int op)
Definition Byte.cc:293
virtual unsigned int width(bool constrained=false) const
How many bytes does this variable use Return the number of bytes of storage this variable uses....
Definition Byte.cc:121
virtual void print_val(FILE *out, string space="", bool print_decl_p=true)
Prints the value of the variable.
Definition Byte.cc:246
virtual BaseType * ptr_duplicate()
Definition Byte.cc:107
Byte(const string &n)
The Byte constructor.
Definition Byte.cc:86
virtual unsigned int val2buf(void *val, bool reuse=false)
Definition Byte.cc:198
virtual dods_byte value() const
Definition Byte.cc:241
virtual void compute_checksum(Crc32 &checksum)
include the data for this variable in the checksum DAP4 includes a checksum with every data response....
Definition Byte.cc:165
virtual bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval)
Definition Byte.cc:136
virtual bool set_value(const dods_byte value)
Definition Byte.cc:231
virtual bool ops(BaseType *b, int op)
Evaluate relational operators.
Definition Byte.cc:263
Evaluate a constraint expression.
Marshaller that knows how to marshal/serialize dap data objects to a C++ iostream using DAP4's receiv...
Read data from the stream made by D4StreamMarshaller.
abstract base class used to marshal/serialize dap data objects
Definition Marshaller.h:50
abstract base class used to unmarshall/deserialize dap data objects
top level DAP object to house generic methods