summaryrefslogtreecommitdiffstats
path: root/hl/examples/ex_table_08.c
blob: bd3a3e1da49e694b60dd32fa1039b5d7f8b916e7 (plain)
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include "hdf5_hl.h"
#include <stdlib.h>

/*-------------------------------------------------------------------------
 * Table API example
 *
 * H5TBinsert_record
 *
 *-------------------------------------------------------------------------
 */

#define NFIELDS      (hsize_t)  5
#define NRECORDS     (hsize_t)  8
#define NRECORDS_INS (hsize_t)  2
#define TABLE_NAME              "table"

int main( void )
{
 typedef struct Particle
 {
  char   name[16];
  int    lati;
  int    longi;
  float  pressure;
  double temperature;
 } Particle;

 Particle  dst_buf[ NRECORDS + NRECORDS_INS ];

  /* Define an array of Particles */
 Particle  p_data[NRECORDS] = {
 {"zero",0,0, 0.0f, 0.0},
 {"one",10,10, 1.0f, 10.0},
 {"two",  20,20, 2.0f, 20.0},
 {"three",30,30, 3.0f, 30.0},
 {"four", 40,40, 4.0f, 40.0},
 {"five", 50,50, 5.0f, 50.0},
 {"six",  60,60, 6.0f, 60.0},
 {"seven",70,70, 7.0f, 70.0}
  };

 /* Calculate the size and the offsets of our struct members in memory */
 size_t dst_size =  sizeof( Particle );
 size_t dst_offset[NFIELDS] = { HOFFSET( Particle, name ),
                                HOFFSET( Particle, lati ),
                                HOFFSET( Particle, longi ),
                                HOFFSET( Particle, pressure ),
                                HOFFSET( Particle, temperature )};
 size_t dst_sizes[NFIELDS] = { sizeof( p_data[0].name),
                               sizeof( p_data[0].lati),
                               sizeof( p_data[0].longi),
                               sizeof( p_data[0].pressure),
                               sizeof( p_data[0].temperature)};

 /* Define an array of Particles to insert */
 Particle  p_data_insert[NRECORDS_INS] =
 { {"new",30,30, 3.0f, 30.0},
 {"new",40,40, 4.0f, 40.0}
 };

 /* Define field information */
 const char *field_names[NFIELDS]  =
 { "Name","Latitude", "Longitude", "Pressure", "Temperature" };
 hid_t      field_type[NFIELDS];
 hid_t      string_type;
 hid_t      file_id;
 hsize_t    chunk_size = 10;
 int        compress  = 0;
 int        *fill_data = NULL;
 hsize_t    start;      /* Record to start reading */
 hsize_t    nrecords;   /* Number of records to insert/delete */
 herr_t     status;
 hsize_t    nfields_out;
 hsize_t    nrecords_out;
 int        i;

 /* Initialize the field field_type */
 string_type = H5Tcopy( H5T_C_S1 );
 H5Tset_size( string_type, 16 );
 field_type[0] = string_type;
 field_type[1] = H5T_NATIVE_INT;
 field_type[2] = H5T_NATIVE_INT;
 field_type[3] = H5T_NATIVE_FLOAT;
 field_type[4] = H5T_NATIVE_DOUBLE;

 /* Create a new file using default properties. */
 file_id = H5Fcreate( "ex_table_08.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT );

 /* Make the table */
 status=H5TBmake_table( "Table Title",file_id,TABLE_NAME,NFIELDS,NRECORDS,
                         dst_size,field_names, dst_offset, field_type,
                         chunk_size, fill_data, compress, p_data  );

 /* Insert records */
 start    = 3;
 nrecords = NRECORDS_INS;
 status=H5TBinsert_record( file_id, TABLE_NAME, start, nrecords, dst_size, dst_offset,
  dst_sizes, p_data_insert );

 /* read the table */
 status=H5TBread_table( file_id, TABLE_NAME, dst_size, dst_offset, dst_sizes, dst_buf );

 /* get table info  */
 status=H5TBget_table_info(file_id,TABLE_NAME, &nfields_out, &nrecords_out );

 /* print */
 printf ("Table has %d fields and %d records\n",(int)nfields_out,(int)nrecords_out);

 /* print it by rows */
 for (i=0; i<nrecords_out; i++) {
  printf ("%-5s %-5d %-5d %-5f %-5f",
   dst_buf[i].name,
   dst_buf[i].lati,
   dst_buf[i].longi,
   dst_buf[i].pressure,
   dst_buf[i].temperature);
  printf ("\n");
 }


  /* close type */
 H5Tclose( string_type );

 /* close the file */
 H5Fclose( file_id );

 return 0;

}