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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>Heimbase</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
<link href="tabs.css" rel="stylesheet" type="text/css">
</head><body>
<p>
<a href="http://www.h5l.org/"><img src="http://www.h5l.org/keyhole-heimdal.png" alt="keyhole logo"/></a>
</p>
<!-- end of header marker -->
<!-- Generated by Doxygen 1.8.13 -->
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
$(function() {
initMenu('',false,false,'search.php','Search');
});
</script>
<div id="main-nav"></div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">Heimbase</div> </div>
</div><!--header-->
<div class="contents">
<p>Registers a DB type for use with heim_db_create().
<a href="#details">More...</a></p>
<p>Registers a DB type for use with heim_db_create(). </p>
<p>heim_db_register </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">dbtype</td><td>Name of DB type </td></tr>
<tr><td class="paramname">data</td><td>Private data argument to the dbtype's openf method </td></tr>
<tr><td class="paramname">plugin</td><td>Structure with DB type methods (function pointers)</td></tr>
</table>
</dd>
</dl>
<p>Backends that provide begin/commit/rollback methods must provide ACID semantics.</p>
<p>The registered DB type will have ACID semantics for backends that do not provide begin/commit/rollback methods but do provide lock/unlock and rdjournal/wrjournal methods (using a replay log journalling scheme).</p>
<p>If the registered DB type does not natively provide read vs. write transaction isolation but does provide a lock method then the DB will provide read/write transaction isolation.</p>
<dl class="section return"><dt>Returns</dt><dd>ENOMEM on failure, else 0.</dd></dl>
<p>Open a database of the given dbtype.</p>
<p>Database type names can be composed of one or more pseudo-DB types and one concrete DB type joined with a '+' between each. For example: "transaction+bdb" might be a Berkeley DB with a layer above that provides transactions.</p>
<p>Options may be provided via a dict (an associative array). Existing options include:</p>
<ul>
<li>"create", with any value (create if DB doesn't exist)</li>
<li>"exclusive", with any value (exclusive create)</li>
<li>"truncate", with any value (truncate the DB)</li>
<li>"read-only", with any value (disallow writes)</li>
<li>"sync", with any value (make transactions durable)</li>
<li>"journal-name", with a string value naming a journal file name</li>
</ul>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">dbtype</td><td>Name of DB type </td></tr>
<tr><td class="paramname">dbname</td><td>Name of DB (likely a file path) </td></tr>
<tr><td class="paramname">options</td><td>Options dict </td></tr>
<tr><td class="paramname">db</td><td>Output open DB handle </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>a DB handle</dd></dl>
<p>Clone (duplicate) an open DB handle.</p>
<p>This is useful for multi-threaded applications. Applications must synchronize access to any given DB handle.</p>
<p>Returns EBUSY if there is an open transaction for the input db.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>a DB handle</dd></dl>
<p>Open a transaction on the given db.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success, system error otherwise</dd></dl>
<p>Commit an open transaction on the given db.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success, system error otherwise</dd></dl>
<p>Rollback an open transaction on the given db.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success, system error otherwise</dd></dl>
<p>Get type ID of heim_db_t objects.</p>
<p>Lookup a key's value in the DB.</p>
<p>Returns 0 on success, -1 if the key does not exist in the DB, or a system error number on failure.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">key</td><td>Key </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the value (retained), if there is one for the given key</dd></dl>
<p>Set a key's value in the DB.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">key</td><td>Key </td></tr>
<tr><td class="paramname">value</td><td>Value (if NULL the key will be deleted, but empty is OK) </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success, system error otherwise</dd></dl>
<p>Delete a key and its value from the DB</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">key</td><td>Key </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success, system error otherwise</dd></dl>
<p>Iterate a callback function over keys and values from a DB.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">db</td><td>Open DB handle </td></tr>
<tr><td class="paramname">iter_data</td><td>Callback function's private data </td></tr>
<tr><td class="paramname">iter_f</td><td>Callback function, called once per-key/value pair </td></tr>
<tr><td class="paramname">error</td><td>Output error object</td></tr>
</table>
</dd>
</dl>
<p>Get a node in a heim_object tree by path</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>tree </td></tr>
<tr><td class="paramname">error</td><td>error (output) </td></tr>
<tr><td class="paramname">ap</td><td>NULL-terminated va_list of heim_object_ts that form a path</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>object (not retained) if found</dd></dl>
<p>Get a node in a tree by path, with retained reference</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>tree </td></tr>
<tr><td class="paramname">error</td><td>error (output) </td></tr>
<tr><td class="paramname">ap</td><td>NULL-terminated va_list of heim_object_ts that form a path</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>retained object if found</dd></dl>
<p>Get a node in a tree by path</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>tree </td></tr>
<tr><td class="paramname">error</td><td>error (output) </td></tr>
<tr><td class="paramname">...</td><td>NULL-terminated va_list of heim_object_ts that form a path</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>object (not retained) if found</dd></dl>
<p>Get a node in a tree by path, with retained reference</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>tree </td></tr>
<tr><td class="paramname">error</td><td>error (output) </td></tr>
<tr><td class="paramname">...</td><td>NULL-terminated va_list of heim_object_ts that form a path</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>retained object if found</dd></dl>
<p>Create a path in a heim_object_t tree</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>the tree </td></tr>
<tr><td class="paramname">size</td><td>the size of the heim_dict_t nodes to be created </td></tr>
<tr><td class="paramname">leaf</td><td>leaf node to be added, if any </td></tr>
<tr><td class="paramname">error</td><td>error (output) </td></tr>
<tr><td class="paramname">ap</td><td>NULL-terminated of path component objects</td></tr>
</table>
</dd>
</dl>
<p>Create a path of heim_dict_t interior nodes in a given heim_object_t tree, as necessary, and set/replace a leaf, if given (if leaf is NULL then the leaf is not deleted).</p>
<dl class="section return"><dt>Returns</dt><dd>0 on success, else a system error</dd></dl>
<p>Create a path in a heim_object_t tree</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>the tree </td></tr>
<tr><td class="paramname">size</td><td>the size of the heim_dict_t nodes to be created </td></tr>
<tr><td class="paramname">leaf</td><td>leaf node to be added, if any </td></tr>
<tr><td class="paramname">error</td><td>error (output) </td></tr>
<tr><td class="paramname">...</td><td>NULL-terminated list of path component objects</td></tr>
</table>
</dd>
</dl>
<p>Create a path of heim_dict_t interior nodes in a given heim_object_t tree, as necessary, and set/replace a leaf, if given (if leaf is NULL then the leaf is not deleted).</p>
<dl class="section return"><dt>Returns</dt><dd>0 on success, else a system error</dd></dl>
<p>Delete leaf node named by a path in a heim_object_t tree</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>the tree </td></tr>
<tr><td class="paramname">error</td><td>error (output) </td></tr>
<tr><td class="paramname">ap</td><td>NULL-terminated list of path component objects</td></tr>
</table>
</dd>
</dl>
<p>Dump a heimbase object to stderr (useful from the debugger!)</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">obj</td><td>object to dump using JSON or JSON-like format </td></tr>
</table>
</dd>
</dl>
</div><!-- contents -->
<hr size="1"><address style="text-align: right;"><small>
Generated on Fri Jun 7 2019 02:49:54 for Heimdalbaselibrary by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.8.13</small></address>
</body>
</html>
|
