| [217] | 1 | <?xml version="1.0" encoding="iso-8859-1"?>
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| 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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| 3 | <refentry id="ldb.3">
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| 4 |
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| 5 | <refmeta>
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| 6 | <refentrytitle>ldb</refentrytitle>
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| 7 | <manvolnum>3</manvolnum>
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| 8 | <refmiscinfo class="source">Samba</refmiscinfo>
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| 9 | <refmiscinfo class="manual">C Library Functions</refmiscinfo>
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| 10 | <refmiscinfo class="version">3.3</refmiscinfo>
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| 11 | </refmeta>
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| 12 |
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| 13 | <refnamediv>
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| 14 | <refname>ldb</refname>
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| 15 | <refclass>The Samba Project</refclass>
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| 16 | <refpurpose>A light-weight database library</refpurpose>
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| 17 | </refnamediv>
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| 18 |
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| 19 | <refsynopsisdiv>
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| 20 | <synopsis>#include <ldb.h></synopsis>
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| 21 | </refsynopsisdiv>
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| 22 |
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| 23 | <refsect1>
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| 24 | <title>description</title>
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| 25 |
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| 26 | <para>
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| 27 | ldb is a light weight embedded database library and API. With a
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| 28 | programming interface that is very similar to LDAP, ldb can store its
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| 29 | data either in a tdb(3) database or in a real LDAP database.
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| 30 | </para>
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| 31 |
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| 32 | <para>
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| 33 | When used with the tdb backend ldb does not require any database
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| 34 | daemon. Instead, ldb function calls are processed immediately by the
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| 35 | ldb library, which does IO directly on the database, while allowing
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| 36 | multiple readers/writers using operating system byte range locks. This
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| 37 | leads to an API with very low overheads, often resulting in speeds of
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| 38 | more than 10x what can be achieved with a more traditional LDAP
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| 39 | architecture.
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| 40 | </para>
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| 41 |
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| 42 | <para>
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| 43 | In a taxonomy of databases ldb would sit half way between key/value
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| 44 | pair databases (such as berkley db or tdb) and a full LDAP
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| 45 | database. With a structured attribute oriented API like LDAP and good
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| 46 | indexing capabilities, ldb can be used for quite sophisticated
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| 47 | applications that need a light weight database, without the
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| 48 | administrative overhead of a full LDAP installation.
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| 49 | </para>
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| 50 |
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| 51 | <para>
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| 52 | Included with ldb are a number of useful command line tools for
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| 53 | manipulating a ldb database. These tools are similar in style to the
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| 54 | equivalent ldap command line tools.
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| 55 | </para>
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| 56 |
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| 57 | <para>
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| 58 | In its default mode of operation with a tdb backend, ldb can also be
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| 59 | seen as a "schema-less LDAP". By default ldb does not require a
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| 60 | schema, which greatly reduces the complexity of getting started with
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| 61 | ldb databases. As the complexity of you application grows you can take
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| 62 | advantage of some of the optional schema-like attributes that ldb
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| 63 | offers, or you can migrate to using the full LDAP api while keeping
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| 64 | your exiting ldb code.
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| 65 | </para>
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| 66 |
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| 67 | <para>
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| 68 | If you are new to ldb, then I suggest starting with the manual pages
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| 69 | for ldbsearch(1) and ldbedit(1), and experimenting with a local
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| 70 | database. Then I suggest you look at the ldb_connect(3) and
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| 71 | ldb_search(3) manual pages.
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| 72 | </para>
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| 73 | </refsect1>
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| 74 |
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| 75 | <refsect1>
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| 76 | <title>TOOLS</title>
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| 77 |
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| 78 | <itemizedlist>
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| 79 | <listitem><para>
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| 80 | <application>ldbsearch(1)</application>
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| 81 | - command line ldb search utility
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| 82 | </para></listitem>
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| 83 |
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| 84 | <listitem><para>
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| 85 | <application>ldbedit(1)</application>
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| 86 | - edit all or part of a ldb database using your favourite editor
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| 87 | </para></listitem>
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| 88 |
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| 89 | <listitem><para>
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| 90 | <application>ldbadd(1)</application>
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| 91 | - add records to a ldb database using LDIF formatted input
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| 92 | </para></listitem>
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| 93 |
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| 94 | <listitem><para>
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| 95 | <application>ldbdel(1)</application>
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| 96 | - delete records from a ldb database
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| 97 | </para></listitem>
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| 98 |
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| 99 | <listitem><para>
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| 100 | <application>ldbmodify(1)</application>
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| 101 | - modify records in a ldb database using LDIF formatted input
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| 102 | </para></listitem>
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| 103 | </itemizedlist>
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| 104 | </refsect1>
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| 105 |
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| 106 | <refsect1>
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| 107 | <title>FUNCTIONS</title>
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| 108 |
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| 109 | <itemizedlist>
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| 110 | <listitem><para>
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| 111 | <function>ldb_connect(3)</function>
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| 112 | - connect to a ldb backend
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| 113 | </para></listitem>
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| 114 |
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| 115 | <listitem><para>
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| 116 | <function>ldb_search(3)</function>
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| 117 | - perform a database search
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| 118 | </para></listitem>
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| 119 |
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| 120 | <listitem><para>
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| 121 | <function>ldb_add(3)</function>
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| 122 | - add a record to the database
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| 123 | </para></listitem>
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| 124 |
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| 125 | <listitem><para>
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| 126 | <function>ldb_delete(3)</function>
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| 127 | - delete a record from the database
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| 128 | </para></listitem>
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| 129 |
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| 130 | <listitem><para>
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| 131 | <function>ldb_modify(3)</function>
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| 132 | - modify a record in the database
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| 133 | </para></listitem>
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| 134 |
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| 135 | <listitem><para>
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| 136 | <function>ldb_errstring(3)</function>
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| 137 | - retrieve extended error information from the last operation
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| 138 | </para></listitem>
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| 139 |
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| 140 | <listitem><para>
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| 141 | <function>ldb_ldif_write(3)</function>
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| 142 | - write a LDIF formatted message
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| 143 | </para></listitem>
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| 144 |
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| 145 | <listitem><para>
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| 146 | <function>ldb_ldif_write_file(3)</function>
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| 147 | - write a LDIF formatted message to a file
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| 148 | </para></listitem>
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| 149 |
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| 150 | <listitem><para>
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| 151 | <function>ldb_ldif_read(3)</function>
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| 152 | - read a LDIF formatted message
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| 153 | </para></listitem>
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| 154 |
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| 155 | <listitem><para>
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| 156 | <function>ldb_ldif_read_free(3)</function>
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| 157 | - free the result of a ldb_ldif_read()
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| 158 | </para></listitem>
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| 159 |
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| 160 | <listitem><para>
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| 161 | <function>ldb_ldif_read_file(3)</function>
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| 162 | - read a LDIF message from a file
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| 163 | </para></listitem>
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| 164 |
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| 165 | <listitem><para>
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| 166 | <function>ldb_ldif_read_string(3)</function>
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| 167 | - read a LDIF message from a string
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| 168 | </para></listitem>
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| 169 |
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| 170 | <listitem><para>
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| 171 | <function>ldb_msg_find_element(3)</function>
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| 172 | - find an element in a ldb_message
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| 173 | </para></listitem>
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| 174 |
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| 175 | <listitem><para>
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| 176 | <function>ldb_val_equal_exact(3)</function>
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| 177 | - compare two ldb_val structures
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| 178 | </para></listitem>
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| 179 |
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| 180 | <listitem><para>
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| 181 | <function>ldb_msg_find_val(3)</function>
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| 182 | - find an element by value
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| 183 | </para></listitem>
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| 184 |
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| 185 | <listitem><para>
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| 186 | <function>ldb_msg_add_empty(3)</function>
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| 187 | - add an empty message element to a ldb_message
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| 188 | </para></listitem>
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| 189 |
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| 190 |
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| 191 | <listitem><para>
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| 192 | <function>ldb_msg_add(3)</function>
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| 193 | - add a non-empty message element to a ldb_message
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| 194 | </para></listitem>
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| 195 |
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| 196 |
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| 197 | <listitem><para>
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| 198 | <function>ldb_msg_element_compare(3)</function>
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| 199 | - compare two ldb_message_element structures
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| 200 | </para></listitem>
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| 201 |
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| 202 |
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| 203 | <listitem><para>
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| 204 | <function>ldb_msg_find_int(3)</function>
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| 205 | - return an integer value from a ldb_message
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| 206 | </para></listitem>
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| 207 |
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| 208 |
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| 209 | <listitem><para>
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| 210 | <function>ldb_msg_find_uint(3)</function>
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| 211 | - return an unsigned integer value from a ldb_message
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| 212 | </para></listitem>
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| 213 |
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| 214 |
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| 215 | <listitem><para>
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| 216 | <function>ldb_msg_find_double(3)</function>
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| 217 | - return a double value from a ldb_message
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| 218 | </para></listitem>
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| 219 |
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| 220 |
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| 221 | <listitem><para>
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| 222 | <function>ldb_msg_find_string(3)</function>
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| 223 | - return a string value from a ldb_message
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| 224 | </para></listitem>
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| 225 |
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| 226 |
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| 227 | <listitem><para>
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| 228 | <function>ldb_set_alloc(3)</function>
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| 229 | - set the memory allocation function to be used by ldb
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| 230 | </para></listitem>
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| 231 |
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| 232 |
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| 233 | <listitem><para>
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| 234 | <function>ldb_set_debug(3)</function>
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| 235 | - set a debug handler to be used by ldb
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| 236 | </para></listitem>
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| 237 |
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| 238 |
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| 239 | <listitem><para>
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| 240 | <function>ldb_set_debug_stderr(3)</function>
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| 241 | - set a debug handler for stderr output
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| 242 | </para></listitem>
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| 243 | </itemizedlist>
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| 244 | </refsect1>
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| 245 |
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| 246 | <refsect1>
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| 247 | <title>Author</title>
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| 248 |
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| 249 | <para>
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| 250 | ldb was written by
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| 251 | <ulink url="http://samba.org/~tridge/">Andrew Tridgell</ulink>.
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| 252 | </para>
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| 253 |
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| 254 | <para>
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| 255 | If you wish to report a problem or make a suggestion then please see
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| 256 | the <ulink url="http://ldb.samba.org/"/> web site for
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| 257 | current contact and maintainer information.
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| 258 | </para>
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| 259 |
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| 260 | <para>
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| 261 | ldb is released under the GNU Lesser General Public License version 2
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| 262 | or later. Please see the file COPYING for license details.
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| 263 | </para>
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| 264 | </refsect1>
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| 265 | </refentry>
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