1Genders(3)            User Contributed Perl Documentation           Genders(3)
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NAME

6       Genders - Perl library for querying a genders file
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SYNOPSIS

9        use Genders;
10
11        $Genders::GENDERS_DEFAULT_FILE;
12
13        $obj = Genders->new([$filename])
14
15        $obj->debug($num)
16
17        $obj->getnodename()
18        $obj->getnodes([$attr, [$val]])
19        $obj->getattr([$node])
20        $obj->getattr_all()
21        $obj->getattrval($attr, [$node])
22
23        $obj->testattr($attr, [$node])
24        $obj->testattrval($attr, $val, [$node])
25
26        $obj->isnode([$node])
27        $obj->isattr($attr)
28        $obj->isattrval($attr, $val)
29
30        $obj->index_attrvals($attr)
31
32        $obj->query($query)
33        $obj->testquery($query, [$node])
34

DESCRIPTION

36       This package provides a perl interface for querying a genders file.
37
38       Genders->new([$filename])
39           Creates a Genders object and load genders data from the specified
40           file.  If the genders file is not specified, the default genders
41           file will be used.  Returns undef if file cannot be read.
42
43       $obj->debug($num)
44           Set the debug level in the genders object.  By default, the debug
45           level is 0 and all debugging is turned off.  To turn it on, set the
46           level to 1.
47
48       $obj->getnodename()
49           Returns the name of the current node.
50
51       $obj->getnodes([$attr, [$val]])
52           Returns a list of nodes with the specified attribute and value.  If
53           a value is not specified only the attribute is considered.  If the
54           attribute is not specified, all nodes listed in the genders file
55           are returned.
56
57       $obj->getattr([$node])
58           Returns a list of attributes for the specified node.  If the node
59           is not specified, the local node's attributes returned.
60
61       $obj->getattr_all()
62           Returns a list of all attributes listed in the genders file.
63
64       $obj->getattrval($attr, [$node])
65           Returns the value of the specified attribute for the specified
66           node.  If the attribute does not exist or the attribute has no
67           value, an empty string is returned.  If the node is not specified,
68           the local node's attribute value is returned.
69
70       $obj->testattr($attr, [$node])
71           Returns 1 if the specified node has the specified attribute, 0 if
72           it does not.  If the node is not specified, the local node is
73           checked.
74
75       $obj->testattrval($attr, $val, [$node])
76           Returns 1 if the specified node has the specified attribute and
77           value, 0 if it does not.  If the node is not specified, the local
78           node is checked.
79
80       $obj->isnode([$node])
81           Returns 1 if the specified node is listed in the genders file, 0 if
82           it is not.  If the node is not specified, the local node is
83           checked.
84
85       $obj->isattr($attr)
86           Returns 1 if the specified attribute is listed in the genders file,
87           0 if it is not.
88
89       $obj->isattrval($attr, $val)
90           Returns 1 if the specified attribute is equal to the specified
91           value for some node in the genders file, 0 if it is not.
92
93       $obj->index_attrvals($attr)
94           Internally indexes genders attribute values for faster search
95           times.  Subsequent calls with a different attribute will overwrite
96           earlier indexes.
97
98       $obj->query($query)
99           Returns a list of nodes specified by a genders query.  A genders
100           query is based on the union, intersection, set difference, or
101           complement between genders attributes and values.  Union is
102           represented by two pipe symbols ('||'), intersection by two
103           ampersand symbols ('&&'), difference by two minus symbols ('--'),
104           and complement by a tilde ('~') Operations are performed from left
105           to right.  Parentheses may be used to change the order of
106           operations.  For example, the following query would retrieve all
107           nodes other than management or login nodes: "~(mgmt||login)".  If
108           the query is not specified, all nodes listed in the genders file
109           are returned.
110
111       $obj->testquery($query, [$node])
112           Returns 1 if the specified node meets the conditions of the
113           specified query, 0 if it does not.  If the node is not specified,
114           the local node is checked.
115

AUTHOR

117       Albert Chu <chu11@llnl.gov>
118

SEE ALSO

120       Libgenders.
121
122       libgenders.
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126perl v5.28.0                      2018-06-27                        Genders(3)
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