19 |
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|
20 |
=item * |
=item * |
21 |
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22 |
PostgreSQL (tested with version 7.4.8) with development libraries |
PostgreSQL (tested with versions 7.4 and 8.0) with development libraries |
23 |
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|
24 |
=item * |
=item * |
25 |
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|
26 |
Hyper Estraier (tested with versions 0.3.9 and 0.3.10) |
Hyper Estraier (tested with 0.5.0-1.0.0+, version newer than 0.9.6 are |
27 |
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recommended) |
28 |
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|
29 |
=back |
=back |
30 |
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42 |
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43 |
=item * |
=item * |
44 |
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45 |
C<trivia.list.gz> from Internet Movie Database in data/ directory |
C<trivia.list.gz> from Internet Movie Database in C<data/> directory |
46 |
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|
47 |
=item * |
=item * |
48 |
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|
49 |
database "test" with permissions for current user |
PostgreSQL database C<test> with permissions for current user |
50 |
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|
51 |
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=item * |
52 |
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53 |
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Hyper Estraier node C<trivia> with permissions for C<admin> user. |
54 |
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55 |
=back |
=back |
56 |
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59 |
make |
make |
60 |
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|
61 |
and see sample results. You will be asked your password once (via sudo) to |
and see sample results. You will be asked your password once (via sudo) to |
62 |
install pgest.so shared library in system-wide location so that PostgreSQL |
install C<pgest.so> shared library in system-wide location so that PostgreSQL |
63 |
could access it. |
could access it. |
64 |
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|
65 |
Next, you will have to create test index. You have two options: |
Next, you will have to create test index. You have two options: |
72 |
make index |
make index |
73 |
cd .. |
cd .. |
74 |
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|
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B<Warning:> this method is incomplete and won't create node index needed |
76 |
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to run last examples in C<test.sql> correctly. Solution is simple: either |
77 |
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symlink your newly created index to Hyper Estraier C<_node> directory or |
78 |
|
create node and fill re-create index using C<estcall>. |
79 |
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|
80 |
=head2 Create index using Hyper Estraier perl bindings |
=head2 Create index using Hyper Estraier perl bindings |
81 |
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|
82 |
For this, you will have to install perl bindings from |
Perl bindings for Hyper Estraier are available at |
83 |
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|
84 |
L<http://tokuhirom.dnsalias.org/~tokuhirom/archive/hyper_estraier_wrappers-0.0.6.tar.gz> |
L<http://hyperestraier.sourceforge.net/binding/> |
85 |
|
|
86 |
If you installed bindings as documented in README file, you can issue |
However, they don't support node API (yet), so you will have to use |
87 |
following commands to create index about three times faster than using |
my modified version which is available at |
88 |
estcmd: |
L<http://svn.rot13.org/> in C<hyperestraier_wrappers> repository. |
89 |
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|
90 |
|
If you installed bindings as documented in README file, you can use |
91 |
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perl binding to create index about three times faster than using C<estcmd> |
92 |
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(to be fair, I must say that creation of intermediate files take most time, |
93 |
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not indexing). |
94 |
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|
95 |
|
However, you will first need to create node I<trivia> using Hyper Estraier's |
96 |
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administration interface at L<http://localhost:1978/masterui>. You will also |
97 |
|
need user C<admin> with password C<admin> because those values are |
98 |
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hard-coded in C<indexer.pl>. If you want to use different user on index |
99 |
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name, feel free to change script. |
100 |
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|
101 |
cd data |
cd data |
102 |
make perl |
make perl |
108 |
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|
109 |
See also included file test.sql for more examples of usage. |
See also included file test.sql for more examples of usage. |
110 |
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|
111 |
|
=head1 Usage of pgest from SQL |
112 |
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|
113 |
|
C<pgest> PostgreSQL function has two different prototypes (number of arguments) depending on usage. |
114 |
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|
115 |
|
SELECT |
116 |
|
-- columns to return (defined later) |
117 |
|
id,title,size |
118 |
|
FROM pgest( |
119 |
|
-- path to index OR URL to node, user-name and password |
120 |
|
-- you will need JUST ONE of following two lines, depending |
121 |
|
-- on your usage described below, for direct access |
122 |
|
'/full/path/to/casket', |
123 |
|
-- or for node API specify node URI, login, password |
124 |
|
-- and depth of search |
125 |
|
'http://localhost:1978/node/trivia', 'admin', 'admin', 42, |
126 |
|
-- query |
127 |
|
'blade runner', |
128 |
|
-- additional attributes, use NULL or '' to disable |
129 |
|
-- multiple attributes conditions can be separated by {{!}} |
130 |
|
'@title ISTRINC blade', |
131 |
|
-- order results by |
132 |
|
'@title STRA', |
133 |
|
-- limit, use NULL or 0 to disable |
134 |
|
null, |
135 |
|
-- offset, use NULL or 0 to disable |
136 |
|
null, |
137 |
|
-- attributes to return as columns |
138 |
|
ARRAY['@id','@title','@size'] |
139 |
|
) AS ( |
140 |
|
-- specify names and types of returned attributes |
141 |
|
id text, title text, size text |
142 |
|
); |
143 |
|
|
144 |
|
=head2 Accessing database directly |
145 |
|
|
146 |
|
If you want to access database directly (without running C<estmaster> process), first argument is full path to database file. |
147 |
|
|
148 |
|
Have in mind that C<postgres> user under which PostgreSQL is running must |
149 |
|
have read permission on Hyper Estraier database files. |
150 |
|
|
151 |
|
This will work a bit faster on really small indexes. However, when your |
152 |
|
index grows bigger, you might consider using node API to remove overhead of |
153 |
|
database opening on each query. |
154 |
|
|
155 |
|
=head2 Using index via C<estmaster> server process |
156 |
|
|
157 |
|
If first argument is URL to node (like C<http://localhost:1978/node/trivia>) |
158 |
|
and there are two additional parameters (user-name and password) after it, |
159 |
|
C<pgest> will use node API and access index through C<estmaster> process which should be running on (local or remote) machine. |
160 |
|
|
161 |
|
This will remove database opening overhead, at a cost of additional network |
162 |
|
traffic. However, you can have Hyper Estraier C<estmaster> process running on |
163 |
|
different machine or update index while doing searches, so benefits of this |
164 |
|
approach are obvious. |
165 |
|
|
166 |
=head1 Who wrote this? |
=head1 Who wrote this? |
167 |
|
|
168 |
Hyper Estraier is written by Mikio Hirabayashi. |
Hyper Estraier is written by Mikio Hirabayashi. |
169 |
|
|
170 |
|
Perl bindings for Hyper Estraier are written by MATSUNO Tokuhiro. |
171 |
|
|
172 |
PostgreSQL is written by hackers calling themselves PostgreSQL Global |
PostgreSQL is written by hackers calling themselves PostgreSQL Global |
173 |
Development Group. |
Development Group. |
174 |
|
|