Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
jio
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Milestones
Merge Requests
0
Merge Requests
0
Analytics
Analytics
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Commits
Issue Boards
Open sidebar
Aurélien Vermylen
jio
Commits
9ca13f16
Commit
9ca13f16
authored
Jan 28, 2013
by
Sven Franck
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
indexStorage: updated index structure to allow multi-field indices
parent
59280bf3
Changes
1
Show whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
134 additions
and
7 deletions
+134
-7
src/jio.storage/indexstorage.js
src/jio.storage/indexstorage.js
+134
-7
No files found.
src/jio.storage/indexstorage.js
View file @
9ca13f16
...
...
@@ -26,6 +26,18 @@
* "keyword_def": ["some_id"]
* }
* }
* NOTES:
* It may be difficult to "un-sort" multi-field indices, like
* indexAB, because all keywords will be listed regrardless
* of underlying field, so an index on author and year would produce
* two entries per record like:
*
* "William Shakespeare":["id_Romeo_and_Juliet", "id_Othello"],
* "1591":["id_Romeo_and_Juliet"],
* "1603":["id_Othello"]
*
* So for direct lookups, this should be convient, but for other types
* of queries, it depends
*/
jIO
.
addStorageType
(
'
indexed
'
,
function
(
spec
,
my
)
{
...
...
@@ -131,6 +143,23 @@ jIO.addStorageType('indexed', function (spec, my) {
return
false
;
};
/**
* Get element position in array
* @method getPositionInArray
* @param {object} indices The index file
* @param {object} indices The index file
* @returns {number} i Position of element in array
*/
priv
.
getPositionInArray
=
function
(
element
,
array
)
{
var
i
;
for
(
i
=
0
;
i
<
array
.
length
;
i
+=
1
)
{
if
(
array
[
i
]
===
element
)
{
return
i
;
}
}
return
null
;
};
/**
* Find id in indices
* @method isDocidInIndex
...
...
@@ -202,7 +231,7 @@ jIO.addStorageType('indexed', function (spec, my) {
// loop indices
for
(
i
=
0
;
i
<
l
;
i
+=
1
)
{
// index object (reference and current
iteration)
// index object (reference and current
-
iteration)
index
=
{};
index
.
reference
=
priv
.
indices
[
i
];
index
.
reference_size
=
index
.
reference
.
fields
.
length
;
...
...
@@ -218,8 +247,7 @@ jIO.addStorageType('indexed', function (spec, my) {
// add a new entry
index
.
field_array
.
push
(
value
);
// remove existing entries with same docid
// because items are stored as "keyword:id" pairs this is tricky
// remove existing entries with same docid (put-update!)
if
(
index
.
current_size
>
0
)
{
key
=
priv
.
searchIndexByValue
(
indices
[
index
.
reference
.
name
],
doc
.
_id
,
"
key
"
);
...
...
@@ -246,8 +274,100 @@ jIO.addStorageType('indexed', function (spec, my) {
return
indices
;
};
priv
.
getDocContent
=
function
()
{
/**
* Check available indices to find the best one. This index must have
* all "id" parameters of the query and if it also contains all values from
* the select-list, it can be used to run the whole query plus return results
* @method findBestIndexForQuery
* @param {object} indices The index file
* @returns {object} response The query object constructed from Index file
*/
priv
.
findBestIndexForQuery
=
function
(
indices
,
syntax
)
{
var
i
,
j
,
k
,
l
,
m
,
n
,
o
,
p
,
search_ids
=
[],
select_ids
=
syntax
.
filter
.
select_list
,
index
,
query_param
,
search_param
,
use_index
=
[];
// array of necessary query ids
if
(
syntax
.
query
.
query_list
===
undefined
)
{
search_ids
.
push
(
syntax
.
query
.
id
);
}
else
{
for
(
j
=
0
;
j
<
syntax
.
query
.
query_list
.
length
;
j
+=
1
)
{
search_ids
.
push
(
syntax
.
query
.
query_list
[
j
].
id
);
}
}
// loop indices
for
(
i
=
0
;
i
<
priv
.
indices
.
length
;
i
+=
1
)
{
index
=
{};
index
.
reference
=
priv
.
indices
[
i
];
index
.
reference_size
=
index
.
reference
.
fields
.
length
;
o
=
search_ids
.
length
;
for
(
k
=
0
;
k
<
o
;
k
+=
1
)
{
// always check the first element in the array because it's spliced
query_param
=
search_ids
[
0
];
for
(
l
=
0
;
l
<
index
.
reference_size
;
l
+=
1
)
{
if
(
query_param
===
index
.
reference
.
fields
[
l
])
{
search_ids
.
splice
(
priv
.
getPositionInArray
(
query_param
,
search_ids
),
1
);
}
}
}
// empty search_ids = index can be used, now check results
if
(
search_ids
.
length
===
0
)
{
// can't return results if empty select_list (all fields)
if
(
select_ids
.
length
===
0
)
{
use_index
.
push
({
"
name
"
:
index
.
reference
.
name
,
"
search
"
:
true
,
"
results
"
:
false
});
}
else
{
p
=
select_ids
.
length
;
for
(
m
=
0
;
m
<
p
;
m
+=
1
)
{
search_param
=
select_ids
[
0
];
for
(
n
=
0
;
n
<
index
.
reference_size
;
n
+=
1
)
{
if
(
search_param
===
index
.
reference
.
fields
[
n
])
{
select_ids
.
splice
(
priv
.
getPositionInArray
(
search_param
,
select_ids
),
1
);
}
}
}
// empty select_list = index can do do query and results!
if
(
select_ids
.
length
===
0
)
{
use_index
.
push
({
"
name
"
:
index
.
reference
.
name
,
"
search
"
:
true
,
"
results
"
:
true
});
}
else
{
use_index
.
push
({
"
name
"
:
index
.
reference
.
name
,
"
search
"
:
true
,
"
results
"
:
false
});
}
}
}
}
return
use_index
;
};
/**
* Converts the indices file into an object usable by complex queries
* @method convertIndicesToQueryObject
* @param {object} indices The index file
* @returns {object} response The query object constructed from Index file
*/
priv
.
convertIndicesToQueryObject
=
function
(
indices
,
query_syntax
)
{
var
use_index
=
priv
.
findBestIndexForQuery
(
indices
,
query_syntax
);
return
indices
;
};
/**
* Build the alldocs response from the index file (overriding substorage)
...
...
@@ -638,7 +758,7 @@ jIO.addStorageType('indexed', function (spec, my) {
// ]
//}
that
.
allDocs
=
function
(
command
)
{
var
f
=
{},
option
,
all_docs_response
;
var
f
=
{},
option
,
all_docs_response
,
query_object
,
query_syntax
;
option
=
command
.
cloneOption
();
if
(
option
.
max_retry
===
0
)
{
option
.
max_retry
=
3
;
...
...
@@ -651,7 +771,14 @@ jIO.addStorageType('indexed', function (spec, my) {
priv
.
index_suffix
,
option
,
function
(
response
)
{
if
(
command
.
getOption
(
'
include_docs
'
))
{
query_syntax
=
command
.
getOption
(
'
query
'
);
if
(
query_syntax
!==
undefined
)
{
// check to see if index can do the job
query_object
=
priv
.
convertIndicesToQueryObject
(
response
,
query_syntax
);
}
else
if
(
command
.
getOption
(
'
include_docs
'
))
{
priv
.
allDocsResponseFromIndex
(
response
,
true
,
option
);
}
else
{
all_docs_response
=
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment