Is it possible to implement a per database row permission system with Shiro? Suppose I have 10000 records in a table and some user can only see 1000 records... what is the best way to only return those records to the user? Is this a Shiro "use case" or I'm totally in the wrong path here? Thanks
This seems like a case for a join table.
USER_RECORD Table: USER_ID | RECORD_ID
select record_id, record_field_1, record_field_2, ...
from record r, user u, user_record ur
where ur.user_id = u.user_id
and ur.record_id = r.record_id
and u.user_id = :userId
Related
i have i would like to create a join over several tables.
table login : I would like to retrieve all the data from login
table logging : calculating the Nb_of_sessions for each db & for each a specific event type by user
table meeting : calculating the Nb_of_meetings for each db & for each user
table live : calculating the Nb_of_live for each db & for each user
I have those queries with the right results :
SELECT db.id,_id as userid,firstname,lastname
FROM "logins"."login",
UNNEST(dbs) AS a1 (db)
SELECT dbid,userid,count(distinct(sessionid)) as no_of_visits,
array_join(array_agg(value.from_url),',') as from_url
FROM "loggings"."logging"
where event='url_event'
group by db.id,userid;
SELECT dbid,userid AS userid,count(*) as nb_interviews,
array_join(array_agg(interviewer),',') as interviewer
FROM "meetings"."meeting"
group by dbid,userid;
SELECT dbid,r1.user._id AS userid,count(_id) as nb_chat
FROM "lives"."live",
UNNEST(users) AS r1 (user)
group by dbid,r1.user._id;
But when i begin to try put it all together, it seems i retrieve bad data (i have only on db retrieved) and it seems not efficient.
select a1.db.id,a._id as userid,a.firstname,a.lastname,count(rl._id) as nb_chat
FROM
"logins"."login" a,
"loggings"."logging" b,
"meetings"."meeting" c,
"lives"."live" d,
UNNEST(dbs) AS a1 (db),
UNNEST(users) AS r1 (user)
where a._id = b.userid AND a._id = c.userid AND a._id = r1.user._id
group by 1,2,3,4
Do you have an idea ?
Regards.
The easiest way is to work with with to structure the subquery and then reference them.
with parameter reference:
You can use WITH to flatten nested queries, or to simplify subqueries.
The WITH clause precedes the SELECT list in a query and defines one or
more subqueries for use within the SELECT query.
Each subquery defines a temporary table, similar to a view definition,
which you can reference in the FROM clause. The tables are used only
when the query runs.
Since you already have working sub queries, the following should work:
with logins as
(
SELECT db.id,_id as userid,firstname,lastname
FROM "logins"."login",
UNNEST(dbs) AS a1 (db)
)
,visits as
(
SELECT dbid,userid,count(distinct(sessionid)) as no_of_visits,
array_join(array_agg(value.from_url),',') as from_url
FROM "loggings"."logging"
where event='url_event'
group by db.id,userid
)
,meetings as
(
SELECT dbid,userid AS userid,count(*) as nb_interviews,
array_join(array_agg(interviewer),',') as interviewer
FROM "meetings"."meeting"
group by dbid,userid
)
,chats as
(
SELECT dbid,r1.user._id AS userid,count(_id) as nb_chat
FROM "lives"."live",
UNNEST(users) AS r1 (user)
group by dbid,r1.user._id
)
select *
from logins l
left join visits v
on l.dbid = v.dbid
and l.userid = v.userid
left join meetings m
on l.dbid = m.dbid
and l.userid = m.userid
left join chats c
on l.dbid = c.dbid
and l.userid = c.userid;
I tried to convert an SQL query into Gosu Script ( Guidewire). My script is working only for limited number of records
This is the SQL query
select PolicyNumber,* from pc_policyperiod
where ID in ( Select ownerID from pc_PRActiveWorkflow
where ForeignEntityID in (Select id from pc_workflow where State=3))
This is my script
var workFlowIDQuery = Query.make(Workflow).compare(Workflow#State,Relop.Equals,WorkflowState.TC_COMPLETED).select({QuerySelectColumns.path(Paths.make(entity.Workflow#ID))}).transformQueryRow(\row ->row.getColumn(0)).toTypedArray()
var prActiveWorkFlowQuery = Query.make(PRActiveWorkflow).compareIn(PRActiveWorkflow#ForeignEntity, workFlowIDQuery).select({QuerySelectColumns.path(Paths.make(entity.PRActiveWorkflow#Owner))}).transformQueryRow(\row -> row.getColumn(0)).toTypedArray()
var periodQuery = Query.make(PolicyPeriod).compareIn(PolicyPeriod#ID,prActiveWorkFlowQuery).select()
for(period in periodQuery){
print(period.policynmber)
}
Can anyone find a cause; why the script results in limited records or suggest improvements?
I would suggest you to write a single Gosu Query to select policyPeriod and join 3 entities with a foreign key to other entity.
I am note sure if the PolicyPeriod ID is same as the PRActiveWorkflow ID. Can you elaborate the relation between PolicyPeriod and PRActiveWorkflow entity ?
I am trying to rewrite a SQLite query in CQL.
I know that there is no EXISTS keyword in CQL. I googled it's alternative. However, I couldn't find anything.
UPDATE users SET passsword = ? WHERE user_name = ? AND EXISTS(SELECT 1 FROM
users WHERE user_name = ? AND active_status = 1)
How can I write this query in CQL? Any help is appreciated. Thank you.
This query may be broken down to 2 queries and put an additional java logic to filter the subqueries.That will be 2 calls to database layer
Resultset rs = stmt.execute ("SELECT user_name FROM
users WHERE active_status = 1");
while ( rs.next()){
stmt.executeUpdate("UPDATE users SET passsword = ? WHERE user_name = "+rs.next());
}
My application needs to get some basic data from a user table with primary key user_id - and various other data about the user from secondary tables, each of which has user_id as a foreign key. There are a bunch of these secondary tables such as name, addresss, phone, etcetera - things about a person that can change over time.
More specifically, I need only some values from the most recent row from each secondary table. Each table has a "latest" column which is unix timestamp of the most recent UPDATE or INSERT (we must not delete in this application).
The following works correctly:
SELECT u.username, u.user_id, u.password, u.email, u.active
, n.first , n.middle , n.last
, uo.organization_id /* , other_cols_from_other_tables */
FROM user u
LEFT JOIN user_org uo ON (uo.user_id = u.user_id AND
uo.latest in (select max(latest) from name uo1
where uo1.user_id = u.user_id))
/* here, other LEFT JOINs like the above one */
WHERE u.username = :username
However, a subquery solution is widely discouraged due to slowness, and some of these queries will run on every request. So I came up with the following that works in some cases and gets rid of the subquery:
SELECT u.username, u.user_id, u.password, u.email, u.active
, n.first , n.middle , n.last
, uo.organization_id /* , other_cols_from_other_tables, etc. */
FROM user u
INNER JOIN
( SELECT user_id, MAX(latest) utd
FROM user_org
GROUP BY user_id
) uo1 ON uo1.user_id = u.user_id
LEFT JOIN user_org uo
ON (uo.user_id = u.user_id and uo.latest = uo1.utd)
/* here, other clauses like the part from 'FROM' to here */
WHERE u.username = :username
The latter, unfortunately makes a hard dependence on data in the secondary table, so that the whole query fails if data is lacking in any secondary table for the particular user.
I've researched this on SO and www and there are many solutions for avoiding subqueries, but everything I've found on the subject has the issue in the main query, not in a left join.
The logic I need is "if there's data for this user in this secondary table, get the specified column(s) from the most recent row in that table, otherwise a null".
It seems to me that putting a "current row" marker column on the most recent row in each table would avoid the whole issue and run faster than any other solution, but would be against normalization (I would still have to have the 'latest' column to maintain order-able history of previous data).
Is there a solution that gets normalization + speed? This is mariadb so it needs Mysql syntax.
EDIT: Still would like a better way, but decided to go with the extra column. Now the problem described above is avoided, and the SELECT SQL is much simplified and presumably faster. The downside is adding complexity in saves, but SELECT is more frequent.
MariaDB supports ROW_NUMBER as of version 10.2:
SELECT
u.username,
u.user_id,
u.password,
u.email,
u.active,
uo.organization_id,
...
FROM user u
LEFT JOIN
(
select
user_org.*,
row_number() over(partition by user_id order by latest desc) as rn
from user_org
) uo ON uo.user_id = u.user_id AND uo.rn = 1
...
WHERE u.username = :username;
UPDATE tracks
SET People_id_Reference = (SELECT People_id
FROM People
RIGHT JOIN top100
ON
People_name=top100.artist )
WHERE People_id_Reference IS NULL;
But I get Error like this:
ERROR 1242(21000): SUBQUERY RETURNS MORE THAN ONE ROW
Can some on help me with this. Thanks in advance
The simplest way would be to append a LIMIT 1 onto the end of the subquery to only force it to return a single row.
change your code like this :
SELECT *
FROM package_reviews
WHERE post_id = ANY (SELECT post_id
FROM wp_posts
WHERE post_author=1);
this link is very useful
http://dev.mysql.com/doc/refman/5.0/en/subquery-errors.html