Re: [basex-talk] Ask about AlterDB
Please invest some more time, and send me examples that run out of the box. In the given case, I had to rename the class constructor to Case1; next, I was getting the error Event 'event100' is unknown. More to that, you were talking about databases, but I don’t see anything related to databases in your tests. If you create a BaseXServer instance, you should generally use ClientSession instances whenever you communicate with the server, and avoid the creation of new Context instances. You may want to have a look at the EventTest class [1], which demonstrates how multiple clients can concurrently watch events in the client/server architecture. [1] https://github.com/BaseXdb/basex/blob/master/src/test/java/org/basex/test/server/EventTest.java ___ On Tue, Mar 26, 2013 at 3:57 AM, truc@emotive.de wrote: Thank you for your answer. I give you some cases why I can't use many contexts to store many databases. Case1: create only one BaseXServer. In this case, the context of the BaseXServer is not related to contexts that I store my databases. Thus, no contexts can work with events. Case2: create one BaseXServer for each context. In this case, only one the first context (and event) can work with events. These are the reasons why I have to use ONE context to store many databases. Quoting Christian Grün christian.gr...@gmail.com: Thanks. I?m not sure what you tried to do with event? Do you have a little example or some more information? ___ Thank you for you answer. I have ever used many contexts to store many databases but the EVENT coundn't work properly. Dimitar has adviced me that I should use one context for many databases. It has worked well until I used AlterDB. How should I do to use many databases on one context? Quoting Christian Grün christian.gr...@gmail.com: Thanks for your response. I use pin so that a context can store many databases. If I don't use pin, a newest database will override the current database (see context.dbs.list.elementData). Please tell me how can I use many database on one context. ?I see. Sounds like a dangerous journey, because the whole architecture relies on the concept that only one database is opened in the current context. Why do you want to keep more than one database opened at the same time? Christian __ Quoting Christian Grün christian.gr...@gmail.com: Hi, it?s probably a better idea to avoid explicit (un)pinning of nodes; all commands should correctly do this for you. Out of interest: why did you choose to do pinning by yourself? Best, Christian _ Dear BaseX team, I want to ask you how to use the class AlterDB to change a database name. It always throws the exception DB_PINNED_X although I use unpin before using AlterDB. I found the problem is that the method TableDiskAccess.locked(db, this) always returns true. Please see the attachment and help me solve the problem. Thanks in advance. ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
Re: [basex-talk] Ask about AlterDB
I was getting the error Event 'event100' is unknown.
Response: the event will be created If It doesn't exist. I don't know
why you get that error.
if (context.events.get(eventName) == null)
{
createEvent.execute(context);
}
More to that, you were talking about databases, but I don?t see
anything related to databases in your tests.
Reponse: I just try to show you what happens if I use many contexts
(of course for storing many databases). Events can't work with many
contexts.
And avoid the creation of new Context instances
Response: That why I asked you how should I need to do when I use more
than one database on a context.
Quoting Christian Grün christian.gr...@gmail.com:
Please invest some more time, and send me examples that run out of the
box. In the given case, I had to rename the class constructor to
Case1; next, I was getting the error Event 'event100' is unknown.
More to that, you were talking about databases, but I don?t see
anything related to databases in your tests.
If you create a BaseXServer instance, you should generally use
ClientSession instances whenever you communicate with the server, and
avoid the creation of new Context instances. You may want to have a
look at the EventTest class [1], which demonstrates how multiple
clients can concurrently watch events in the client/server
architecture.
[1]
https://github.com/BaseXdb/basex/blob/master/src/test/java/org/basex/test/server/EventTest.java
___
On Tue, Mar 26, 2013 at 3:57 AM, truc@emotive.de wrote:
Thank you for your answer.
I give you some cases why I can't use many contexts to store many databases.
Case1: create only one BaseXServer. In this case, the context of the
BaseXServer is not related to contexts that I store my databases. Thus, no
contexts can work with events.
Case2: create one BaseXServer for each context. In this case, only one the
first context (and event) can work with events.
These are the reasons why I have to use ONE context to store many databases.
Quoting Christian Grün christian.gr...@gmail.com:
Thanks. I?m not sure what you tried to do with event? Do you have a
little example or some more information?
___
Thank you for you answer. I have ever used many contexts to store many
databases but the EVENT coundn't work properly. Dimitar has adviced me
that
I should use one context for many databases. It has worked well until I
used
AlterDB.
How should I do to use many databases on one context?
Quoting Christian Grün christian.gr...@gmail.com:
Thanks for your response. I use pin so that a context can store many
databases. If I don't use pin, a newest database will override the
current
database (see context.dbs.list.elementData). Please tell me how can I
use
many database on one context.
?I see. Sounds like a dangerous journey, because the whole
architecture relies on the concept that only one database is opened in
the current context. Why do you want to keep more than one database
opened at the same time?
Christian
__
Quoting Christian Grün christian.gr...@gmail.com:
Hi,
it?s probably a better idea to avoid explicit (un)pinning of nodes;
all commands should correctly do this for you. Out of interest: why
did you choose to do pinning by yourself?
Best,
Christian
_
Dear BaseX team,
I want to ask you how to use the class AlterDB to change a database
name.
It
always throws the exception DB_PINNED_X although I use unpin before
using
AlterDB. I found the problem is that the method
TableDiskAccess.locked(db,
this) always returns true. Please see the attachment and help me
solve
the
problem.
Thanks in advance.
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Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents
Hi Fabrice, we just uploaded a fix (hopefully) for this problem. The maximum number of displayed nodes is now limited. Would be nice if you could report your experience with the current solution, which will be contained in the next latest stable release. Cheers, Lukas On Fri, Mar 15, 2013 at 9:36 AM, Fabrice Etanchaud fetanch...@questel.comwrote: Dear all, ** ** When dealing with collections containing more than a million documents,*** * The Properties window freezes the entire GUI while trying to display the documents’ list. How could I disable the treeview for such collections ? ** ** I have to deal with such collections because XQuery Update on many many nodes takes a long long time to complete, So add/replace/delete is a good alternative. ** ** Thank you for your continuous help and your great XNDB. ** ** Last : is the new ADDCACHE option the way to add data near the node count limit without corrupting the collection ? ** ** Best regards, Fabrice Questel-Orbit ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
Re: [basex-talk] Ask about AlterDB
Response: That why I asked you how should I need to do when I use more than one database on a context. With XQuery, you can open and process as many databases as you want; see e.g: for $c in 1 to 100 let $dbname := db || $c return db:open($dbname) There will be no need at all to explicitly bind databases to a context. Hope this helps, Christian ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents
Dear Lukas, thank you for your help ! Is this fix present in the delivery of this morning ? The problem is still present. Best regards, Fabrice The heart of fools is in their mouth, but the mouth of the wise men is in their heart -- Siracide De : Lukas Kircher [mailto:lukaskirch...@gmail.com] Envoyé : mardi 26 mars 2013 10:26 À : Fabrice Etanchaud Cc : basex-talk@mailman.uni-konstanz.de Objet : Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents Hi Fabrice, we just uploaded a fix (hopefully) for this problem. The maximum number of displayed nodes is now limited. Would be nice if you could report your experience with the current solution, which will be contained in the next latest stable release. Cheers, Lukas On Fri, Mar 15, 2013 at 9:36 AM, Fabrice Etanchaud fetanch...@questel.commailto:fetanch...@questel.com wrote: Dear all, When dealing with collections containing more than a million documents, The Properties window freezes the entire GUI while trying to display the documents' list. How could I disable the treeview for such collections ? I have to deal with such collections because XQuery Update on many many nodes takes a long long time to complete, So add/replace/delete is a good alternative. Thank you for your continuous help and your great XNDB. Last : is the new ADDCACHE option the way to add data near the node count limit without corrupting the collection ? Best regards, Fabrice Questel-Orbit ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.demailto:BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents
Hi Fabrice, and thanks Lukas, I’ve just uploaded another snapshot; could you give it another try? Best, Christian ___ On Tue, Mar 26, 2013 at 2:40 PM, Fabrice Etanchaud fetanch...@questel.com wrote: Dear Lukas, thank you for your help ! Is this fix present in the delivery of this morning ? The problem is still present. Best regards, Fabrice “The heart of fools is in their mouth, but the mouth of the wise men is in their heart” -- Siracide De : Lukas Kircher [mailto:lukaskirch...@gmail.com] Envoyé : mardi 26 mars 2013 10:26 À : Fabrice Etanchaud Cc : basex-talk@mailman.uni-konstanz.de Objet : Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents Hi Fabrice, we just uploaded a fix (hopefully) for this problem. The maximum number of displayed nodes is now limited. Would be nice if you could report your experience with the current solution, which will be contained in the next latest stable release. Cheers, Lukas On Fri, Mar 15, 2013 at 9:36 AM, Fabrice Etanchaud fetanch...@questel.com wrote: Dear all, When dealing with collections containing more than a million documents, The Properties window freezes the entire GUI while trying to display the documents’ list. How could I disable the treeview for such collections ? I have to deal with such collections because XQuery Update on many many nodes takes a long long time to complete, So add/replace/delete is a good alternative. Thank you for your continuous help and your great XNDB. Last : is the new ADDCACHE option the way to add data near the node count limit without corrupting the collection ? Best regards, Fabrice Questel-Orbit ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents
Dear all, I'm sorry but I see no difference. That's not a blocking issue at all. And once again thank you for your fantastic XNDB. Best, Fabrice -Message d'origine- De : Christian Grün [mailto:christian.gr...@gmail.com] Envoyé : mardi 26 mars 2013 14:50 À : Fabrice Etanchaud Cc : basex-talk@mailman.uni-konstanz.de Objet : Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents Hi Fabrice, and thanks Lukas, I've just uploaded another snapshot; could you give it another try? Best, Christian ___ On Tue, Mar 26, 2013 at 2:40 PM, Fabrice Etanchaud fetanch...@questel.com wrote: Dear Lukas, thank you for your help ! Is this fix present in the delivery of this morning ? The problem is still present. Best regards, Fabrice The heart of fools is in their mouth, but the mouth of the wise men is in their heart -- Siracide De : Lukas Kircher [mailto:lukaskirch...@gmail.com] Envoyé : mardi 26 mars 2013 10:26 À : Fabrice Etanchaud Cc : basex-talk@mailman.uni-konstanz.de Objet : Re: [basex-talk] [GUI] Properties window is frozen for a DB with a lot of documents Hi Fabrice, we just uploaded a fix (hopefully) for this problem. The maximum number of displayed nodes is now limited. Would be nice if you could report your experience with the current solution, which will be contained in the next latest stable release. Cheers, Lukas On Fri, Mar 15, 2013 at 9:36 AM, Fabrice Etanchaud fetanch...@questel.com wrote: Dear all, When dealing with collections containing more than a million documents, The Properties window freezes the entire GUI while trying to display the documents' list. How could I disable the treeview for such collections ? I have to deal with such collections because XQuery Update on many many nodes takes a long long time to complete, So add/replace/delete is a good alternative. Thank you for your continuous help and your great XNDB. Last : is the new ADDCACHE option the way to add data near the node count limit without corrupting the collection ? Best regards, Fabrice Questel-Orbit ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk ___ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
[basex-talk] xquery help
Hi,
I got stuck with an XQuery, could you please help?
I have data like this:
collection
entry
q[text() contains text ('Johann' ftand 'Ballhorn') distance at most 5 words
ordered][self::*:p or self::*:q]/q
id12345/id
pbey welchen die Verbesserungen durch Johann Ballhorn öfter vorkommen als
man glauben sollte./p
/entry
entry…
/collection
All I want to get back is the p node with the content of the q node applied
to p using ft:mark, i.e., the node with highlighting like this:
pbey welchen die Verbesserungen durch markJohann/mark
markBallhorn/mark öfter vorkommen als man glauben sollte./p
But I don't manage to call ft:mark with the correct parameters.
I tried variants of this:
for $i at $p in //entry
let $q := $i/q
return ft:mark($i $q)
But this gives
Expecting closing bracket for 'ft:mark(…'
I think I have to use concat() in some way, but how?
Thanks in advance
Cerstin
--
Dr. phil. Cerstin Mahlow
Universität Basel
Departement Sprach- und Literaturwissenschaften
Fachbereich Deutsche Sprach- und Literaturwissenschaft
Nadelberg 4
4051 Basel
Schweiz
Tel: +41 61 267 07 65
Fax: +41 61 267 34 40
Mail: cerstin.mah...@unibas.ch
Web: http://www.oldphras.net
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Re: [basex-talk] xquery help
Hi Cerstin,
On 26.03.2013, at 16:07, Cerstin Elisabeth Mahlow cerstin.mah...@unibas.ch
wrote:
Hi,
I got stuck with an XQuery, could you please help?
I have data like this:
collection
entry
q[text() contains text ('Johann' ftand 'Ballhorn') distance at most 5
words ordered][self::*:p or self::*:q]/q
id12345/id
pbey welchen die Verbesserungen durch Johann Ballhorn öfter vorkommen als
man glauben sollte./p
/entry
entry…
/collection
All I want to get back is the p node with the content of the q node
applied to p using ft:mark, i.e., the node with highlighting like this:
pbey welchen die Verbesserungen durch markJohann/mark
markBallhorn/mark öfter vorkommen als man glauben sollte./p
But I don't manage to call ft:mark with the correct parameters.
I tried variants of this:
for $i at $p in //entry
let $q := $i/q
return ft:mark($i $q)
But this gives
Expecting closing bracket for 'ft:mark(…'
I think I have to use concat() in some way, but how?
Thanks in advance
if I got you right you want to evaluate a query, such as
ft:mark(pbey welchen die Verbesserungen durch Johann Ballhorn öfter vorkommen
als man glauben sollte./p[./text() contains text ('Johann' ftand 'Ballhorn')
distance at most 5 words ordered][self::*:p or self::*:q])
which you construct from your collection?
pbey welchen .../p is a database node and
q[text() contains text ('Johann' ... ]/q holds a query predicate as string
So you dynamically construct a query string that you like to evaluate?
==
Since ft:mark() operates on database nodes a simply typing
ft:mark(pbey welchen die Verbesserungen durch Johann Ballhorn öfter vorkommen
als man glauben sollte./p[./text() contains text ('Johann' ftand 'Ballhorn')
distance at most 5 words ordered][self::*:p or self::*:q])
in BaseXGUi results in
[BXDB0001] ft:mark(element p { (bey welchen die Verbesserungen durch Johann
Ballhorn öfter vorkommen als man glauben sollte.) }[text() contains text
(Johann ftand Ballhorn) ordered distance(0-5 word)][(self::*:p or
self::*:q)]): database node expected.
==
However, we can create a database from your input data to set up a running
example:
db:create('cm', collection
entry
q[text() contains text ('Johann' ftand 'Ballhorn') distance at most 5
words ordered][self::*:p or self::*:q]/q
id12345/id
pbey welchen die Verbesserungen durch Johann Ballhorn öfter vorkommen als
man glauben sollte./p
/entry
/collection, cm.xml)
==
Query:
let $in := doc('cm')
let $p := $in//p
let $q := $in//q
return
( $p, $q )
yields
pbey welchen die Verbesserungen durch Johann Ballhorn öfter vorkommen als man
glauben sollte./p
q[text() contains text ('Johann' ftand 'Ballhorn') distance at most 5 words
ordered][self::*:p or self::*:q]/q
==
let $in := doc('cm')
let $p := $in//p
let $q := $in//q
let $qs := concat('ft:mark($p', $q, ')')
return
$qs
constructs the query string
ft:mark($p[text() contains text ('Johann' ftand 'Ballhorn') distance at most 5
words ordered][self::*:p or self::*:q])
==
let $in := doc('cm')
let $p := $in//p
let $q := $in//q
let $qs := concat('ft:mark($p', $q, ')')
return
xquery:eval($qs)
evaluates the query string ... aehh .. tries to evaluate the query string
[XPST0008] Undefined variable $p.
==
http://docs.basex.org/wiki/XQuery_Module#xquery:eval shows how to pass a
binding of into the query to be evaluated
let $in := doc('cm')
let $p := $in//p
let $q := $in//q
let $qs := concat('ft:mark($binding', $q, ')')
let $bm := map{ '$binding' := $p }
return
xquery:eval($qs, $bm)
constructs a query string
ft:mark($binding[text() contains text ('Johann' ftand 'Ballhorn') distance at
most 5 words ordered][self::*:p or self::*:q])
and a binding of $binding and
results in
pbey welchen die Verbesserungen durch markJohann/mark
markBallhorn/mark öfter vorkommen als man glauben sollte./p
Which, I hope, is the result you wanted to achieve.
All the best,
Alex
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Re: [basex-talk] xquery help
Hi Alex,
thanks for your answer!
Am 26.03.2013 um 18:43 schrieb Alexander Holupirek
alexander.holupi...@uni-konstanz.de
:
if I got you right you want to evaluate a query, such as
ft:mark(pbey welchen die Verbesserungen durch Johann Ballhorn öfter
vorkommen als man glauben sollte./p[./text() contains text ('Johann' ftand
'Ballhorn') distance at most 5 words ordered][self::*:p or self::*:q])
which you construct from your collection?
pbey welchen .../p is a database node and
q[text() contains text ('Johann' ... ]/q holds a query predicate as string
So you dynamically construct a query string that you like to evaluate?
I already have the complete query stored in the very same collection
==
Since ft:mark() operates on database nodes a simply typing
ft:mark(pbey welchen die Verbesserungen durch Johann Ballhorn öfter
vorkommen als man glauben sollte./p[./text() contains text ('Johann' ftand
'Ballhorn') distance at most 5 words ordered][self::*:p or self::*:q])
in BaseXGUi results in
[BXDB0001] ft:mark(element p { (bey welchen die Verbesserungen durch Johann
Ballhorn öfter vorkommen als man glauben sollte.) }[text() contains text
(Johann ftand Ballhorn) ordered distance(0-5 word)][(self::*:p or
self::*:q)]): database node expected.
Yes, I tried this :)
[…]
let $in := doc('cm')
let $p := $in//p
let $q := $in//q
let $qs := concat('ft:mark($p', $q, ')')
return
xquery:eval($qs)
evaluates the query string ... aehh .. tries to evaluate the query string
[XPST0008] Undefined variable $p.
And also this.
http://docs.basex.org/wiki/XQuery_Module#xquery:eval shows how to pass a
binding of into the query to be evaluated
let $in := doc('cm')
let $p := $in//p
let $q := $in//q
let $qs := concat('ft:mark($binding', $q, ')')
let $bm := map{ '$binding' := $p }
return
xquery:eval($qs, $bm)
constructs a query string
ft:mark($binding[text() contains text ('Johann' ftand 'Ballhorn') distance at
most 5 words ordered][self::*:p or self::*:q])
and a binding of $binding and
results in
pbey welchen die Verbesserungen durch markJohann/mark
markBallhorn/mark öfter vorkommen als man glauben sollte./p
Which, I hope, is the result you wanted to achieve.
OK, I now have this:
for $i at $p in //entry
let $q := $i/q
let $text := if ($i/p) then $i/p else $i/l
let $ft := concat(ft:mark($binding, $q,))
let $bm := map{'$binding' := $text}
return xquery:eval($ft, $bm)
The if clause allows to skip the extension [self::*:p or self::*:q] of the
query.
Thanks for your help!
Cerstin
--
Dr. phil. Cerstin Mahlow
Universität Basel
Departement Sprach- und Literaturwissenschaften
Fachbereich Deutsche Sprach- und Literaturwissenschaft
Nadelberg 4
4051 Basel
Schweiz
Tel: +41 61 267 07 65
Fax: +41 61 267 34 40
Mail: cerstin.mah...@unibas.ch
Web: http://www.oldphras.net
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