Re: Issue while reading Model or Graph from Trig Strings
If you read TriG into model, it takes the default graph only.
The TriG has a named graphs in it. bdg:T1642 { ... }
Remove the name and it should work.
The Turtle does not have a name (so it is the same as Trig+default graph)
Andy
On 22/11/2019 17:22, Marc Agate wrote:
Hi Martynas !
The method you are pointing me to effectively works and I can use it to solve
the issue for now. However, the RDFDataMgr documentation says (about read
methods/operations):
read -- Read data from a location into a Model, Dataset, etc. The methods in
this class treat all types of Model in the same way. For behavior specific to a
subtype of Model, use the methods of that specific class.
Therefore, both
https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/RDFDataMgr.html#read-org.apache.jena.graph.Graph-java.io.StringReader-java.lang.String-org.apache.jena.riot.Lang-
AND
https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/RDFDataMgr.html#read-org.apache.jena.rdf.model.Model-java.io.StringReader-java.lang.String-org.apache.jena.riot.Lang-
should work.
I am wondering why they don't: Am I using them wrongly or is this just a bug ?
Best
Marc
On 2019/11/22 15:56:16, Martynas Jusevičius wrote:
I think you want to read a Dataset:
https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/RDFDataMgr.html#read-org.apache.jena.query.Dataset-java.io.StringReader-java.lang.String-org.apache.jena.riot.Lang-
On Fri, 22 Nov 2019 at 16.45, Marc Agate wrote:
Hi all,
I need to build Models or Graphs from strings being a trig serialization
of a rdf resource.
I tried to do using Model.read or RDFDataMgr but both produce empty models
or graphs.
When I do the same operation with Turtle serialization, it works just fine.
What do you think ?
Run the following code to see that by yourself:
https://github.com/buda-base/editserv/blob/master/src/test/java/editservio/bdrc/edit/test/RDFDataMgrCheck.java
Thx
Marc
Re: Access control on Jena/fuseki datasets
I think that the issue is that Shiro, out of the box, does not address matching by query param. You may wish to configure RegExPatternMatcher, which would be more flexible. https://shiro.apache.org/static/1.4.2/apidocs/org/apache/shiro/util/RegExPatternMatcher.html ajs6f > On Nov 22, 2019, at 12:43 PM, Jean-Claude Moissinac > wrote: > > @ajs6f I doesnt think that shiro is the problem (perhaps, it is part of the > solution). I think that the web UI of Fuseki call something which is > protected. But what? > The index.html page doesn't contain an evident candidate. > I think that we have to look in js/app/main.index.js, but it becomes an > indeep analyze of complex js code... > -- > Jean-Claude Moissinac > > > > Le ven. 22 nov. 2019 à 17:49, ajs6f a écrit : > >> This isn't really a question about Jena, it's a question about Shiro. Have >> you tried asking that community? >> >> ajs6f >> >>> On Nov 22, 2019, at 11:41 AM, Jean-Claude Moissinac < >> jean-claude.moissi...@telecom-paristech.fr> wrote: >>> >>> Dear Marco, >>> >>> I think my previous reading of this documentation was right. >>> My understanding is that the proposed solution is to develop specific >> Java >>> code (like the ShiroExampleEvaluator) to implement the permissions. >>> I would like just to configure and use fuseki, not start a Java >> development >>> I doesn't see clearly , by doing such code, >>> * if i get something more efficient than what I do with shiro, following >>> the documentation here >>> https://jena.apache.org/documentation/fuseki2/fuseki-security.html >>> >>> * if I will be able to manage correctly the user interface while having >>> some free datasets and some protected dataset >>> now, a window to enter a login/pwd is always displayed when I call the >> user >>> interface, so I'm not able to give a free access to free datasets >>> through the user interface >>> In the section [urls] of shiro.ini, I have the following line to access >> the >>> user interface >>> / = anon >>> >>> >>> >>> >>> -- >>> Jean-Claude Moissinac >>> >>> >>> >>> Le jeu. 21 nov. 2019 à 16:05, Marco Neumann a >>> écrit : >>> please take a look at https://jena.apache.org/documentation/permissions/index.html On Thu 21. Nov 2019 at 14:00, Jean-Claude Moissinac < jean-claude.moissi...@telecom-paristech.fr> wrote: > Hello > > I would like to give free access to some datasets in my fuseki server >> and > control access to other datasets. > With shiro, I'm able to control the sparql access points like > https://myserver/dm/sparql > but I'm not able to give a controlled access to the datasets user interface > https://myserver/dataset.html?tab=query=/controlleddataset > or > https://myserver/dataset.html?tab=query=/freedataset > or > https://myserver/ > > Is there some good practices about the access control in fuseki instances? > > Thank's in advance for any advice > -- > Jean-Claude Moissinac > -- --- Marco Neumann KONA >> >>
Re: Access control on Jena/fuseki datasets
@ajs6f I doesnt think that shiro is the problem (perhaps, it is part of the solution). I think that the web UI of Fuseki call something which is protected. But what? The index.html page doesn't contain an evident candidate. I think that we have to look in js/app/main.index.js, but it becomes an indeep analyze of complex js code... -- Jean-Claude Moissinac Le ven. 22 nov. 2019 à 17:49, ajs6f a écrit : > This isn't really a question about Jena, it's a question about Shiro. Have > you tried asking that community? > > ajs6f > > > On Nov 22, 2019, at 11:41 AM, Jean-Claude Moissinac < > jean-claude.moissi...@telecom-paristech.fr> wrote: > > > > Dear Marco, > > > > I think my previous reading of this documentation was right. > > My understanding is that the proposed solution is to develop specific > Java > > code (like the ShiroExampleEvaluator) to implement the permissions. > > I would like just to configure and use fuseki, not start a Java > development > > I doesn't see clearly , by doing such code, > > * if i get something more efficient than what I do with shiro, following > > the documentation here > > https://jena.apache.org/documentation/fuseki2/fuseki-security.html > > > > * if I will be able to manage correctly the user interface while having > > some free datasets and some protected dataset > > now, a window to enter a login/pwd is always displayed when I call the > user > > interface, so I'm not able to give a free access to free datasets > > through the user interface > > In the section [urls] of shiro.ini, I have the following line to access > the > > user interface > > / = anon > > > > > > > > > > -- > > Jean-Claude Moissinac > > > > > > > > Le jeu. 21 nov. 2019 à 16:05, Marco Neumann a > > écrit : > > > >> please take a look at > >> > >> https://jena.apache.org/documentation/permissions/index.html > >> > >> > >> On Thu 21. Nov 2019 at 14:00, Jean-Claude Moissinac < > >> jean-claude.moissi...@telecom-paristech.fr> wrote: > >> > >>> Hello > >>> > >>> I would like to give free access to some datasets in my fuseki server > and > >>> control access to other datasets. > >>> With shiro, I'm able to control the sparql access points like > >>> https://myserver/dm/sparql > >>> but I'm not able to give a controlled access to the datasets user > >> interface > >>> https://myserver/dataset.html?tab=query=/controlleddataset > >>> or > >>> https://myserver/dataset.html?tab=query=/freedataset > >>> or > >>> https://myserver/ > >>> > >>> Is there some good practices about the access control in fuseki > >> instances? > >>> > >>> Thank's in advance for any advice > >>> -- > >>> Jean-Claude Moissinac > >>> > >> -- > >> > >> > >> --- > >> Marco Neumann > >> KONA > >> > >
Re: Issue while reading Model or Graph from Trig Strings
Hi Martynas ! The method you are pointing me to effectively works and I can use it to solve the issue for now. However, the RDFDataMgr documentation says (about read methods/operations): read -- Read data from a location into a Model, Dataset, etc. The methods in this class treat all types of Model in the same way. For behavior specific to a subtype of Model, use the methods of that specific class. Therefore, both https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/RDFDataMgr.html#read-org.apache.jena.graph.Graph-java.io.StringReader-java.lang.String-org.apache.jena.riot.Lang- AND https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/RDFDataMgr.html#read-org.apache.jena.rdf.model.Model-java.io.StringReader-java.lang.String-org.apache.jena.riot.Lang- should work. I am wondering why they don't: Am I using them wrongly or is this just a bug ? Best Marc On 2019/11/22 15:56:16, Martynas Jusevičius wrote: > I think you want to read a Dataset: > https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/RDFDataMgr.html#read-org.apache.jena.query.Dataset-java.io.StringReader-java.lang.String-org.apache.jena.riot.Lang- > > On Fri, 22 Nov 2019 at 16.45, Marc Agate wrote: > > > Hi all, > > > > I need to build Models or Graphs from strings being a trig serialization > > of a rdf resource. > > I tried to do using Model.read or RDFDataMgr but both produce empty models > > or graphs. > > When I do the same operation with Turtle serialization, it works just fine. > > > > What do you think ? > > > > Run the following code to see that by yourself: > > > > > > https://github.com/buda-base/editserv/blob/master/src/test/java/editservio/bdrc/edit/test/RDFDataMgrCheck.java > > > > Thx > > > > Marc > > >
Re: Access control on Jena/fuseki datasets
This isn't really a question about Jena, it's a question about Shiro. Have you tried asking that community? ajs6f > On Nov 22, 2019, at 11:41 AM, Jean-Claude Moissinac > wrote: > > Dear Marco, > > I think my previous reading of this documentation was right. > My understanding is that the proposed solution is to develop specific Java > code (like the ShiroExampleEvaluator) to implement the permissions. > I would like just to configure and use fuseki, not start a Java development > I doesn't see clearly , by doing such code, > * if i get something more efficient than what I do with shiro, following > the documentation here > https://jena.apache.org/documentation/fuseki2/fuseki-security.html > > * if I will be able to manage correctly the user interface while having > some free datasets and some protected dataset > now, a window to enter a login/pwd is always displayed when I call the user > interface, so I'm not able to give a free access to free datasets > through the user interface > In the section [urls] of shiro.ini, I have the following line to access the > user interface > / = anon > > > > > -- > Jean-Claude Moissinac > > > > Le jeu. 21 nov. 2019 à 16:05, Marco Neumann a > écrit : > >> please take a look at >> >> https://jena.apache.org/documentation/permissions/index.html >> >> >> On Thu 21. Nov 2019 at 14:00, Jean-Claude Moissinac < >> jean-claude.moissi...@telecom-paristech.fr> wrote: >> >>> Hello >>> >>> I would like to give free access to some datasets in my fuseki server and >>> control access to other datasets. >>> With shiro, I'm able to control the sparql access points like >>> https://myserver/dm/sparql >>> but I'm not able to give a controlled access to the datasets user >> interface >>> https://myserver/dataset.html?tab=query=/controlleddataset >>> or >>> https://myserver/dataset.html?tab=query=/freedataset >>> or >>> https://myserver/ >>> >>> Is there some good practices about the access control in fuseki >> instances? >>> >>> Thank's in advance for any advice >>> -- >>> Jean-Claude Moissinac >>> >> -- >> >> >> --- >> Marco Neumann >> KONA >>
Re: Access control on Jena/fuseki datasets
Dear Marco, I think my previous reading of this documentation was right. My understanding is that the proposed solution is to develop specific Java code (like the ShiroExampleEvaluator) to implement the permissions. I would like just to configure and use fuseki, not start a Java development I doesn't see clearly , by doing such code, * if i get something more efficient than what I do with shiro, following the documentation here https://jena.apache.org/documentation/fuseki2/fuseki-security.html * if I will be able to manage correctly the user interface while having some free datasets and some protected dataset now, a window to enter a login/pwd is always displayed when I call the user interface, so I'm not able to give a free access to free datasets through the user interface In the section [urls] of shiro.ini, I have the following line to access the user interface / = anon -- Jean-Claude Moissinac Le jeu. 21 nov. 2019 à 16:05, Marco Neumann a écrit : > please take a look at > > https://jena.apache.org/documentation/permissions/index.html > > > On Thu 21. Nov 2019 at 14:00, Jean-Claude Moissinac < > jean-claude.moissi...@telecom-paristech.fr> wrote: > > > Hello > > > > I would like to give free access to some datasets in my fuseki server and > > control access to other datasets. > > With shiro, I'm able to control the sparql access points like > > https://myserver/dm/sparql > > but I'm not able to give a controlled access to the datasets user > interface > > https://myserver/dataset.html?tab=query=/controlleddataset > > or > > https://myserver/dataset.html?tab=query=/freedataset > > or > > https://myserver/ > > > > Is there some good practices about the access control in fuseki > instances? > > > > Thank's in advance for any advice > > -- > > Jean-Claude Moissinac > > > -- > > > --- > Marco Neumann > KONA >
Re: Caching in Fuseki service
You would provide both datasets at Fuseki and then us a reverse proxy (like Varnish) to switch between the two endpoints. Anything more specific would depend on the reverse proxy you select. ajs6f > On Nov 22, 2019, at 1:06 AM, Martynas Jusevičius > wrote: > > Varnish is a reverse proxy cache: > https://varnish-cache.org/docs/trunk/tutorial/introduction.html > > On Fri, 22 Nov 2019 at 01.33, Amandeep Srivastava < > amandeep.srivastava1...@gmail.com> wrote: > >> Thanks Andy, ajs6f >> >> I wanted to use the soft links because I'll be updating my database once >> every month. Whenever I have a new database, I'll overwrite inactive >> database and point the softlink to it making it active and the current one >> inactive (stale) without bringing down fuseki and losing any requests. Next >> time I would overwrite second database and switch back to it. But seems, >> that won't work because of caching. >> >> Can you please elaborate how to do it using reverse proxy? >> >> >> On Thu, 21 Nov, 2019, 11:08 PM Andy Seaborne, wrote: >> >>> >>> >>> On 21/11/2019 17:16, ajs6f wrote: Why wouldn't you just load these as two separate datasets available at >>> different endpoints in one instance of Fuseki? Why try to fool Fuseki >> into >>> thinking that two datasets are really one? >>> >>> Agreed. >>> ajs6f > On Nov 21, 2019, at 6:57 AM, Amandeep Srivastava < >>> amandeep.srivastava1...@gmail.com> wrote: > > Hi, > > Is there any resource that talks about caching in Fuseki service? > > Is is handled by Fuseki server itself or the TDB? (I'm using tdb >>> dataset in > the backend as input) And can we disable the cache? > > My use case is to query two dumps, one old and one new and I'm setting >>> - - > loc to a soft link pointing to the new dump while running fuseki. >>> >>> In effect, symbolic links are resolved at he start and never checked >> again. >>> > At times, > I wish to point my soft link to the older dump and query that. I don't >>> want > to run another instance of the server. > > By understanding caching, I just want to make sure that when I point >> my > soft link to new location, fuseki service doesn't use its older cache >> to > answer incoming queries. >>> >>> You can't manipulate the file system going underneath Fuseki or TDB. >>> Mostly, likely it simply won't notice (the file are already open) but it >>> may be worse. >>> >>> If you want to swap datasets in-place you'll need to stop and restart >>> Fuseki. >>> >>> One different way is to use a reverse proxy (httpd for example) and have >>> two Fuseki servers. Switchover in the reverse proxy - they usually >>> reload configs while running, preserving oustanding requests. >>> >>> Andy >>> >>> >>> > > Thanks, > Aman >>> >>
Re: Access control on Jena/fuseki datasets
Dear Andy, Thank's for your reply. But, as said in my starting email, my problem is to control the access of the datasets in the user interface? Because, I need the user interface. A tuned configuration for Shiro does the job for the sparql endpoints A way could be to produce a specific user interface for access to the free datasets. I need to check for the feasibility. -- Jean-Claude Moissinac Le jeu. 21 nov. 2019 à 18:32, Andy Seaborne a écrit : > A different approach is to use: > > https://jena.apache.org/documentation/fuseki2/data-access-control > > This goes with fuseki-main rather than fuseki-full. > > That works particularly well when you don't want the UI. > > Andy > > > On 21/11/2019 13:59, Jean-Claude Moissinac wrote: > > Hello > > > > I would like to give free access to some datasets in my fuseki server and > > control access to other datasets. > > With shiro, I'm able to control the sparql access points like > > https://myserver/dm/sparql > > but I'm not able to give a controlled access to the datasets user > interface > > https://myserver/dataset.html?tab=query=/controlleddataset > > or > > https://myserver/dataset.html?tab=query=/freedataset > > or > > https://myserver/ > > > > Is there some good practices about the access control in fuseki > instances? > > > > Thank's in advance for any advice > > -- > > Jean-Claude Moissinac > > >
Re: Issue while reading Model or Graph from Trig Strings
I think you want to read a Dataset: https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/RDFDataMgr.html#read-org.apache.jena.query.Dataset-java.io.StringReader-java.lang.String-org.apache.jena.riot.Lang- On Fri, 22 Nov 2019 at 16.45, Marc Agate wrote: > Hi all, > > I need to build Models or Graphs from strings being a trig serialization > of a rdf resource. > I tried to do using Model.read or RDFDataMgr but both produce empty models > or graphs. > When I do the same operation with Turtle serialization, it works just fine. > > What do you think ? > > Run the following code to see that by yourself: > > > https://github.com/buda-base/editserv/blob/master/src/test/java/editservio/bdrc/edit/test/RDFDataMgrCheck.java > > Thx > > Marc >
Issue while reading Model or Graph from Trig Strings
Hi all, I need to build Models or Graphs from strings being a trig serialization of a rdf resource. I tried to do using Model.read or RDFDataMgr but both produce empty models or graphs. When I do the same operation with Turtle serialization, it works just fine. What do you think ? Run the following code to see that by yourself: https://github.com/buda-base/editserv/blob/master/src/test/java/editservio/bdrc/edit/test/RDFDataMgrCheck.java Thx Marc
