version: fedora 2.2.2,
url: http://host/fedora/risearch
tab: find triples
> - what's the exception?
org.trippi.TrippiException: Parse error: org.trippi.TrippiException:
Triple pattern token count not divisible by 3.
at org.trippi.TriplePattern.parse(TriplePattern.java:75)
at
org.trippi.impl.base.ConcurrentTriplestoreReader.findTriples(ConcurrentTriplestoreReader.java:122)
at
fedora.server.resourceIndex.ResourceIndexImpl.findTriples(ResourceIndexImpl.java:311)
at
fedora.server.resourceIndex.ResourceIndexModule.findTriples(ResourceIndexModule.java:374)
at org.trippi.server.TrippiServer.find(TrippiServer.java:132)
at fedora.server.access.TrippiServlet.doFind(TrippiServlet.java:518)
at fedora.server.access.TrippiServlet.doGet(TrippiServlet.java:383)
at fedora.server.access.RISearchServlet.doGet(RISearchServlet.java:84)
at fedora.server.access.TrippiServlet.doGet(TrippiServlet.java:275)
at fedora.server.access.TrippiServlet.doPost(TrippiServlet.java:578)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:173)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:173)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:173)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:173)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.trippi.TrippiException: Triple pattern token count not
divisible by 3.
at org.trippi.TriplePattern.parse(TriplePattern.java:59)
... 49 more
> - what kind of query are you running - iTQL or SPO? Try both and see if
> they both give exceptions
the frontend only offers "spo", "sponge", "unsupported (using template)"
> - what kind of triplestore are you using - MPTStore or Mulgara?
MPTStore
from fedora.fcfg:
<module role="fedora.server.resourceIndex.ResourceIndex"
class="fedora.server.resourceIndex.ResourceIndexModule">
<comment>Supports the ResourceIndex.</comment>
<param name="level" value="1">
<comment>(required)
Index level. Currently, only 0, 1 and 2 are supported
levels. 0 = off: do not load the ResourceIndex 1 = basic:
system
metadata, RELS-EXT, disseminations 2 = basic + method
permutations
WARNING: changing the level (except to 0) requires
running the Resource Index Rebuilder.</comment>
</param>
<param name="datastore" value="localPostgresMPTTriplestore">
<comment>(required)
Name of the triplestore to use. WARNING: changing the
triplestore running the Resource Index Rebuilder.</comment>
</param>
<param name="syncUpdates" value="false">
<comment>(optional, default is false)
Whether to flush the triple buffer before
returning from object modification operations.
Specifying this as true will ensure that RI queries
immediately reflect the latest triples.
Specifying false will not provide this guarantee,
but can significantly reduce roundtrip time for
API-M operations (depending on the triplestore
implementation).</comment>
</param>
<param name="alias:test" value="http://example.org/terms#";>
<comment>(optional) Aliases that can be used for queries. The param
name of an alias starts with the string
"alias:" and is
followed by
the name of the alias (shortcut) for the value, which
is a URI
prefix. For example: name="alias:test"
value="http://example.org/terms#" will allow
a query to use
test:apple instead of
http://example.org/terms#apple</comment>
</param>
</module>
<datastore id="localPostgresMPTTriplestore">
<comment>Example local MPTStore backed by Postgres.
To use this triplestore for the Resource Index:
1) In fedora.fcfg, change the "datastore" parameter of the
ResourceIndex module to localPostgresMPTTriplestore.
2) Login to your Postgres server as an administrative user and
run the following commands:
CREATE ROLE "fedoraAdmin" LOGIN PASSWORD 'fedoraAdmin'
NOINHERIT CREATEDB
VALID UNTIL 'infinity';
CREATE DATABASE "riTriples"
WITH ENCODING='SQL_ASCII'
OWNER="fedoraAdmin";
3) Make sure you can login to your Postgres server as
fedoraAdmin.
4) Download the appropriate Postgres JDBC 3 driver from
http://jdbc.postgresql.org/download.html
and make sure it's accessible to your servlet container.
If you're running Tomcat, putting it in common/lib/ will
work.</comment>
<param name="connectorClassName"
value="org.trippi.impl.mpt.MPTConnector"/>
<param name="ddlGenerator"
value="org.nsdl.mptstore.impl.postgres.PostgresDDLGenerator"/>
<param name="jdbcDriver" value="org.postgresql.Driver"/>
<param name="jdbcURL"
value="jdbc:postgresql://localhost:5432/riTriples"/>
<param name="username" value="username"/>
<param name="password" value="password"/>
<param name="poolInitialSize" value="3"/>
<param name="poolMaxSize" value="10"/>
<param name="backslashIsEscape" value="true"/>
<param name="fetchSize" value="1000"/>
<param name="autoFlushDormantSeconds" value="5"/>
<param name="autoFlushBufferSize" value="1000"/>
<param name="bufferFlushBatchSize" value="1000"/>
<param name="bufferSafeCapacity" value="2000"/>
</datastore>
> -----Original Message-----
> From: arne anka [mailto:[EMAIL PROTECTED]
> Sent: 07 November 2008 15:37
> To: fedora-commons-users
> Subject: Re: [Fedora-commons-users] [Fedora-commons-developers]
> "re-initialize (clear) triplestore"???
>
>
>>> i did the last one, which may have been not the best idea, since every
>>> query in http://host/fedora/risearch yields an exception ...
>>>
>> Did the rebuilder throw an exception when you ran it?
>
> nope, only the servlet.
> so far i got only simple objects with three or four datastreams, no
> collections so far.
> what is risearch supposed to find? could it be that empty search results
> cause the exception?
>
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