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| <h1 class="firstHeading">SMILA/FAQ</h1> |
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| <h3 id="siteSub">From Eclipsepedia</h3> |
| <div id="contentSub"><span class="subpages">< <a href="../SMILA.html" title="SMILA">SMILA</a></span></div> |
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| <p>This pages contains the frequently asked questions of the SMILA project. |
| </p><p><b>General Hint:</b> When you have problems during a SMILA launch / run, please have a look at the <b>SMILA log</b> file first. (<tt><SMILA>/SMILA.log</tt>) |
| </p> |
| <table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div> |
| <ul> |
| <li class="toclevel-1"><a href="FAQ.html#General"><span class="tocnumber">1</span> <span class="toctext">General</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="FAQ.html#Where_do_I_find_the_log_file.3F"><span class="tocnumber">1.1</span> <span class="toctext">Where do I find the log file?</span></a></li> |
| <li class="toclevel-2"><a href="FAQ.html#How_can_I_see_that_SMILA_started_correctly.3F"><span class="tocnumber">1.2</span> <span class="toctext">How can I see that SMILA started correctly?</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-1"><a href="FAQ.html#Building_SMILA"><span class="tocnumber">2</span> <span class="toctext">Building SMILA</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="FAQ.html#I_receive_an_Out_of_Memory_error.3F_What_can_I_do.3F"><span class="tocnumber">2.1</span> <span class="toctext">I receive an Out of Memory error? What can I do?</span></a></li> |
| <li class="toclevel-2"><a href="FAQ.html#Build_fails_with_.27java.net.MalformedURLException:_no_protocol:_.24.7BeclipseBaseURL.7D.27_message"><span class="tocnumber">2.2</span> <span class="toctext">Build fails with 'java.net.MalformedURLException: no protocol: ${eclipseBaseURL}' message</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-1"><a href="FAQ.html#Launching_SMILA"><span class="tocnumber">3</span> <span class="toctext">Launching SMILA</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="FAQ.html#Linux"><span class="tocnumber">3.1</span> <span class="toctext">Linux</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="FAQ.html#How_to_start.2Fstop_and_manage_SMILA_as_a_background_process_on_a_Linux_machine.3F"><span class="tocnumber">3.1.1</span> <span class="toctext">How to start/stop and manage SMILA as a background process on a Linux machine?</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-2"><a href="FAQ.html#Bundles"><span class="tocnumber">3.2</span> <span class="toctext">Bundles</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="FAQ.html#Launching_crawler_bundles_-_How_to_solve:_.22Could_not_find_crawler_id.22_error_message.3F"><span class="tocnumber">3.2.1</span> <span class="toctext">Launching crawler bundles - How to solve: "Could not find crawler id" error message?</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#I_changed_the_implementation_of_a_bundle.2C_deployed_it_and_restarted_SMILA.2C_but_SMILA_still_seems_to_use_the_old_bundle"><span class="tocnumber">3.2.2</span> <span class="toctext">I changed the implementation of a bundle, deployed it and restarted SMILA, but SMILA still seems to use the old bundle</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#I_changed_bundle_settings_in_my_config.ini.2C_but_after_SMILA_restart_nothing_changed"><span class="tocnumber">3.2.3</span> <span class="toctext">I changed bundle settings in my config.ini, but after SMILA restart nothing changed</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-2"><a href="FAQ.html#JConsole"><span class="tocnumber">3.3</span> <span class="toctext">JConsole</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="FAQ.html#Why_is_the_SMILA_package_not_in_the_JConsole_tree.3F"><span class="tocnumber">3.3.1</span> <span class="toctext">Why is the SMILA package not in the JConsole tree?</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#Why_is_the_SMILA.2FCrawlerController_MBean_not_in_the_JConsole_tree.3F"><span class="tocnumber">3.3.2</span> <span class="toctext">Why is the SMILA/CrawlerController MBean not in the JConsole tree?</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#Cannot_connect_with_JConsole_to_a_remote_machine_running_Ubuntu_8.04_or_newer"><span class="tocnumber">3.3.3</span> <span class="toctext">Cannot connect with JConsole to a remote machine running Ubuntu 8.04 or newer</span></a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="toclevel-1"><a href="FAQ.html#Configuring.2FRunning_SMILA"><span class="tocnumber">4</span> <span class="toctext">Configuring/Running SMILA</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="FAQ.html#Crawler"><span class="tocnumber">4.1</span> <span class="toctext">Crawler</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="FAQ.html#I_started_a_crawl_job.2C_the_job_was_started_successfully.2C_but_nothing_seems_to_happen"><span class="tocnumber">4.1.1</span> <span class="toctext">I started a crawl job, the job was started successfully, but nothing seems to happen</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#I_tried_to_crawl.2Findex_a_data_source_.28with_the_deprecated_connectivity_framework.29_to_a_job.2C_JConsole_says_.22Crawler_..._sucessfully_started.22_but_nothing_seems_to_happen"><span class="tocnumber">4.1.2</span> <span class="toctext">I tried to crawl/index a data source (with the deprecated connectivity framework) to a job, JConsole says "Crawler ... sucessfully started" but nothing seems to happen</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-2"><a href="FAQ.html#Pipeline"><span class="tocnumber">4.2</span> <span class="toctext">Pipeline</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="FAQ.html#Why_do_I_get_a_timeout_exception_during_a_.28long_running.29_pipeline_execution.3F"><span class="tocnumber">4.2.1</span> <span class="toctext">Why do I get a timeout exception during a (long running) pipeline execution?</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#My_xpath_expression_doesnt_work"><span class="tocnumber">4.2.2</span> <span class="toctext">My xpath expression doesnt work</span></a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="toclevel-1"><a href="FAQ.html#Implementing_Pipelets_.2F_OSGi_Services_.2F_Bundles"><span class="tocnumber">5</span> <span class="toctext">Implementing Pipelets / OSGi Services / Bundles</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="FAQ.html#Configuration"><span class="tocnumber">5.1</span> <span class="toctext">Configuration</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="FAQ.html#I_want_to_use_the_ConfigUtils_class_in_my_Pipelet_to_read_the_configuration.2C_where_do_I_have_to_put_my_configuration_files.3F"><span class="tocnumber">5.1.1</span> <span class="toctext">I want to use the ConfigUtils class in my Pipelet to read the configuration, where do I have to put my configuration files?</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-2"><a href="FAQ.html#Deploy_.2F_Launch"><span class="tocnumber">5.2</span> <span class="toctext">Deploy / Launch</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="FAQ.html#I_implemented.2Fdeployed_a_OSGi_Service_in_a_new_bundle_but_SMILA_log_says_that_it_couldn.27t_be_found"><span class="tocnumber">5.2.1</span> <span class="toctext">I implemented/deployed a OSGi Service in a new bundle but SMILA log says that it couldn't be found</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#I_get_classloading_errors_in_invocations_of_my_own_Pipelet_when_running_SMILA_outside_the_IDE._In_the_IDE_it_works"><span class="tocnumber">5.2.2</span> <span class="toctext">I get classloading errors in invocations of my own Pipelet when running SMILA outside the IDE. In the IDE it works</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#I_get_classloading_errors_when_I_try_to_access_an_external_Web_Service_using_JAX-WS"><span class="tocnumber">5.2.3</span> <span class="toctext">I get classloading errors when I try to access an external Web Service using JAX-WS</span></a></li> |
| <li class="toclevel-3"><a href="FAQ.html#More_classloader_errors_-_part_1"><span class="tocnumber">5.2.4</span> <span class="toctext">More classloader errors - part 1</span></a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </td></tr></table><script type="text/javascript"> if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); } </script> |
| <a name="General"></a><h2> <span class="mw-headline"> General </span></h2> |
| <a name="Where_do_I_find_the_log_file.3F"></a><h3> <span class="mw-headline"> Where do I find the log file? </span></h3> |
| <p>The SMILA log file's name is <tt>SMILA.log</tt> and is to be found at the applications working folder: |
| </p><p>If you extracted SMILA from a zip, you can find the log file in the folder, where you extracted the SMILA. |
| </p> |
| <pre> |
| /<SMILA> |
| /about_files |
| /configuration |
| /features |
| /jmxclient |
| /plugins |
| /workspace |
| .eclipseproduct |
| ... |
| SMILA |
| SMILA.ini |
| -> SMILA.log <- |
| </pre> |
| <p>If you started SMILA from within the Eclipse IDE using the launcher, you can find the log file at the project <tt>SMILA.application</tt> in your workspace. |
| </p> |
| <a name="How_can_I_see_that_SMILA_started_correctly.3F"></a><h3> <span class="mw-headline"> How can I see that SMILA started correctly? </span></h3> |
| <p>You should see no stacktraces in the log ;) and it should end with an entry like the following if SMILA has just started: |
| </p> |
| <pre> |
| ... INFO ... internal.HttpServiceImpl - HTTP server started successfully on port 8080. |
| </pre> |
| <a name="Building_SMILA"></a><h2> <span class="mw-headline"> Building SMILA </span></h2> |
| <a name="I_receive_an_Out_of_Memory_error.3F_What_can_I_do.3F"></a><h3> <span class="mw-headline"> I receive an <i>Out of Memory</i> error? What can I do? </span></h3> |
| <p>While building with <tt>SMILA.builder</tt> I receive the following errror message: |
| </p><p><code>Build Failed - Out of Memory - Java heap space</code> |
| </p><p>The reason for this is that Ant hasn´t enough heap space to build the project. You will have to expand the heap space by setting the VM arguments accordingly. In eclipse try the following: |
| </p> |
| <ol><li> Click <i>Open external tools dialog</i> and select your Ant build profile. |
| </li><li> Switch to the <i>JRE</i> tab and add the following VM arguments: <tt>-Xms40m -Xmx512m</tt>. |
| </li><li> Save and build again. |
| </li></ol> |
| <p><br /> |
| </p> |
| <a name="Build_fails_with_.27java.net.MalformedURLException:_no_protocol:_.24.7BeclipseBaseURL.7D.27_message"></a><h3> <span class="mw-headline"> Build fails with 'java.net.MalformedURLException: no protocol: ${eclipseBaseURL}' message </span></h3> |
| <p>The complete error looks like this: |
| </p> |
| <div dir="ltr" style="text-align: left;"><pre class="source-text">... |
| build.core: |
| [java] Buildfile: /home/scum36/Eclipse/helios-sr2-build/plugins/org.eclipse.pde.build_3.6.2.R36x_20110203/scripts/productBuild/productBuild.xml |
| [java] |
| [java] main: |
| [java] |
| [java] preBuild: |
| [java] |
| [java] preSetup: |
| [java] |
| [java] checkLocalMaps: |
| [java] |
| [java] getMapFiles: |
| [java] [cvs] Caught exception: Cannot run program "cvs" (in directory "/home/scum36/workspace/SMILA/smila.build/maps"): java.io.IOException: error=2, No such file or directory |
| [java] |
| [java] postSetup: |
| [java] |
| [java] checkLocalBase: |
| [java] |
| [java] getBaseComponents: |
| [java] |
| [java] BUILD FAILED |
| [java] /home/scum36/Eclipse/helios-sr2-build/plugins/org.eclipse.pde.build_3.6.2.R36x_20110203/scripts/productBuild/productBuild.xml:33: The following error occurred while executing this line: |
| [java] /home/scum36/Eclipse/helios-sr2-build/plugins/org.eclipse.pde.build_3.6.2.R36x_20110203/scripts/build.xml:53: The following error occurred while executing this line: |
| [java] /home/scum36/workspace/SMILA/SMILA.builder/customTargets.xml:80: The following error occurred while executing this line: |
| [java] /home/scum36/workspace/SMILA/SMILA.builder/customTargets.xml:25: java.net.MalformedURLException: no protocol: ${eclipseBaseURL} |
| [java] |
| [java] Total time: 0 seconds |
| [java] An error has occurred. See the log file |
| [java] /home/scum36/workspace/.metadata/.log.</pre></div> |
| <p><br /> |
| Probably you did forget to copy <code>build.properties.template</code> to <code>build.properties</code> in <code>SMILA.builder</code> and adapt it. See |
| <a href="Development_Guidelines/Howto_build_a_SMILA-Distribution.html#Setting_the_Target_Build_Platform" class="external text" title="http://wiki.eclipse.org/SMILA/Development_Guidelines/Howto_build_a_SMILA-Distribution#Setting_the_Target_Build_Platform" rel="nofollow">How to build SMILA</a>. |
| </p> |
| <a name="Launching_SMILA"></a><h2> <span class="mw-headline"> Launching SMILA </span></h2> |
| <a name="Linux"></a><h3> <span class="mw-headline"> Linux </span></h3> |
| <a name="How_to_start.2Fstop_and_manage_SMILA_as_a_background_process_on_a_Linux_machine.3F"></a><h4> <span class="mw-headline"> How to start/stop and manage SMILA as a background process on a Linux machine? </span></h4> |
| <p>Since the default configuration (stored in SMILA.ini) of the OSGi runtime (in our case Equinox) launcher expects that you execute it in foreground and therefore have an OSGi console running in your shell and listening to the standard input, the first thing we have to do is to advise the launcher (and thereby Equinox) to listen on some TCP port instead. This is done by adding a new line with the port number just after the "-console" line. |
| </p><p>For example, to set console to listen at TCP port 9999, SMILA.ini would look like this: |
| </p><p><code> |
| </p> |
| <pre>-console |
| 9999 |
| ... |
| </pre> |
| <p></code> |
| </p><p>Now, after SMILA has been started with “<tt>$ nohup ./SMILA &</tt>”, the console can be accessed from any computer simply by opening a telnet session: |
| </p><p><tt> |
| $ telnet <smila_host_name> <console_port> |
| </tt> |
| </p><p><br /> |
| </p> |
| <table style="border:1px solid #AAA; background:#f9f9f9; width:100%; margin:0 auto 1em auto; padding:.2em; text-align:justify;"> |
| <tr> |
| <td style="width:50px;"> <a href="http://wiki.eclipse.org/Image:Symbol_comment_vote.png" class="image" title="Symbol comment vote.png"><img alt="" src="http://wiki.eclipse.org/images/9/9e/Symbol_comment_vote.png" width="50" height="51" border="0" /></a> |
| </td><td style="padding-left:.2em;"> If you are logged in via telnet and just want to close this connection and not to stop Equinox running SMILA, than just type “<tt>disconnect</tt>”. Otherwise, if you want to stop SMILA and close the connection, use “<tt>close</tt>” - as you normally would do on a console running in your shell. |
| </td></tr></table> |
| <p>For the complete documentation on eclipse runtime options please see: <a href="http://help.eclipse.org/indigo/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html" class="external free" title="http://help.eclipse.org/indigo/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html" rel="nofollow">http://help.eclipse.org/indigo/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html</a> |
| </p> |
| <a name="Bundles"></a><h3> <span class="mw-headline"> Bundles </span></h3> |
| <a name="Launching_crawler_bundles_-_How_to_solve:_.22Could_not_find_crawler_id.22_error_message.3F"></a><h4> <span class="mw-headline"> Launching crawler bundles - How to solve: "Could not find crawler id" error message? </span></h4> |
| <p>While launching SMILA I receive the following error message: |
| </p><p><code>Could not find crawler id</code> |
| </p><p>If you started <b><tt>SMILA.launch</tt></b> to launch SMILA: The launcher didn't start your new crawler bundle. Try this: |
| </p> |
| <ol><li> Add your bundle by selecting "Open Run dialog" in eclipse and choose your SMILA profile. |
| </li><li> Select your bundle in the list and set the checkmark. |
| </li><li> Set the start level to "4" and the autostart to "true". |
| </li></ol> |
| <p>If you started <b><tt>SMILA.EXE</tt></b> to launch SMILA: Your bundle isn`t defined in <tt>config.ini</tt> or the start level isn´t correct. Try this: |
| </p> |
| <ol> |
| <li>Open the file <tt>config.ini</tt> and add your bundle as shown below:<br /> |
| <code>org.eclipse.smila.connectivity.framework.crawler.owncrawler@5:start, \</code></li> |
| <li>Open the <tt>build.properties</tt> file of your bundle and include the folders <tt>schemas/</tt>, <tt>OSGI-INF/</tt>, and the file <tt>plugin.xml</tt>.</li> |
| </ol> |
| <a name="I_changed_the_implementation_of_a_bundle.2C_deployed_it_and_restarted_SMILA.2C_but_SMILA_still_seems_to_use_the_old_bundle"></a><h4> <span class="mw-headline"> I changed the implementation of a bundle, deployed it and restarted SMILA, but SMILA still seems to use the old bundle </span></h4> |
| <p>Close SMILA, delete the following directories in your configuration folder and restart SMILA again: |
| </p> |
| <ul><li> <tt>org.eclipse.core.runtime/</tt> |
| </li><li> <tt>org.eclipse.equinox.app/</tt> |
| </li><li> <tt>org.eclipse.osgi/</tt> |
| </li><li> <tt>org.eclipse.update/</tt> |
| </li></ul> |
| <a name="I_changed_bundle_settings_in_my_config.ini.2C_but_after_SMILA_restart_nothing_changed"></a><h4> <span class="mw-headline"> I changed bundle settings in my <tt>config.ini</tt>, but after SMILA restart nothing changed </span></h4> |
| <p>Check your <tt>config.ini</tt> for unusual whitespaces (e.g. a tab) between the (edited) bundle entries or after the backslashes on line ends - and remove them. |
| </p><p>If that doesn't help, see question (resp. answer) before. |
| </p><p><br /> |
| </p> |
| <a name="JConsole"></a><h3> <span class="mw-headline"> JConsole </span></h3> |
| <a name="Why_is_the_SMILA_package_not_in_the_JConsole_tree.3F"></a><h4> <span class="mw-headline"> Why is the <i>SMILA</i> package not in the JConsole tree? </span></h4> |
| <p>I've started <tt>SMILA.exe</tt> but the SMILA package isn't in the tree of JConsole. |
| </p><p>To solve this try the following: |
| </p> |
| <ol><li> Create a new connection. |
| </li><li> Change your connection by setting the port "9004" on the <i>Remote</i> tab. |
| </li><li> Click the <i>Connect</i> button, switch to the <i>MBeans</i> tab, and check the tree again. |
| </li></ol> |
| <a name="Why_is_the_SMILA.2FCrawlerController_MBean_not_in_the_JConsole_tree.3F"></a><h4> <span class="mw-headline"> Why is the <i>SMILA/CrawlerController</i> MBean not in the JConsole tree? </span></h4> |
| <p>Check if all needed bundles are active. Open the equinox console and type: |
| </p> |
| <ul><li> <tt>ss crawler</tt> |
| </li><li> <tt>ss deltaindexing.impl</tt> |
| </li></ul> |
| <p>If one of these is not active: |
| </p> |
| <ul><li> check the <tt>configuration/config.ini</tt> |
| </li><li> check the log file for errors |
| </li></ul> |
| <a name="Cannot_connect_with_JConsole_to_a_remote_machine_running_Ubuntu_8.04_or_newer"></a><h4> <span class="mw-headline"> Cannot connect with JConsole to a remote machine running Ubuntu 8.04 or newer </span></h4> |
| <p>For some reason the JConsole cannot make a <i><b>remote</b></i> connection to JVM running on Ubuntu 8.04 or newer installations. (We did some tests with SuSE Linux and had no problems.) |
| </p><p>This can be easily circumvented by modifying <tt>/etc/hosts</tt> file. |
| Simply replace <tt>127.0.1.1</tt> with the real IP address of your Ubuntu machine and you're ready to go. |
| </p><p>For example, if you have a line in /etc/hosts that looks like this: |
| </p><p><tt>127.0.1.1 jupiter</tt> (Where "jupiter" it the actual name of the Ubuntu machine in this example. You will almost certainly have some other name here ;-) |
| </p><p>then replace it with: |
| </p><p><tt>192.168.220.101 jupiter</tt> (Where 192.168.220.101 is the actual IP address of the Ubuntu machine in this example.) |
| </p> |
| <a name="Configuring.2FRunning_SMILA"></a><h2> <span class="mw-headline"> Configuring/Running SMILA </span></h2> |
| <a name="Crawler"></a><h3> <span class="mw-headline"> Crawler </span></h3> |
| <a name="I_started_a_crawl_job.2C_the_job_was_started_successfully.2C_but_nothing_seems_to_happen"></a><h4> <span class="mw-headline"> I started a crawl job, the job was started successfully, but nothing seems to happen </span></h4> |
| <p>Check the SMILA log file for errors. |
| </p><p>Check the state of the crawl job in <a href="http://localhost:8080/smila/jobmanager/jobs" class="external text" title="http://localhost:8080/smila/jobmanager/jobs" rel="nofollow">jobmanager state API</a> |
| </p> |
| <ul><li> if the state in your crawl job is "RUNNING", check the mode it has been started |
| <ul><li> if it says <span style="font-family:monospace;">"mode": "STANDARD"</span>, stop the job run (<span style="font-family:monospace;">POST <a href="http://localhost:8080/smila/jobmanager/jobs/" class="external free" title="http://localhost:8080/smila/jobmanager/jobs/" rel="nofollow">http://localhost:8080/smila/jobmanager/jobs/</a><job name>/<job run id>/finish</span>) and start it again with mode "runOnce", e.g. <span style="font-family:monospace;">POST <a href="http://localhost:8080/smila/jobmanager/jobs/" class="external free" title="http://localhost:8080/smila/jobmanager/jobs/" rel="nofollow">http://localhost:8080/smila/jobmanager/jobs/</a><job name> {"mode": "runOnce"</span>} |
| </li></ul> |
| </li><li> if the state is FINISHING |
| <ul><li> check the job into which the crawl job pushes its records for processed records or errors. |
| </li></ul> |
| </li><li> if everything up to now is OK |
| <ul><li> just wait some time, the autocommit handler maybe hasn't yet committed the data to the Solr index |
| </li><li> check <span style="font-family:monospace;">autoCommit</span> settings in the <tt>solrconfig.xml</tt> file of your Solr core. |
| </li></ul> |
| </li></ul> |
| <a name="I_tried_to_crawl.2Findex_a_data_source_.28with_the_deprecated_connectivity_framework.29_to_a_job.2C_JConsole_says_.22Crawler_..._sucessfully_started.22_but_nothing_seems_to_happen"></a><h4> <span class="mw-headline"> I tried to crawl/index a data source (with the deprecated connectivity framework) to a job, JConsole says "Crawler ... sucessfully started" but nothing seems to happen </span></h4> |
| <p>Check the SMILA log file for errors. |
| </p><p>Check if your specified job name exists and is running: |
| </p> |
| <ol><li> Open a browser and go to <a href="http://localhost:8080/smila/jobmanager/jobs" class="external text" title="http://localhost:8080/smila/jobmanager/jobs" rel="nofollow">jobmanager state API</a> |
| </li><li> browse to your specified job and check if there is an active job run (state: RUNNING) |
| </li><li> if so, check the job run details |
| </li></ol> |
| <p>If you find no errors in the log and your job is running but doesn't seem to do something: |
| </p> |
| <ol><li> Did you crawl the data source before? If so, try a <code>clearAll</code> on the DeltaIndexing-MBean in your JConsole |
| </li><li> Check your crawler configuration file (see <tt>configuration/org.eclipse.smila.connectivity.framework/</tt>) |
| </li></ol> |
| <a name="Pipeline"></a><h3> <span class="mw-headline"> Pipeline </span></h3> |
| <a name="Why_do_I_get_a_timeout_exception_during_a_.28long_running.29_pipeline_execution.3F"></a><h4> <span class="mw-headline"> Why do I get a timeout exception during a (long running) pipeline execution? </span></h4> |
| <p>In SMILA there's a timeout configured for a pipeline execution: |
| </p> |
| <dl><dd> <tt>configuration/org.eclipse.smila.processing.bpel/processor.properties</tt> |
| </dd></dl> |
| <p>See entry: <code>pipeline.timeout</code> |
| </p> |
| <a name="My_xpath_expression_doesnt_work"></a><h4> <span class="mw-headline"> My xpath expression doesnt work </span></h4> |
| <ol><li> Check that the expression is correct with a XPath tool |
| </li><li> ensure that the attributes are not filtered out, see <a href="Documentation/HowTo/How_to_filter_and_access_record_data_in_BPEL.html" title="SMILA/Documentation/HowTo/How to filter and access record data in BPEL">SMILA/Documentation/HowTo/How_to_filter_and_access_record_data_in_BPEL</a> |
| </li></ol> |
| <p><b>Helpful log points</b> |
| </p> |
| <table width="100%" style="font-family: Trebuchet MS;vertical-align:text-top;" border="1"> |
| |
| <tr style="font-weight:bold;font-size:larger;color:white;background:gray;text-align:center;"> |
| <td> Area </td><td> id </td><td> level </td><td> Comment |
| </td></tr> |
| <tr> |
| <td> BPEL </td><td> org.eclipse.smila.processing.bpel.PipeletManager </td><td> Trace </td><td> Log BPEL request before and after pipelet invocation |
| </td></tr></table> |
| <a name="Implementing_Pipelets_.2F_OSGi_Services_.2F_Bundles"></a><h2> <span class="mw-headline"> Implementing Pipelets / OSGi Services / Bundles </span></h2> |
| <a name="Configuration"></a><h3> <span class="mw-headline"> Configuration </span></h3> |
| <a name="I_want_to_use_the_ConfigUtils_class_in_my_Pipelet_to_read_the_configuration.2C_where_do_I_have_to_put_my_configuration_files.3F"></a><h4> <span class="mw-headline"> I want to use the <code>ConfigUtils</code> class in my Pipelet to read the configuration, where do I have to put my configuration files? </span></h4> |
| <p>Configuration files are searched for in the following order: |
| </p> |
| <ol><li> <tt><SMILA>/configuration/<bundle-name>/<config-file></tt> |
| </li><li> <tt><config-file></tt> in the root path of the bundle jar-file |
| </li></ol> |
| <p>See <a href="Project_Concepts/Simple_configuration_handler.html" title="SMILA/Project Concepts/Simple configuration handler">Configuration Handler</a> for more information. |
| </p> |
| <a name="Deploy_.2F_Launch"></a><h3> <span class="mw-headline"> Deploy / Launch </span></h3> |
| <a name="I_implemented.2Fdeployed_a_OSGi_Service_in_a_new_bundle_but_SMILA_log_says_that_it_couldn.27t_be_found"></a><h4> <span class="mw-headline"> I implemented/deployed a OSGi Service in a new bundle but SMILA log says that it couldn't be found </span></h4> |
| <p>Check your new bundle, it should contain a file like that: |
| </p> |
| <ul><li> <tt>OSGI-INF/<myService>.xml</tt> |
| </li></ul> |
| <p>In this file your new service has to be referenced. If you have copied the file from some other service, be sure to change the component name in the root element to something unique, because DS does not start multiple services with the same component name. |
| </p> |
| <ul><li> <tt><component name="<myService>" immediate="true"></tt> |
| </li></ul> |
| <p>Also the file has to be referenced from the MANIFEST.MF file of your bundle as a service component: |
| </p> |
| <ul><li> <tt>Service-Component: OSGI-INF/<myService>.xml</tt> |
| </li></ul> |
| <p>Also, you may need to include <tt>Import-Package:</tt> declarations for super-classes of your service implementation class even if there are no compile errors. |
| </p><p>On the "Build" page of the manifest editor, you must add the OSGI-INF directory to the binary build. |
| </p><p>And finally, your bundle has to be started at SMILA launch, e.g. by adding it to the config.ini. |
| </p><p>If you are using <b><tt>SMILA.launch</tt></b> to launch SMILA, you also have to open the run/debug configuration of SMILA, check the new bundle and set Auto-Start to "true". |
| </p> |
| <a name="I_get_classloading_errors_in_invocations_of_my_own_Pipelet_when_running_SMILA_outside_the_IDE._In_the_IDE_it_works"></a><h4> <span class="mw-headline"> I get classloading errors in invocations of my own Pipelet when running SMILA outside the IDE. In the IDE it works </span></h4> |
| <p>The error could look like this: |
| </p><p><code> |
| 2010-11-19 11:28:36,101 ERROR [ODEServerImpl-1 |
| ] vpu.JacobVPU - Method "run" in class "org.apache.ode.bpel.rtrep.v2.EXTENSIONACTIVITY" threw an unexpected exception. |
| java.lang.LinkageError: loader constraint violation: loader (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously initiated loading for a different type with name "org/w3c/dom/Document" |
| </code> |
| </p><p>We are not completely sure, why this happens, but a solution is to set this system property in the SMILA.ini file: |
| </p><p><code>-Dosgi.java.profile.bootdelegation=override</code> |
| </p><p>Thamks to Bogdan Sacaleanu for the solution. See this <a href="http://smila.markmail.org/thread/sj4vhcikq2wndtdp" class="external text" title="http://smila.markmail.org/thread/sj4vhcikq2wndtdp" rel="nofollow">thread in the smila-dev mailing list</a> for additional details. |
| </p> |
| <a name="I_get_classloading_errors_when_I_try_to_access_an_external_Web_Service_using_JAX-WS"></a><h4> <span class="mw-headline"> I get classloading errors when I try to access an external Web Service using JAX-WS </span></h4> |
| <p>Class loading problems often occur when using third party libraries that use the "thread context classloader" in OSGi, and standard implementations of Java specifications by Sun/Oracle (or other non-OSGi-aware parties...) do this very often. |
| </p><p>The only solution we currently know of is to wrap the critical section (in this case it's the construction of the webservice client class) in a piece of code like this: |
| </p> |
| <div dir="ltr" style="text-align: left;"><pre class="source-java"><span class="kw3">ClassLoader</span> tccl = <span class="kw3">Thread</span>.<span class="me1">currentThread</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">getContextClassLoader</span><span class="br0">(</span><span class="br0">)</span>; |
| <span class="kw1">try</span> <span class="br0">{</span> |
| <span class="kw3">Thread</span>.<span class="me1">currentThread</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">setContextClassLoader</span><span class="br0">(</span>getClass<span class="br0">(</span><span class="br0">)</span>.<span class="me1">getClassLoader</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span>; |
| <span class="coMULTI">/* |
| * initialize the client |
| */</span> |
| <span class="br0">}</span> <span class="kw1">finally</span> <span class="br0">{</span> |
| <span class="kw3">Thread</span>.<span class="me1">currentThread</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">setContextClassLoader</span><span class="br0">(</span>tccl<span class="br0">)</span>; |
| <span class="br0">}</span></pre></div> |
| <p>See also <a href="http://www.eclipse.org/forums/index.php/t/266362/" class="external text" title="http://www.eclipse.org/forums/index.php/t/266362/" rel="nofollow">this forum thread</a>. |
| </p> |
| <a name="More_classloader_errors_-_part_1"></a><h4> <span class="mw-headline"> More classloader errors - part 1 </span></h4> |
| <p>If you get an error like this: |
| </p> |
| <div dir="ltr" style="text-align: left;"><pre class="source-text">Caused by: java.lang.LinkageError: loader constraint violation: when resolving field "DATETIME" the class loader (instance of |
| org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) of the referring class, javax/xml/datatype/DatatypeConstants, and the class loader (instance of <bootloader>) for the field's resolved type, javax/xml/namespace/QName, have different Class objects for that type</pre></div> |
| <p>the reason is most likely that you have classes in the bundle classpath of your bundle that contains classes which are also part of the JDK runtime library (java.*, javax.*). Remove these classes from the bundle and it should work. |
| </p><p>See also <a href="http://www.eclipse.org/forums/index.php/t/266362/" class="external text" title="http://www.eclipse.org/forums/index.php/t/266362/" rel="nofollow">this forum thread</a>. |
| </p> |
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