Difference between revisions of "Cassandra Scripted Data Source (BIRT)"

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*Datastax Cassandra Community
 
*Datastax Cassandra Community
 
*Datastax Cassandra Enterprise
 
*Datastax Cassandra Enterprise
BIRT connects to and queries a Cassandra data source using the Hector API. You must install the Hector client library JAR files in the appropriate folder. You can download the JAR files from [https://github.com/hector-client/hector/downloads here].
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BIRT connects to and queries a Cassandra data source using the Hector API. You must copy the Hector client library JAR files to the appropriate folder. You can download the JAR files from [https://github.com/hector-client/hector/downloads here].
 
== Installing the Hector client library JAR files for use with BIRT Designer ==
 
== Installing the Hector client library JAR files for use with BIRT Designer ==
org.eclipse.birt.me.prettyprint.hector_<version>/lib folder, and then restart BIRT Designer or the runtime deployment application.
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Copy the JAR files to the org.eclipse.birt.me.prettyprint.hector_<version>/lib/ folder and then restart BIRT Designer. If you do not install the JAR files, the following error message appears when you select the Cassandra Scripted Data Source in the New Data Source wizard:
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Unable to find Hector client library jars to support Cassandra Scripted Data Source
 
== Installing the Hector client library JAR files for use with the BIRT runtime deployment application ==  
 
== Installing the Hector client library JAR files for use with the BIRT runtime deployment application ==  
This example was built and tested with BIRT 2.2 RC0.
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For OSGi BIRT-runtime deployment, copy the JAR files to the org.eclipse.birt.me.prettyprint.hector_<version>/lib/ folder and restart the runtime deployment application. There is a known issue unrelated to Cassandra scripted data sources that may cause a ClassNotFound exception. Copy the commons-logging-api-1.1.1.jar to the birt/WEB-INF/lib/ folder resolve this problem.
== Example Files==
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For non-OSGi BIRT-runtime deployment, copy the JAR files to the <installation_folder>/webapps/birt_runtime/scriptlib/ folder and restart the runtime deployment application.
[https://bugs.eclipse.org/bugs/attachment.cgi?id=97678 Example Report Zipped]
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If you do not copy the JAR files, the following error message appears at runtime:
 
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Caused by: org.eclipse.birt.core.exception.CoreException: Error evaluating Javascript expression. Script engine error
== Description==
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This example accesses a city locator from zip code web service located here:
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http://www.webservicex.net/uszip.asmx?WSDL.
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The above URL is entered in the data source WSDL URL property. The data set is set to the
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getInfoByZIP Method. The default SOAP request template generated by the driver supplies one data set parameter for the
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zip code. It is important to remember any part of the SOAP request can be modified. To link a portion of the
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SOAP request to a data set parameter use the
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&?symbol?&
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syntax, where symbol is the name of the data set parameter.  In the data set editor this parameter can be linked to a
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report parameter.  In this example symbol is linked to the report parameter zipcode.
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Once the response is returned, it is parsed just like the XML data source using XPath syntax.
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== Comments ==
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Please enter comments below by selecting the edit icon to the right.
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You will need a Bugzilla account to add comments.
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----
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It appears that the web service that this report uses is no longer available.
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___
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Changed the report to use a new web service.
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[[Category:BIRT]]
 
[[Category:BIRT]]
 
[[Category:BIRT Example]]
 
[[Category:BIRT Example]]
 
[[Category:BIRT Example Report]]
 
[[Category:BIRT Example Report]]

Revision as of 14:56, 8 February 2013

< To: Report Developer Examples (BIRT)
BIRT Designer and runtime deployment packages now support scripted data source connections for use with Cassandra distributions, including:

  • Apache Cassandra
  • Datastax Cassandra Community
  • Datastax Cassandra Enterprise

BIRT connects to and queries a Cassandra data source using the Hector API. You must copy the Hector client library JAR files to the appropriate folder. You can download the JAR files from here.

Installing the Hector client library JAR files for use with BIRT Designer

Copy the JAR files to the org.eclipse.birt.me.prettyprint.hector_<version>/lib/ folder and then restart BIRT Designer. If you do not install the JAR files, the following error message appears when you select the Cassandra Scripted Data Source in the New Data Source wizard: Unable to find Hector client library jars to support Cassandra Scripted Data Source

Installing the Hector client library JAR files for use with the BIRT runtime deployment application

For OSGi BIRT-runtime deployment, copy the JAR files to the org.eclipse.birt.me.prettyprint.hector_<version>/lib/ folder and restart the runtime deployment application. There is a known issue unrelated to Cassandra scripted data sources that may cause a ClassNotFound exception. Copy the commons-logging-api-1.1.1.jar to the birt/WEB-INF/lib/ folder resolve this problem. For non-OSGi BIRT-runtime deployment, copy the JAR files to the <installation_folder>/webapps/birt_runtime/scriptlib/ folder and restart the runtime deployment application. If you do not copy the JAR files, the following error message appears at runtime: Caused by: org.eclipse.birt.core.exception.CoreException: Error evaluating Javascript expression. Script engine error