I wish to index well formed xml documents as they are without escaping
all the tags with lt;s and gt;s. I searched this mailing list's archive
and found someone who suggested that you can make a new field type
having a file something like:
import org.apache.solr.schema.TextField;
import org.apache.solr.request.XMLWriter;
import org.apache.lucene.document.Fieldable;
import java.io.IOException;
public class XMLField extends TextField {
public void write(XMLWriter xmlWriter, String name, Fieldable f) throws
IOException {
xmlWriter.writePrim("xml", name, f.stringValue(), false);
}
}
and then loading it as a plugin by placing the compiled java file into
the /lib directory. Then in my schema I have:
<fieldtype name="xmltext" class="solr.XMLField" />
However when I post data that uses this new field type I get the
following response:
<result status="1">java.lang.NullPointerException
at org.apache.solr.core.SolrCore.update(SolrCore.java:693)
at
org.apache.solr.servlet.SolrUpdateServlet.doPost(SolrUpdateServlet.java:53)
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:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
</result>
I have no idea what I have done wrong - can anyone help?
James
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