Hi,
Thank for helping us.
I’m creating a ‘helloword’ plugin in Solr 1.4 in BasicHelloRequestHandler.java
In solrconfig.xml, I added:
<requestHandler name="hello"
class="com.polyspot.mercury.handler.BasicHelloRequestHandler" >
<!-- default values for query parameters -->
<lst name="defaults">
<str name="message">Default message</str>
<int name="anumber">-10</int>
</lst>
</requestHandler>
I verified ‘hello’ plugin is figured well at:
http://localhost:8983/solr/admin/plugins
When I executed: http://localhost:8983/solr/select?qt=hello, the
java.lang.AbstractMethodError raised:
type Rapport d'état
message null java.lang.AbstractMethodError at
org.apache.solr.core.SolrCore.execute(SolrCore.java:1316) at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:241)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at
java.lang.Thread.run(Thread.java:595)
I supposed that handleRequest in the BasicHelloRequestHandler isn’t called.
Here’s BasicHelloRequestHandler .java code:
import com.polyspot.mercury.common.params.HelloParams;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.common.util.SimpleOrderedMap;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.request.SolrRequestHandler;
import org.apache.solr.response.SolrQueryResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.URL;
/**
* User: nguyenht
* Date: 26 nov. 2010
*/
public class BasicHelloRequestHandler implements SolrRequestHandler {
protected static Logger log =
LoggerFactory.getLogger(BasicHelloRequestHandler.class);
protected NamedList initArgs = null;
protected SolrParams defaults;
/**
* <code>init</code> will be called just once, immediately after creation.
* <p>The args are user-level initialization parameters that
* may be specified when declaring a request handler in
* solrconfig.xml
*/
public void init(NamedList args) {
log.info("initializing BasicHelloRequestHandler: " + args);
initArgs = args;
if (args != null) {
Object o = args.get("defaults");
if (o != null && o instanceof NamedList) {
defaults = SolrParams.toSolrParams((NamedList) o);
}
}
}
/**
* Handles a query request, this method must be thread safe.
* <p/>
* Information about the request may be obtained from <code>req</code> and
* response information may be set using <code>rsp</code>.
* <p/>
* There are no mandatory actions that handleRequest must perform.
* An empty handleRequest implementation would fulfill
* all interface obligations.
*/
public void handleRequest(SolrQueryRequest solrQueryRequest,
SolrQueryResponse solrQueryResponse) {
log.info("handling request for BasicHelloRequestHandler: ");
//get request params
SolrParams params = solrQueryRequest.getParams();
String message = params.get(HelloParams.MESSAGE);
if (message == null)
{
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "message is
mandatory");
}
log.info("get anumber ");
Integer anumber = params.getInt(HelloParams.ANUMBER);
if (anumber == null)
{
anumber = defaults.getInt(HelloParams.ANUMBER);
}
int messageLength = message.length();
//write response
solrQueryResponse.add("yousaid", message);
solrQueryResponse.add("message length", messageLength);
solrQueryResponse.add("optionalNumber", anumber);
}
/*
methods below are for JMX info
*/
public String getName() {
return this.getClass().getName();
}
public String getVersion() {
return "1"; //TODO implement this
}
public String getDescription() {
return "hello"; //TODO implement this
}
public Category getCategory() {
return Category.OTHER; //TODO implement this
}
public String getSourceId() {
return "some hello source id from " +
BasicHelloRequestHandler.class.getCanonicalName();
}
public String getSource() {
return "some hello source "; //TODO implement this
}
public URL[] getDocs() {
return null; //TODO implement this
}
public NamedList getStatistics() {
return new SimpleOrderedMap();
}
}
)
