org.apache.solr.core

Class AbstractSolrEventListener

java.lang.Object

org.apache.solr.core.AbstractSolrEventListener

All Implemented Interfaces:

SolrEventListener, NamedListInitializedPlugin

Direct Known Subclasses:

QuerySenderListener, RunExecutableListener

class AbstractSolrEventListener
extends java.lang.Object
implements SolrEventListener

Field Summary

Fields

Modifier and Type	Field and Description
protected NamedList	args
protected SolrCore	core

Fields inherited from interface org.apache.solr.core.SolrEventListener

log

Constructor Summary

Constructors

Constructor and Description
AbstractSolrEventListener(SolrCore core)

Method Summary

Modifier and Type	Method and Description
protected NamedList	addEventParms(SolrIndexSearcher currentSearcher, NamedList nlst) Add the EventParams.EVENT with either the EventParams.NEW_SEARCHER or EventParams.FIRST_SEARCHER values depending on the value of currentSearcher.
void	init(NamedList args)
void	newSearcher(SolrIndexSearcher newSearcher, SolrIndexSearcher currentSearcher) The searchers passed here are only guaranteed to be valid for the duration of this method call, so care should be taken not to spawn threads or asynchronous tasks with references to these searchers.
void	postCommit()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

core

protected final SolrCore core

args

protected NamedList args

Constructor Detail

AbstractSolrEventListener

public AbstractSolrEventListener(SolrCore core)

Method Detail

init

public void init(NamedList args)

Specified by:

init in interface NamedListInitializedPlugin

postCommit

public void postCommit()

Specified by:

postCommit in interface SolrEventListener

newSearcher

public void newSearcher(SolrIndexSearcher newSearcher,
                        SolrIndexSearcher currentSearcher)

Description copied from interface: SolrEventListener

The searchers passed here are only guaranteed to be valid for the duration of this method call, so care should be taken not to spawn threads or asynchronous tasks with references to these searchers.

Implementations should add the EventParams.EVENT parameter and set it to a value of either:

• EventParams.FIRST_SEARCHER - First Searcher event
• EventParams.NEW_SEARCHER - New Searcher event

Sample:

    if (currentSearcher != null) {
      nlst.add(CommonParams.EVENT, CommonParams.NEW_SEARCHER);
    } else {
      nlst.add(CommonParams.EVENT, CommonParams.FIRST_SEARCHER);
    }

 

Specified by:

newSearcher in interface SolrEventListener

Parameters:

newSearcher - The new SolrIndexSearcher to use

currentSearcher - The existing SolrIndexSearcher. null if this is a firstSearcher event.

See Also:

addEventParms(org.apache.solr.search.SolrIndexSearcher, org.apache.solr.common.util.NamedList)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

addEventParms

protected NamedList addEventParms(SolrIndexSearcher currentSearcher,
                                  NamedList nlst)

Add the EventParams.EVENT with either the EventParams.NEW_SEARCHER or EventParams.FIRST_SEARCHER values depending on the value of currentSearcher.

Makes a copy of NamedList and then adds the parameters.

Parameters:

currentSearcher - If null, add FIRST_SEARCHER, otherwise NEW_SEARCHER

nlst - The named list to add the EVENT value to