org.apache.solr.update.processor
Class FieldValueSubsetUpdateProcessorFactory

java.lang.Object
  org.apache.solr.update.processor.UpdateRequestProcessorFactory
      org.apache.solr.update.processor.FieldMutatingUpdateProcessorFactory
          org.apache.solr.update.processor.FieldValueSubsetUpdateProcessorFactory

All Implemented Interfaces:

NamedListInitializedPlugin, SolrCoreAware

Direct Known Subclasses:

FirstFieldValueUpdateProcessorFactory, LastFieldValueUpdateProcessorFactory, MaxFieldValueUpdateProcessorFactory, MinFieldValueUpdateProcessorFactory, UniqFieldsUpdateProcessorFactory

public abstract class FieldValueSubsetUpdateProcessorFactory
extends FieldMutatingUpdateProcessorFactory

Base class for processors that want to mutate selected fields to only keep a subset of the original values.

See Also:

pickSubset(java.util.Collection)

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.update.processor.FieldMutatingUpdateProcessorFactory

FieldMutatingUpdateProcessorFactory.SelectorParams

Nested classes/interfaces inherited from class org.apache.solr.update.processor.UpdateRequestProcessorFactory

UpdateRequestProcessorFactory.RunAlways

Constructor Summary

FieldValueSubsetUpdateProcessorFactory()

Method Summary

UpdateRequestProcessor	getInstance(SolrQueryRequest req, SolrQueryResponse rsp, UpdateRequestProcessor next)
protected abstract Collection<Object>	pickSubset(Collection<Object> values) Method subclasses must override to specify which values should be kept.

Methods inherited from class org.apache.solr.update.processor.FieldMutatingUpdateProcessorFactory

getBooleanArg, getDefaultSelector, getSelector, inform, init, oneOrMany, parseSelectorExclusionParams, parseSelectorParams

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldValueSubsetUpdateProcessorFactory

public FieldValueSubsetUpdateProcessorFactory()

Method Detail

getInstance

public final UpdateRequestProcessor getInstance(SolrQueryRequest req,
                                                SolrQueryResponse rsp,
                                                UpdateRequestProcessor next)

Specified by:

getInstance in class UpdateRequestProcessorFactory

pickSubset

protected abstract Collection<Object> pickSubset(Collection<Object> values)

Method subclasses must override to specify which values should be kept. This method will not be called unless the collection contains more then one value.