Package 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.

Since:

4.0.0

See Also:

• pickSubset(java.util.Collection<T>)

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

Constructors

Constructor	Description
FieldValueSubsetUpdateProcessorFactory()

Method Summary

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

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

getDefaultSelector, getSelector, inform, init, parseSelectorExclusionParams, parseSelectorParams

Methods inherited from class java.lang.Object

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

Constructor Details

FieldValueSubsetUpdateProcessorFactory

public FieldValueSubsetUpdateProcessorFactory()

Method Details

getInstance

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

Specified by:

getInstance in class UpdateRequestProcessorFactory

pickSubset

protected abstract <T> Collection<T> pickSubset(Collection<T> 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.