org.apache.solr.update.processor
Class UniqFieldsUpdateProcessorFactory
java.lang.Object
org.apache.solr.update.processor.UpdateRequestProcessorFactory
org.apache.solr.update.processor.FieldMutatingUpdateProcessorFactory
org.apache.solr.update.processor.FieldValueSubsetUpdateProcessorFactory
org.apache.solr.update.processor.UniqFieldsUpdateProcessorFactory
- All Implemented Interfaces:
- NamedListInitializedPlugin, SolrCoreAware
public class UniqFieldsUpdateProcessorFactory
- extends FieldValueSubsetUpdateProcessorFactory
Removes duplicate values found in fields matching the specified conditions.
The existing field values are iterated in order, and values are removed when
they are equal to a value that has already been seen for this field.
By default this processor matches no fields.
In the example configuration below, if a document initially contains the values
"Steve","Lucy","Jim",Steve","Alice","Bob","Alice"
in a field named
foo_uniq
then using this processor will result in the final list of
field values being "Steve","Lucy","Jim","Alice","Bob"
<processor class="solr.UniqFieldsUpdateProcessorFactory">
<str name="fieldRegex">.*_uniq</str>
</processor>
Field Summary |
static org.slf4j.Logger |
log
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
log
public static final org.slf4j.Logger log
UniqFieldsUpdateProcessorFactory
public UniqFieldsUpdateProcessorFactory()
getDefaultSelector
public FieldMutatingUpdateProcessor.FieldNameSelector getDefaultSelector(SolrCore core)
- Description copied from class:
FieldMutatingUpdateProcessorFactory
- Defines the default selection behavior when the user has not
configured any specific criteria for selecting fields. The Default
implementation matches all fields, and should be overridden by subclasses
as needed.
- Overrides:
getDefaultSelector
in class FieldMutatingUpdateProcessorFactory
- See Also:
FieldMutatingUpdateProcessor.SELECT_ALL_FIELDS
init
public void init(NamedList args)
- Description copied from class:
FieldMutatingUpdateProcessorFactory
- Handles common initialization related to source fields for
constructing the FieldNameSelector to be used.
Will error if any unexpected init args are found, so subclasses should
remove any subclass-specific init args before calling this method.
- Specified by:
init
in interface NamedListInitializedPlugin
- Overrides:
init
in class FieldMutatingUpdateProcessorFactory
pickSubset
public Collection pickSubset(Collection values)
- Description copied from class:
FieldValueSubsetUpdateProcessorFactory
- 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.
- Specified by:
pickSubset
in class FieldValueSubsetUpdateProcessorFactory
Copyright © 2000-2013 Apache Software Foundation. All Rights Reserved.