| Name | Description | Type | Package | Framework |
| FieldMutatingUpdateProcessor | Reusable base class for UpdateProcessors that will consider AddUpdateCommands and mutate the values associated with configured | Class | org.apache.solr.update.processor | Apache Solr Lucene |
| FieldMutatingUpdateProcessor .FieldNameSelector | Interface | org.apache.solr.update.processor.FieldMutatingUpdateProcessor | Apache Solr Lucene | |
| FieldMutatingUpdateProcessorFactory | Base class for implementing Factories for FieldMutatingUpdateProcessors and FieldValueMutatingUpdateProcessors. | Class | org.apache.solr.update.processor | Apache Solr Lucene |
| FieldMutatingUpdateProcessorFactory .SelectorParams | Class | org.apache.solr.update.processor.FieldMutatingUpdateProcessorFactory | Apache Solr Lucene | |