anchor.diff:        <str name="fieldType">pdates</str>
       </lst>
       <lst name="typeMapping">
  -      <str name="valueClass">java.lang.Long</str>
  +      <str name="valueClass">java.lang.Long</str> <!--6-->
         <str name="valueClass">java.lang.Integer</str>
         <str name="fieldType">plongs</str>
       </lst>
  
positive.code: 
  These Solr features, all controlled via `solrconfig.xml`, are:
  
  . Managed schema: Schema modifications are made at runtime through Solr APIs, which requires the use of `schemaFactory` that supports these changes - see <<schema-factory-definition-in-solrconfig.adoc#schema-factory-definition-in-solrconfig,Schema Factory Definition in SolrConfig>> for more details.
  . Field value class guessing: Previously unseen fields are run through a cascading set of value-based parsers, which guess the Java class of field values - parsers for Boolean, Integer, Long, Float, Double, and Date are currently available.
  . Automatic schema field addition, based on field value class(es): Previously unseen fields are added to the schema, based on field value Java classes, which are mapped to schema field types - see <<solr-field-types.adoc#solr-field-types,Solr Field Types>>.
  
  
negative.code: * {solr-javadocs}/solr-core/org/apache/solr/update/processor/ParseDateFieldUpdateProcessorFactory.html[ParseDateFieldUpdateProcessorFactory]
  * {solr-javadocs}/solr-core/org/apache/solr/update/processor/AddSchemaFieldsUpdateProcessorFactory.html[AddSchemaFieldsUpdateProcessorFactory]
  
  === Set the Default UpdateRequestProcessorChain
  
  Once the UpdateRequestProcessorChain has been defined, you must instruct your UpdateRequestHandlers to use it when working with index updates (i.e., adding, removing, replacing documents).
  
  There are two ways to do this. The update chain shown above has a `default=true` attribute which will use it for any update handler.
  
  An alternative, more explicit way is to use <<initparams-in-solrconfig.adoc#initparams-in-solrconfig,InitParams>> to set the defaults on all `/update` request handlers:
  
  [source,xml]
  ----
  