public class AddSchemaFieldsUpdateProcessorFactory extends UpdateRequestProcessorFactory implements SolrCoreAware, UpdateRequestProcessorFactory.RunAlways
This processor will dynamically add fields to the schema if an input document contains one or more fields that don't match any field or dynamic field in the schema.
By default, this processor selects all fields that don't match a schema field or dynamic field. The "fieldName" and "fieldRegex" selectors may be specified to further restrict the selected fields, but the other selectors ("typeName", "typeClass", and "fieldNameMatchesSchemaField") may not be specified.
This processor is configured to map from each field's values' class(es) to the schema field type that will be used when adding the new field to the schema. All new fields are then added to the schema in a single batch. If schema addition fails for any field, addition is re-attempted only for those that don’t match any schema field. This process is repeated, either until all new fields are successfully added, or until there are no new fields (presumably because the fields that were new when this processor started its work were subsequently added by a different update request, possibly on a different node).
This processor takes as configuration a sequence of zero or more "typeMapping"-s from
one or more "valueClass"-s, specified as either an <arr>
of
<str>
, or multiple <str>
with the same name,
to an existing schema "fieldType".
If more than one "valueClass" is specified in a "typeMapping", field values with any
of the specified "valueClass"-s will be mapped to the specified target "fieldType".
The "typeMapping"-s are attempted in the specified order; if a field value's class
is not specified in a "valueClass", the next "typeMapping" is attempted. If no
"typeMapping" succeeds, then either the "typeMapping" configured with
<bool name="default">true</bool>
is used, or if none is so
configured, the lt;str name="defaultFieldType">...</str>
is
used.
Zero or more "copyField" directives may be included with each "typeMapping", using a
<lst>
. The copy field source is automatically set to the new field
name; "dest" must specify the destination field or dynamic field in a
<str>
; and "maxChars" may optionally be specified in an
<int>
.
Example configuration:
<updateProcessor class="solr.AddSchemaFieldsUpdateProcessorFactory" name="add-schema-fields"> <lst name="typeMapping"> <str name="valueClass">java.lang.String</str> <str name="fieldType">text_general</str> <lst name="copyField"> <str name="dest">*_str</str> <int name="maxChars">256</int> </lst> <!-- Use as default mapping instead of defaultFieldType --> <bool name="default">true</bool> </lst> <lst name="typeMapping"> <str name="valueClass">java.lang.Boolean</str> <str name="fieldType">booleans</str> </lst> <lst name="typeMapping"> <str name="valueClass">java.util.Date</str> <str name="fieldType">pdates</str> </lst> <lst name="typeMapping"> <str name="valueClass">java.lang.Long</str> <str name="valueClass">java.lang.Integer</str> <str name="fieldType">plongs</str> </lst> <lst name="typeMapping"> <str name="valueClass">java.lang.Number</str> <str name="fieldType">pdoubles</str> </lst> </updateProcessor>
UpdateRequestProcessorFactory.RunAlways
Constructor and Description |
---|
AddSchemaFieldsUpdateProcessorFactory() |
Modifier and Type | Method and Description |
---|---|
UpdateRequestProcessor |
getInstance(SolrQueryRequest req,
SolrQueryResponse rsp,
UpdateRequestProcessor next) |
void |
inform(SolrCore core) |
void |
init(NamedList args) |
public AddSchemaFieldsUpdateProcessorFactory()
public UpdateRequestProcessor getInstance(SolrQueryRequest req, SolrQueryResponse rsp, UpdateRequestProcessor next)
getInstance
in class UpdateRequestProcessorFactory
public void init(NamedList args)
init
in interface NamedListInitializedPlugin
init
in class UpdateRequestProcessorFactory
public void inform(SolrCore core)
inform
in interface SolrCoreAware
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