Package org.apache.solr.response.transform

Class RawValueTransformerFactory

java.lang.Object

org.apache.solr.response.transform.TransformerFactory

org.apache.solr.response.transform.RawValueTransformerFactory

All Implemented Interfaces:

TransformerFactory.FieldRenamer, NamedListInitializedPlugin

public class RawValueTransformerFactory
extends TransformerFactory
implements TransformerFactory.FieldRenamer

Since:

solr 5.2

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.response.transform.TransformerFactory

TransformerFactory.FieldRenamer

Field Summary

Fields inherited from class org.apache.solr.response.transform.TransformerFactory

defaultFactories, defaultUserArgs

Constructor Summary

Constructors

Constructor	Description
RawValueTransformerFactory()
RawValueTransformerFactory(String wt)

Method Summary

Modifier and Type	Method	Description
DocTransformer	create(String display, SolrParams params, SolrQueryRequest req)
DocTransformer	create(String display, SolrParams params, SolrQueryRequest req, Map<String,String> renamedFields, Set<String> reqFieldNames)	Analogous to TransformerFactory.create(String, SolrParams, SolrQueryRequest), but to be implemented by TransformerFactorys that produce DocTransformers that may rename fields.
void	init(NamedList<?> args)	init will be called just once, immediately after creation.
boolean	mayModifyValue()	Returns true if implementations of this class may (even subtly) modify field values.

Methods inherited from class java.lang.Object

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

Constructor Detail

RawValueTransformerFactory

public RawValueTransformerFactory()

RawValueTransformerFactory

public RawValueTransformerFactory(String wt)

Method Detail

init

public void init(NamedList<?> args)

Description copied from interface: NamedListInitializedPlugin

init will be called just once, immediately after creation.

Source of the initialization arguments will typically be solrconfig.xml, but will ultimately depends on the plugin itself

Specified by:

init in interface NamedListInitializedPlugin

Overrides:

init in class TransformerFactory

Parameters:

args - non-null list of initialization parameters (may be empty)

create

public DocTransformer create(String display,
                             SolrParams params,
                             SolrQueryRequest req)

Specified by:

create in class TransformerFactory

mayModifyValue

public boolean mayModifyValue()

Description copied from interface: TransformerFactory.FieldRenamer

Returns true if implementations of this class may (even subtly) modify field values. (GeoTransformerFactory may do this, e.g.). To fail safe, the default implementation returns true. This method should be overridden to return false if the implementing class is guaranteed to not modify any values for the fields that it renames.

Specified by:

mayModifyValue in interface TransformerFactory.FieldRenamer

create

public DocTransformer create(String display,
                             SolrParams params,
                             SolrQueryRequest req,
                             Map<String,String> renamedFields,
                             Set<String> reqFieldNames)

Description copied from interface: TransformerFactory.FieldRenamer

Analogous to TransformerFactory.create(String, SolrParams, SolrQueryRequest), but to be implemented by TransformerFactorys that produce DocTransformers that may rename fields.

Specified by:

create in interface TransformerFactory.FieldRenamer

Parameters:

display - The destination field

params - Local params associated with this transformer (e.g., source field)

req - The current request

renamedFields - Maps source=>dest renamed fields. Implementations should check this first, updating their own "source" field(s) as necessary, and if renaming (not copying) fields, should also update this map with the implementations "own" introduced source=>dest field mapping

reqFieldNames - Set of explicitly requested field names; implementations should consult this set to determine whether it's appropriate to rename (vs. copy) a field (e.g.: boolean copy = reqFieldNames != null && reqFieldNames.contains(sourceField) )

Returns:

A transformer to be used in processing field values in returned documents.