Package org.apache.solr.response.transform

Class GeoTransformerFactory

java.lang.Object

org.apache.solr.response.transform.TransformerFactory

org.apache.solr.response.transform.GeoTransformerFactory

All Implemented Interfaces:

TransformerFactory.FieldRenamer, NamedListInitializedPlugin

public class GeoTransformerFactory
extends TransformerFactory
implements TransformerFactory.FieldRenamer

This DocumentTransformer will write a Shape to the SolrDocument using the requested format. Supported formats include:

• GeoJSON
• WKT
• Polyshape

For more information see: spatial4j/FORMATS.md

The shape is either read from a stored field, or a ValueSource.

This transformer is useful when:

• You want to return a format different than the stored encoding (WKT vs GeoJSON)
• The Shape is stored in a ValueSource, not a stored field
• the value is not stored in a format the output understands (ie, raw GeoJSON)

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
GeoTransformerFactory()

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.

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

init

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.solr.response.transform.TransformerFactory.FieldRenamer

mayModifyValue

Constructor Detail

GeoTransformerFactory

public GeoTransformerFactory()

Method Detail

create

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

Specified by:

create in class TransformerFactory

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.