Customizing REST service over Solr in WCS 8 Mod Pack1

Introduction
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There is a slight difference in the way custom fields of the OOB WCS tables are added in Solr response and ultimately in REST response. Solr extensions now needed to be put in x-schema.xml, x-data-config.xml and solrcore.properties instead of schema.xml and wc-data-config.xml

Steps to include custom data catentdesc.AUXDESCRIPTION1 column on PDP page REST call
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1) Go to Path- toolkit\search\solr\home\MC_10001\en_US\CatalogEntry\conf
Modify x-schema. xml,solrcore.properties and x-data-config.xml as follow-

x-schema.xml-
<field name="auxdescription1" type="wc_text" indexed="true" stored="true" required="false" multiValued="false"/>

x-data-config.xml-
<field column="AUXDESCRIPTION1" name="auxdescription1"/>

solrcore.properties-
dataImporter.ext.querySelect=CATENTDESC.AUXDESCRIPTION1,

2) Run preprocess with server stopped, and then start server and build Solr index
Newly included field can be validated using the Solr testing URL-
http://localhost/solr/MC_10001_CatalogEntry_en_US/select?q=catentry_id:<catentryId>

3) Make the new search profile in wc-search.xml by extending the existing search profile invoked in the REST service call under Search folder-
<_config:profile name="X_findCatalogEntry" extends="IBM_findProductByIds_Details">
       <_config:query inherits="true">
           <_config:postprocessor           classname="com.ibm.commerce.foundation.server.services.rest.search.postprocessor.solr.SolrRESTSearchCatalogEntryViewUserDataQueryPostprocessor" />
       </_config:query>
       <_config:result inherits="true">
               <_config:field name="auxdescription1" />
       </_config:result>   
    </_config:profile>

4) Make the new wc-component.xml under Search folder ext folder- (It takes care of the mapping we used to have it under wc-business-object-mediator.xml prior to version 7 feature pack 7)

<?xml version="1.0" encoding="UTF-8"?>
<_config:DevelopmentComponentConfiguration
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.ibm.com/xmlns/prod/commerce/foundation/config ../xsd/wc-component.xsd "
    xmlns:_config="http://www.ibm.com/xmlns/prod/commerce/foundation/config">

    <_config:valuemappingservice>
        <_config:valuemapping externalName="CatalogEntryUserDataFieldNameMapping" internalName="CatalogEntryUserDataFieldNameMapping">
                <_config:valuemap externalValue="AUXDESCRIPTION1" internalValue="auxdescription1" />
        </_config:valuemapping>
    </_config:valuemappingservice>
</_config:DevelopmentComponentConfiguration>


5) Make the new wc-rest-resourceconfig.xml file under /Search-Rest/WebContent/WEB-INF/config/com.ibm.commerce.rest-ext/wc-rest-resourceconfig.xml
 
<ResourceConfig>
    <Resource name="productview">
        <GetUri uri="store/{storeId}/productview/byId/{productId}"
                description="Get product by unique ID"                 searchProfile="X_findCatalogEntry,IBM_findProductByIds_Details,IBM_findProductByIdsWithAttributesAndAttachments,IBM_findProductByIds_Summary,IBM_findProductByIds_Summary_WithNoEntitlementCheck,IBM_Admin_findProductByIds"/>
    </Resource>
</ResourceConfig>

6) Restart the server and access the new indexed fields in userdata section using rest call with new search profile.

7) Testing
http://localhost/search/resources/store/10158/productview/byId/121892?responseFormat=xml&catalogId=10158&currency=USD