Apache Solr Reference Guide Covering Apache Solr 6.0

5
5
The " value" option forces an explicit value to always be used, while the " defaultValue" option provides a
default that can still be overridden using the " v" and " t" local parameters.
[explain] - ExplainAugmenterFactory
Augments each document with an inline explanation of it's score exactly like the information available about each
document in the debug section:
q=features:cache&wt=json&fl=id,[explain style=nl]
Supported values for " style" are " text", and " html", and "nl" which returns the information as structured data:
"response":{"numFound":2,"start":0,"docs":[
{
"id":"6H500F0",
"[explain]":{
"match":true,
"value":1.052226,
"description":"weight(features:cache in 2) [DefaultSimilarity], result
of:",
"details":[{
...
A default style can be configured by specifying an "args" parameter in your configuration:
nl
[child] - ChildDocTransformerFactory
This transformer returns all descendant documents of each parent document matching your query in a flat list
nested inside the matching parent document. This is useful when you have indexed nested child documents and
want to retrieve the child documents for the relevant parent documents for any type of search query.
fl=id,[child parentFilter=doc_type:book childFilter=doc_type:chapter limit=100]
Note that this transformer can be used even though the query itself is not a Block Join query.
When using this transformer, the parentFilter parameter must be specified, and works the same as in all
Block Join Queries, additional optional parameters are:
Apache Solr Reference Guide 6.0
334