By the default Solr Suggester component is returning 3 fields for each of the suggestions:
{
"term": "electronics and computer1",
"weight": 2199,
"payload": ""
}
Is there a way to extend number of fields returned for each of the suggestions? I would like to have for example additional fields here which I've added to the index (e.g. ID of an index record).
you can always stuff a number of infoss into a single payload field, separated by some char (like |). Simple, but works.
Related
Need some advise.
I have indexed documents in elasticsearch, now i want to search all results with one certain field value with all related document, like following if i search for reportId=12345, the results will have several documents related, how can i use one api to get results with not unique on certain field
POST myindex/type/_search
{
"query": {
"match": {
"reportId": "12345"
}
}
}
All:
Im pretty new to Solr faceting search, when I specify some facet fields which have phrase as value, how can I just treat the value as a whole phrase but not word and only return one facet. For example:
If I have documents with field like:
{ "category": "baby toy"}, {"category": "clothes"}
And the result returned will look like:
["baby", 0, "boy", 0, "clothes", 1]
I wonder why it works like this and how to change it to what I mentioned above, like:
["baby boy", 1, "clothes", 1]
Thanks
The field you use for faceting should be defined in schema.xml as a string (type="string") in order for the facet to use the whole text. Otherwise it will divide it according to the way it has been tokenized.
The faceting field should be indexed as whole. So in your schema.xml check how you are token-zing this field.
you should use Keyword Tokenizer that index entire text field as a single token.
Ref https://cwiki.apache.org/confluence/display/solr/Tokenizers#Tokenizers-KeywordTokenizer
There is a cloudant database that stores some documents.
There is also mobile app that takes those documents by using search indexes.
Question is:
Is it possible to make query "get me all indexes that appear after this one"?
For example:
I start app, and get from database documents with id 'aaa','aab' and 'aac'.
I want to store last id - 'aac' - in memory of my app.
Then, when I start the app, I want to get from database documents that appeared after 'aac'.
I think the main problem will be, that _ids are assigned as random strings, but I want to be sure.
when searching the index, try including the selector field in JSON object of the request body:
{
"selector": {
"_id": {
"$gt": "the_previous_id"
}
},
"sort": [
{
"_id": "asc"
}
]
}
in addition, from https://docs.cloudant.com/document.html:
"The _id field is either created by you, or generated automatically as a UUID by Cloudant."
therefore, it is possible to provide your own _ids when creating a document if the Cloudant generated _ids are not working for you.
condition operators:
https://docs.cloudant.com/cloudant_query.html#condition-operators
Solr creates multi-select facet counts for me as described here:
https://web.archive.org/web/20131202095639/http://wiki.apache.org/solr/SimpleFacetParameters#Multi-Select_Faceting_and_LocalParams
I also have various predefined searches that allow a user to browse the catalog. Here is one such example and its query parameters:
q=*:*
fq={!tag=g}genre:western
facet=on
facet.field={!ex=g}genre
facet.mincount=1
facet.limit=50
With this search I get up to 50 genre values in the facet list. I then go through and mark which values were selected by the user; western in this case. This works well except when western is pushed out of the top 50. So I manually add it to the list to make a total of 51. This way the user can see that it is indeed selected. The problem is I have to leave the count for western blank because I don't know it.
Is there a way to get counts for specific facet values such as western in this case? Or another approach to solve this issue?
I am using Solr 4.7.0.
Solr allows you to create a query-based facet count by using the facet.query parameter. When creating a filter query (fq) that's based on a facet field value, I now create a corresponding facet query:
facet.query={!ex=g}genre:western
and add it to the rest of my parameters:
q=*:*
fq={!tag=g}genre:western
facet=on
facet.field={!ex=g}genre
facet.query={!ex=g}genre:western
facet.mincount=1
facet.limit=50
The facet_queries object will now be populated in the solr response:
{
...
"facet_counts": {
"facet_queries": {
"{!ex=g}genre:western": 7
},
...
},
...
}
Regardless of what is returned in the facet_fields object, I'm now guaranteed to have a facet count for genre:western. With some parsing, facet field counts can be extracted from the facet queries.
I have a non trivial SOLR query, which already involves a filter query and facet calculations over multiple fields. One of the facet fields is a a multi value integer field, that is used to store categories. There are many possible categories and new ones are created dynamically, so using multiple fields is not an option.
What I want to do, is to restrict facet calculation over this field to a certain set of integers (= categories). So for example I want to calculate facets of this field, but only taking categories 3,7,9 and 15 into account. All other values in that field should be ignored.
How do I do that? Is there some build in functionality which can be used to solve this? Or do I have to write a custom search component?
The parameter can be defined for each field specified by the facet.field parameter – you can do it, by adding a parameter like this: facet.field_name.prefix.
I don't know about any way to define the facet base that should be different from the result, but one can use the facet.query to explicitly define each facet filter, e.g.:
facet.query={!key=3}category:3&facet.query={!key=7}category:7&facet.query={!key=9}category:9&facet.query={!key=15}category:15
Given the solr schema/data from this gist, the results will have something like this:
"facet_counts": {
"facet_queries": {
"3": 1,
"7": 1,
"9": 0,
"15": 0
},
"facet_fields": {
"category": [
"2",
2,
"1",
1,
"3",
1,
"7",
1,
"8",
1
]
},
"facet_dates": {},
"facet_ranges": {}
}
Thus giving the needed facet result.
I have some doubts about performance here(especially when there will be more than 4 categories and if the initial query is returning a lot of results), so it is better to do some benchmarking, before using this in production.
Not exactly the answer to my own question, but the solution we are using now: The numbers I want to filter on, build distinct groups. So we can prefix the id with a group id like this:
1.3
1.8
1.9
2.4
2.5
2.11
...
Having the data like this in SOLR, we can use facted prefixes to facet only over a single group: http://wiki.apache.org/solr/SimpleFacetParameters#facet.prefix