CODEWITHSUNDEEP
javasolrsolrj
MarcA
MarcA

Reputation: 227

Solr 5.2 How to define a List or collection of Strings

I am new to Solr and really like it thus far.

I have been able to define in the Schema.xml my data types for indexing and using Solrj Bean annotations @field on my solr domain objects I have my Java application calling solrClient and saving them which is great.

Unfortunately I am unable to see or understand how I would model a collections of Strings in ether Schema.xml or the Java object.

What I would like to do is something like this:

@field
private String someField;
@field
private String anotherField;
@field   
private List<String> someCollectionOfFields;

I don't understand how I should model this scenario, At first I though of flattening out the collection as a comma separated list and defining it as a String but don't understand how Solr will treat it?

So if I have the following "Big Bus", "Big Red Bus", "Big Red Car" I wold like the 3 strings indexed as separate terms and not just the word Big causing all 3 to be returned.

Should I be doing something like this?

I am struggling to find how to model collections in the docs, all I see is Date Fields, Money Fields and others but no collections, any help would be great.

Thanks Marc

Upvotes: 3

Views: 2339

Answers (2)

Ramzy
Ramzy

Reputation: 7138

In addition to the above, if you have List of objects rather than just strings, you can use nested(child) documents here. This will help you query based on child and get parent docs and vice versa

Upvotes: 0

Aneesh Mon N
Aneesh Mon N

Reputation: 696

Solution for your problem is Solr field type with property multiValued=true

define a field as below

<field name="bustypes" type="string" indexed="true" stored="true" multiValued="true"/>

This will allow as to send multiple values for the same field for the same doc.

Say

<add>
    <doc>
        <field name="id">1234</field>
        <field name="bustypes">Big Bus</field>
        <field name="bustypes">Big Red Bus</field>
        <field name="bustypes">Big Red Car</field>
    </doc>
</add>

Upvotes: 4

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