Field Properties by Use Case in Solr 4.5

From : h t t p s: //cwiki. apach e. org/confluence/display /solr/ Field+Properties+by+Use+Case

• Added by Cassandra Targett, last edited by Cassandra Targett on Jun 03, 2013

Here is a summary of common use cases, and the attributes the fields or field types should have to support the case. An entry of true or false in the table indicates that the option must be set to the given value for the use case to function correctly. If no entry is provided, the setting of that attribute has no impact on the case.

Use Case	indexed	stored	multiValued	omitNorms	termVectors	termPositions
search within field	true
retrieve contents		true
use as unique key	true		false
sort on field	true		false	true 1
use field boosts 5				false
document boosts affect searches within field				false
highlighting	true 4	true			2	true 3
faceting 5	true
add multiple values, maintaining order			true
field length affects doc score				false
MoreLikeThis 5					true 6

Notes:
¹ Recommended but not necessary.
² Will be used if present, but not necessary.
³ (if termVectors=true)
⁴ A tokenizer must be defined for the field, but it doesn't need to be indexed.
⁵ Described in Understanding Analyzers, Tokenizers, and Filters.
⁶ Term vectors are not mandatory here. If not true, then a stored field is analyzed. So term vectors are recommended, but only required if stored=false.