3.7.1.2.5 NullAnalyzer

Any scalar field can be assigned the NullAnalyzer, which prevents the corresponding field from being indexed. Values for the field are stored as-is and are not indexed, thereby reducing storage space. Searching is not allowed for un-indexed fields. Hence, fields assigned the NullAnalyzer are “stored only”. Note that binary fields are not indexed and must use the NullAnalyzer.