Documents and fields

Use this page when choosing how application data becomes a searchable document.

A LeanDocument contains named fields. A field can be indexed for matching, stored for retrieval, exposed through DocValues for sorting and aggregation, or configured for term vectors and payloads.

Need	Field type	Notes
Full-text matching	TextField	Analyse text at index time.
Exact identity or filter	StringField	Preserves the whole value as one term.
Numeric range, sort or aggregation	Numeric field with DocValues	Use the appropriate integer, floating-point or date representation.
Semantic similarity	VectorField	All vectors in a field share one dimension.
Return original value	Stored field	Storage alone does not make a field searchable.
Highlighting or positional queries	Term vectors or positions	Adds index size and indexing cost.

See also: Field types, DocValues, and LeanDocument.