org.apache.lucene.document
Class Field.Index
- Field
- Serializable
public static final class Field.Index
implements Serializable
Specifies whether and how a field should be indexed.
NO
public static final Field.Index NO
Do not index the field value. This field can thus not be searched,
but one can still access its contents provided it is
stored
.
NO_NORMS
public static final Field.Index NO_NORMS
Index the field's value without an Analyzer, and disable
the storing of norms. No norms means that index-time boosting
and field length normalization will be disabled. The benefit is
less memory usage as norms take up one byte per indexed field
for every document in the index.
TOKENIZED
public static final Field.Index TOKENIZED
Index the field's value so it can be searched. An Analyzer will be used
to tokenize and possibly further normalize the text before its
terms will be stored in the index. This is useful for common text.
UN_TOKENIZED
public static final Field.Index UN_TOKENIZED
Index the field's value without using an Analyzer, so it can be searched.
As no analyzer is used the value will be stored as a single term. This is
useful for unique Ids like product numbers.
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