Package org.apache.lucene.document

The logical representation of a Document for indexing and searching.

See: Description

Class Summary

Class	Description
BinaryDocValuesField	Field that stores a per-document BytesRef value.
BinaryPoint	An indexed binary field for fast range filters.
CompressionTools	Simple utility class providing static methods to compress and decompress binary data for stored fields.
DateTools	Provides support for converting dates to strings and vice-versa.
Document	Documents are the unit of indexing and search.
DocumentStoredFieldVisitor	A StoredFieldVisitor that creates a Document from stored fields.
DoubleDocValuesField	Syntactic sugar for encoding doubles as NumericDocValues via Double.doubleToRawLongBits(double).
DoublePoint	An indexed double field for fast range filters.
Field	Expert: directly create a field for a document.
FieldType	Describes the properties of a field.
FloatDocValuesField	Syntactic sugar for encoding floats as NumericDocValues via Float.floatToRawIntBits(float).
FloatPoint	An indexed float field for fast range filters.
IntPoint	An indexed int field for fast range filters.
LegacyDoubleField	Deprecated Please use DoublePoint instead
LegacyFloatField	Deprecated Please use FloatPoint instead
LegacyIntField	Deprecated Please use IntPoint instead
LegacyLongField	Deprecated Please use LongPoint instead
LongPoint	An indexed long field for fast range filters.
NumericDocValuesField	Field that stores a per-document long value for scoring, sorting or value retrieval.
SortedDocValuesField	Field that stores a per-document BytesRef value, indexed for sorting.
SortedNumericDocValuesField	Field that stores a per-document long values for scoring, sorting or value retrieval.
SortedSetDocValuesField	Field that stores a set of per-document BytesRef values, indexed for faceting,grouping,joining.
StoredField	A field whose value is stored so that IndexSearcher.doc(int) and IndexReader.document() will return the field and its value.
StringField	A field that is indexed but not tokenized: the entire String value is indexed as a single token.
TextField	A field that is indexed and tokenized, without term vectors.

Enum Summary

Enum	Description
DateTools.Resolution	Specifies the time granularity.
Field.Store	Specifies whether and how a field should be stored.
FieldType.LegacyNumericType	Deprecated Please switch to PointValues instead

Package org.apache.lucene.document Description

The logical representation of a Document for indexing and searching.

The document package provides the user level logical representation of content to be indexed and searched. The package also provides utilities for working with Documents and IndexableFields.

Document and IndexableField

A Document is a collection of IndexableFields. A IndexableField is a logical representation of a user's content that needs to be indexed or stored. IndexableFields have a number of properties that tell Lucene how to treat the content (like indexed, tokenized, stored, etc.) See the Field implementation of IndexableField for specifics on these properties.

Note: it is common to refer to Documents having Fields, even though technically they have IndexableFields.

Working with Documents

First and foremost, a Document is something created by the user application. It is your job to create Documents based on the content of the files you are working with in your application (Word, txt, PDF, Excel or any other format.) How this is done is completely up to you. That being said, there are many tools available in other projects that can make the process of taking a file and converting it into a Lucene Document.

The DateTools is a utility class to make dates and times searchable. IntPoint, LongPoint, FloatPoint and DoublePoint enable indexing of numeric values (and also dates) for fast range queries using PointRangeQuery