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Document
for indexing and searching.
See:
Description
Class Summary | |
---|---|
BinaryDocValuesField | Field that stores a per-document BytesRef value. |
ByteDocValuesField | Deprecated. use NumericDocValuesField instead. |
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. |
DerefBytesDocValuesField | Deprecated. Use BinaryDocValuesField instead. |
Document | Documents are the unit of indexing and search. |
DocumentStoredFieldVisitor | A StoredFieldVisitor that creates a Document containing all stored fields, or only specific
requested fields provided to DocumentStoredFieldVisitor.DocumentStoredFieldVisitor(Set) . |
DoubleDocValuesField | Syntactic sugar for encoding doubles as NumericDocValues
via Double.doubleToRawLongBits(double) . |
DoubleField |
Field that indexes double values
for efficient range filtering and sorting. |
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) . |
FloatField |
Field that indexes float values
for efficient range filtering and sorting. |
IntDocValuesField | Deprecated. use NumericDocValuesField instead. |
IntField |
Field that indexes int values
for efficient range filtering and sorting. |
LongDocValuesField | Deprecated. use NumericDocValuesField instead. |
LongField |
Field that indexes long values
for efficient range filtering and sorting. |
NumericDocValuesField |
Field that stores a per-document long value for scoring,
sorting or value retrieval. |
PackedLongDocValuesField | Deprecated. use NumericDocValuesField instead. |
ShortDocValuesField | Deprecated. use NumericDocValuesField instead. |
SortedBytesDocValuesField | Deprecated. Use SortedDocValuesField instead. |
SortedDocValuesField |
Field that stores
a per-document BytesRef value, indexed for
sorting. |
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(int, org.apache.lucene.index.StoredFieldVisitor) will
return the field and its value. |
StraightBytesDocValuesField | Deprecated. Use BinaryDocValuesField instead. |
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 | |
---|---|
DateTools.Resolution | Specifies the time granularity. |
Field.Index | Deprecated. This is here only to ease transition from the pre-4.0 APIs. |
Field.Store | Specifies whether and how a field should be stored. |
Field.TermVector | Deprecated. This is here only to ease transition from the pre-4.0 APIs. |
FieldType.NumericType | Data type of the numeric value |
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 Document
s and IndexableField
s.
A Document
is a collection of IndexableField
s. A
IndexableField
is a logical representation of a user's content that needs to be indexed or stored.
IndexableField
s 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 Document
s having Field
s, even though technically they have
IndexableField
s.
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
(remember, Lucene only searches text). IntField
, LongField
,
FloatField
and DoubleField
are a special helper class
to simplify indexing of numeric values (and also dates) for fast range range queries with NumericRangeQuery
(using a special sortable string representation of numeric values).
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