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java.lang.Object org.apache.lucene.index.BinaryDocValues org.apache.lucene.index.SortedDocValues
public abstract class SortedDocValues
A per-document byte[] with presorted values.
Per-Document values in a SortedDocValues are deduplicated, dereferenced, and sorted into a dictionary of unique values. A pointer to the dictionary value (ordinal) can be retrieved for each document. Ordinals are dense and in increasing sorted order.
Field Summary | |
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static SortedDocValues |
EMPTY
An empty SortedDocValues which returns BytesRef.EMPTY_BYTES for every document |
Constructor Summary | |
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protected |
SortedDocValues()
Sole constructor. |
Method Summary | |
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void |
get(int docID,
BytesRef result)
Lookup the value for document. |
abstract int |
getOrd(int docID)
Returns the ordinal for the specified docID. |
abstract int |
getValueCount()
Returns the number of unique values. |
abstract void |
lookupOrd(int ord,
BytesRef result)
Retrieves the value for the specified ordinal. |
int |
lookupTerm(BytesRef key)
If key exists, returns its ordinal, else
returns -insertionPoint-1 , like Arrays.binarySearch . |
TermsEnum |
termsEnum()
Returns a TermsEnum over the values. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final SortedDocValues EMPTY
BytesRef.EMPTY_BYTES
for every document
Constructor Detail |
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protected SortedDocValues()
Method Detail |
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public abstract int getOrd(int docID)
docID
- document ID to lookup
public abstract void lookupOrd(int ord, BytesRef result)
ord
- ordinal to lookup (must be >= 0 and < getValueCount()
)result
- will be populated with the ordinal's valuegetOrd(int)
public abstract int getValueCount()
public void get(int docID, BytesRef result)
BinaryDocValues
get
in class BinaryDocValues
public int lookupTerm(BytesRef key)
key
exists, returns its ordinal, else
returns -insertionPoint-1
, like Arrays.binarySearch
.
key
- Key to look uppublic TermsEnum termsEnum()
TermsEnum
over the values.
The enum supports TermsEnum.ord()
and TermsEnum.seekExact(long)
.
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