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java.lang.Objectorg.apache.lucene.index.IndexReader
org.apache.lucene.index.MultiReader
An IndexReader which reads multiple indexes, appending their content.
Constructor Summary | |
MultiReader(IndexReader[] subReaders)
Construct a MultiReader aggregating the named set of (sub)readers. |
Method Summary | |
int |
docFreq(Term t)
Returns the number of documents containing the term t . |
protected void |
doClose()
Implements close. |
protected void |
doCommit()
Implements commit. |
Document |
document(int n)
Returns the stored fields of the n th
Document in this index. |
protected void |
doDelete(int n)
Implements deletion of the document numbered docNum . |
protected void |
doSetNorm(int n,
java.lang.String field,
byte value)
Implements setNorm in subclass. |
protected void |
doUndeleteAll()
Implements actual undeleteAll() in subclass. |
java.util.Collection |
getFieldNames()
Returns a list of all unique field names that exist in the index pointed to by this IndexReader. |
java.util.Collection |
getFieldNames(boolean indexed)
Returns a list of all unique field names that exist in the index pointed to by this IndexReader. |
java.util.Collection |
getIndexedFieldNames(boolean storedTermVector)
|
TermFreqVector |
getTermFreqVector(int n,
java.lang.String field)
Return a term frequency vector for the specified document and field. |
TermFreqVector[] |
getTermFreqVectors(int n)
Return an array of term frequency vectors for the specified document. |
boolean |
hasDeletions()
Returns true if any documents have been deleted |
boolean |
isDeleted(int n)
Returns true if document n has been deleted |
int |
maxDoc()
Returns one greater than the largest possible document number. |
byte[] |
norms(java.lang.String field)
Returns the byte-encoded normalization factor for the named field of every document. |
void |
norms(java.lang.String field,
byte[] result,
int offset)
Reads the byte-encoded normalization factor for the named field of every document. |
int |
numDocs()
Returns the number of documents in this index. |
TermDocs |
termDocs()
Returns an unpositioned TermDocs enumerator. |
TermPositions |
termPositions()
Returns an unpositioned TermPositions enumerator. |
TermEnum |
terms()
Returns an enumeration of all the terms in the index. |
TermEnum |
terms(Term term)
Returns an enumeration of all terms after a given term. |
Methods inherited from class org.apache.lucene.index.IndexReader |
close, commit, delete, delete, directory, finalize, getCurrentVersion, getCurrentVersion, getCurrentVersion, indexExists, indexExists, indexExists, isLocked, isLocked, lastModified, lastModified, lastModified, open, open, open, setNorm, setNorm, termDocs, termPositions, undeleteAll, unlock |
Methods inherited from class java.lang.Object |
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public MultiReader(IndexReader[] subReaders) throws java.io.IOException
Construct a MultiReader aggregating the named set of (sub)readers. Directory locking for delete, undeleteAll, and setNorm operations is left to the subreaders.
Note that all subreaders are closed if this Multireader is closed.
subReaders
- set of (sub)readers
java.io.IOException
Method Detail |
public TermFreqVector[] getTermFreqVectors(int n) throws java.io.IOException
getTermFreqVectors
in class IndexReader
java.io.IOException
Field.isTermVectorStored()
public TermFreqVector getTermFreqVector(int n, java.lang.String field) throws java.io.IOException
IndexReader
getTermFreqVector
in class IndexReader
java.io.IOException
Field.isTermVectorStored()
public int numDocs()
IndexReader
numDocs
in class IndexReader
public int maxDoc()
IndexReader
maxDoc
in class IndexReader
public Document document(int n) throws java.io.IOException
IndexReader
n
th
Document
in this index.
document
in class IndexReader
java.io.IOException
public boolean isDeleted(int n)
IndexReader
isDeleted
in class IndexReader
public boolean hasDeletions()
IndexReader
hasDeletions
in class IndexReader
protected void doDelete(int n) throws java.io.IOException
IndexReader
docNum
.
Applications should call IndexReader.delete(int)
or IndexReader.delete(Term)
.
doDelete
in class IndexReader
java.io.IOException
protected void doUndeleteAll() throws java.io.IOException
IndexReader
doUndeleteAll
in class IndexReader
java.io.IOException
public byte[] norms(java.lang.String field) throws java.io.IOException
IndexReader
norms
in class IndexReader
java.io.IOException
Field.setBoost(float)
public void norms(java.lang.String field, byte[] result, int offset) throws java.io.IOException
IndexReader
norms
in class IndexReader
java.io.IOException
Field.setBoost(float)
protected void doSetNorm(int n, java.lang.String field, byte value) throws java.io.IOException
IndexReader
doSetNorm
in class IndexReader
java.io.IOException
public TermEnum terms() throws java.io.IOException
IndexReader
terms
in class IndexReader
java.io.IOException
public TermEnum terms(Term term) throws java.io.IOException
IndexReader
terms
in class IndexReader
java.io.IOException
public int docFreq(Term t) throws java.io.IOException
IndexReader
t
.
docFreq
in class IndexReader
java.io.IOException
public TermDocs termDocs() throws java.io.IOException
IndexReader
TermDocs
enumerator.
termDocs
in class IndexReader
java.io.IOException
public TermPositions termPositions() throws java.io.IOException
IndexReader
TermPositions
enumerator.
termPositions
in class IndexReader
java.io.IOException
protected void doCommit() throws java.io.IOException
IndexReader
doCommit
in class IndexReader
java.io.IOException
protected void doClose() throws java.io.IOException
IndexReader
doClose
in class IndexReader
java.io.IOException
public java.util.Collection getFieldNames() throws java.io.IOException
IndexReader
getFieldNames
in class IndexReader
java.io.IOException
- if there is a problem with accessing the indexIndexReader.getFieldNames()
public java.util.Collection getFieldNames(boolean indexed) throws java.io.IOException
IndexReader
getFieldNames
in class IndexReader
indexed
- true
if only indexed fields should be returned;
false
if only unindexed fields should be returned.
java.io.IOException
- if there is a problem with accessing the indexIndexReader.getFieldNames(boolean)
public java.util.Collection getIndexedFieldNames(boolean storedTermVector)
getIndexedFieldNames
in class IndexReader
storedTermVector
- if true, returns only Indexed fields that have term vector info,
else only indexed fields without term vector info
|
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