java.lang.Object
- org.apache.lucene.index.RandomIndexWriter

All Implemented Interfaces:

Closeable, AutoCloseable
```
public class RandomIndexWriter
extends Object
implements Closeable
```
Silly class that randomizes the indexing experience. EG it may swap in a different merge policy/scheduler; may commit periodically; may or may not forceMerge in the end, may flush by doc count instead of RAM, etc.

Field Summary

Fields
Modifier and Type Field Description

IndexWriter w

Constructor Summary

Constructors
Constructor	Description
`RandomIndexWriter(Random r, Directory dir)`	create a RandomIndexWriter with a random config: Uses TEST_VERSION_CURRENT and Whitespace+LowercasingAnalyzer
`RandomIndexWriter(Random r, Directory dir, Analyzer a)`	create a RandomIndexWriter with a random config: Uses TEST_VERSION_CURRENT
`RandomIndexWriter(Random r, Directory dir, IndexWriterConfig c)`	create a RandomIndexWriter with the provided config
`RandomIndexWriter(Random r, Directory dir, Version v, Analyzer a)`	create a RandomIndexWriter with a random config

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addDocument(Document doc)`	Adds a Document.
`void`	`addDocuments(Collection<Document> docs)`
`void`	`addIndexes(IndexReader... readers)`
`void`	`addIndexes(Directory... dirs)`
`void`	`close()`	Close this writer.
`void`	`commit()`
`void`	`deleteAll()`
`void`	`deleteDocuments(Term term)`
`void`	`deleteDocuments(Query q)`
`void`	`forceMerge(int maxSegmentCount)`	Forces a forceMerge.
`void`	`forceMergeDeletes()`
`void`	`forceMergeDeletes(boolean doWait)`
`IndexReader`	`getReader()`
`IndexReader`	`getReader(boolean applyDeletions)`
`int`	`maxDoc()`
`int`	`numDocs()`
`void`	`setDoRandomForceMerge(boolean v)`
`void`	`setDoRandomForceMergeAssert(boolean v)`
`void`	`updateDocument(Term t, Document doc)`	Updates a document.
`void`	`updateDocuments(Term delTerm, Collection<Document> docs)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- w
```
public IndexWriter w
```

Constructor Detail

RandomIndexWriter

public RandomIndexWriter(Random r,
                         Directory dir)
                  throws IOException

create a RandomIndexWriter with a random config: Uses TEST_VERSION_CURRENT and Whitespace+LowercasingAnalyzer

Throws:: IOException

RandomIndexWriter

public RandomIndexWriter(Random r,
                         Directory dir,
                         Analyzer a)
                  throws IOException

create a RandomIndexWriter with a random config: Uses TEST_VERSION_CURRENT

Throws:: IOException

RandomIndexWriter

public RandomIndexWriter(Random r,
                         Directory dir,
                         Version v,
                         Analyzer a)
                  throws IOException

create a RandomIndexWriter with a random config

Throws:: IOException

RandomIndexWriter

public RandomIndexWriter(Random r,
                         Directory dir,
                         IndexWriterConfig c)
                  throws IOException

create a RandomIndexWriter with the provided config

Throws:: IOException

Method Detail

addDocument
```
public void addDocument(Document doc)
                 throws IOException
```
Adds a Document.

Throws:

IOException

See Also:

IndexWriter.addDocument(Document)

addDocuments

public void addDocuments(Collection<Document> docs)
                  throws IOException

Throws:: IOException

updateDocuments

public void updateDocuments(Term delTerm,
                            Collection<Document> docs)
                     throws IOException

Throws:: IOException

updateDocument

public void updateDocument(Term t,
                           Document doc)
                    throws IOException

Updates a document.

Throws:: IOException
See Also:: IndexWriter.updateDocument(Term, Document)

addIndexes

public void addIndexes(Directory... dirs)
                throws CorruptIndexException,
                       IOException

Throws:: CorruptIndexException; IOException

addIndexes

public void addIndexes(IndexReader... readers)
                throws CorruptIndexException,
                       IOException

Throws:: CorruptIndexException; IOException

deleteDocuments

public void deleteDocuments(Term term)
                     throws CorruptIndexException,
                            IOException

Throws:: CorruptIndexException; IOException

deleteDocuments

public void deleteDocuments(Query q)
                     throws CorruptIndexException,
                            IOException

Throws:: CorruptIndexException; IOException

commit

public void commit()
            throws CorruptIndexException,
                   IOException

Throws:: CorruptIndexException; IOException

numDocs

public int numDocs()
            throws IOException

Throws:: IOException

maxDoc
```
public int maxDoc()
```

deleteAll

public void deleteAll()
               throws IOException

Throws:: IOException

forceMergeDeletes

public void forceMergeDeletes(boolean doWait)
                       throws IOException

Throws:: IOException

forceMergeDeletes

public void forceMergeDeletes()
                       throws IOException

Throws:: IOException

setDoRandomForceMerge

public void setDoRandomForceMerge(boolean v)

setDoRandomForceMergeAssert

public void setDoRandomForceMergeAssert(boolean v)

getReader

public IndexReader getReader()
                      throws IOException

Throws:: IOException

getReader

public IndexReader getReader(boolean applyDeletions)
                      throws IOException

Throws:: IOException

close
```
public void close()
           throws IOException
```
Close this writer.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

See Also:

IndexWriter.close()

forceMerge
```
public void forceMerge(int maxSegmentCount)
                throws IOException
```
Forces a forceMerge.
NOTE: this should be avoided in tests unless absolutely necessary, as it will result in less test coverage.

Throws:

IOException

See Also:

IndexWriter.forceMerge(int)

Class RandomIndexWriter

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

w

Constructor Detail

RandomIndexWriter

RandomIndexWriter

RandomIndexWriter

RandomIndexWriter

Method Detail

addDocument

addDocuments

updateDocuments

updateDocument

addIndexes

addIndexes

deleteDocuments

deleteDocuments

commit

numDocs

maxDoc

deleteAll

forceMergeDeletes

forceMergeDeletes

setDoRandomForceMerge

setDoRandomForceMergeAssert

getReader

getReader

close

forceMerge