org.teiid.internal.core.index
Class SimpleIndexInput

java.lang.Object
  org.teiid.internal.core.index.IndexInput
      org.teiid.internal.core.index.SimpleIndexInput

public class SimpleIndexInput
extends IndexInput

A simpleIndexInput is an input on an in memory Index.

Field Summary

protected IndexedFile	currentFile
protected InMemoryIndex	index
protected IndexedFile[]	sortedFiles
protected WordEntry[]	sortedWordEntries

Fields inherited from class org.teiid.internal.core.index.IndexInput

currentWordEntry, filePosition, wordPosition

Constructor Summary

SimpleIndexInput(InMemoryIndex index)

Method Summary

void	clearCache() clears the cache of this indexInput, if it keeps track of the information already read.
void	close() Closes the IndexInput.
IndexedFile	getCurrentFile() Returns the current file the indexInput is pointing to in the index.
IndexedFile	getIndexedFile(IDocument document) Returns the indexedFile corresponding to the given document in the index the input reads in (e.g.
IndexedFile	getIndexedFile(int fileNum) Returns the indexedFile corresponding to the given document number in the index the input reads in, or null if such indexedFile does not exist.
int	getNumFiles() Returns the number of files in the index.
int	getNumWords() Returns the number of unique words in the index.
java.lang.Object	getSource() Returns the Object the input is reading from.
void	init()
void	moveToNextFile() Moves the pointer on the current file to the next file in the index.
void	moveToNextWordEntry() Moves the pointer on the current word to the next file in the index.
void	open() Open the Source where the input gets the information from.
IEntryResult[]	queryEntriesPrefixedBy(char[] prefix) Returns the list of the files containing the given word in the index.
IQueryResult[]	queryFilesReferringToPrefix(char[] prefix)
IQueryResult[]	queryInDocumentNames(java.lang.String word) Returns the list of the files whose name contain the given word in the index.
protected void	setFirstFile() Set the pointer on the current file to the first file of the index.
protected void	setFirstWord() Set the pointer on the current word to the first word of the index.

Methods inherited from class org.teiid.internal.core.index.IndexInput

getCurrentWordEntry, getFilePosition, hasMoreFiles, hasMoreWords, isOpen, setOpen

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

sortedWordEntries

protected WordEntry[] sortedWordEntries

currentFile

protected IndexedFile currentFile

sortedFiles

protected IndexedFile[] sortedFiles

index

protected InMemoryIndex index

Constructor Detail

SimpleIndexInput

public SimpleIndexInput(InMemoryIndex index)

Method Detail

clearCache

public void clearCache()

Description copied from class: IndexInput

clears the cache of this indexInput, if it keeps track of the information already read.

Specified by:

clearCache in class IndexInput

See Also:

IndexInput.clearCache()

close

public void close()
           throws java.io.IOException

Description copied from class: IndexInput

Closes the IndexInput. For example, if the input is on a RandomAccessFile, it calls the close() method of RandomAccessFile.

Specified by:

close in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.close()

getCurrentFile

public IndexedFile getCurrentFile()
                           throws java.io.IOException

Description copied from class: IndexInput

Returns the current file the indexInput is pointing to in the index.

Specified by:

getCurrentFile in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.getCurrentFile()

getIndexedFile

public IndexedFile getIndexedFile(int fileNum)
                           throws java.io.IOException

Description copied from class: IndexInput

Returns the indexedFile corresponding to the given document number in the index the input reads in, or null if such indexedFile does not exist.

Specified by:

getIndexedFile in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.getIndexedFile(int)

getIndexedFile

public IndexedFile getIndexedFile(IDocument document)
                           throws java.io.IOException

Description copied from class: IndexInput

Returns the indexedFile corresponding to the given document in the index the input reads in (e.g. the indexedFile with the same path in this index), or null if such indexedFile does not exist.

Specified by:

getIndexedFile in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.getIndexedFile(IDocument)

getNumFiles

public int getNumFiles()

Description copied from class: IndexInput

Returns the number of files in the index.

Specified by:

getNumFiles in class IndexInput

See Also:

IndexInput.getNumFiles()

getNumWords

public int getNumWords()

Description copied from class: IndexInput

Returns the number of unique words in the index.

Specified by:

getNumWords in class IndexInput

See Also:

IndexInput.getNumWords()

getSource

public java.lang.Object getSource()

Description copied from class: IndexInput

Returns the Object the input is reading from. It can be an IIndex, a File, ...

Specified by:

getSource in class IndexInput

See Also:

IndexInput.getSource()

init

public void init()

moveToNextFile

public void moveToNextFile()
                    throws java.io.IOException

Description copied from class: IndexInput

Moves the pointer on the current file to the next file in the index.

Specified by:

moveToNextFile in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.moveToNextFile()

moveToNextWordEntry

public void moveToNextWordEntry()
                         throws java.io.IOException

Description copied from class: IndexInput

Moves the pointer on the current word to the next file in the index.

Specified by:

moveToNextWordEntry in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.moveToNextWordEntry()

open

public void open()
          throws java.io.IOException

Description copied from class: IndexInput

Open the Source where the input gets the information from.

Specified by:

open in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.open()

queryEntriesPrefixedBy

public IEntryResult[] queryEntriesPrefixedBy(char[] prefix)
                                      throws java.io.IOException

Description copied from class: IndexInput

Returns the list of the files containing the given word in the index.

Specified by:

queryEntriesPrefixedBy in class IndexInput

Throws:

java.io.IOException

queryFilesReferringToPrefix

public IQueryResult[] queryFilesReferringToPrefix(char[] prefix)
                                           throws java.io.IOException

Specified by:

queryFilesReferringToPrefix in class IndexInput

Throws:

java.io.IOException

queryInDocumentNames

public IQueryResult[] queryInDocumentNames(java.lang.String word)
                                    throws java.io.IOException

Description copied from class: IndexInput

Returns the list of the files whose name contain the given word in the index.

Specified by:

queryInDocumentNames in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.queryInDocumentNames(String)

setFirstFile

protected void setFirstFile()
                     throws java.io.IOException

Description copied from class: IndexInput

Set the pointer on the current file to the first file of the index.

Specified by:

setFirstFile in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.setFirstFile()

setFirstWord

protected void setFirstWord()
                     throws java.io.IOException

Description copied from class: IndexInput

Set the pointer on the current word to the first word of the index.

Specified by:

setFirstWord in class IndexInput

Throws:

java.io.IOException

See Also:

IndexInput.setFirstWord()