org.teiid.internal.core.index
Class InMemoryIndex

java.lang.Object
  org.teiid.internal.core.index.InMemoryIndex

public class InMemoryIndex
extends Object

This index stores the document names in an ArrayList, and the words in an HashtableOfObjects.

Field Summary

protected IndexedFileHashedArray	files List of IndexedFiles = file name + a unique number.
protected long	footprint Size of the index.
protected List<WordEntry>	words hashtable of WordEntrys = words+numbers of the files they appear in.

Constructor Summary

InMemoryIndex()

Method Summary

IndexedFile	addDocument(IDocument document)
protected void	addRef(char[] word, int fileNum) Looks if the word already exists in the index and add the fileNum to this word.
void	addRef(IndexedFile indexedFile, char[] word)
long	getFootprint() Returns the footprint of the index.
IndexedFile	getIndexedFile(String path) Returns the indexed file with the given path, or null if such file does not exist.
int	getNumFiles()
int	getNumWords()
protected IndexedFile[]	getSortedFiles() Returns the words contained in the hashtable of words, sorted by alphabetical order.
protected WordEntry[]	getSortedWordEntries() Returns the word entries contained in the hashtable of words, sorted by alphabetical order.
void	init() Initialises the fields of the index
protected void	save(IndexOutput output) Saves the index in the given IndexOutput.
void	save(org.jboss.virtual.VirtualFile file) Saves the index in the given file.

Methods inherited from class java.lang.Object

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

Field Detail

words

protected List<WordEntry> words

hashtable of WordEntrys = words+numbers of the files they appear in.

files

protected IndexedFileHashedArray files

List of IndexedFiles = file name + a unique number.

footprint

protected long footprint

Size of the index.

Constructor Detail

InMemoryIndex

public InMemoryIndex()

Method Detail

addDocument

public IndexedFile addDocument(IDocument document)

addRef

protected void addRef(char[] word,
                      int fileNum)

Looks if the word already exists in the index and add the fileNum to this word. If the word does not exist, it adds it in the index.

addRef

public void addRef(IndexedFile indexedFile,
                   char[] word)

getFootprint

public long getFootprint()

Returns the footprint of the index.

getIndexedFile

public IndexedFile getIndexedFile(String path)

Returns the indexed file with the given path, or null if such file does not exist.

getNumFiles

public int getNumFiles()

See Also:

IIndex.getNumDocuments()

getNumWords

public int getNumWords()

See Also:

IIndex.getNumWords()

getSortedFiles

protected IndexedFile[] getSortedFiles()

Returns the words contained in the hashtable of words, sorted by alphabetical order.

getSortedWordEntries

protected WordEntry[] getSortedWordEntries()

Returns the word entries contained in the hashtable of words, sorted by alphabetical order.

init

public void init()

Initialises the fields of the index

save

public void save(org.jboss.virtual.VirtualFile file)
          throws IOException

Saves the index in the given file. Structure of the saved Index : - IndexedFiles in sorted order. + example: "c:/com/Test.java 1" "c:/com/UI.java 2" - References with the words in sorted order + example: "classDecl/Test 1" "classDecl/UI 2" "ref/String 1 2"

Throws:

IOException

save

protected void save(IndexOutput output)
             throws IOException

Saves the index in the given IndexOutput. Structure of the saved Index : - IndexedFiles in sorted order. + example: "c:/com/Test.java 1" "c:/com/UI.java 2" - References with the words in sorted order + example: "classDecl/Test 1" "classDecl/UI 2" "ref/String 1 2"

Throws:

IOException