Package org.gvsig.fmap.dal.store.simplereader.virtualrows

Class RandomAccessFileReader

java.lang.Object

java.io.Reader

org.gvsig.fmap.dal.store.simplereader.virtualrows.RandomAccessFileReader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class RandomAccessFileReader
extends Reader

Author:

gvSIG Team

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RandomAccessFileReader.MyBufferedReader

Field Summary

Fields

Modifier and Type	Field	Description
protected final Charset	charset
protected long	currentPosition
static final Predicate<String>	FILTER_NONE
protected static final int	INDEX_HEADER_FILESIZE
protected static final int	INDEX_HEADER_INDEXCREATIONCOST
protected long	lastModified
protected static final int	MAX_BUFFER_FOR_LINE
protected RandomAccessFile	raf
protected Reader	reader

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor	Description
RandomAccessFileReader(File f, String charsetName)
RandomAccessFileReader(File f, Charset charset)
RandomAccessFileReader(RandomAccessFile raf, String charsetName)
RandomAccessFileReader(RandomAccessFile raf, Charset charset)

Method Summary

Modifier and Type	Method	Description
void	close()
long	countLines(Predicate<String> filter, org.apache.commons.lang3.mutable.MutableInt maxLineLen, org.gvsig.tools.task.SimpleTaskStatus status)
long	countLines(Predicate<String> filter, org.gvsig.tools.task.SimpleTaskStatus status)
RandomAccessFileIndex	createIndexOfLines(File index, boolean safe, Predicate<String> filter, org.gvsig.tools.task.SimpleTaskStatus status)
RandomAccessFileIndex	createIndexOfLines(File index, boolean safe, Predicate<String> filter, org.gvsig.tools.task.SimpleTaskStatus status, Function<BufferedReader,Integer> numberOfLines)
RandomAccessFileIndex	createIndexOfLines(File index, Predicate<String> filter, org.gvsig.tools.task.SimpleTaskStatus status)
RandomAccessFileIndex	createOrOpenIndexOfLines(File index, boolean safe, Predicate<String> filter, org.gvsig.tools.task.SimpleTaskStatus status)
RandomAccessFileIndex	createOrOpenIndexOfLines(File index, boolean safe, Predicate<String> filter, org.gvsig.tools.task.SimpleTaskStatus status, Function<BufferedReader,Integer> numberOfLines)
RandomAccessFileIndex	createOrOpenIndexOfLines(File index, Predicate<String> filter, org.gvsig.tools.task.SimpleTaskStatus status)
protected void	createReader()
Charset	getCharset()
long	getCurrentPosition()
long	getFilePointer()
long	getLastLinesIndexCreationCost(RandomAccessFileIndex index)
boolean	isRecomendedTheRecreationOfTheLinesIndex(File index)
static void	main(String[] args)
int	read(char[] cbuf, int off, int len)
String	readLine()
void	rewind()
void	seek(long position)

Methods inherited from class java.io.Reader

mark, markSupported, nullReader, read, read, read, ready, reset, skip, transferTo

Methods inherited from class java.lang.Object

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

Field Details

FILTER_NONE

public static final Predicate<String> FILTER_NONE

INDEX_HEADER_FILESIZE

protected static final int INDEX_HEADER_FILESIZE

See Also:

• Constant Field Values

INDEX_HEADER_INDEXCREATIONCOST

protected static final int INDEX_HEADER_INDEXCREATIONCOST

See Also:

• Constant Field Values

MAX_BUFFER_FOR_LINE

protected static final int MAX_BUFFER_FOR_LINE

See Also:

• Constant Field Values

raf

protected RandomAccessFile raf

reader

protected Reader reader

currentPosition

protected long currentPosition

charset

protected final Charset charset

lastModified

protected long lastModified

Constructor Details

RandomAccessFileReader

public RandomAccessFileReader(File f,
 String charsetName)
                       throws IOException

Throws:

IOException

RandomAccessFileReader

public RandomAccessFileReader(File f,
 Charset charset)
                       throws IOException

Throws:

IOException

RandomAccessFileReader

public RandomAccessFileReader(RandomAccessFile raf,
 String charsetName)
                       throws IOException

Throws:

IOException

RandomAccessFileReader

public RandomAccessFileReader(RandomAccessFile raf,
 Charset charset)
                       throws IOException

Throws:

IOException

Method Details

getCharset

public Charset getCharset()

read

public int read(char[] cbuf,
 int off,
 int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

createReader

protected void createReader()

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException

getFilePointer

public long getFilePointer()
                    throws IOException

Throws:

IOException

getCurrentPosition

public long getCurrentPosition()

rewind

public void rewind()
            throws IOException

Throws:

IOException

seek

public void seek(long position)
          throws IOException

Throws:

IOException

readLine

public String readLine()
                throws IOException

Throws:

IOException

countLines

public long countLines(Predicate<String> filter,
 org.gvsig.tools.task.SimpleTaskStatus status)
                throws IOException

Throws:

IOException

countLines

public long countLines(Predicate<String> filter,
 org.apache.commons.lang3.mutable.MutableInt maxLineLen,
 org.gvsig.tools.task.SimpleTaskStatus status)
                throws IOException

Throws:

IOException

isRecomendedTheRecreationOfTheLinesIndex

public boolean isRecomendedTheRecreationOfTheLinesIndex(File index)

createOrOpenIndexOfLines

public RandomAccessFileIndex createOrOpenIndexOfLines(File index,
 Predicate<String> filter,
 org.gvsig.tools.task.SimpleTaskStatus status)
                                               throws IOException

Throws:

IOException

createOrOpenIndexOfLines

public RandomAccessFileIndex createOrOpenIndexOfLines(File index,
 boolean safe,
 Predicate<String> filter,
 org.gvsig.tools.task.SimpleTaskStatus status)
                                               throws IOException

Throws:

IOException

createOrOpenIndexOfLines

public RandomAccessFileIndex createOrOpenIndexOfLines(File index,
 boolean safe,
 Predicate<String> filter,
 org.gvsig.tools.task.SimpleTaskStatus status,
 Function<BufferedReader,Integer> numberOfLines)
                                               throws IOException

Throws:

IOException

createIndexOfLines

public RandomAccessFileIndex createIndexOfLines(File index,
 Predicate<String> filter,
 org.gvsig.tools.task.SimpleTaskStatus status)
                                         throws IOException

Throws:

IOException

createIndexOfLines

public RandomAccessFileIndex createIndexOfLines(File index,
 boolean safe,
 Predicate<String> filter,
 org.gvsig.tools.task.SimpleTaskStatus status)
                                         throws IOException

Throws:

IOException

createIndexOfLines

public RandomAccessFileIndex createIndexOfLines(File index,
 boolean safe,
 Predicate<String> filter,
 org.gvsig.tools.task.SimpleTaskStatus status,
 Function<BufferedReader,Integer> numberOfLines)
                                         throws IOException

Throws:

IOException

getLastLinesIndexCreationCost

public long getLastLinesIndexCreationCost(RandomAccessFileIndex index)

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception