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:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable

public class RandomAccessFileReader
extends java.io.Reader

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RandomAccessFileReader.MyBufferedReader

Field Summary

Fields

Modifier and Type	Field and Description
protected java.nio.charset.Charset	charset
protected long	currentPosition
static java.util.function.Predicate<java.lang.String>	FILTER_NONE
protected static int	INDEX_HEADER_FILESIZE
protected static int	INDEX_HEADER_INDEXCREATIONCOST
protected long	lastModified
protected static int	MAX_BUFFER_FOR_LINE
protected java.io.RandomAccessFile	raf
protected java.io.Reader	reader

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
RandomAccessFileReader(java.io.File f, java.nio.charset.Charset charset)
RandomAccessFileReader(java.io.File f, java.lang.String charsetName)
RandomAccessFileReader(java.io.RandomAccessFile raf, java.nio.charset.Charset charset)
RandomAccessFileReader(java.io.RandomAccessFile raf, java.lang.String charsetName)

Method Summary

Modifier and Type	Method and Description
void	close()
long	countLines(java.util.function.Predicate<java.lang.String> filter, MutableInt maxLineLen, SimpleTaskStatus status)
long	countLines(java.util.function.Predicate<java.lang.String> filter, SimpleTaskStatus status)
RandomAccessFileIndex	createIndexOfLines(java.io.File index, boolean safe, java.util.function.Predicate<java.lang.String> filter, SimpleTaskStatus status)
RandomAccessFileIndex	createIndexOfLines(java.io.File index, boolean safe, java.util.function.Predicate<java.lang.String> filter, SimpleTaskStatus status, java.util.function.Function<java.io.BufferedReader,java.lang.Integer> numberOfLines)
RandomAccessFileIndex	createIndexOfLines(java.io.File index, java.util.function.Predicate<java.lang.String> filter, SimpleTaskStatus status)
RandomAccessFileIndex	createOrOpenIndexOfLines(java.io.File index, boolean safe, java.util.function.Predicate<java.lang.String> filter, SimpleTaskStatus status)
RandomAccessFileIndex	createOrOpenIndexOfLines(java.io.File index, boolean safe, java.util.function.Predicate<java.lang.String> filter, SimpleTaskStatus status, java.util.function.Function<java.io.BufferedReader,java.lang.Integer> numberOfLines)
RandomAccessFileIndex	createOrOpenIndexOfLines(java.io.File index, java.util.function.Predicate<java.lang.String> filter, SimpleTaskStatus status)
protected void	createReader()
java.nio.charset.Charset	getCharset()
long	getCurrentPosition()
long	getFilePointer()
long	getLastLinesIndexCreationCost(RandomAccessFileIndex index)
boolean	isRecomendedTheRecreationOfTheLinesIndex(java.io.File index)
static void	main(java.lang.String[] args)
int	read(char[] cbuf, int off, int len)
java.lang.String	readLine()
void	rewind()
void	seek(long position)

Methods inherited from class java.io.Reader

mark, markSupported, read, read, read, ready, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

FILTER_NONE

public static final java.util.function.Predicate<java.lang.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 java.io.RandomAccessFile raf

reader

protected java.io.Reader reader

currentPosition

protected long currentPosition

charset

protected final java.nio.charset.Charset charset

lastModified

protected long lastModified

Constructor Detail

RandomAccessFileReader

public RandomAccessFileReader(java.io.File f,
                              java.lang.String charsetName)
                       throws java.io.IOException

Throws:

java.io.IOException

RandomAccessFileReader

public RandomAccessFileReader(java.io.File f,
                              java.nio.charset.Charset charset)
                       throws java.io.IOException

Throws:

java.io.IOException

RandomAccessFileReader

public RandomAccessFileReader(java.io.RandomAccessFile raf,
                              java.lang.String charsetName)
                       throws java.io.IOException

Throws:

java.io.IOException

RandomAccessFileReader

public RandomAccessFileReader(java.io.RandomAccessFile raf,
                              java.nio.charset.Charset charset)
                       throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getCharset

public java.nio.charset.Charset getCharset()

read

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

Specified by:

read in class java.io.Reader

Throws:

java.io.IOException

createReader

protected void createReader()

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in class java.io.Reader

Throws:

java.io.IOException

getFilePointer

public long getFilePointer()
                    throws java.io.IOException

Throws:

java.io.IOException

getCurrentPosition

public long getCurrentPosition()

rewind

public void rewind()
            throws java.io.IOException

Throws:

java.io.IOException

seek

public void seek(long position)
          throws java.io.IOException

Throws:

java.io.IOException

readLine

public java.lang.String readLine()
                          throws java.io.IOException

Throws:

java.io.IOException

countLines

public long countLines(java.util.function.Predicate<java.lang.String> filter,
                       SimpleTaskStatus status)
                throws java.io.IOException

Throws:

java.io.IOException

countLines

public long countLines(java.util.function.Predicate<java.lang.String> filter,
                       MutableInt maxLineLen,
                       SimpleTaskStatus status)
                throws java.io.IOException

Throws:

java.io.IOException

isRecomendedTheRecreationOfTheLinesIndex

public boolean isRecomendedTheRecreationOfTheLinesIndex(java.io.File index)

createOrOpenIndexOfLines

public RandomAccessFileIndex createOrOpenIndexOfLines(java.io.File index,
                                                      java.util.function.Predicate<java.lang.String> filter,
                                                      SimpleTaskStatus status)
                                               throws java.io.IOException

Throws:

java.io.IOException

createOrOpenIndexOfLines

public RandomAccessFileIndex createOrOpenIndexOfLines(java.io.File index,
                                                      boolean safe,
                                                      java.util.function.Predicate<java.lang.String> filter,
                                                      SimpleTaskStatus status)
                                               throws java.io.IOException

Throws:

java.io.IOException

createOrOpenIndexOfLines

public RandomAccessFileIndex createOrOpenIndexOfLines(java.io.File index,
                                                      boolean safe,
                                                      java.util.function.Predicate<java.lang.String> filter,
                                                      SimpleTaskStatus status,
                                                      java.util.function.Function<java.io.BufferedReader,java.lang.Integer> numberOfLines)
                                               throws java.io.IOException

Throws:

java.io.IOException

createIndexOfLines

public RandomAccessFileIndex createIndexOfLines(java.io.File index,
                                                java.util.function.Predicate<java.lang.String> filter,
                                                SimpleTaskStatus status)
                                         throws java.io.IOException

Throws:

java.io.IOException

createIndexOfLines

public RandomAccessFileIndex createIndexOfLines(java.io.File index,
                                                boolean safe,
                                                java.util.function.Predicate<java.lang.String> filter,
                                                SimpleTaskStatus status)
                                         throws java.io.IOException

Throws:

java.io.IOException

createIndexOfLines

public RandomAccessFileIndex createIndexOfLines(java.io.File index,
                                                boolean safe,
                                                java.util.function.Predicate<java.lang.String> filter,
                                                SimpleTaskStatus status,
                                                java.util.function.Function<java.io.BufferedReader,java.lang.Integer> numberOfLines)
                                         throws java.io.IOException

Throws:

java.io.IOException

getLastLinesIndexCreationCost

public long getLastLinesIndexCreationCost(RandomAccessFileIndex index)

main

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

Throws:

java.lang.Exception