Package com.aoindustries.io

Class FixedRecordFile

java.lang.Object

java.io.RandomAccessFile

com.aoindustries.io.FixedRecordFile

All Implemented Interfaces:

Closeable, DataInput, DataOutput, AutoCloseable

public class FixedRecordFile
extends RandomAccessFile

A way to more easily manipulate files with fixed-record-size rows.

Author:

AO Industries, Inc.

Constructor Summary

Constructors

Constructor	Description
FixedRecordFile(File file, String mode, int recordLength)
FixedRecordFile(String name, String mode, int recordLength)

Method Summary

Modifier and Type	Method	Description
void	addRecord(int index)
void	addRecords(int index, int numRecords)
static void	copyBytes(RandomAccessFile from, long fromIndex, RandomAccessFile to, long toIndex, long numBytes)
static void	copyRecords(FixedRecordFile from, long fromIndex, FixedRecordFile to, long toIndex, long numRecords)
int	getRecordCount()
int	getRecordLength()
void	removeAllRecords()
void	removeRecord(int index)
void	seekToExistingRecord(int index)
void	swap(int index1, int index2)

Methods inherited from class java.io.RandomAccessFile

close, getChannel, getFD, getFilePointer, length, read, read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, seek, setLength, skipBytes, write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedRecordFile

public FixedRecordFile(String name,
                       String mode,
                       int recordLength)
                throws FileNotFoundException

Throws:

FileNotFoundException

FixedRecordFile

public FixedRecordFile(File file,
                       String mode,
                       int recordLength)
                throws FileNotFoundException

Throws:

FileNotFoundException

Method Detail

seekToExistingRecord

public void seekToExistingRecord(int index)
                          throws IndexOutOfBoundsException,
                                 IOException

Throws:

IndexOutOfBoundsException

IOException

addRecord

public void addRecord(int index)
               throws IndexOutOfBoundsException,
                      IOException

Throws:

IndexOutOfBoundsException

IOException

addRecords

public void addRecords(int index,
                       int numRecords)
                throws IndexOutOfBoundsException,
                       IOException

Throws:

IndexOutOfBoundsException

IOException

getRecordCount

public int getRecordCount()
                   throws IOException

Throws:

IOException

copyBytes

public static void copyBytes(RandomAccessFile from,
                             long fromIndex,
                             RandomAccessFile to,
                             long toIndex,
                             long numBytes)
                      throws IOException

Throws:

IOException

copyRecords

public static void copyRecords(FixedRecordFile from,
                               long fromIndex,
                               FixedRecordFile to,
                               long toIndex,
                               long numRecords)
                        throws IOException

Throws:

IOException

removeAllRecords

public void removeAllRecords()
                      throws IOException

Throws:

IOException

removeRecord

public void removeRecord(int index)
                  throws IOException

Throws:

IOException

getRecordLength

public int getRecordLength()

swap

public void swap(int index1,
                 int index2)
          throws IOException

Throws:

IOException