org.netbeans.editor.ext

Interface DataAccessor

All Known Implementing Classes:

FileAccessor

public interface DataAccessor

DataAccessor for Code Completion DB files

Method Summary

Modifier and Type	Method and Description
void	append(byte[] buffer, int off, int len) Appends exactly len bytes, starting at off of the buffer pointer to the end of file resource.
void	close() Closes DataAccessor file resource
int	getFileLength()
long	getFilePointer() Returns the current offset in this file.
void	open(boolean requestWrite) Opens DataAccessor file resource
void	read(byte[] buffer, int off, int len) Reads up to len bytes of data from this file resource into an array of bytes.
void	resetFile() Clears the file and sets the offset to 0
void	seek(long pos) Sets the file-pointer offset, measured from the beginning of this file, at which the next read or write occurs.

Method Detail

open

void open(boolean requestWrite)
   throws IOException

Opens DataAccessor file resource

Parameters:

requestWrite - if true, file is opened for read/write operation.

Throws:

IOException

close

void close()
    throws IOException

Closes DataAccessor file resource

Throws:

IOException

read

void read(byte[] buffer,
          int off,
          int len)
   throws IOException

Reads up to len bytes of data from this file resource into an array of bytes.

Parameters:

buffer - the buffer into which the data is read.

off - the start offset of the data.

len - the maximum number of bytes read.

Throws:

IOException

append

void append(byte[] buffer,
            int off,
            int len)
     throws IOException

Appends exactly len bytes, starting at off of the buffer pointer to the end of file resource.

Parameters:

buffer - the buffer from which the data is appended.

off - the start offset of the data in the buffer.

len - the number of bytes to append.

Throws:

IOException

getFilePointer

long getFilePointer()
             throws IOException

Returns the current offset in this file.

Returns:

the offset from the beginning of the file, in bytes, at which the next read or write occurs.

Throws:

IOException

resetFile

void resetFile()
        throws IOException

Clears the file and sets the offset to 0

Throws:

IOException

seek

void seek(long pos)
   throws IOException

Sets the file-pointer offset, measured from the beginning of this file, at which the next read or write occurs.

Throws:

IOException

getFileLength

int getFileLength()