hep.io.root.core
Class RootRandomAccessFile

java.lang.Object
  java.io.RandomAccessFile
      hep.io.root.core.RootRandomAccessFile

All Implemented Interfaces:

DataInput, DataOutput, RootInput

public class RootRandomAccessFile

extends RandomAccessFile

implements RootInput

Version:

$Id

Author:

Tony Johnson (tonyj@slac.stanford.edu)

Source Code:

RootRandomAccessFile.java

Constructor Summary

RootRandomAccessFile(File file, RootFileReader reader)

Method Summary

void	checkLength(AbstractRootObject obj)
void	clearMap()
void	dump() For debugging
RootClassFactory	getFactory()
long	getPosition()
int	getRootVersion() Returns the Root version which wrote this file
RootInput	getTop() Returns the RootInput at the top of top of the heirarchy of slices
int	readArray(byte[] data)
int	readArray(double[] data)
int	readArray(float[] data)
int	readArray(int[] data)
int	readArray(short[] data)
void	readFixedArray(byte[] data)
void	readFixedArray(double[] data)
void	readFixedArray(float[] data)
void	readFixedArray(int[] data)
void	readFixedArray(long[] data)
void	readFixedArray(short[] data)
void	readMultiArray(Object[] array)
String	readNullTerminatedString(int maxLength)
RootObject	readObject(String type)
RootObject	readObjectRef()
String	readString()
double	readTwistedDouble() Reads a double in strange byte order?
int	readVersion()
int	readVersion(AbstractRootObject obj)
void	setMap(int keylen)
void	setPosition(long pos)
void	skipObject() For skipping uninterpretable objects
RootInput	slice(int size) Returns a new RootInput stream which represents a slice of this RootInput stream.
RootInput	slice(int inSize, int outSize) Slice and decompress

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

Methods inherited from interface hep.io.root.core.RootInput

close

Methods inherited from interface java.io.DataInput

readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, skipBytes

Constructor Detail

RootRandomAccessFile

public RootRandomAccessFile(File file,
                            RootFileReader reader)
                     throws IOException

Method Detail

getFactory

public RootClassFactory getFactory()

Specified by:

getFactory in interface RootInput

Returns:

The RootClassFactory associated with this stream

setMap

public void setMap(int keylen)
            throws IOException

Specified by:

setMap in interface RootInput

Throws:

IOException

setPosition

public void setPosition(long pos)
                 throws IOException

Specified by:

setPosition in interface RootInput

Throws:

IOException

getPosition

public long getPosition()
                 throws IOException

Specified by:

getPosition in interface RootInput

Throws:

IOException

getRootVersion

public int getRootVersion()

Description copied from interface: RootInput

Returns the Root version which wrote this file

Specified by:

getRootVersion in interface RootInput

getTop

public RootInput getTop()

Description copied from interface: RootInput

Returns the RootInput at the top of top of the heirarchy of slices

Specified by:

getTop in interface RootInput

checkLength

public void checkLength(AbstractRootObject obj)
                 throws IOException

Specified by:

checkLength in interface RootInput

Throws:

IOException

clearMap

public void clearMap()

Specified by:

clearMap in interface RootInput

readArray

public int readArray(int[] data)
              throws IOException

Specified by:

readArray in interface RootInput

Throws:

IOException

readArray

public int readArray(byte[] data)
              throws IOException

Specified by:

readArray in interface RootInput

Throws:

IOException

readArray

public int readArray(short[] data)
              throws IOException

Specified by:

readArray in interface RootInput

Throws:

IOException

readArray

public int readArray(float[] data)
              throws IOException

Specified by:

readArray in interface RootInput

Throws:

IOException

readArray

public int readArray(double[] data)
              throws IOException

Specified by:

readArray in interface RootInput

Throws:

IOException

readFixedArray

public void readFixedArray(int[] data)
                    throws IOException

Specified by:

readFixedArray in interface RootInput

Throws:

IOException

readFixedArray

public void readFixedArray(long[] data)
                    throws IOException

Specified by:

readFixedArray in interface RootInput

Throws:

IOException

readFixedArray

public void readFixedArray(byte[] data)
                    throws IOException

Specified by:

readFixedArray in interface RootInput

Throws:

IOException

readFixedArray

public void readFixedArray(short[] data)
                    throws IOException

Specified by:

readFixedArray in interface RootInput

Throws:

IOException

readFixedArray

public void readFixedArray(float[] data)
                    throws IOException

Specified by:

readFixedArray in interface RootInput

Throws:

IOException

readFixedArray

public void readFixedArray(double[] data)
                    throws IOException

Specified by:

readFixedArray in interface RootInput

Throws:

IOException

readMultiArray

public void readMultiArray(Object[] array)
                    throws IOException

Specified by:

readMultiArray in interface RootInput

Throws:

IOException

readNullTerminatedString

public String readNullTerminatedString(int maxLength)
                                throws IOException

Specified by:

readNullTerminatedString in interface RootInput

Throws:

IOException

readObject

public RootObject readObject(String type)
                      throws IOException

Specified by:

readObject in interface RootInput

Throws:

IOException

readObjectRef

public RootObject readObjectRef()
                         throws IOException

Specified by:

readObjectRef in interface RootInput

Throws:

IOException

readString

public String readString()
                  throws IOException

Specified by:

readString in interface RootInput

Throws:

IOException

readVersion

public int readVersion()
                throws IOException

Specified by:

readVersion in interface RootInput

Throws:

IOException

readVersion

public int readVersion(AbstractRootObject obj)
                throws IOException

Specified by:

readVersion in interface RootInput

Throws:

IOException

slice

public RootInput slice(int size)
                throws IOException

Description copied from interface: RootInput

Returns a new RootInput stream which represents a slice of this RootInput stream. The new RootInput maintains its own file position independent of the parent stream. The slice starts from the current file position and extends for size bytes.

Specified by:

slice in interface RootInput

Parameters:

size - The size of the slice.

Returns:

The slice

Throws:

IOException

slice

public RootInput slice(int inSize,
                       int outSize)
                throws IOException

Description copied from interface: RootInput

Slice and decompress

Specified by:

slice in interface RootInput

Throws:

IOException

readTwistedDouble

public double readTwistedDouble()
                         throws IOException

Description copied from interface: RootInput

Reads a double in strange byte order?

Specified by:

readTwistedDouble in interface RootInput

Throws:

IOException

dump

public void dump()
          throws IOException

Description copied from interface: RootInput

For debugging

Specified by:

dump in interface RootInput

Throws:

IOException

skipObject

public void skipObject()
                throws IOException

Description copied from interface: RootInput

For skipping uninterpretable objects

Specified by:

skipObject in interface RootInput

Throws:

IOException