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Java Source Code / Java Documentation » Net » Terracotta » com.tc.io.serializer

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

com.tc.io.serializer .TCObjectInputStream

TCObjectInputStream

public class TCObjectInputStream implements ObjectInput,TCDataInput(Code)

ObjectOutputStream/ObjectInputStream is totally inefficient when writing just a small amount of data. It creates a lot of garbage (2 or 3 KB to just a create it) plus it also writes all the header/block header into the stream.

In the server when we serialize the ManagedObjects to sleepycat, we really dont need all the fancy things and we cant afford to create such overhead. This class is an attempt to solve these problems without getting too complicated.

The readObject() method in this class can only handle reading Literal Objects and will throw an AssertionError for any other kind of object.

TCObjectOutputStream compliments this class. Since methods DataInputStream are final methods and I want a different write/readUTF() implementation, I have to reimplement DataInputStream.

Constructor Summary
public	TCObjectInputStream(InputStream in)

Method Summary
public int	available()
public void	close()
public int	read()
public int	read(byte[] b)
public int	read(byte[] b, int off, int len)
public boolean	readBoolean()
public byte	readByte()
public char	readChar()
public double	readDouble()
public float	readFloat()
public void	readFully(byte[] b)
public void	readFully(byte[] b, int off, int len)
public int	readInt()
public String	readLine()
public long	readLong()
public Object	readObject() This method is the reason I am writing this class.
public short	readShort()
public String	readString() This reads a 4 byte length and then the UTF String itself.
public String	readUTF() This implemetation of writeUTF differes from the DataOutputStream's implementation in the following ways.
public int	readUnsignedByte()
public int	readUnsignedShort()
public long	skip(long n)
public int	skipBytes(int n)

Constructor Detail

TCObjectInputStream
public TCObjectInputStream(InputStream in)(Code)

Method Detail

available
public int available() throws IOException(Code)

close
public void close() throws IOException(Code)

read
public int read() throws IOException(Code)

read
public int read(byte[] b) throws IOException(Code)

read
public int read(byte[] b, int off, int len) throws IOException(Code)

readBoolean
public boolean readBoolean() throws IOException(Code)

readByte
public byte readByte() throws IOException(Code)

readChar
public char readChar() throws IOException(Code)

readDouble
public double readDouble() throws IOException(Code)

readFloat
public float readFloat() throws IOException(Code)

readFully
public void readFully(byte[] b) throws IOException(Code)

readFully
public void readFully(byte[] b, int off, int len) throws IOException(Code)

readInt
public int readInt() throws IOException(Code)

readLine
public String readLine()(Code)

readLong
public long readLong() throws IOException(Code)

readObject
public Object readObject() throws ClassNotFoundException, IOException(Code)
	This method is the reason I am writing this class. This implementation only can handle Literal Objects and is designed to be used where readObject() is called only for literal objects. Example : Sleepycat Serialization. See Also: LiteralValues, DNAEncoding

readShort
public short readShort() throws IOException(Code)

readString
public String readString() throws IOException(Code)
	This reads a 4 byte length and then the UTF String itself. If the length is negative, then it is a null string. throws: IOException - See Also: writeUTF();

readUTF
public String readUTF() throws IOException(Code)
	This implemetation of writeUTF differes from the DataOutputStream's implementation in the following ways. 1) It handles null strings. 2) It handles long strings (no 65K limit that UTF Encoding poses) 3) Data should have been written by TCObjectOutputStream.

readUnsignedByte
public int readUnsignedByte() throws IOException(Code)

readUnsignedShort
public int readUnsignedShort() throws IOException(Code)

skip
public long skip(long n) throws IOException(Code)

skipBytes
public int skipBytes(int n) throws IOException(Code)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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