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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 .TCObjectOutputStream

TCObjectOutputStream

public class TCObjectOutputStream implements ObjectOutput,TCDataOutput(Code)

ObjectOutputStream 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 writeObject() method in this class can only handle writing Literal Objects and will throw an AssertionError for any other kind of object.

TCObjectInputStream compliments this class. Since TCDataOutput doesnt throw IOException and DataOutputStream has all final methods, I have to reimplement DataOutputStream to not throw IOException.

Field Summary
final protected OutputStream	out

Constructor Summary
public	TCObjectOutputStream(OutputStream out)

Method Summary
public void	close()
public void	flush()
public void	write(int b)
public void	write(byte[] value)
public void	write(byte[] value, int offset, int length)
public void	writeBoolean(boolean value)
public void	writeByte(int value)
public void	writeBytes(String s)
public void	writeChar(int v)
public void	writeChars(String s)
public void	writeDouble(double value)
public void	writeFloat(float value)
public void	writeInt(int v)
public void	writeLong(long v)
public void	writeObject(Object obj) This method is the reason I am writing this class.
public void	writeShort(int v)
public void	writeString(String string) This writes a 4 byte length and then the UTF String itself.
public void	writeUTF(String str) This implemetation of writeUTF differes from the DataOutputStream's implementation in the following ways.

Field Detail

out
final protected OutputStream out(Code)

Constructor Detail

TCObjectOutputStream
public TCObjectOutputStream(OutputStream out)(Code)

Method Detail

close
public void close()(Code)

flush
public void flush()(Code)

write
public void write(int b)(Code)

write
public void write(byte[] value)(Code)

write
public void write(byte[] value, int offset, int length)(Code)

writeBoolean
public void writeBoolean(boolean value)(Code)

writeByte
public void writeByte(int value)(Code)

writeBytes
public void writeBytes(String s)(Code)

writeChar
public void writeChar(int v)(Code)

writeChars
public void writeChars(String s)(Code)

writeDouble
public void writeDouble(double value)(Code)

writeFloat
public void writeFloat(float value)(Code)

writeInt
public void writeInt(int v)(Code)

writeLong
public void writeLong(long v)(Code)

writeObject
public void writeObject(Object obj)(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 writeObject() is called only for literal objects. Example : Sleepycat Serialization. See Also: LiteralValues, DNAEncoding

writeShort
public void writeShort(int v)(Code)

writeString
public void writeString(String string)(Code)
	This writes 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();

writeUTF
public void writeUTF(String str)(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) Cant be read by DataInputStream. Use TCObjectInputStream.

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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