AutoResetObjectOutputStream (JBoss/Common API) - JBoss 3.2.7 common API Documentation 英文版文档

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org.jboss.util.stream
Class AutoResetObjectOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.ObjectOutputStream
          org.jboss.util.stream.ObjectOutputStreamAdapter
              org.jboss.util.stream.AutoResetObjectOutputStream

All Implemented Interfaces:: DataOutput, ObjectOutput, ObjectStreamConstants

public class AutoResetObjectOutputStream
extends ObjectOutputStreamAdapter

An ObjectOutputStream that will auto reset after n objects have been written to the underlying stream.

Concurrency

This class is not synchronized.

Version:: $Revision: 1.1 $
Author:: Jason Dillon

Nested Class Summary

Nested classes inherited from class java.io.ObjectOutputStream

ObjectOutputStream.PutField

Field Summary

protected int after
          Number of objects to write before resetting.

protected int count
          Number of objects written so far.

Fields inherited from class org.jboss.util.stream.ObjectOutputStreamAdapter

out

Fields inherited from interface java.io.ObjectStreamConstants

baseWireHandle, PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, SC_BLOCK_DATA, SC_EXTERNALIZABLE, SC_SERIALIZABLE, SC_WRITE_METHOD, STREAM_MAGIC, STREAM_VERSION, SUBCLASS_IMPLEMENTATION_PERMISSION, SUBSTITUTION_PERMISSION, TC_ARRAY, TC_BASE, TC_BLOCKDATA, TC_BLOCKDATALONG, TC_CLASS, TC_CLASSDESC, TC_ENDBLOCKDATA, TC_EXCEPTION, TC_LONGSTRING, TC_MAX, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING

Constructor Summary

AutoResetObjectOutputStream(ObjectOutputStream out, int after)
          Construct a new AutoResetObjectOutputStream.

Method Summary

int getCount()
          Get the number of objects written to the stream so far.

int getResetAfter()
          Get the number of objects that must be written before resetting the stream.

void reset()
          Resets the object counter as well as the nested stream.

void setResetAfter(int after)
          Set the number of objects that must be written before resetting the stream.

protected void writeObjectOverride(Object obj)
          Write the given object and reset if the number of objects written (including this one) exceeds the after count.

Methods inherited from class org.jboss.util.stream.ObjectOutputStreamAdapter

close, defaultWriteObject, flush, putFields, useProtocolVersion, write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFields, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.io.ObjectOutputStream

annotateClass, annotateProxyClass, drain, enableReplaceObject, replaceObject, writeClassDescriptor, writeObject, writeStreamHeader, writeUnshared

Methods inherited from class java.lang.Object

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

Field Detail

after

protected int after

Number of objects to write before resetting.

count

protected int count

Number of objects written so far.

Constructor Detail

AutoResetObjectOutputStream

public AutoResetObjectOutputStream(ObjectOutputStream out,
                                   int after)
                            throws IOException

Construct a new AutoResetObjectOutputStream.
Parameters:: out - An ObjectOutputStream stream.; after - Number of objects to write before resetting.
Throws:: IllegalArgumentException - After <= 0; IOException - Any exception thrown by the underlying OutputStream.

Method Detail

setResetAfter

public void setResetAfter(int after)

Set the number of objects that must be written before resetting the stream.

Parameters:: after - Number of objects to write before resetting.
Throws:: IllegalArgumentException - After <= 0

getResetAfter

public final int getResetAfter()

Get the number of objects that must be written before resetting the stream.

Returns:: Number of objects to write before resetting.

getCount

public final int getCount()

Get the number of objects written to the stream so far.

Returns:: The number of objects written to the stream so far.

writeObjectOverride

protected void writeObjectOverride(Object obj)
                            throws IOException

Write the given object and reset if the number of objects written (including this one) exceeds the after count.

Overrides:: writeObjectOverride in class ObjectOutputStreamAdapter

Parameters:: obj - Object to write.
Throws:: IOException - Any exception thrown by the underlying stream.

reset

public void reset()
           throws IOException

Resets the object counter as well as the nested stream.

Overrides:: reset in class ObjectOutputStreamAdapter

Throws:: IOException