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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: AS400NoThreadServer.java
//
// The source code contained herein is licensed under the IBM Public License
// Version 1.0, which has been approved by the Open Source Initiative.
// Copyright (C) 1997-2001 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.access;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.SocketException;
import java.util.Hashtable;
import java.util.Vector;
class AS400NoThreadServer extends AS400Server
{
static final String copyright = "Copyright (C) 1997-2001 International Business Machines Corporation and others.";
private AS400ImplRemote system_;
private int service_;
private String jobString_;
private SocketContainer socket_;
private InputStream inStream_;
private OutputStream outStream_;
private Hashtable replyStreams_;
private Hashtable instanceReplyStreams_ = new Hashtable();
private DataStream exchangeAttrReply_ = null;
private Vector replyList_ = new Vector(5);
private Vector discardList_ = new Vector();
private int lastCorrelationId_ = 0;
private class CorrelationIdLock extends Object {} //@C7A
private CorrelationIdLock correlationIdLock_ = new CorrelationIdLock(); //@C7C
private boolean closed_ = false;
AS400NoThreadServer(AS400ImplRemote system, int service, SocketContainer socket, String jobString) throws IOException
{
system_ = system;
service_ = service;
jobString_ = jobString;
socket_ = socket;
connectionID_ = socket_.hashCode();
inStream_ = socket.getInputStream();
outStream_ = socket.getOutputStream();
replyStreams_ = AS400Server.replyStreamsHashTables[service];
}
int getService()
{
return service_;
}
String getJobString()
{
return jobString_;
}
void setJobString(String jobString)
{
jobString_ = jobString;
}
boolean isConnected()
{
return closed_ == false;
}
public DataStream getExchangeAttrReply()
{
return exchangeAttrReply_;
}
public synchronized DataStream sendExchangeAttrRequest(DataStream req) throws IOException
{
if (exchangeAttrReply_ == null)
{
exchangeAttrReply_ = sendAndReceive(req);
}
return exchangeAttrReply_;
}
void addInstanceReplyStream(DataStream replyStream)
{
instanceReplyStreams_.put(replyStream, replyStream);
}
void clearInstanceReplyStreams()
{
instanceReplyStreams_.clear();
}
public DataStream sendAndReceive(DataStream requestStream) throws IOException
{
if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "send and receive(): ..."); //@pdc
int correlationID = send(requestStream);
return receive(correlationID);
}
void sendAndDiscardReply(DataStream requestStream) throws IOException
{
if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "send and discard(): ..."); //@pdc
int correlationID = send(requestStream);
discardList_.addElement(new Integer(correlationID));
}
//@M8a
final void sendAndDiscardReply(DataStream requestStream,int correlationID) throws IOException
{
if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "send and discard(): ...");
send(requestStream,correlationID);
discardList_.addElement(new Integer(correlationID));
}
int send(DataStream requestStream) throws IOException
{
if (Trace.traceOn_) {
Trace.log(Trace.DIAGNOSTIC, "send(): send request..."); //@pdc
requestStream.setConnectionID(connectionID_);
}
int correlationID = newCorrelationId();
requestStream.setCorrelation(correlationID);
requestStream.write(outStream_);
return correlationID;
}
int newCorrelationId()
{
synchronized (correlationIdLock_)
{
if (++lastCorrelationId_ == 0) lastCorrelationId_ = 1; //@P0C
return lastCorrelationId_; //@P0C
}
}
void send(DataStream requestStream, int correlationId) throws IOException
{
if (Trace.traceOn_) {
Trace.log(Trace.DIAGNOSTIC, "send(): send request..."); //@pdc
requestStream.setConnectionID(connectionID_);
}
requestStream.setCorrelation(correlationId);
requestStream.write(outStream_);
}
synchronized DataStream receive(int correlationId) throws IOException
{
if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "AS400Server receive"); //@pdc
DataStream reply = null;
do
{
synchronized (replyList_)
{
if (!replyList_.isEmpty())
{
for (int i = 0; i < replyList_.size(); i++)
{
DataStream nextReply = (DataStream)replyList_.elementAt(i);
if (nextReply.getCorrelation() == correlationId)
{
replyList_.removeElementAt(i);
reply = nextReply;
break;
}
}
}
}
if (reply == null)
{
if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "run(): wait for reply..."); //@pdc
DataStream ds = null;
if (service_ != AS400.RECORDACCESS)
{
ds = ClientAccessDataStream.construct(inStream_, instanceReplyStreams_, replyStreams_, system_, connectionID_);
}
else
{
ds = DDMDataStream.construct(inStream_, replyStreams_, system_, connectionID_);
}
if (Trace.isTraceOn()) {
Trace.log(Trace.DIAGNOSTIC, "run(): reply received..." + ds.toString());
}
boolean keepDataStream = true;
int correlation = ds.getCorrelation();
for (int i = 0; i < discardList_.size(); i++)
{
if (((Integer)discardList_.elementAt(i)).intValue() == correlation)
{
discardList_.removeElementAt(i);
keepDataStream = false;
break;
}
}
if (keepDataStream)
{
if (Trace.isTraceOn()) Trace.log(Trace.DIAGNOSTIC, "adding reply...", correlation);
replyList_.addElement(ds); // Save off the reply.
}
}
else
{
if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "received(): valid reply received...", correlationId); //@pdc
}
}
while (reply == null);
return reply;
}
void forceDisconnect()
{
closed_ = true;
if (service_ == AS400.DATABASE || service_ == AS400.COMMAND || service_ == AS400.CENTRAL)
{
AS400EndJobDS endjob = new AS400EndJobDS(AS400Server.getServerId(service_));
try
{
endjob.write(outStream_);
}
catch(IOException e)
{
Trace.log(Trace.ERROR, "Send end job data stream failed.", e);
}
}
try
{
socket_.close();
}
catch (IOException e)
{
Trace.log(Trace.ERROR, "Socket close failed.", e);
}
}
int getSoTimeout() throws SocketException {
return socket_.getSoTimeout();
}
void setSoTimeout(int timeout) throws SocketException {
socket_.setSoTimeout(timeout);
}
}