core/conn/jdbc_type2/src/main/java/org/apache/trafodion/jdbc/t2/TLobInputStream.java

// @@@ START COPYRIGHT @@@
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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// software distributed under the License is distributed on an
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// KIND, either express or implied.  See the License for the
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/* -*-java-*-
 * Filename    : TLobInputStream.java
 * Description :
 *
 * --------------------------------------------------------------------
 */

package org.apache.trafodion.jdbc.t2;

import java.sql.*;
import java.io.*;
import java.util.Date;

public class TLobInputStream extends java.io.InputStream
{
	public int available() throws IOException
	{
		if (out_ != null)
			out_.println(getTraceId()+"available()");
		return is_.available();
	}

	public void close() throws IOException
	{
		if (out_ != null)
			out_.println(getTraceId()+"close()");
		is_.close();
	}

	public void mark(int readlimit)
	{
		if (out_ != null)
			out_.println(getTraceId()+"mark("+ readlimit + ")");
		is_.mark(readlimit);
	}

	public boolean markSupported()
	{
		if (out_ != null)
			out_.println(getTraceId()+"markSupported()");
		return is_.markSupported();
	}

	public int read() throws IOException
	{
		if (out_ != null)
			out_.println(getTraceId()+"read()");
		return is_.read();
	}

	public int read(byte[] b)
         throws IOException
	{
		if (out_ != null)
			out_.println(getTraceId()+"read(" + b + ")");
		return is_.read(b);
	}

	public int read(byte[] b,
                int off,
                int len)
         throws IOException
	{
		if (out_ != null)
			out_.println(getTraceId()+"read(" + b + ", " + off + ", " + len + ")");
		return is_.read(b, off, len);
	}

	public void reset() throws IOException
	{
		if (out_ != null)
			out_.println(getTraceId()+"reset()");
		is_.reset();
	}

	public long skip(long n)
          throws IOException
	{
		if (out_ != null)
			out_.println(getTraceId()+"skip(" + n + ")");
		return is_.skip(n);
	}
	
	// Constructors with access specifier as "default"
    TLobInputStream(InputStream is, PrintWriter out)
    {
       
        
        is_ = is;
        out_ = out;
       
    }
	public void setTraceId(String traceId_) {
		this.traceId_ = traceId_;
	}

	public String getTraceId() {
		 String className = null;
		 if (is_ != null)
	            className = is_.getClass().getName();

	        // Build up jdbcTrace output entry
			setTraceId(org.apache.trafodion.jdbc.t2.T2Driver.traceText
				+ org.apache.trafodion.jdbc.t2.T2Driver.dateFormat.format(new Date()) 
				+ "]:[" + Thread.currentThread() + "]:["
				+ System.identityHashCode(is_) +  "]:"
				+ className.substring(org.apache.trafodion.jdbc.t2.T2Driver.REMOVE_PKG_NAME,className.length()) 
				+ ".");    
		return traceId_;
	}
	//fields
	InputStream is_;
	PrintWriter out_;
	private String traceId_;
}