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/*-------------------------------------------------------------------------
*
* FastpathArg.java
* Each fastpath call requires an array of arguments, the number and type
* dependent on the function being called.
*
* Copyright (c) 2003, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/fastpath/Attic/FastpathArg.java,v 1.5 2003/05/29 03:21:32 barry Exp $
*
*-------------------------------------------------------------------------
*/
package org.postgresql.fastpath;
import java.io.IOException;
public class FastpathArg
{
/*
* Type of argument, true=integer, false=byte[]
*/
public boolean type;
/*
* Integer value if type=true
*/
public int value;
/*
* Byte value if type=false;
*/
public byte[] bytes;
/*
* Constructs an argument that consists of an integer value
* @param value int value to set
*/
public FastpathArg(int value)
{
type = true;
this.value = value;
}
/*
* Constructs an argument that consists of an array of bytes
* @param bytes array to store
*/
public FastpathArg(byte bytes[])
{
type = false;
this.bytes = bytes;
}
/*
* Constructs an argument that consists of part of a byte array
* @param buf source array
* @param off offset within array
* @param len length of data to include
*/
public FastpathArg(byte buf[], int off, int len)
{
type = false;
bytes = new byte[len];
System.arraycopy(buf, off, bytes, 0, len);
}
/*
* Constructs an argument that consists of a String.
* @param s String to store
*/
public FastpathArg(String s)
{
this(s.getBytes());
}
/*
* This sends this argument down the network stream.
*
* <p>The stream sent consists of the length.int4 then the contents.
*
* <p><b>Note:</b> This is called from Fastpath, and cannot be called from
* client code.
*
* @param s output stream
* @exception IOException if something failed on the network stream
*/
protected void send(org.postgresql.core.PGStream s) throws IOException
{
if (type)
{
// argument is an integer
s.SendInteger(4, 4); // size of an integer
s.SendInteger(value, 4); // integer value of argument
}
else
{
// argument is a byte array
s.SendInteger(bytes.length, 4); // size of array
s.Send(bytes);
}
}
protected int sendSize()
{
if (type)
{
return 8;
}
else
{
return 4+bytes.length;
}
}
}
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