Part of Anders Bengtsson's patch to clean up Connection.java

Dave Cramer · Dave Cramer · commit 00923229c2f0 · 2002-03-21T02:40:03.000Z
diff --git a/src/interfaces/jdbc/org/postgresql/core/StartupPacket.java b/src/interfaces/jdbc/org/postgresql/core/StartupPacket.java
@@ -0,0 +1,43 @@
+package org.postgresql.core;
+
+import org.postgresql.PG_Stream;
+import java.io.IOException;
+
+/**
+ * Sent to the backend to initialize a newly created connection.
+ *
+ * $Id: StartupPacket.java,v 1.1 2002/03/21 02:40:03 davec Exp $
+ */
+
+public class StartupPacket
+{
+	private static final int SM_DATABASE = 64;
+	private static final int SM_USER = 32;
+	private static final int SM_OPTIONS = 64;
+	private static final int SM_UNUSED = 64;
+	private static final int SM_TTY = 64;
+
+	private int protocolMajor;
+	private int protocolMinor;
+	private String user;
+	private String database;
+
+	public StartupPacket(int protocolMajor, int protocolMinor, String user, String database) {
+		this.protocolMajor = protocolMajor;
+		this.protocolMinor = protocolMinor;
+		this.user = user;
+		this.database = database;
+	}
+
+    public void writeTo(PG_Stream stream) throws IOException
+    {
+		stream.SendInteger(4 + 4 + SM_DATABASE + SM_USER + SM_OPTIONS + SM_UNUSED + SM_TTY, 4);
+		stream.SendInteger(protocolMajor, 2);
+		stream.SendInteger(protocolMinor, 2);
+		stream.Send(database.getBytes(), SM_DATABASE);
+
+		// This last send includes the unused fields
+		stream.Send(user.getBytes(), SM_USER + SM_OPTIONS + SM_UNUSED + SM_TTY);
+	}
+}
+
