/**
* <summary>
* Determines whether the cursor indicated by <c>cursorID</c> is still
* a valid cursor, and has not been invalidated by other queue readers.
* </summary>
*
* <param name="cursorID"> The cursor which should be be evaluated</param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.TestCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
*
* <seealso cref="MQConnection.TestCursor(QueueHandle,CursorHandle)">MQConnection.TestCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode TestCursor(CursorHandle cursorID)
{
return(con.TestCursor(que, cursorID));
}
/**
* <summary>
* Advances the cursor to the next message in the queue.
* </summary>
*
* <param name="cursorID"> The cursor to be advanced.</param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.AdvanceCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
* <seealso cref="MQConnection.AdvanceCursor(QueueHandle,CursorHandle)">MQConnection.AdvanceCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode AdvanceCursor(CursorHandle cursorID)
{
return(con.AdvanceCursor(que, cursorID));
}
/**
* <summary>
* Attempts to locate the messaged indicated by <c>id</c>. If the message
* is succesfully located, the cursor will point to the message idenfified
* and the message may be retrieved there after.
* </summary>
*
* <param name="id">The recipt UUID of the message to be located </param>
* <param name="timeout">
* The maximum number of seconds the call should be allowed
* before resulting in a "timeout".</param>
* <param name="cursorID">
* The cursor which should be be assigned the position
* of the message indicated by <c>id</c></param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.SeekID(QueueHandle,UUID,int,CursorHandle)</c>
* for error codes.
* </returns>
*
* <seealso cref="MQConnection.SeekID(QueueHandle,UUID,int,CursorHandle)">MQConnection.SeekID(QueueHandle,UUID,int,CursorHandle)</seealso>
*/
public ErrorCode SeekID(UUID id, int timeout, CursorHandle cursorID)
{
return(con.SeekID(que, id, timeout, cursorID));
}
/**
* <summary>
* Opens a cursor for sequential reading of the queue. The newly opened
* cursor points to the oldest, highest priority message in the queue.
* </summary>
*
* <remarks>
* <para>Cursors may be used to violate the priority FIFO nature of the queue
* by scanning the queue and only retreiving messages which meet the
* criteria of the reader. Cursor access is sequential when used in conjunction
* with <c>AdvanceCursor(CursorHandle)</c>, however specific messages may
* be sought out by a call to <c>SeekID(UUID,int,CursorHandle)</c>. </para>
* </remarks>
*
* <param name="cursorID">
* A previously allocated reference to a <c>CursorHandle</c>
* which will receive the reference to the cursor.</param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.OpenCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
* <seealso cref="MQConnection.OpenCursor(QueueHandle,CursorHandle)">MQConnection.OpenCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode OpenCursor(CursorHandle cursorID)
{
return(con.OpenCursor(que, cursorID));
}
/**
* <summary>
* Closes a cursor when it is nolonger needed to access the queue. The
* cursor is invalidated after a call to <c>CloseCursor()</c> and
* should not be used again.
* </summary>
*
* <param name="cursorID"> The cursor to be closed.</param>
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.CloseCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
* <seealso cref="MQConnection.CloseCursor(QueueHandle,CursorHandle)">MQConnection.CloseCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode CloseCursor(CursorHandle cursorID)
{
return(con.CloseCursor(que, cursorID));
}
/**
* <summary>
* Retrieves the message pointed to by <c>cursorID</c>. The results
* are placed in the object <c>msg</c>.
* </summary>
*
* <remarks>
* <para>Note: Retrieved messages are removed from the queue.</para>
* </remarks>
*
* <param name="qhandle"> A handle to a queue previously opened by a call to OpenQueue(string)</param>
* <param name="retrievebody"> A flag indicating whether the body of the message should be retrieved</param>
* <param name="cursorID"> The cursor indicating the current position in the queue to be Read from</param>
* <param name="msg"> Receives the contents of the message.</param>
*
* <returns>Upon success a value of <c>ErrorCode.EC_NOERROR</c>, otherwise
* errors such as but not limited to could occur: <br/>
* <table border="0" cellpadding="3" cellspacing="0">
* <tr><td><c>ErrorCode.EC_NETWORKERROR</c></td>
* <td>A networking error has occurred and the conneciton
* is nolonger valid.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOMOREMESSAGES</c></td>
* <td>The queue is empty and no more messages are
* available.
* </td></tr>
* <tr><td><c>ErrorCode.EC_ALREADYCLOSED</c></td>
* <td>The queue reference is not valid as it has
* been closed.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTAUTHORIZED</c></td>
* <td>The user is not authorized to Read messages from this
* queue.
* </td></tr>
* <tr><td><c>ErrorCode.EC_CURSORINVALIDATED</c></td>
* <td>The cursor nolonger points to a valid location in the
* queue.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTOPEN</c></td>
* <td>The queue specified has not been opened by this connection.
* </td></tr>
* </table>
* </returns>
*
* <seealso cref="OpenQueue(string, QueueHandle)"/>
*/
public ErrorCode RetrieveCursor(QueueHandle qhandle, bool retrievebody, CursorHandle cursorID, QueueMessage msg)
{
ErrorCode ret = ErrorCode.EC_NOERROR;
PEEK_CURSOR_RETRIEVE_CURSOR_PARAMS parms = new PEEK_CURSOR_RETRIEVE_CURSOR_PARAMS();
parms.queueID = qhandle;
parms.retrievebody = (byte)(retrievebody?1:0);
parms.cursorID = cursorID;
try {
output.Write(Safmq.CMD_RETRIEVE_CURSOR);
parms.Write(output);
output.Flush();
ret = getResponseCode();
if (ret == ErrorCode.EC_NOERROR) {
msg.Read(input,retrievebody);
ret = ackRetrieveCursor(qhandle,msg);
}
} catch (Exception) {
ret = ErrorCode.EC_NETWORKERROR;
}
return ret;
}
/**
* <summary>
* Retrieves the message pointed to by <c>cursorID</c>. The results
* are placed in the object <c>msg</c>. The message retrieved is
* <i>not</i> remvoed from the queue and is available for reading by other
* queue readers.
*
* <para>Note: Retrieved messages are removed from the queue.</para>
* </summary>
*
* <param name="retrievebody"> A flag indicating whether the body of the message should be retrieved</param>
* <param name="cursorID"> The cursor indicating the current position in the queue to be read from</param>
* <param name="msg"> Receives the contents of the message.</param>
*
* <returns>Upon success a value of <c>Safmq.EC_NOERROR</c>, otherwise
* see <c>MQConnection.PeekCursor()</c> for result codes.</returns>
* <seealso cref="MQConnection.PeekCursor(QueueHandle,bool,CursorHandle,QueueMessage)">MQConnection.Retrieve(QueueHandle,bool,int,QueueMessage)</seealso>
*/
public ErrorCode PeekCursor(bool retrievebody, CursorHandle cursorID, QueueMessage msg)
{
return(con.PeekCursor(que, retrievebody, cursorID, msg));
}
/**
* <summary>
* Retrieves the message pointed to by <c>cursorID</c>. The results
* are placed in the object <c>msg</c>.
*
* <para>Note: Retrieved messages are removed from the queue.</para>
* </summary>
*
* <param name="retrievebody">
* A flag indicating whether the body of the message should be retrieved</param>
* <param name="cursorID"> The cursor indicating the current position in the queue to be read from</param>
* <param name="msg"> Receives the contents of the message.</param>
*
* <returns>Upon success a value of <c>Safmq.EC_NOERROR</c>, otherwise
* see MQConnection.Retrieve() for result codes.</returns>
* <seealso cref="MQConnection.RetrieveCursor(QueueHandle,bool,CursorHandle,QueueMessage)">MQConnection.Retrieve(QueueHandle,bool,int,QueueMessage)</seealso>
*/
public ErrorCode RetrieveCursor(bool retrievebody, CursorHandle cursorID, QueueMessage msg)
{
return con.RetrieveCursor(que,retrievebody,cursorID,msg);
}
/**
* <summary>
* Attempts to locate the messaged indicated by <c>id</c>. If the message
* is succesfully located, the cursor will point to the message idenfified
* and the message may be retrieved there after.
* </summary>
*
* <param name="id">The recipt UUID of the message to be located </param>
* <param name="timeout">
* The maximum number of seconds the call should be allowed
* before resulting in a "timeout".</param>
* <param name="cursorID">
* The cursor which should be be assigned the position
* of the message indicated by <c>id</c></param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.SeekID(QueueHandle,UUID,int,CursorHandle)</c>
* for error codes.
* </returns>
*
* <seealso cref="MQConnection.SeekID(QueueHandle,UUID,int,CursorHandle)">MQConnection.SeekID(QueueHandle,UUID,int,CursorHandle)</seealso>
*/
public ErrorCode SeekID(UUID id, int timeout, CursorHandle cursorID)
{
return con.SeekID(que,id,timeout,cursorID);
}
/**
* <summary>
* Closes a cursor when it is nolonger needed to access the queue. The
* cursor is invalidated after a call to <c>CloseCursor()</c> and
* should not be used again.
* </summary>
*
* <param name="cursorID"> The cursor to be closed.</param>
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.CloseCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
* <seealso cref="MQConnection.CloseCursor(QueueHandle,CursorHandle)">MQConnection.CloseCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode CloseCursor(CursorHandle cursorID)
{
return con.CloseCursor(que,cursorID);
}
/**
* <summary>
* Opens a cursor for sequential reading of the queue. The newly opened
* cursor points to the oldest, highest priority message in the queue.
* </summary>
*
* <remarks>
* <para>Cursors may be used to violate the priority FIFO nature of the queue
* by scanning the queue and only retreiving messages which meet the
* criteria of the reader. Cursor access is sequential when used in conjunction
* with <c>AdvanceCursor(CursorHandle)</c>, however specific messages may
* be sought out by a call to <c>SeekID(UUID,int,CursorHandle)</c>. </para>
* </remarks>
*
* <param name="cursorID">
* A previously allocated reference to a <c>CursorHandle</c>
* which will receive the reference to the cursor.</param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.OpenCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
* <seealso cref="MQConnection.OpenCursor(QueueHandle,CursorHandle)">MQConnection.OpenCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode OpenCursor(CursorHandle cursorID)
{
return con.OpenCursor(que,cursorID);
}
/**
* <summary>
* Advances the cursor to the next message in the queue.
* </summary>
*
* <param name="cursorID"> The cursor to be advanced.</param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.AdvanceCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
* <seealso cref="MQConnection.AdvanceCursor(QueueHandle,CursorHandle)">MQConnection.AdvanceCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode AdvanceCursor(CursorHandle cursorID)
{
return con.AdvanceCursor(que,cursorID);
}
/**
* <summary>
* Closes a cursor when it is nolonger needed to access the queue. The
* cursor is invalidated after a call to <c>CloseCursor()</c> and
* should not be used again.
* </summary>
*
* <param name="qhandle"> A handle to a queue previously opened by a call to OpenQueue(string)</param>
* <param name="cursorID"> The cursor to be closed.</param>
*
* <returns><c>ErrorCode.EC_NOERROR</c> upon success, otherwise errors returned
* could be but are not limited to:<br/>
* <table border="0" cellpadding="3" cellspacing="0">
* <tr><td><c>ErrorCode.EC_NETWORKERROR</c></td>
* <td>A networking error has occurred and the conneciton
* is nolonger valid.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTAUTHORIZED</c></td>
* <td>The user is not authorized to Read messages from this
* queue.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTOPEN</c></td>
* <td>The queue specified has not been opened by this connection.
* </td></tr>
* </table>
* </returns>
*
* <seealso cref="OpenQueue(string, QueueHandle)"/>
*/
public ErrorCode CloseCursor(QueueHandle qhandle, CursorHandle cursorID)
{
ErrorCode ret = ErrorCode.EC_NOERROR;
CLOSE_CURSOR_ADVANCE_CURSOR_TEST_CURSOR_PARAMS parms = new CLOSE_CURSOR_ADVANCE_CURSOR_TEST_CURSOR_PARAMS();
parms.queueID = qhandle;
parms.cursorID = cursorID;
try {
output.Write(Safmq.CMD_CLOSE_CURSOR);
parms.Write(output);
output.Flush();
ret = getResponseCode();
} catch (Exception) {
ret = ErrorCode.EC_NETWORKERROR;
}
return ret;
}
/**
* <summary>
* Attempts to locate the messaged indicated by <c>id</c>. If the message
* is succesfully located, the cursor will point to the message idenfified
* and the message may be retrieved there after.
* </summary>
*
* <param name="qhandle"> A handle to a queue previously opened by a call to OpenQueue(string)</param>
* <param name="id"> The recipt UUID of the message to be located </param>
* <param name="timeoutseconds">The maximum number of seconds the call should be allowed
* before resulting in a "timeout".</param>
* <param name="cursorID"> The cursor which should be be assigned the position
* of the message indicated by <c>id</c></param>
*
* <returns><c>ErrorCode.EC_NOERROR</c> upon success, otherwise errors returned
* could be but are not limited to:<br/>
* <table border="0" cellpadding="3" cellspacing="0">
* <tr><td><c>ErrorCode.EC_NETWORKERROR</c></td>
* <td>A networking error has occurred and the conneciton
* is nolonger valid.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTAUTHORIZED</c></td>
* <td>The user is not authorized to Read messages from this
* queue.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTOPEN</c></td>
* <td>The queue specified has not been opened by this connection.
* </td></tr>
* <tr><td><c>ErrorCode.EC_CURSORINVALIDATED</c></td>
* <td>The cursor is no longer valid.
* </td></tr>
* </table>
* </returns>
*
* <seealso cref="OpenQueue(string, QueueHandle)"/>
*/
public ErrorCode SeekID(QueueHandle qhandle, UUID id, int timeoutseconds, CursorHandle cursorID)
{
ErrorCode ret = ErrorCode.EC_NOERROR;
SEEK_ID_PARAMS parms = new SEEK_ID_PARAMS();
parms.queueID = qhandle;
parms.cursorID = cursorID;
parms.reciptID = id;
parms.timeoutseconds = timeoutseconds;
try {
output.Write(Safmq.CMD_SEEK_ID);
parms.Write(output);
output.Flush();
ret = getResponseCode();
} catch (Exception) {
ret = ErrorCode.EC_NETWORKERROR;
}
return ret;
}
public void test_PeekID_PeekFront_OpenCursor_PeekCursor_SeekID_RetrieveCursor_AdvanceCursor_TestCurosr_CloseCursor_RetrieveID()
{
MQConnection con = null;
try {
con = connectToServer(address, null, null);
addAllGroups(con);
addAllUsers(con);
addAllQueues(con);
QueueHandle handle = new QueueHandle();
ErrorCode ec = con.OpenQueue(TEST_QUEUE[0], handle);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to open queue: " + TEST_QUEUE[0]);
sendMessages(con, handle, 5, 0);
QueueMessage msg = new QueueMessage();
StreamWriter sw = new StreamWriter(msg.Stream);
sw.WriteLine(SPECIAL_MESSAGE);
sw.Close();
byte[] b = { 0, 0, 0, 0, 0, 0, 0, 0 };
UUID uuid = new UUID(new Guid(123456789,4321,1234,b));
msg.ReciptID = uuid;
//msg.ReciptID = ((UUID)uuid.Clone());
ec = con.Enqueue(handle, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to write special message");
sendMessages(con, handle, 5, 5);
msg = new QueueMessage();
ec = con.PeekID(handle, true, uuid, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to PeekID:" + ec);
string txt = (new StreamReader(msg.Stream)).ReadLine();
Console.WriteLine("txt:\t\t\t" + txt);
Console.WriteLine("uuid:\t\t\t" + (Guid)uuid);
Console.WriteLine("msg.ReceiptID:\t" + (Guid)msg.ReciptID);
Console.WriteLine("txt.Equals(SPECIAL_MESSAGE): " + txt.Equals(SPECIAL_MESSAGE));
Console.WriteLine("uuid.Equals(msg.ReceiptID)): " + uuid.Equals(msg.ReciptID));
Assert.IsTrue(txt.Equals(SPECIAL_MESSAGE) && uuid.Equals(msg.ReciptID), "Incorrect PeekID Message: " + (Guid)msg.ReciptID);
msg = new QueueMessage();
ec = con.PeekFront(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to PeekFront");
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals("0"), "Incorrect PeekFront Message: body=" + txt);
CursorHandle cur = new CursorHandle();
ec = con.OpenCursor(handle, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to OpenCursor");
ec = con.SeekID(handle, uuid, 0, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to SeekID");
msg = new QueueMessage();
ec = con.PeekCursor(handle, true, cur, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to PeekCursor");
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals(SPECIAL_MESSAGE) && uuid.Equals(msg.ReciptID), "Incorrect PeekCursor Message: " + msg.ReciptID);
ec = con.AdvanceCursor(handle, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to AdvanceCursor");
msg = new QueueMessage();
ec = con.PeekCursor(handle, true, cur, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to PeekCursor (after advance)");
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals("5"), "Incorrect PeekCursor (after advance) Message: " + msg.ReciptID);
msg = new QueueMessage();
ec = con.RetrieveCursor(handle, true, cur, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor");
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals("5"), "Incorrect PeekCursor (after RetrieveCursor) Message: " + msg.ReciptID);
ec = con.TestCursor(handle, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to test Cursor, ec: " + ec);
ec = con.CloseCursor(handle, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to CloseCursor, ec: " + ec);
msg = new QueueMessage();
ec = con.RetrieveID(handle, true, uuid, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveID");
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals(SPECIAL_MESSAGE) && uuid.Equals(msg.ReciptID), "Incorrect RetrieveID Message: " + msg.ReciptID);
int[] bodies = { 0, 1, 2, 3, 4, 6, 7, 8, 9 }; // 5 was retrieved above.
for(int x=0; x<bodies.Length; x++) {
msg = new QueueMessage();
ec = con.Retrieve(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to retrieve message: " + x);
txt = (new StreamReader(msg.Stream)).ReadLine();
Console.WriteLine("txt: " + txt);
Assert.IsTrue(int.Parse(txt) == bodies[x], "Incorrect message: " + txt);
}
ec = con.CloseQueue(handle);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to Close queue");
} finally {
if (con != null)
con.Close();
}
}
/**
* <summary>
* Determines whether the cursor indicated by <c>cursorID</c> is still
* a valid cursor, and has not been invalidated by other queue readers.
* </summary>
*
* <param name="cursorID"> The cursor which should be be evaluated</param>
*
* <returns><c>Safmq.EC_NOERROR</c> upon success, otherwise see
* <c>MQConnection.TestCursor(QueueHandle,CursorHandle)</c>
* for error codes.
* </returns>
*
* <seealso cref="MQConnection.TestCursor(QueueHandle,CursorHandle)">MQConnection.TestCursor(QueueHandle,CursorHandle)</seealso>
*/
public ErrorCode TestCursor(CursorHandle cursorID)
{
return con.TestCursor(que,cursorID);
}
public void test_Transactions()
{
MQConnection con = null;
try {
con = connectToServer(address, null, null);
addAllGroups(con);
addAllUsers(con);
addAllQueues(con);
QueueHandle handle = new QueueHandle();
ErrorCode ec = con.OpenQueue(TEST_QUEUE[0], handle);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to open queue: " + TEST_QUEUE[0]);
sendMessages(con, handle, 10, 0);
ec = con.BeginTransaction();
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to BeginTransaction:" + ec);
CursorHandle cur = new CursorHandle();
ec = con.OpenCursor(handle, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to OpenCursor:" + ec);
ec = con.AdvanceCursor(handle, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to AdvanceCursor:" + ec);
ec = con.AdvanceCursor(handle, cur);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to AdvanceCursor:" + ec);
QueueMessage msg = new QueueMessage();
ec = con.RetrieveCursor(handle, true, cur, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor:" + ec);
string txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals("2"), "Incorrect Message: " + txt + " should be 2");
msg = new QueueMessage();
ec = con.RetrieveCursor(handle, true, cur, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor:" + ec);
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals("3"), "Incorrect Message: " + txt + " should be 3");
msg = new QueueMessage();
ec = con.Retrieve(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor:" + ec);
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(txt.Equals("0"), "Incorrect Message: " + txt + " should be 0");
int[] ids = { 1, 4, 5, 6, 7, 8, 9 };
for(int x=0;x<ids.Length;x++) {
msg = new QueueMessage();
ec = con.Retrieve(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor:" + ec);
txt = (new StreamReader(msg.Stream)).ReadLine();
Console.WriteLine("txt: " + txt);
Assert.IsTrue(int.Parse(txt) == ids[x], "Incorrect Message: " + txt + " should be " + ids[x]);
}
ec = con.RollbackTransaction();
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RollbackTransaction:" + ec);
for(int x=0;x<8;x++) {
msg = new QueueMessage();
ec = con.Retrieve(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor:" + ec);
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(int.Parse(txt) == x, "Incorrect Message: " + txt + " should be " + x);
}
ec = con.CommitTransaction();
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to CommitTransaction:" + ec);
for(int x=0;x<2;x++) {
msg = new QueueMessage();
ec = con.Retrieve(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor:" + ec);
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(int.Parse(txt) == x + 8, "Incorrect Message: " + txt + " should be " + (x + 8));
}
ec = con.RollbackTransaction();
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RollbackTransaction:" + ec);
ec = con.EndTransaction();
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RollbackTransaction:" + ec);
for(int x=0;x<2;x++) {
msg = new QueueMessage();
ec = con.Retrieve(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unable to RetrieveCursor:" + ec);
txt = (new StreamReader(msg.Stream)).ReadLine();
Assert.IsTrue(int.Parse(txt) == x + 8, "Incorrect Message: " + txt + " should be " + (x + 8));
}
msg = new QueueMessage();
ec = con.Retrieve(handle, true, 0, msg);
Assert.IsTrue(ec == ErrorCode.EC_NOMOREMESSAGES, "Able to RetrieveCursor:" + ec);
ec = con.CloseQueue(handle);
Assert.IsTrue(ec == ErrorCode.EC_NOERROR, "Unble to CloseQueue:" + ec);
} finally {
if (con != null)
con.Close();
}
}
/**
* <summary>
* Opens a cursor for sequential reading of the queue. The newly opened
* cursor points to the oldest, highest priority message in the queue.
* </summary>
*
* <remarks>
* <para>Cursors may be used to violate the priority FIFO nature of the queue
* by scanning the queue and only retreiving messages which meet the
* criteria of the reader. Cursor access is sequential when used in conjunction
* with <c>AdvanceCursor(CursorHandle)</c>, however specific messages may
* be sought out by a call to <c>SeekID(UUID,int,CursorHandle)</c>. </para>
* </remarks>
*
* <param name="qhandle"> A handle to a queue previously opened by a call to OpenQueue(string)</param>
* <param name="cursorID"> A previously allocated reference to a <c>CursorHandle</c>
* which will receive the reference to the cursor.</param>
* <returns><c>ErrorCode.EC_NOERROR</c> upon success, otherwise errors returned
* could be but are not limited to:<br/>
* <table border="0" cellpadding="3" cellspacing="0">
* <tr><td><c>ErrorCode.EC_NETWORKERROR</c></td>
* <td>A networking error has occurred and the conneciton
* is nolonger valid.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTAUTHORIZED</c></td>
* <td>The user is not authorized to Read messages from this
* queue.
* </td></tr>
* <tr><td><c>ErrorCode.EC_NOTOPEN</c></td>
* <td>The queue specified has not been opened by this connection.
* </td></tr>
* </table>
* </returns>
*
* <seealso cref="OpenQueue(string, QueueHandle)"/>
*/
public ErrorCode OpenCursor(QueueHandle qhandle, CursorHandle cursorID)
{
ErrorCode ret = ErrorCode.EC_NOERROR;
QUEUE_CLOSE_OPEN_CURSOR_PARAMS parms = new QUEUE_CLOSE_OPEN_CURSOR_PARAMS();
parms.queueID = qhandle;
try {
output.Write(Safmq.CMD_OPEN_CURSOR);
parms.Write(output);
output.Flush();
ret = getResponseCode();
if (ret == ErrorCode.EC_NOERROR) {
cursorID.handle = input.ReadInt32();
}
} catch (Exception) {
ret = ErrorCode.EC_NETWORKERROR;
}
return ret;
}
