Defining and using a new output stream

Developing WebSpeed Applications

Handling DISPLAY Output : Working with DISPLAY output : Directing DISPLAY output : Defining and using a new output stream

To define and use a new output stream, WebSpeed provides two statements:

DEFINE STREAM statement — Defines a stream

OUTPUT TO statement with the "WEB" option — Opens and directs the specified stream to your Web server

If you do not specify a stream in the OUTPUT TO statement, WebSpeed uses a default unnamed stream to send your output to the Web.

The following example defines a new stream and directs it to the Web:

FIND FIRST Customer NO-LOCK.
DEFINE STREAM MyStream.
OUTPUT STREAM MyStream TO "WEB".
DISPLAY STREAM MyStream Customer.Name Customer.Phone.

This statement opens the default unnamed stream and directs it to the Web:

FIND FIRST Customer NO-LOCK.
OUTPUT TO "WEB".
DISPLAY Customer.Name Customer.Phone.

Both of these examples use the DISPLAY statement directly, sending its output to the Web. However, in the following example, there is no way to guarantee which will appear first in the Web page, the customer name or the customer address:

FIND FIRST Customer NO-LOCK.
OUTPUT TO "WEB".
DISPLAY Customer.Name Customer.Phone.
DISPLAY {&WEBSTREAM} Customer.Address Customer.City Customer.PostalCode.

For more information on the statements used in these examples, see OpenEdge Development: ABL Reference.