OpenRequest method

When used with the XmlWriter extended data type, it sends an XML in the http request´s body. When used with the XmlReader extended data type, it is used in a web procedure (WebProc, procedure "main" and HTTP protocol) to read an XML included in the http request´s body.

Syntax

XmlDataType.OpenRequest(HttpRequest)

Where: 

XmlDataType
     is XmlReader or XmlWriter extended data type.

Scope

Extended data types: XMLWriter Data Type, XMLReader Data Type
Generators:  .NET, .NET Framework, Java, Ruby (up to GeneXus X Evolution 3), Visual FoxPro (up to GeneXus X Evolution 3)

Samples

Client program:

// &Client is HttpClient type
// &Writer is XMLWriter type
// &Reader is XMLReader type

// Define the host and the the port where make the request
&client.host = "localhost"
&client.port = 88


// Adding the XML to request
&Writer.openRequest(&Client)
&Writer.WriteStartElement("Parameters")
&Writer.WriteElement("a", &A)
&Writer.WriteElement("b", &B)
&Writer.WriteEndElement()
&Writer.Close()

// Make POST to the WebProc
&Client.Execute("POST", "/servlet/awebproc")

// Read the XML than return and loaded in the internal variables
&Reader.OpenResponse(&client)
&Reader.Read()
&Reader.Read()

&a = Val(&Reader.Value)
&Reader.Read()   
&b = Val(&Reader.Value)
&Reader.Close()

Program server (WebProc):

// &Request is HttpRequest type
// &Response is HttpResponse type
// &Writer is XMLWriter type
// &Reader is XMLReader type

// Read the XML's parameters
&Reader.OpenRequest(&Request)
&Reader.Read()
&Reader.Read()
&a = Val(&Reader.Value)
&reader.read()   
&b = Val(&Reader.Value)
&Reader.Close()

// Add 1 to each value
&a = &a + 1 &b = &b + 1

// Write parameters into response
&Writer.openResponse(&Response)
&Writer.WriteStartElement("Parameters")
&Writer.WriteElement("a", &a)
&Writer.WriteElement("b", &b)
&Writer.WriteEndElement()
&Writer.Close()

See Also

ExcelDocument data type
WordDocument Data Type
XMLWriter Data Type
XMLReader Data Type