Export.XML.MetaDataType DataWindow object property
Description
Setting that controls the type of metadata generated with
the XML exported from a DataWindow object using the SaveAs method
or a .Data.XML expression.
Controls
DataWindow objects
Syntax
PowerBuilder dot notation:
|
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<span>dw_control</span>.Object.DataWindow.Export.XML.MetaDataType |
Describe and Modify argument:
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"DataWindow.Export.XML.MetaDataType { = '<span>value </span>' }" |
|
Parameter |
Description |
|---|---|
|
value |
(exp) A string specifying |
Usage
This property must be set to specify the type of metadata
generated before you call the SaveAs method with XML! as
the SaveAsType to save data as an XML document,
or use the .Data.XML expression to save data
as an XML string. The metadata is saved into the exported XML itself
or into an associated file, depending on the value of the Export.XML.SaveMetaData property.
The Export.XML.MetaDataType property is
an enumerated datatype that can hold the following values:
|
Enumerated value |
Numeric value |
Meaning |
|---|---|---|
|
XMLNone! |
0 |
Metadata (XML Schema or DTD) is not generated |
|
XMLSchema! |
1 |
XML Schema is generated when XML is exported |
|
XMLDTD! |
2 |
DTD is generated when XML is exported |
If the data item for a column is null or an empty
string, an empty element is created when you export XML. If
you select XMLSchema!, child elements with null data
items are created with the content "xsi:nil='true'".
In the painter
In the Data Export tab in the Properties view for the DataWindow
object, select XML from the Format to Configure list and select a
value from the Meta Data Type list.
Examples
This statement specifies that no metadata will be
generated when the DataWindow is exported to XML:
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dw1.Object.DataWindow.Export.XML.MetaDataType = XMLNone! |
These statements export the contents of dw1 to the file c:myxml.xml using
the XML export template called t_schema, and generate an
external XML schema file at c:myxml.xsd:
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dw1.Modify("DataWindow.Export.XML.UseTemplate = 't_schema'")<br>dw1.Modify("DataWindow.Export.XML.MetaDataType = 1")<br>dw1.Modify("DataWindow.Export.XML.SaveMetaData = 1")<br>dw1.SaveAs("c:myxml.xml", XML!, false) |