PRACTICAL GUIDEUnder review
Reading and generating XML
TXmlManager():New(); Parse(cXml); Save2String()Parses and serializes XML with TXmlManager.
Overview
TXmlManager represents an XML tree that can be traversed and serialized. Parse returns logical: inspect the tree only after success; Error provides failure diagnostics. Save2String generates XML from the current tree without promising byte-for-byte input equality. Documentation deprecates XmlParser and recommends TXmlManager. The community TLPP example handles Parse and reads an XPath node; only creation and error handling are adapted into this minimal AdvPL example. (Sources: refs. 1–5.)
Syntax
TXmlManager():New(); Parse(cXml); Save2String()Commented example
#Include "Protheus.ch"
User Function Ed506()
Local oXml := TXmlManager():New()
Local cXml := "<item><code>ED01</code></item>"
// Check parsing before using the tree.
If oXml:Parse(cXml)
ConOut(oXml:Save2String())
Else
ConOut(oXml:Error())
EndIf
FreeObj(oXml)
Return NilExpected result
On success, prints XML containing item/code with ED01. Under review: editorial example neither compiled nor run in Protheus. Check includes, release, RDD and context before testing.
- Define encoding, escape dynamic content and bound input size. Parsing does not replace schema or business validation. Release the object on failure paths too.
- Under review: editorial example neither compiled nor run in Protheus. Check includes, release, RDD and context before testing.
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