XML functions

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Manipulating an XML document

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XML functions

Manipulating an XML document

Two methods can be used to manipulate an XML document:

Using an xmlDocument variable (Recommended method). This method allows you to use an XSD file.
Several types of specific variables are available:


xmlAttribute	The xmlAttribute type is used to handle the attributes of a node in an XML document.
xmlDocument	The xmlDocument type is used to handle an XML file.
xmlNamespace	The xmlNamespace type is used to handle the XML namespace of a node attribute in an XML document.
xmlNode	The xmlNode type is used to handle a node of an XML document.

Several specific functions allow you to use xmlDocument variables


XMLBuildString	Retrieves and formats the content of an XML document (created by XMLDocument and modified by the XML functions).
XMLOpen	Loads an XML document from a file, a URL or a string into an xmlDocument variable.
XMLSave	Saves an XML document in a file.
XMLValidDocument	Validates an XML document from an XSD schema.

Using a string variable to store the XML document. The XML document can be manipulated using different XML functions.
The following functions are used to manage XML documents:


JSONToXML	Converts a JSON string to XML.
TextToXML	Converts an ANSI string to an XML string.
XMLAddAttribute	Adds an attribute into an XML document.
XMLAddChild	Adds a child tag into an XML document.
XMLBuildString	Retrieves and formats the content of an XML document (created by XMLDocument and modified by the XML functions).
XMLCancelSearch	Cancels the search performed by XMLFind.
XMLChild	Positions on the first child element of current element.
XMLChildExist	Specifies whether the current tag has children corresponding to the sought type (tag, attribute, ...).
XMLClose	Closes an XML document created by XMLDocument.
XMLData	Returns the value of current element (tag or XML attribute) or the value of one of its attributes.
XMLDelete	Deletes the current element (as well as the entire branch) from an XML document.
XMLDocument	Creates a new XML document.
XMLElementName	Returns the name of current element (tag or attribute).
XMLElementType	Returns the type of current element (tag or attribute).
XMLExecuteXPath	Executes an XPATH query: in an XML document. in an xmlDocument variable.
XMLExtractDocument	Creates a new XML document from an existing XML document.
XMLExtractString	Extracts the content of a tag found in an XML document.
XMLFind	Performs a search in an XML document.
XMLFindNamespaceByName	Finds an XML namespace according to its XML node and in the parents of the node.
XMLFindNamespaceByURI	Finds an XML namespace from its URI (Universal Resource Identifier) in a node and in the parents of this node.
XMLFirst	Positions on the first element (tag or attribute) in the current tree level.
XMLFound	Checks whether the current element corresponds to the current browse or to the current search.
XMLInsertDocument	Inserts the current XML tag found in an XML document into another XML document.
XMLInsertElement	Inserts an XML element (tag or attribute) into an XML document.
XMLLast	Positions on the last element (tag or attribute) of the current tree level.
XMLModify	Modifies the content of the current element found in the XML document.
XMLNamespace	Returns the prefix of the namespace associated with the current tag in an XML document.
XMLNamespaceURI	Returns the URI of the namespace associated with the current tag in an XML document.
XMLNext	Positionq on the next element (tag or attribute).
XMLOpen	Loads an XML document from a file, a URL or a string into an xmlDocument variable.
XMLOpenReader	Creates a reader used to read an XML document without loading it in memory.
XMLOut	Used to find out whether the element (tag or attribute) on which we want to be positioned is outside the XML document.
XMLParent	Positions on the parent element of current element (tag or attribute).
XMLParentName	Returns the name of parent tag for the current element (tag or attribute).
XMLPath	Returns the current position in the document in XPATH format.
XMLPrevious	Positions on the previous element (tag or attribute).
XMLRead	Returns the value of an XML element or the value of the attribute for an XML element.
XMLRename	Renames the current element (tag or attribute) in an XML document.
XMLRestorePosition	Restores the previously saved context of an XML document.
XMLResult	Returns the result of a calculation XPath query.
XMLRoot	Positions on the root tag of an XML document.
XMLSave	Saves an XML document in a file.
XMLSavePosition	Stores the current position in the XML document.
XMLSign	Signs an XML document.
XMLToJSON	Converts an XML string to JSON.
XMLToText	Converts a character string in XML format into a standard character string.
XMLValidDocument	Validates an XML document from an XSD schema.
XMLValidNode	Validates an XML node, its children and its attributes from its description in the XSD schema linked to the XML document.
XMLVerifySignature	Verifies the signature of an XML node.
XMLWrite	Creates or modifies the value of an XML element or the value of the attribute for an XML element.

You can also use other functions to manipulate XML documents:


HExportXML	Exports the records found in a data file (HFSQL or OLE DB), view or query to an XML file.
HImportXML	Imports an XML file into an HFSQL Classic or Client/Server data file. This data file must have been defined in the data model editor, or declared with HDeclare, HDeclareExternal or HDescribeFile).
HRecordToXML	Retrieves the structure and the value of the current record and exports them into a character string in XML format.
J2EERunXML	Runs a procedure on a server of J2EE XML web services.
LooperToXML	Creates an XML file with data from a Looper control (Looper control based on a data file or populated programmatically).
SOAPRunXML	Runs a procedure on a SOAP server.
TableToXML	Creates an XML file from the data found in a Table or TreeView Table control.

Related Examples:

Unit examples (WINDEV): Reading and writing in XML format

[ + ] Using the XMLxxx functions to:
- Create an XML document
- Read an XML document

Unit examples (WINDEV): XML parser

[ + ] Studying the content of an XML file via the XMLxxx functions of WINDEV

Training (WINDEV): WD Syntactic Coloring

[ + ] This example proposes a base class used to perform a standard syntax highlighting on some text.
This highlighting is based on a rough analysis of the lemmes found in a text in order to identify the elements of a programming language for instance.
It can be overridden or derived in order to customize the system and the highlighting language.
This example is used to highlight SQL code and XML code but it can be extended to highlight other languages or other text formats.

Complete examples (WINDEV): WD Multimedia

[ + ] This example shows how to play animations, audio and video files (MP3, WAV, AVI, MPEG, etc.) using the Multimedia control in WINDEV.