Xml.Sync
- Ertan Tike
Overview
Synchronizes specified xpath with input nodes and returns array of synchronized nodes.
Synchronizes specified xpath with input nodes and returns array of synchronized nodes.
Array<Xml> myXml.Sync(xpath: string, input: Array<Xml>, hash: (node: Xml) => string, removedNodes: Array<Xml>)
Arguments
string xpath
XPath of node to be append
Array<Xml> input
Array of nodes to be synchronize
(node: Xml) => string hash
Hash function to compare nodes. Can be omitted.
Array<Xml> removedNodes
Instance of array to add removed nodes. Can be omitted.
Remarks
Synchornization is based on input nodes and performs following actions on specified xpath;
Node comparison done with specified hash function which returns unique identifier of node. If not specified uses the node instance.
Non-existing nodes on input auto created in current node.
Existing nodes in both values are copied.
Non-existing nodes on input are removed from current node. Optionally a list of removed nodes are added on "removedNodes" parameter.
Example
Synchronize "Source" and "Target" node contents
var questions = $Xml.SelectAll('Source/Questions/Question');
$Xml.Sync('Target/Questions/Question', questions, function() {
return this.Evaluate('Id');
});Example
Performs xquery and merges results with current nodes
$Xml.SelectAll('Standards/Standard', function() {
var questions = $XmlRepository.QueryXml('for $q in InternalAudit//Question\
where $q/Standards/Standard/Standard=$standard and $q/Departments/Department=$department\
return\
<Question>\
{ $q/Id }\
{ $q/Criteria }\
{ $q/Expectation }\
</Question>', {
standard : this.Evaluate('Standard'),
department : $Xml.Evaluate('Department')
});
this.Sync('Questions/Question', questions, function() {
return this.Evaluate('Id');
});
});Remarks
Synchronization is based on input nodes and performs following actions on specified xpath;
Node comparison done with specified hash function which returns unique identifier of node. If not specified uses the node instance.
Non-existing nodes on input auto created in current node.
Existing nodes in both values are copied.
Non-existing nodes on input are removed from current node. Optionally a list of removed nodes are added on "removedNodes" parameter.
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