Xml.Sync

Overview

Array<Xml> myXml.Sync(xpath: string, input: Array<Xml>, hash: (node: Xml) => string)

Array<Xml> myXml.Sync(xpath: string, input: Array<Xml>, hash: (node: Xml) => string, removedNodes: Array<Xml>)

Arguments

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.