Esempio n. 1
0
        //  Merges the tree of Elements whose root is <code>childElement</code>
        //  underneath the <code>parentElement</code>.
        //
        //  If the <code>parentElement</code> already has an element that matches
        //  the <code>childElement</code>, then recursively attaches the
        //  grandchildren instead.
        //
        //  The element returned will be either the supplied
        //  <code>childElement</code>, or an existing child element if one already
        //  existed under <code>parentElement</code>.

        private static XElement MergeTree(XElement parentElement, XElement childElement)
        {
            var childElementOid = NofMetaModel.GetAttribute(childElement, "oid");

            if (childElementOid != null)
            {
                // before we add the child element, check to see if it is already
                // there
                var existingChildElements = ElementsUnder(parentElement, childElement.Name.LocalName);
                foreach (var possibleMatchingElement in existingChildElements)
                {
                    var possibleMatchOid = NofMetaModel.GetAttribute(possibleMatchingElement, "oid");
                    if (possibleMatchOid == null || !possibleMatchOid.Equals(childElementOid))
                    {
                        continue;
                    }

                    // match: transfer the children of the child (grandchildren) to the
                    // already existing matching child
                    var existingChildElement  = possibleMatchingElement;
                    var grandchildrenElements = ElementsUnder(childElement, "*");
                    foreach (var grandchildElement in grandchildrenElements)
                    {
                        grandchildElement.Remove();

                        MergeTree(existingChildElement, grandchildElement);
                    }

                    return(existingChildElement);
                }
            }

            parentElement.Add(childElement);
            return(childElement);
        }
Esempio n. 2
0
        //  Merges the tree of Elements whose root is <code>childElement</code>
        //  underneath the <code>parentElement</code>.
        //
        //  If the <code>parentElement</code> already has an element that matches
        //  the <code>childElement</code>, then recursively attaches the
        //  grandchildren instead.
        //
        //  The element returned will be either the supplied
        //  <code>childElement</code>, or an existing child element if one already
        //  existed under <code>parentElement</code>.

        private static XElement MergeTree(XElement parentElement, XElement childElement)
        {
            Log.Debug("mergeTree(" + DoLog("parent", parentElement) + AndLog("child", childElement));

            string childElementOid = NofMetaModel.GetAttribute(childElement, "oid");

            Log.Debug("mergeTree(El,El): " + DoLog("childOid", childElementOid));
            if (childElementOid != null)
            {
                // before we add the child element, check to see if it is already
                // there
                Log.Debug("mergeTree(El,El): check if child already there");
                IEnumerable <XElement> existingChildElements = ElementsUnder(parentElement, childElement.Name.LocalName);
                foreach (XElement possibleMatchingElement in existingChildElements)
                {
                    string possibleMatchOid = NofMetaModel.GetAttribute(possibleMatchingElement, "oid");
                    if (possibleMatchOid == null || !possibleMatchOid.Equals(childElementOid))
                    {
                        continue;
                    }

                    Log.Debug("mergeTree(El,El): child already there; merging grandchildren");

                    // match: transfer the children of the child (grandchildren) to the
                    // already existing matching child
                    XElement existingChildElement = possibleMatchingElement;
                    IEnumerable <XElement> grandchildrenElements = ElementsUnder(childElement, "*");
                    foreach (XElement grandchildElement in grandchildrenElements)
                    {
                        grandchildElement.Remove();

                        Log.Debug("mergeTree(El,El): merging " + DoLog("grandchild", grandchildElement));

                        MergeTree(existingChildElement, grandchildElement);
                    }
                    return(existingChildElement);
                }
            }

            parentElement.Add(childElement);
            return(childElement);
        }