How to create a taxonomy using MDM 5.5 SP05 JAVA API?

Question

Hi ALL,
I have a requirement in which i have to create a taxonomy using MDM 5.5 SP05 JAVA API.
Can anyone tell me how that functionality can be achieved?
Thanks in Advance.
Rajat.

Answer 1

HI, Rajat.
For exposing hierarchy in WD view you need to use node with recursive children in the context and Tree/TreeNodeType UI elements in view layout.
For load hierarchy records you have to use RetrieveLimitedHierTreeCommand. You can load whole hierarchy (as I know, SP05 API have a bug - only first 1000 record can be loaded) or load hierarchy nodes on demand (using OnLoadChildren action of TreeNodeType element).
Refer to this example of loading child records:
// Context structure:
// Tree (model node, model class built from com.sap.mdm.data.Record interface)
//  |-- Children (recursive child node repeating Tree node)
//  |-- DisplayValue (string value attribute, TreeNodeType's text property bound here)
//  |-- HasChildren (boolean value attribute, TreeNodeType's hasChildren property bound here)
// parentElem is element of node Tree or Children for which we must load child records, null for first level of hierarchy
private void fillNodeWithChildren(IPrivateHierarchySelectView.ITreeElement parentElem) {
     // Determining RecordId of parent record and context node to which child records belong
     RecordId parentRecordId = null;
     if (parentElem != null) parentRecordId = parentElem.modelObject().getId();
     IPrivateHierarchySelectView.ITreeNode parentNode =
          parentElem == null
               ? wdContext.nodeTree()
               : parentElem.nodeChildren();
     // Loading children with RetrieveLimitedHierTreeCommand
     try {
          RetrieveLimitedHierTreeCommand retTreeCmd = new RetrieveLimitedHierTreeCommand(...); // use suitable constructor
          if (parentRecordId != null) retTreeCmd.setRootNode(parentRecordId);
          retTreeCmd.setResultDefinition(...); // don't forget set ResultDefinition
          retTreeCmd.execute();
          HierNode subRoot = retTreeCmd.getTree()
          parentNode.invalidate();
          // Processing loaded child records - add elements into parentNode
          if (subRoot == null) return;
          IPrivateHierarchySelectView.ITreeElement childElem;
          HierNode childRecord;
          HierNode[] children = subRoot.getChildren();
          int count = children == null ? 0 : children.length;
          for (int i = 0; i < count; i++) {
               childRecord = children<i>;
               childElem = parentNode.createTreeElement(childRecord);
               childElem.setDisplayValue(childRecord.getDisplayValue());
               childElem.setHasChildren(!childRecord.isLeaf());
               parentNode.addElement(childElem);
          if (parentElem != null) parentElem.setHasChildren(count > 0);
     } catch (/* Some MDM Exceptions */) {}
Don't forget call fillNodeWithChildren(null) in wdDoInit for load first level of hierarchy.