public boolean hasChild(Object obj) {
if (obj instanceof UserNode) {
UserNode un = (UserNode) obj;
// check if we have multiple child relations
RelationInfo[] relationInfos = bindingInfo.getNRelationInfos(un);
if (relationInfos != null && relationInfos.length > 0) {
return true;
}
IRecord rec = un.getRecord();
if (rec != null) {
IFoundSet nfs;
String n_relationName = bindingInfo.getNRelationName(un);
String m_relationName = bindingInfo.getMRelationName(un);
nfs = rec.getRelatedFoundSet(n_relationName);
if (nfs != null && nfs.getSize() > 0) {
if (m_relationName == null) {
return true;
} else {
for (int ii = 0; ii < nfs.getSize(); ii++) {
IRecord rel = nfs.getRecord(ii);
IFoundSet mfs = rel.getRelatedFoundSet(m_relationName);
if (mfs != null) {
if (mfs.getSize() > 0) return true;
}
}
}
}
}
} else if (obj instanceof RelationNode) {
RelationNode un = (RelationNode) obj;
UserNode parentUserNode = (UserNode) un.getParent();
IRecord parentRecord = parentUserNode.getRecord();
IFoundSet nfs =
parentRecord.getRelatedFoundSet(((RelationInfo) un.getUserObject()).getNRelationName());
if (nfs != null && nfs.getSize() > 0) {
return true;
}
}
return false;
}
// lazy load
private void internal_lazyLoadChilderenIfNeeded(Object obj) {
if (obj instanceof UserNode) {
UserNode un = (UserNode) obj;
if (!un.isInitialized()) {
un.flagInitialized();
// check if we have multiple child relations
RelationInfo[] relationInfos = bindingInfo.getNRelationInfos(un);
if (relationInfos != null && relationInfos.length > 0) {
int id = 0;
for (RelationInfo relationInfo : relationInfos)
un.add(new RelationNode(id++, relationInfo));
return;
}
IRecord rec = un.getRecord();
if (rec != null) {
IFoundSet nfs;
String n_relationName = bindingInfo.getNRelationName(un);
String m_relationName = bindingInfo.getMRelationName(un);
nfs = rec.getRelatedFoundSet(n_relationName);
if (nfs != null && nfs.getSize() > 0) {
if (m_relationName == null) {
List sortColumns =
getSortColumns(
(Table) ((IFoundSetInternal) nfs).getTable(),
bindingInfo.getChildSortDataprovider(un));
if (sortColumns != null) {
try {
nfs.sort(sortColumns);
} catch (Exception ex) {
Debug.error(ex);
}
}
for (int i = 0; i < nfs.getSize(); i++) {
nfs.getRecord(i); // to force next record loading
createChildNode(un, nfs, i);
}
} else {
ArrayList mfsRecordsSortedIdx = new ArrayList();
ArrayList mfsSorted = new ArrayList();
int sortOrder = SortColumn.ASCENDING;
for (int ii = 0; ii < nfs.getSize(); ii++) {
IRecord rel = nfs.getRecord(ii);
IFoundSet mfs = rel.getRelatedFoundSet(m_relationName);
if (mfs != null) {
for (int i = 0; i < mfs.getSize(); i++) {
IRecord mfsRec = mfs.getRecord(i);
// if sorting add mfs value o right position
List sortColumns =
getSortColumns(
(Table) ((IFoundSetInternal) mfs).getTable(),
bindingInfo.getChildSortDataprovider(un));
if (sortColumns != null) {
SortColumn sortCol = (SortColumn) sortColumns.get(0);
String sortDataProvider = sortCol.getDataProviderID();
sortOrder = sortCol.getSortOrder();
if (mfsRec != null) {
if (mfsRec.getValue(sortDataProvider) != null
&& mfsRec.getValue(sortDataProvider) instanceof Comparable) {
Comparable sMfsRecValue = (Comparable) mfsRec.getValue(sortDataProvider);
Comparable sSortedValue;
int n;
for (n = 0; n < mfsRecordsSortedIdx.size(); n++) {
int nSortedRecIdx = ((Integer) mfsRecordsSortedIdx.get(n)).intValue();
sSortedValue =
(Comparable)
((IFoundSet) mfsSorted.get(n))
.getRecord(nSortedRecIdx)
.getValue(sortDataProvider);
if (sSortedValue == null) continue;
if (sMfsRecValue
.getClass()
.getName()
.equals(sSortedValue.getClass().getName())
&& sMfsRecValue.compareTo(sSortedValue) < 0) {
break;
}
}
mfsRecordsSortedIdx.add(n, new Integer(i));
mfsSorted.add(n, mfs);
} else {
mfsRecordsSortedIdx.add(0, new Integer(i));
mfsSorted.add(0, mfs);
}
}
} else {
mfsRecordsSortedIdx.add(new Integer(i));
mfsSorted.add(mfs);
}
}
}
}
// should be done better
if (sortOrder == SortColumn.ASCENDING) {
for (int i = 0; i < mfsRecordsSortedIdx.size(); i++) {
createChildNode(
(DefaultMutableTreeNode) un,
(IFoundSet) mfsSorted.get(i),
((Integer) mfsRecordsSortedIdx.get(i)).intValue());
}
} else {
for (int i = mfsRecordsSortedIdx.size() - 1; i >= 0; i--) {
createChildNode(
(DefaultMutableTreeNode) un,
(IFoundSet) mfsSorted.get(i),
((Integer) mfsRecordsSortedIdx.get(i)).intValue());
}
}
}
}
}
}
} else if (obj instanceof RelationNode) {
RelationNode un = (RelationNode) obj;
if (!un.isInitialized()) {
un.flagInitialized();
UserNode parentUserNode = (UserNode) un.getParent();
IRecord parentRecord = parentUserNode.getRecord();
IFoundSet nfs =
parentRecord.getRelatedFoundSet(((RelationInfo) un.getUserObject()).getNRelationName());
if (nfs != null && nfs.getSize() > 0) {
for (int i = 0; i < nfs.getSize(); i++) {
createChildNode(un, nfs, i);
nfs.getRecord(i);
}
}
}
}
}