public DBSObjectFilter getNodeFilter(DBXTreeItem meta, boolean firstMatch) {
DBPDataSourceContainer dataSource = getDataSourceContainer();
if (dataSource != null && this instanceof DBNContainer) {
Class<?> childrenClass = this.getChildrenClass(meta);
if (childrenClass != null) {
Object valueObject = getValueObject();
DBSObject parentObject = null;
if (valueObject instanceof DBSObject && !(valueObject instanceof DBPDataSource)) {
parentObject = (DBSObject) valueObject;
}
return dataSource.getObjectFilter(childrenClass, parentObject, firstMatch);
}
}
return null;
}
public void setNodeFilter(DBXTreeItem meta, DBSObjectFilter filter) {
DBPDataSourceContainer dataSource = getDataSourceContainer();
if (dataSource != null && this instanceof DBNContainer) {
Class<?> childrenClass = this.getChildrenClass(meta);
if (childrenClass != null) {
Object parentObject = getValueObject();
if (parentObject instanceof DBPDataSource) {
parentObject = null;
}
dataSource.setObjectFilter(this.getChildrenClass(meta), (DBSObject) parentObject, filter);
dataSource.persistConfiguration();
}
} else {
log.error("No active datasource - can't save filter configuration");
}
}
/**
* Extract items using reflect api
*
* @param monitor progress monitor
* @param meta items meta info
* @param oldList previous child items
* @param toList list ot add new items @return true on success
* @return true on success
* @throws DBException on any DB error
*/
private boolean loadTreeItems(
DBRProgressMonitor monitor,
DBXTreeItem meta,
final DBNDatabaseNode[] oldList,
final List<DBNDatabaseNode> toList)
throws DBException {
if (this.isDisposed()) {
// Property reading can take really long time so this node can be disposed at this moment -
// check it
return false;
}
// Read property using reflection
Object valueObject = getValueObject();
if (valueObject == null) {
return false;
}
String propertyName = meta.getPropertyName();
Object propertyValue = extractPropertyValue(monitor, valueObject, propertyName);
if (propertyValue == null) {
return false;
}
if (!(propertyValue instanceof Collection<?>)) {
log.warn(
"Bad property '"
+ propertyName
+ "' value: "
+ propertyValue.getClass().getName()); // $NON-NLS-1$ //$NON-NLS-2$
return false;
}
DBSObjectFilter filter = getNodeFilter(meta, false);
this.filtered = filter != null && !filter.isEmpty();
Collection<?> itemList = (Collection<?>) propertyValue;
if (itemList.isEmpty()) {
return false;
}
if (this.isDisposed()) {
// Property reading can take really long time so this node can be disposed at this moment -
// check it
return false;
}
DBPDataSourceContainer dataSourceContainer = getDataSourceContainer();
boolean showSystem = dataSourceContainer == null || dataSourceContainer.isShowSystemObjects();
for (Object childItem : itemList) {
if (childItem == null) {
continue;
}
if (!(childItem instanceof DBSObject)) {
log.warn("Bad item type: " + childItem.getClass().getName()); // $NON-NLS-1$
continue;
}
if (DBUtils.isHiddenObject(childItem)) {
// Skip hidden objects
continue;
}
if (!showSystem
&& childItem instanceof DBPSystemObject
&& ((DBPSystemObject) childItem).isSystem()) {
// Skip system objects
continue;
}
if (filter != null && !filter.matches(((DBSObject) childItem).getName())) {
// Doesn't match filter
continue;
}
DBSObject object = (DBSObject) childItem;
boolean added = false;
if (oldList != null) {
// Check that new object is a replacement of old one
for (DBNDatabaseNode oldChild : oldList) {
if (oldChild.getMeta() == meta && equalObjects(oldChild.getObject(), object)) {
oldChild.reloadObject(monitor, object);
if (oldChild.allowsChildren() && !oldChild.needsInitialization()) {
// Refresh children recursive
oldChild.reloadChildren(monitor);
}
getModel().fireNodeUpdate(this, oldChild, DBNEvent.NodeChange.REFRESH);
toList.add(oldChild);
added = true;
break;
}
}
}
if (!added) {
// Simply add new item
DBNDatabaseItem treeItem = new DBNDatabaseItem(this, meta, object, oldList != null);
toList.add(treeItem);
}
}
if (oldList != null) {
// Now remove all non-existing items
for (DBNDatabaseNode oldChild : oldList) {
if (oldChild.getMeta() != meta) {
// Wrong type
continue;
}
boolean found = false;
for (Object childItem : itemList) {
if (childItem instanceof DBSObject
&& equalObjects(oldChild.getObject(), (DBSObject) childItem)) {
found = true;
break;
}
}
if (!found) {
// Remove old child object
oldChild.dispose(true);
}
}
}
return true;
}