/* Clear all existing nodes from the tree model and rebuild from scratch.
*/
protected void refreshTree() {
DefaultMutableTreeNode propertiesNode;
DefaultMutableTreeNode leaf;
// First clear the existing tree by simply enumerating
// over the root node's children and removing them one by one.
while (treeModel.getChildCount(rootNode) > 0) {
DefaultMutableTreeNode child = (DefaultMutableTreeNode) treeModel.getChild(rootNode, 0);
treeModel.removeNodeFromParent(child);
child.removeAllChildren();
child.removeFromParent();
}
treeModel.nodeStructureChanged(rootNode);
treeModel.reload();
tScrollPane.repaint();
// Now rebuild the tree below its root
try {
// Start by naming the root node from its URL:
rootNode.setUserObject(dMeta.getURL());
// get metadata about user tables by building a vector of table names
String usertables[] = {"TABLE", "GLOBAL TEMPORARY", "VIEW"};
ResultSet result = dMeta.getTables(null, null, null, usertables);
Vector tables = new Vector();
// sqlbob@users Added remarks.
Vector remarks = new Vector();
while (result.next()) {
tables.addElement(result.getString(3));
remarks.addElement(result.getString(5));
}
result.close();
// For each table, build a tree node with interesting info
for (int i = 0; i < tables.size(); i++) {
String name = (String) tables.elementAt(i);
DefaultMutableTreeNode tableNode = makeNode(name, rootNode);
ResultSet col = dMeta.getColumns(null, null, name, null);
// sqlbob@users Added remarks.
String remark = (String) remarks.elementAt(i);
if ((remark != null) && !remark.trim().equals("")) {
makeNode(remark, tableNode);
}
// With a child for each column containing pertinent attributes
while (col.next()) {
String c = col.getString(4);
DefaultMutableTreeNode columnNode = makeNode(c, tableNode);
String type = col.getString(6);
makeNode("Type: " + type, columnNode);
boolean nullable = col.getInt(11) != DatabaseMetaData.columnNoNulls;
makeNode("Nullable: " + nullable, columnNode);
}
col.close();
DefaultMutableTreeNode indexesNode = makeNode("Indices", tableNode);
ResultSet ind = dMeta.getIndexInfo(null, null, name, false, false);
String oldiname = null;
// A child node to contain each index - and its attributes
while (ind.next()) {
DefaultMutableTreeNode indexNode = null;
boolean nonunique = ind.getBoolean(4);
String iname = ind.getString(6);
if ((oldiname == null || !oldiname.equals(iname))) {
indexNode = makeNode(iname, indexesNode);
makeNode("Unique: " + !nonunique, indexNode);
oldiname = iname;
}
// And the ordered column list for index components
makeNode(ind.getString(9), indexNode);
}
ind.close();
}
// Finally - a little additional metadata on this connection
propertiesNode = makeNode("Properties", rootNode);
makeNode("User: "******"ReadOnly: " + cConn.isReadOnly(), propertiesNode);
makeNode("AutoCommit: " + cConn.getAutoCommit(), propertiesNode);
makeNode("Driver: " + dMeta.getDriverName(), propertiesNode);
makeNode("Product: " + dMeta.getDatabaseProductName(), propertiesNode);
makeNode("Version: " + dMeta.getDatabaseProductVersion(), propertiesNode);
} catch (SQLException se) {
propertiesNode = makeNode("Error getting metadata:", rootNode);
makeNode(se.getMessage(), propertiesNode);
makeNode(se.getSQLState(), propertiesNode);
}
treeModel.nodeStructureChanged(rootNode);
treeModel.reload();
tScrollPane.repaint();
}