package net.sourceforge.phpdt.sql.view.bookmark;

import java.util.Collections;
import java.util.Vector;

import net.sourceforge.phpdt.sql.bookmarks.Bookmark;

public class BookmarkNode extends Bookmark implements TreeNode {
    private Vector children = new Vector();
    
    public BookmarkNode() {
    }

    public BookmarkNode(Bookmark bookmark) {
    	super(bookmark);
    }

	public Object[] getChildren() {
		return children.toArray();
	}

	public Object getParent() {
		return Root.ROOT;
	}

	public boolean hasChildren() {
		if (children != null && children.size() > 0) {
			return true;
		}
		return false;
	}

	public void setChildren(Vector children) {
		for (int i = 0; i <  children.size(); i++) {
			Object obj = children.elementAt(i);
			isValid(obj);
		}
		Collections.sort(children);
		this.children = children;
	}
	
	public void isValid(Object child) {
		boolean valid = false;
		if (child instanceof TableNode ||
		    child instanceof ViewNode ||
		    child instanceof SequenceNode) {
			valid = true;
		}
		if (!valid) {
			throw new RuntimeException("Invalid BookmarkNode child: " + child.getClass().getName());
		}
	}
}