Examples of org.w3c.dom.DOMException

org.w3c.dom.DOMException
DOM operations only raise exceptions in "exceptional" circumstances, i.e., when an operation is impossible to perform (either for logical reasons, because data is lost, or because the implementation has become unstable). In general, DOM methods return specific error values in ordinary processing situations, such as out-of-bound errors when using NodeList .
Implementations may raise other exceptions under other circumstances. For example, implementations may raise an implementation-dependent exception if a null argument is passed.
Some languages and object systems do not support the concept of exceptions. For such systems, error conditions may be indicated using native error reporting mechanisms. For some bindings, for example, methods may return error codes similar to those listed in the corresponding method descriptions.

        return range;
    }
    
    public String toString(){
      if( fDetach) {
        throw new DOMException(
        DOMException.INVALID_STATE_ERR, 
                DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_STATE_ERR", null));
      }


      Node node = fStartContainer;

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      return sb.toString();
    }
    
    public void detach() {
        if( fDetach) {
            throw new DOMException(
            DOMException.INVALID_STATE_ERR, 
                DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_STATE_ERR", null));
        }        
        fDetach = true;
        fDocument.removeRange(this);

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            return null; // REVIST: Throw exception?
        }
        
        //Check for a detached range.
        if( fDetach) {
            throw new DOMException(
                DOMException.INVALID_STATE_ERR, 
                DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_STATE_ERR", null));
        }


        /*

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            return n.cloneNode( true );
        case EXTRACT_CONTENTS:
            if ( n.getNodeType()==Node.DOCUMENT_TYPE_NODE )
            {
                // TBD: This should be a HIERARCHY_REQUEST_ERR
                throw new DOMException(
                        DOMException.HIERARCHY_REQUEST_ERR, 
                DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "HIERARCHY_REQUEST_ERR", null));
            }
            return n;
        case DELETE_CONTENTS:

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    }


    void checkIndex(Node refNode, int offset) throws DOMException
    {
        if (offset < 0) {
            throw new DOMException(
                DOMException.INDEX_SIZE_ERR, 
                DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INDEX_SIZE_ERR", null));
      }


        int type = refNode.getNodeType();
        
        // If the node contains text, ensure that the
        // offset of the range is <= to the length of the text
        if (type == Node.TEXT_NODE
            || type == Node.CDATA_SECTION_NODE
            || type == Node.COMMENT_NODE
            || type == Node.PROCESSING_INSTRUCTION_NODE) {
            if (offset > refNode.getNodeValue().length()) {
                throw new DOMException(DOMException.INDEX_SIZE_ERR, 
                DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INDEX_SIZE_ERR", null));
            }
        }
        else {
            // Since the node is not text, ensure that the offset
            // is valid with respect to the number of child nodes
            if (offset > refNode.getChildNodes().getLength()) {
        throw new DOMException(DOMException.INDEX_SIZE_ERR, 
                DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INDEX_SIZE_ERR", null));
            }
        }
    }

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                                           boolean entityReferenceExpansion)
    {
        
        if (root == null) {
                  String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
                  throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
        }


        NodeIterator iterator = new NodeIteratorImpl(this,
                                                     root,
                                                     whatToShow,

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                                       NodeFilter filter,
                                       boolean entityReferenceExpansion)
    {
      if (root == null) {
            String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
            throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
        }
        return new TreeWalkerImpl(root, whatToShow, filter,
                                  entityReferenceExpansion);
    }

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      if (type.equalsIgnoreCase("MutationEvents") ||
                "MutationEvent".equals(type))
          return new MutationEventImpl();
      else {
            String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_SUPPORTED_ERR", null);
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
        }
  }

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            if (errorChecking) {
                for (Node kid = newChild.getFirstChild(); // Prescan
                     kid != null; kid = kid.getNextSibling()) {


                    if (!ownerDocument.isKidOK(this, kid)) {
                        throw new DOMException(
                              DOMException.HIERARCHY_REQUEST_ERR, 
                              DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "HIERARCHY_REQUEST_ERR", null));
                    }
                }
            }


            while (newChild.hasChildNodes()) {
                insertBefore(newChild.getFirstChild(), refChild);
            }
            return newChild;
        }


        if (newChild == refChild) {
            // stupid case that must be handled as a no-op triggering events...
            refChild = refChild.getNextSibling();
            removeChild(newChild);
            insertBefore(newChild, refChild);
            return newChild;
        }


        if (needsSyncChildren()) {
            synchronizeChildren();
        }


        if (errorChecking) {
            if (isReadOnly()) {
                throw new DOMException(
                              DOMException.NO_MODIFICATION_ALLOWED_ERR, 
                              DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null));
            }
            if (newChild.getOwnerDocument() != ownerDocument && newChild != ownerDocument) {
                throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, 
                            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null));
            }
            if (!ownerDocument.isKidOK(this, newChild)) {
                throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 
                            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "HIERARCHY_REQUEST_ERR", null));
            }
            // refChild must be a child of this node (or null)
            if (refChild != null && refChild.getParentNode() != this) {
                throw new DOMException(DOMException.NOT_FOUND_ERR,
                            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_FOUND_ERR", null));
            }


            // Prevent cycles in the tree
            // newChild cannot be ancestor of this Node,
            // and actually cannot be this
            boolean treeSafe = true;
            for (NodeImpl a = this; treeSafe && a != null; a = a.parentNode())
            {
                treeSafe = newChild != a;
            }
            if(!treeSafe) {
                throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 
                            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "HIERARCHY_REQUEST_ERR", null));
            }
        }


        // notify document

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        throws DOMException {


        CoreDocumentImpl ownerDocument = ownerDocument();
        if (ownerDocument.errorChecking) {
            if (isReadOnly()) {
                throw new DOMException(
                            DOMException.NO_MODIFICATION_ALLOWED_ERR, 
                            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null));
            }
            if (oldChild != null && oldChild.getParentNode() != this) {
                throw new DOMException(DOMException.NOT_FOUND_ERR, 
                            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NOT_FOUND_ERR", null));
            }
        }


        ChildNode oldInternal = (ChildNode) oldChild;

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