schemadomparser.java

来自「JAVA的一些源码 JAVA2 STANDARD EDITION DEVELO」· Java 代码 · 共 414 行 · 第 1/2 页

                    // report an error
                    fErrorReporter.reportError(XSMessageFormatter.SCHEMA_DOMAIN,
                                               "s4s-elt-character",
                                               new Object[]{txt},
                                               XMLErrorReporter.SEVERITY_ERROR);
                    break;
                }
            }
            // don't call super.characters() when it's not within one of the 2
            // annotation elements: the traversers ignore them anyway. We can
            // save time/memory creating the text nodes.
        }
        // when it's within either of the 2 elements, characters are allowed
        // and we need to store them.
        else {
            schemaDOM.characters(text);
        }

    }


    /**
     * The start of an element.
     * 
     * @param element    The name of the element.
     * @param attributes The element attributes.
     * @param augs       Additional information that may include infoset augmentations
     *                   
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void startElement(QName element, XMLAttributes attributes, Augmentations augs)
        throws XNIException {

        fDepth++;
        // while it is true that non-whitespace character data
        // may only occur in appInfo or documentation
        // elements, it's certainly legal for comments and PI's to
        // occur as children of annotation; we need
        // to account for these here.
        if (fAnnotationDepth == -1) {
            if (element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA &&
                    element.localpart == SchemaSymbols.ELT_ANNOTATION) {
                fAnnotationDepth = fDepth;
                schemaDOM.startAnnotation(element, attributes, fNamespaceContext);
            } 
        } else if(fDepth == fAnnotationDepth+1) {
            fInnerAnnotationDepth = fDepth;
            schemaDOM.startAnnotationElement(element, attributes);
        } else {
            schemaDOM.startAnnotationElement(element, attributes);
            // avoid falling through; don't call startElement in this case
            return;
        }
        schemaDOM.startElement(element, attributes, 
                               fLocator.getLineNumber(),
                               fLocator.getColumnNumber());

    }


    /**
     * An empty element.
     * 
     * @param element    The name of the element.
     * @param attributes The element attributes.
     * @param augs       Additional information that may include infoset augmentations
     *                   
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs)
        throws XNIException {
        // the order of events that occurs here is:
        //   schemaDOM.startAnnotation/startAnnotationElement (if applicable)
        //   schemaDOM.emptyElement  (basically the same as startElement then endElement)
        //   schemaDOM.endAnnotationElement (if applicable)
        // the order of events that would occur if this was <element></element>:
        //   schemaDOM.startAnnotation/startAnnotationElement (if applicable)
        //   schemaDOM.startElement
        //   schemaDOM.endAnnotationElement (if applicable)
        //   schemaDOM.endElementElement
        // Thus, we can see that the order of events isn't the same.  However, it doesn't
        // seem to matter.  -- PJM
        if (fAnnotationDepth == -1) {
            // this is messed up, but a case to consider:
            if (element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA &&
                    element.localpart == SchemaSymbols.ELT_ANNOTATION) {
                schemaDOM.startAnnotation(element, attributes, fNamespaceContext);
            }
        } else {
            schemaDOM.startAnnotationElement(element, attributes);
        }
        
        schemaDOM.emptyElement(element, attributes, 
                               fLocator.getLineNumber(),
                               fLocator.getColumnNumber());
        
        if (fAnnotationDepth == -1) {
            // this is messed up, but a case to consider:
            if (element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA &&
                    element.localpart == SchemaSymbols.ELT_ANNOTATION) {
                schemaDOM.endAnnotationElement(element, true);
            }
        } else {
            schemaDOM.endAnnotationElement(element, false);
        } 
    }


    /**
     * The end of an element.
     * 
     * @param element The name of the element.
     * @param augs    Additional information that may include infoset augmentations
     *                
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void endElement(QName element, Augmentations augs) throws XNIException {

        // when we reach the endElement of xs:appinfo or xs:documentation,
        // change fInnerAnnotationDepth to -1
        if(fAnnotationDepth > -1) {
            if (fInnerAnnotationDepth == fDepth) {
                fInnerAnnotationDepth = -1;
                schemaDOM.endAnnotationElement(element, false);
                schemaDOM.endElement();
            } else if (fAnnotationDepth == fDepth) {
                fAnnotationDepth = -1;
                schemaDOM.endAnnotationElement(element, true);
                schemaDOM.endElement();
            } else { // inside a child of annotation
                schemaDOM.endAnnotationElement(element, false);
            }
        } else { // not in an annotation at all
            schemaDOM.endElement();
        }
        fDepth--;

    }
    
    /**
     * Ignorable whitespace. For this method to be called, the document
     * source must have some way of determining that the text containing
     * only whitespace characters should be considered ignorable. For
     * example, the validator can determine if a length of whitespace
     * characters in the document are ignorable based on the element
     * content model.
     * 
     * @param text   The ignorable whitespace.
     * @param augs   Additional information that may include infoset augmentations
     *               
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
        // unlikely to be called, but you never know...
        if (fAnnotationDepth != -1 ) {
            schemaDOM.characters(text);
        }
    }

    /**
     * The start of a CDATA section.
     * 
     * @param augs   Additional information that may include infoset augmentations
     *               
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void startCDATA(Augmentations augs) throws XNIException {
        // only deal with CDATA boundaries within an annotation.
        if (fAnnotationDepth != -1) {
            schemaDOM.startAnnotationCDATA();
        }
    }

    /**
     * The end of a CDATA section.
     * 
     * @param augs   Additional information that may include infoset augmentations
     *               
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void endCDATA(Augmentations augs) throws XNIException {
        // only deal with CDATA boundaries within an annotation.
        if (fAnnotationDepth != -1) {
            schemaDOM.endAnnotationCDATA();
        }
    }

    
    //
    // other methods
    //
    
    /**
     * Returns the DOM document object.
     */
    public Document getDocument() {
        return schemaDOM;
    }

}