org.w3c.dom.traversal.NodeFilter#SHOW_COMMENT源码实例Demo

/**
 * Given a {@link Node}, return the appropriate constant for whatToShow.
 *
 * @param node the node
 * @return the whatToShow constant for the type of specified node
 */
static int getFlagForNode(final Node node) {
    switch (node.getNodeType()) {
        case Node.ELEMENT_NODE:
            return NodeFilter.SHOW_ELEMENT;
        case Node.ATTRIBUTE_NODE:
            return NodeFilter.SHOW_ATTRIBUTE;
        case Node.TEXT_NODE:
            return NodeFilter.SHOW_TEXT;
        case Node.CDATA_SECTION_NODE:
            return NodeFilter.SHOW_CDATA_SECTION;
        case Node.ENTITY_REFERENCE_NODE:
            return NodeFilter.SHOW_ENTITY_REFERENCE;
        case Node.ENTITY_NODE:
            return NodeFilter.SHOW_ENTITY;
        case Node.PROCESSING_INSTRUCTION_NODE:
            return NodeFilter.SHOW_PROCESSING_INSTRUCTION;
        case Node.COMMENT_NODE:
            return NodeFilter.SHOW_COMMENT;
        case Node.DOCUMENT_NODE:
            return NodeFilter.SHOW_DOCUMENT;
        case Node.DOCUMENT_TYPE_NODE:
            return NodeFilter.SHOW_DOCUMENT_TYPE;
        case Node.DOCUMENT_FRAGMENT_NODE:
            return NodeFilter.SHOW_DOCUMENT_FRAGMENT;
        case Node.NOTATION_NODE:
            return NodeFilter.SHOW_NOTATION;
        default:
            return 0;
    }
}
 

/**
 * Given a {@link Node}, return the appropriate constant for whatToShow.
 *
 * @param node the node
 * @return the whatToShow constant for the type of specified node
 */
static int getFlagForNode(final Node node) {
    switch (node.getNodeType()) {
        case Node.ELEMENT_NODE:
            return NodeFilter.SHOW_ELEMENT;
        case Node.ATTRIBUTE_NODE:
            return NodeFilter.SHOW_ATTRIBUTE;
        case Node.TEXT_NODE:
            return NodeFilter.SHOW_TEXT;
        case Node.CDATA_SECTION_NODE:
            return NodeFilter.SHOW_CDATA_SECTION;
        case Node.ENTITY_REFERENCE_NODE:
            return NodeFilter.SHOW_ENTITY_REFERENCE;
        case Node.ENTITY_NODE:
            return NodeFilter.SHOW_ENTITY;
        case Node.PROCESSING_INSTRUCTION_NODE:
            return NodeFilter.SHOW_PROCESSING_INSTRUCTION;
        case Node.COMMENT_NODE:
            return NodeFilter.SHOW_COMMENT;
        case Node.DOCUMENT_NODE:
            return NodeFilter.SHOW_DOCUMENT;
        case Node.DOCUMENT_TYPE_NODE:
            return NodeFilter.SHOW_DOCUMENT_TYPE;
        case Node.DOCUMENT_FRAGMENT_NODE:
            return NodeFilter.SHOW_DOCUMENT_FRAGMENT;
        case Node.NOTATION_NODE:
            return NodeFilter.SHOW_NOTATION;
        default:
            return 0;
    }
}