Example usage for javax.xml.crypto.dsig Transform XPATH

Introduction

In this page you can find the example usage for javax.xml.crypto.dsig Transform XPATH.

Prototype

String XPATH

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Document

The <a href="http://www.w3.org/TR/1999/REC-xpath-19991116">XPath</a> transform algorithm URI.

Usage

From source file:org.apache.jcp.xml.dsig.internal.dom.DOMXMLSignature.java

private void digestReference(DOMReference ref, XMLSignContext signContext) throws XMLSignatureException {
    if (ref.isDigested()) {
        return;/*from w w  w . j ava2 s.c  o  m*/
    }
    // check dependencies
    String uri = ref.getURI();
    if (Utils.sameDocumentURI(uri)) {
        String id = Utils.parseIdFromSameDocumentURI(uri);
        if (id != null && signatureIdMap.containsKey(id)) {
            XMLStructure xs = signatureIdMap.get(id);
            if (xs instanceof DOMReference) {
                digestReference((DOMReference) xs, signContext);
            } else if (xs instanceof Manifest) {
                Manifest man = (Manifest) xs;
                List manRefs = man.getReferences();
                for (int i = 0, size = manRefs.size(); i < size; i++) {
                    digestReference((DOMReference) manRefs.get(i), signContext);
                }
            }
        }
        // if uri="" and there are XPath Transforms, there may be
        // reference dependencies in the XPath Transform - so be on
        // the safe side, and skip and do at end in the final sweep
        if (uri.length() == 0) {
            @SuppressWarnings("unchecked")
            List<Transform> transforms = ref.getTransforms();
            for (Transform transform : transforms) {
                String transformAlg = transform.getAlgorithm();
                if (transformAlg.equals(Transform.XPATH) || transformAlg.equals(Transform.XPATH2)) {
                    return;
                }
            }
        }
    }
    ref.digest(signContext);
}

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