static void validateAttributes()

in xmlschema-walker/src/main/java/org/apache/ws/commons/schema/docpath/XmlSchemaElementValidator.java [78:155]
54 lines of code
22 McCabe index (conditional complexity)

    static void validateAttributes(XmlSchemaStateMachineNode state, Attributes attrs,
                                   NamespaceContext nsContext) throws ValidationException {

        if ((state == null) || (attrs == null) || (nsContext == null)
            || !state.getNodeType().equals(XmlSchemaStateMachineNode.Type.ELEMENT)) {
            throw new ValidationException("None of state, attrs, or nsContext can be null, and state must"
                                          + " be of an SchemaStateMachineNode.Type.ELEMENT node, not "
                                          + ((state == null) ? null : state.getNodeType()));
        }

        final List<XmlSchemaAttrInfo> attributes = state.getAttributes();

        if ((attributes == null) || attributes.isEmpty()) {
            // Nothing to validate.
            return;
        }

        final QName elemQName = state.getElement().getQName();

        for (XmlSchemaAttrInfo attribute : attributes) {
            final XmlSchemaAttribute xmlSchemaAttr = attribute.getAttribute();
            final QName attrQName = xmlSchemaAttr.getQName();
            final XmlSchemaUse use = xmlSchemaAttr.getUse();

            String value = attrs.getValue(attrQName.getNamespaceURI(), attrQName.getLocalPart());

            if (value == null) {
                // A namespace is not always available.
                value = attrs.getValue("", attrQName.getLocalPart());
            }

            if (value != null) {
                value = value.trim();
            }

            // Confirm the attribute is used correctly.
            switch (use) {
            case OPTIONAL:
                break;
            case PROHIBITED:
                if ((value != null) && (value.length() > 0)) {
                    throw new ValidationException("Attribute " + attrQName + " was declared 'prohibited' by "
                                                  + elemQName + " and cannot have a value.");
                }
                break;
            case REQUIRED:
                if ((value == null) || (value.length() == 0)) {
                    throw new ValidationException("Attribute " + attrQName + " was declared 'required' by "
                                                  + elemQName + " and must have a value.");
                }
                break;
            case NONE:
                /*
                 * An attribute with no usage is optional, which was already
                 * taken care of by XmlSchemaWalker.
                 */
            default:
                throw new ValidationException("Attribute " + attrQName + " of element " + elemQName
                                              + " has an unrecognized usage of " + use + ".");
            }

            /*
             * If the value is null or empty there is no further validation we
             * can perform here.
             */
            if ((value == null) || (value.length() == 0)) {
                continue;
            }

            if (attribute.getType().getType().equals(XmlSchemaTypeInfo.Type.COMPLEX)) {

                throw new ValidationException("Attribute " + attrQName + " of element " + elemQName
                                              + " cannot have a COMPLEX type.");
            }

            validateType("Attribute " + attrQName + " of " + elemQName, value, attribute.getType(), nsContext);
        }
    }