@Override
public void characters(char buf[], int offset, int length) {
if (current != null) {
Node n = doc.createTextNode(new String(buf, offset, length));
n.setUserData(LINE_NUMBER_KEY_NAME, this.locator.getLineNumber(), null);
current.appendChild(n);
}
}
public void add(Object o) {
Node novo = (Node) o; // Node é uma interface
if (cabeca == null) {
cabeca = novo;
calda = cabeca;
} else {
calda.setUserData(null, novo, null); // calda.setProximo(novo);
calda = calda.getNextSibling(); // calda = calda.getProximo();
}
}
/** 将一个DOM结点封装成XmlNode, 对同一个DOM结点, 当调用此方法时每次 都返回同一个XmlNode实例. */
public static XmlNode valueOf(Node dom) {
if (dom == null) {
return null;
} else {
XmlNode node = (XmlNode) dom.getUserData(XML_NODE_KEY);
if (node == null) {
node = new RealNode(dom);
dom.setUserData(XML_NODE_KEY, node, null);
}
return node;
}
}
private static void setUserData(Node node, XmlNode wrap) {
if (DOM_LEVEL_3) {
node.setUserData(USER_DATA_XMLNODE_KEY, wrap, wrap.events);
}
}
/**
* Evaluate expression and return opaque type
*
* @param cexp cexp
* @param ctx ctx
* @param type type
* @return type
* @throws FaultException FaultException
* @throws EvaluationException EvaluationException
*/
private Object evaluate(OExpression cexp, EvaluationContext ctx, QName type)
throws FaultException, EvaluationException {
try {
OXQuery10ExpressionBPEL20 oxquery10 = ((OXQuery10ExpressionBPEL20) cexp);
XQDataSource xqds = new SaxonXQDataSource();
XQConnection xqconn = xqds.getConnection();
Configuration configuration = ((SaxonXQConnection) xqconn).getConfiguration();
configuration.setAllNodesUntyped(true);
configuration.setHostLanguage(Configuration.XQUERY);
XQStaticContext staticEnv = xqconn.getStaticContext();
NSContext nsContext = oxquery10.getNamespaceCtx();
Set<String> prefixes = nsContext.getPrefixes();
for (String prefix : prefixes) {
String uri = nsContext.getNamespaceURI(prefix);
staticEnv.declareNamespace(prefix, uri);
}
configuration.setSchemaValidationMode(Validation.SKIP);
xqconn.setStaticContext(staticEnv);
// Prepare expression, for starters
String xquery =
oxquery10
.getXquery()
.replaceFirst(
Constants.XQUERY_FUNCTION_HANDLER_COMPILER,
Constants.XQUERY_FUNCTION_HANDLER_RUNTIME);
XQPreparedExpression exp = xqconn.prepareExpression(xquery);
JaxpFunctionResolver funcResolver = new JaxpFunctionResolver(ctx, oxquery10);
JaxpVariableResolver variableResolver =
new JaxpVariableResolver(ctx, oxquery10, configuration);
// Bind external variables to runtime values
for (QName variable : exp.getAllUnboundExternalVariables()) {
// Evaluate referenced variable
Object value = variableResolver.resolveVariable(variable);
if (value instanceof Value) {
SaxonXQConnection saxonConn = (SaxonXQConnection) xqconn;
try {
Item item = ((Value) value).asItem();
if (item == null) {
exp.bindSequence(variable, xqconn.createSequence(Collections.EMPTY_LIST.iterator()));
} else {
XQItem item2 = new SaxonXQItem(item, saxonConn);
exp.bindItem(variable, item2);
}
} catch (XPathException e) {
__log.warn("", e);
}
} else {
if (value instanceof Date) {
Date d = (Date) value;
value = org.apache.ode.utils.ISO8601DateParser.format(d);
}
// Figure out type of variable
XQSequenceType xqType = getItemType(xqconn, value);
// Saxon doesn't like binding sequences to variables
if (value instanceof Node) {
// a node is a node-list, but the inverse isn't true.
// so, if the value is truly a node, leave it alone.
} else if (value instanceof NodeList) {
// So extract the first item from the node list
NodeList nodeList = (NodeList) value;
ArrayList nodeArray = new ArrayList();
for (int i = 0; i < nodeList.getLength(); i++) {
nodeArray.add(nodeList.item(i));
}
value = xqconn.createSequence(nodeArray.iterator());
}
// Bind value with external variable
if (value != null && xqType != null) {
if (value instanceof XQSequence) {
exp.bindSequence(variable, (XQSequence) value);
} else {
if (xqType instanceof XQItemType) {
exp.bindObject(variable, value, (XQItemType) xqType);
}
}
}
}
}
// Set context node
Node contextNode = (ctx.getRootNode() == null) ? DOMUtils.newDocument() : ctx.getRootNode();
contextNode.setUserData(
XQuery10BpelFunctions.USER_DATA_KEY_FUNCTION_RESOLVER, funcResolver, null);
exp.bindItem(
XQConstants.CONTEXT_ITEM,
xqconn.createItemFromNode(contextNode, xqconn.createNodeType()));
// Execute query
XQResultSequence result = exp.executeQuery();
// Cast Saxon result to Java result
Object evalResult = getResultValue(type, result);
if ((evalResult != null) && __log.isDebugEnabled()) {
__log.debug(
"Expression "
+ cexp.toString()
+ " generated result "
+ evalResult
+ " - type="
+ evalResult.getClass().getName());
if (ctx.getRootNode() != null) {
__log.debug("Was using context node " + DOMUtils.domToString(ctx.getRootNode()));
}
}
return evalResult;
} catch (XQException xqe) {
// Extracting the real cause from all this wrapping isn't a simple task
Throwable cause = (xqe.getCause() != null) ? xqe.getCause() : xqe;
if (cause instanceof DynamicError) {
Throwable th = ((DynamicError) cause).getException();
if (th != null) {
cause = th;
if (cause.getCause() != null) {
cause = cause.getCause();
}
}
}
throw new EvaluationException(
"Error while executing an XQuery expression: " + cause.toString(), cause);
} catch (WrappedResolverException wre) {
__log.debug("Could not evaluate expression because of ", wre);
throw (FaultException) wre.getCause();
}
}
