public void Execute(XPathNavigator input, XmlResolver resolver, XmlArgumentList args, XmlWriter writer) { if (staticContext == null) { throw new XmlQueryException("Query string is not compiled."); } // Initialize event handler method info. xqueryCommandOnMessageEventMethod = null; XQueryContext ctx = new XQueryContext(new XQueryContextManager(staticContext, input, writer, resolver, args)); XPathSequence iter = new SingleItemIterator(input, ctx); foreach (ExprSingle expr in staticContext.QueryBody) { expr.Serialize(iter); } }
public static object FnTrace(XQueryContext ctx, object value, string label) { if (value == null) { return(new XPathEmptySequence(ctx)); } XPathSequence seq = value as XPathSequence; if (seq == null) { XPathAtomicValue av = value as XPathAtomicValue; if (av == null) { av = new XPathAtomicValue(value, InternalPool.GetBuiltInType( InternalPool.XmlTypeCodeFromRuntimeType( value.GetType(), true))); } seq = new SingleItemIterator(av, ctx); } return(new TracingIterator(seq, label)); }
public override object Invoke(XPathSequence current, object [] args) { MethodInfo mi = methods [args.Length] as MethodInfo; if (mi == null) { throw new ArgumentException("The number of custom function parameter does not match with the registered method's signature."); } ParameterInfo [] prms = mi.GetParameters(); // Use Evidence and PermissionSet.Demand() here // before invoking external function. Evidence e = current.Context.StaticContext.Evidence; if (e != null) { SecurityManager.ResolvePolicy(e).Demand(); } Type t = prms.Length > 0 ? prms [0].ParameterType : null; bool ctxSeq = mi.GetCustomAttributes( typeof(XQueryFunctionContextAttribute), false).Length > 0; if (t == typeof(XQueryContext)) { ArrayList pl = new ArrayList(args); pl.Insert(0, current.Context); args = pl.ToArray(); } else if (ctxSeq) { ArrayList pl = new ArrayList(args); pl.Insert(0, current); args = pl.ToArray(); } if (args.Length != prms.Length) { throw new XmlQueryException(String.Format("Argument numbers were different for function {0}. Signature requires {1} while actual call was {2}.", mi.Name, prms.Length, args.Length)); } // If native parameter type is XPathSequence and the actual values are not, adjust them for (int i = 0; i < args.Length; i++) { if (prms [i].ParameterType == typeof(XPathSequence) && !(args [i] is XPathSequence)) { XPathItem item = args [i] as XPathItem; if (item == null) { item = args [i] == null ? null : new XPathAtomicValue(args [i], InternalPool.GetBuiltInType(InternalPool.XmlTypeCodeFromRuntimeType(prms [i].ParameterType, true))); } if (item == null) { args [i] = new XPathEmptySequence(current.Context); } else { args [i] = new SingleItemIterator(item, current.Context); } } } return(mi.Invoke(null, args)); }