public static void Mutate(this IBaseMessage pInMsg,
Dictionary <string, Func <string, string> > xPathToMutatorMap)
{
var xPathCollection = new XPathCollection();
foreach (var xPath in xPathToMutatorMap.Keys)
{
xPathCollection.Add(xPath);
}
Stream inboundStream = pInMsg.BodyPart.GetOriginalDataStream();
var virtualStream = new VirtualStream(inboundStream);
ValueMutator valueMutator = delegate(int matchIdx, XPathExpression matchExpr,
string origVal, ref string finalVal)
{
var mutator = xPathToMutatorMap[matchExpr.XPath];
finalVal = mutator(origVal);
};
var xPathMutatorStream = new XPathMutatorStream(virtualStream, xPathCollection, valueMutator);
pInMsg.BodyPart.Data = xPathMutatorStream;
}
/// <summary>
/// Synchronously executes the task using the specified <see cref="RuntimeTaskExecutionContext"/> execution context object.
/// </summary>
/// <param name="context">The execution context.</param>
public override void Run(RuntimeTaskExecutionContext context)
{
string propName, propNamespace;
// Check if there are any properties with values to be promoted.
if (this.propertyToValueMap.Count > 0)
{
foreach (var property in this.propertyToValueMap)
{
if (TryParsePropertyName(property.Key, out propName, out propNamespace))
{
#if DEBUG
TraceManager.CustomComponent.TraceDetails("DETAIL: Context property promoted: {0}{1}{2} = {3}", propNamespace, BizTalkUtility.ContextPropertyNameSeparator, propName, property.Value);
#endif
context.Message.Context.Promote(propName, propNamespace, property.Value);
}
}
}
// Check if there are any properties to be promoted by inspecting the incoming message and capturing property values using XPath.
if (this.propertyToXPathMap.Count > 0)
{
Stream messageDataStream = BizTalkUtility.EnsureSeekableStream(context.Message, context.PipelineContext);
if (messageDataStream != null)
{
byte[] buffer = new byte[BizTalkUtility.VirtualStreamBufferSize];
string[] propValues = new string[this.propertyToXPathMap.Count];
int arrIndex = 0, matchFound = 0;
XPathCollection xc = new XPathCollection();
XPathQueryLibrary xPathLib = ApplicationConfiguration.Current.XPathQueries;
foreach (var property in this.propertyToXPathMap)
{
propValues[arrIndex++] = property.Key;
xc.Add(xPathLib.GetXPathQuery(property.Value));
}
try
{
XPathMutatorStream mutator = new XPathMutatorStream(messageDataStream, xc,
delegate(int matchIdx, XPathExpression expr, string origValue, ref string finalValue)
{
if (matchIdx >= 0 && matchIdx < propValues.Length)
{
if (TryParsePropertyName(propValues[matchIdx], out propName, out propNamespace))
{
#if DEBUG
TraceManager.CustomComponent.TraceDetails("DETAIL: Context property promoted: {0}{1}{2} = {3}", propNamespace, BizTalkUtility.ContextPropertyNameSeparator, propName, origValue);
#endif
context.Message.Context.Promote(propName, propNamespace, origValue);
}
matchFound++;
}
});
while (mutator.Read(buffer, 0, buffer.Length) > 0 && matchFound < propValues.Length)
{
;
}
}
finally
{
if (messageDataStream.CanSeek)
{
messageDataStream.Seek(0, SeekOrigin.Begin);
}
}
}
}
}
/// <summary>
/// Synchronously executes the task using the specified <see cref="RuntimeTaskExecutionContext"/> execution context object.
/// </summary>
/// <param name="context">The execution context.</param>
public override void Run(RuntimeTaskExecutionContext context)
{
if (this.lateBoundActivityValueMap.Count > 0)
{
foreach (var dateTimeMilestone in this.lateBoundActivityValueMap.Where((item) => { return(item.Value == typeof(DateTime)); }))
{
SetActivityData(dateTimeMilestone.Key, DateTime.UtcNow);
}
}
if (this.milestoneToXPathMap.Count > 0)
{
Stream messageDataStream = BizTalkUtility.EnsureSeekableStream(context.Message, context.PipelineContext);
if (messageDataStream != null)
{
byte[] buffer = new byte[BizTalkUtility.VirtualStreamBufferSize];
string[] milestones = new string[this.milestoneToXPathMap.Count];
int arrIndex = 0, matchFound = 0;
XPathCollection xc = new XPathCollection();
XPathQueryLibrary xPathLib = ApplicationConfiguration.Current.XPathQueries;
foreach (var listItem in this.milestoneToXPathMap)
{
milestones[arrIndex++] = listItem.Key;
xc.Add(xPathLib.GetXPathQuery(listItem.Value));
}
try
{
XPathMutatorStream mutator = new XPathMutatorStream(messageDataStream, xc,
delegate(int matchIdx, XPathExpression expr, string origValue, ref string finalValue)
{
if (matchIdx >= 0 && matchIdx < milestones.Length)
{
SetActivityData(milestones[matchIdx], origValue);
matchFound++;
}
});
while (mutator.Read(buffer, 0, buffer.Length) > 0 && matchFound < milestones.Length)
{
;
}
// Check we had performed continuation token value resolution via XPath.
object continuationToken = null;
if (CurrentActivity.ActivityData.TryGetValue(ContinuationTokenInternalDataItemName, out continuationToken))
{
CurrentActivity.ContinuationToken = (string)continuationToken;
CurrentActivity.ActivityData.Remove(ContinuationTokenInternalDataItemName);
}
}
finally
{
if (messageDataStream.CanSeek)
{
messageDataStream.Seek(0, SeekOrigin.Begin);
}
}
}
}
}
