public override Stream Load(Context context)
{
var doc = new XmlDocument();
context.LogInfo("Loading file: {0}", FilePath);
doc.Load(FilePath);
if (null != UpdateXml)
{
foreach (var xpath in UpdateXml)
{
context.LogInfo("Selecting node in document, description: {0}, XPath: {1}", xpath.Description, xpath.XPath);
XPathNavigator xpn = doc.CreateNavigator();
XPathNavigator node = xpn.SelectSingleNode(xpath.XPath);
if (null == node)
{
context.LogError("XPath expression failed to find node");
throw new ApplicationException(String.Format("Node not found: {0}", xpath.Description));
}
if (!string.IsNullOrEmpty(xpath.ContextKey))
{
context.LogInfo("Updating XmlNode with value from context key: {0}", xpath.ContextKey);
node.SetValue(context.GetValue(xpath.ContextKey));
}
else
{
context.LogInfo("Updating XmlNode with value: {0}", xpath.Value);
node.SetValue(xpath.Value);
}
}
}
MemoryStream ms = new MemoryStream();
doc.Save(ms);
ms.Seek(0, SeekOrigin.Begin);
return ms;
}
private void ValidateXPathExpressions(XmlDocument doc, Context context)
{
foreach (XPathDefinition validation in _xPathValidations)
{
var xpathExp = validation.XPath;
var expectedValue = validation.Value;
if (null != validation.Description)
{
context.LogInfo("XPath: {0}", validation.Description);
}
context.LogInfo("Evaluting XPath {0} equals \"{1}\"", xpathExp, expectedValue);
XPathNavigator xpn = doc.CreateNavigator();
object result = xpn.Evaluate(xpathExp);
string actualValue = null;
if (result.GetType().Name == "XPathSelectionIterator")
{
var xpi = result as XPathNodeIterator;
xpi.MoveNext(); // BUGBUG!
actualValue = xpi.Current.ToString();
}
else
{
actualValue = result.ToString();
}
if (!string.IsNullOrEmpty(validation.ContextKey))
{
context.Add(validation.ContextKey, actualValue);
}
if (!string.IsNullOrEmpty(expectedValue))
{
if (0 != expectedValue.CompareTo(actualValue))
{
context.LogError("XPath evaluation failed. Expected:<{0}>. Actual:<{1}>.", expectedValue, actualValue);
throw new ApplicationException(
string.Format("XmlValidationStep failed, compare {0} != {1}, xpath query used: {2}",
expectedValue, actualValue, xpathExp));
}
context.LogInfo("XPath evaluation succeeded. Expected:<{0}>. Actual:<{1}>.", expectedValue, actualValue);
}
}
}