/// <summary>
/// Parses an object from <paramref name="r"/> using <paramref name="a"/> to locate
/// a suitable class definition to populate.
/// </summary>
/// <param name="r">The <see cref="T:System.Xml.XmlReader"/> from which to parse the object</param>
/// <param name="a"><paramref name="s"/> in object form</param>
/// <returns>A <see cref="MARC.Everest.Formatters.XML.ITS1.Its1FormatterParseResult"/> containing the results of the parse</returns>
/// <remarks>
/// <para>This method differs from the <seealso cref="F:Parse(System.Xml.XmlReader)"/> method in that it
/// will only look within the specified assembly for a suitable class to populate.</para>
/// <para>
/// This method will not check the current learned type repository for a class to serialize (ie: it will always
/// check the assembly regardless of what has been formatted prior)
/// </para>
/// </remarks>
public IFormatterParseResult Parse(XmlReader r, Assembly a)
{
ThrowIfDisposed();
var resultContext = new XmlIts1FormatterParseResult(ResultCode.Accepted, null);
if (!(r is XmlStateReader))
r = new XmlStateReader(r);
// Initial state
if (r.ReadState == ReadState.Initial)
while (r.NodeType != XmlNodeType.Element)
r.Read();
// Detect if we can parse this...
//if (r.NamespaceURI != "urn:hl7-org:v3")
// throw new XmlException(string.Format("Can't parse '{0}' in namespace '{1}'. The data does not appear to be an HL7v3 instance", r.LocalName, r.NamespaceURI), null);
// Predicate will find the mapped type for us
Predicate<Type> typeComparator = delegate(Type t)
{
object[] structureAttribute = t.GetCustomAttributes(typeof(StructureAttribute), true);
if (structureAttribute.Length > 0 && ((structureAttribute[0] as StructureAttribute).StructureType == StructureAttribute.StructureAttributeType.Interaction || (structureAttribute[0] as StructureAttribute).IsEntryPoint)
&& (structureAttribute[0] as StructureAttribute).Name == r.LocalName && (structureAttribute[0] as StructureAttribute).NamespaceUri == r.NamespaceURI)
return true;
return false;
};
// Try to find the value if it doesn't succeed, try to build it and try to find it again
#if WINDOWS_PHONE
Type fType = a.GetTypes().Find(typeComparator);
#else
Type fType = Array.Find<Type>(a.GetTypes(), typeComparator);
#endif
// Found the type
if (fType != null)
resultContext.Structure = this.ParseObject(r, fType, fType, resultContext);
else
resultContext.AddResultDetail(
new ResultDetail(ResultDetailType.Error, String.Format("Could not find a type to de-serialize '{0}' into", r.Name), r.ToString(), null)
);
// Set the acceptance code
resultContext.Code = CalculateResultCode(resultContext.Details);
return resultContext;
}
/// <summary>
/// Parse an object from <see cref="T:System.Xml.XmlReader"/> <paramref name="r"/>
/// </summary>
/// <param name="r">The <see cref="T:System.Xml.XmlReader"/> to parse an object from</param>
/// <returns>A <see cref="T:MARC.Everest.Formatters.XML.ITS1.Its1FormatterParseResult"/> containing the formatted instance</returns>
/// <remarks>
/// <para>
/// This particular overload of the Graph method can be used to graph objects into a <see cref="T:System.Xml.XmlWriter"/> and can provide
/// an opportunity to use Everest as an assistant (or XmlSerializerSurrogate) for more complex systems like WCF.
/// </para>
/// <example>
/// <code lang="cs" title="Using Everest as a Serializer Assistant">
/// <![CDATA[
/// StringWriter sw = new StringWriter("<hello><MCCI_IN000002CA xmlns=\"urn:hl7-org:v3\"/></hello>");
/// XmlReader reader = XmlReader.Create(sw);
/// reader.Read(); // Read <hello>
///
/// Formatter f = new Formatter();
/// f.GraphAides.Add(typeof(MARC.Everest.Formatters.XML.DataTypes.R1.Formatter));
/// f.ValidateConformance = false;
/// var result = f.Parse(reader);
///
/// reader.Read();
/// reader.Close();
/// Console.WriteLine(result.Code);
///
/// ]]>
/// </code>
/// </example>
/// <para>
/// When using this method, it is recommended that you pass a <see cref="T:MARC.Everest.Xml.XmlStateReader"/> as it
/// will allow the formatter to give additional location information when reporting issues.
/// </para>
/// </remarks>
public IFormatterParseResult Parse(XmlReader r)
{
ThrowIfDisposed();
// Clear existing results
XmlIts1FormatterParseResult resultContext = new XmlIts1FormatterParseResult(ResultCode.Accepted, null);
if (!(r is XmlStateReader))
r = new XmlStateReader(r);
// Initial state
if (r.ReadState == ReadState.Initial)
while (r.NodeType != XmlNodeType.Element)
r.Read();
// Detect if we can parse this...
//if (r.NamespaceURI != "urn:hl7-org:v3")
// throw new XmlException(string.Format("Can't parse '{0}' in namespace '{1}'. The data does not appear to be an HL7v3 instance", r.LocalName, r.NamespaceURI), null);
// Do we have a formatter for the object
Type mappedType;
// Predicate will find the mapped type for us
Predicate<Type> typeComparator = delegate(Type t)
{
object[] structureAttribute = t.GetCustomAttributes(typeof(StructureAttribute), true);
if (structureAttribute.Length > 0 && ((structureAttribute[0] as StructureAttribute).StructureType == StructureAttribute.StructureAttributeType.Interaction || (structureAttribute[0] as StructureAttribute).IsEntryPoint)
&& (structureAttribute[0] as StructureAttribute).Name == r.LocalName && (structureAttribute[0] as StructureAttribute).NamespaceUri == r.NamespaceURI)
return true;
return false;
};
// Try to find the value if it doesn't succeed, try to build it and try to find it again
for (int i = 0; i < 2 && resultContext.Structure == null; i++)
{
if (s_rootNameMaps.TryGetValue(r.LocalName, out mappedType)) // Try to get a root name map
{
resultContext.Structure = ParseObject(r, mappedType, mappedType, resultContext);
resultContext.Code = CalculateResultCode(resultContext.Details);
return resultContext;
}
else if (i == 0) // Try to build the cache for this root name
{
// Last attempt, try to find a type in the app domain that we can scan!
Predicate<Assembly> asmPredicate = delegate(Assembly a)
{
try
{
#if WINDOWS_PHONE
return a.GetTypes().Exists(typeComparator);
#else
return Array.Find<Type>(a.GetTypes(), typeComparator) != null;
#endif
}
catch
{
return false;
}
};
#if WINDOWS_PHONE
Assembly asm = AppDomain.CurrentDomain.GetAssemblies().Find(asmPredicate);
#else
Assembly asm = Array.Find<Assembly>(AppDomain.CurrentDomain.GetAssemblies(), asmPredicate);
#endif
if (asm == null) // Couldn't find assembly... ditch
break;
else
return Parse(r, asm); //BuildCache(new Type[] { Array.Find<Type>(asm.GetTypes(), typeComparator) });
}
//i++;
}
resultContext.AddResultDetail(new ResultDetail(ResultDetailType.Error, String.Format("Could not find a type to de-serialize '{0}' into", r.Name), r.ToString(), null));
resultContext.Code = ResultCode.Rejected;
return resultContext;
}
/// <summary>
/// Parse an object from <see cref="T:System.Xml.XmlReader"/> <paramref name="r"/> using the type
/// hint <param name="t"/>
/// </summary>
/// <param name="r">The <see cref="T:System.Xml.XmlReader"/> to parse an object from</param>
/// <param name="t">The type hint to parse the object</param>
/// <returns>A <see cref="T:MARC.Everest.Formatters.XML.ITS1.Its1FormatterParseResult"/> containing the formatted instance</returns>
/// <remarks>
/// <para>
/// This particular overload of the Graph method can be used to graph objects into a <see cref="T:System.Xml.XmlWriter"/> and can provide
/// an opportunity to use Everest as an assistant (or XmlSerializerSurrogate) for more complex systems like WCF.
/// </para>
/// <example>
/// <code lang="cs" title="Using Everest as a Serializer Assistant">
/// <![CDATA[
/// StringWriter sw = new StringWriter("<hello><MCCI_IN000002CA xmlns=\"urn:hl7-org:v3\"/></hello>");
/// XmlReader reader = XmlReader.Create(sw);
/// reader.Read(); // Read <hello>
///
/// Formatter f = new Formatter();
/// f.GraphAides.Add(typeof(MARC.Everest.Formatters.XML.DataTypes.R1.Formatter));
/// f.ValidateConformance = false;
/// var result = f.Parse(reader, typeof(MCCI_IN000002CA));
///
/// reader.Read();
/// reader.Close();
/// Console.WriteLine(result.Code);
///
/// ]]>
/// </code>
/// </example>
/// <para>
/// When using this method, it is recommended that you pass a <see cref="T:MARC.Everest.Xml.XmlStateReader"/> as it
/// will allow the formatter to give additional location information when reporting issues.
/// </para>
/// </remarks>
public IFormatterParseResult Parse(XmlReader r, Type t)
{
if (!(r is XmlStateReader))
r = new XmlStateReader(r);
// Initial state
if (r.ReadState == ReadState.Initial)
while (r.NodeType != XmlNodeType.Element)
r.Read();
// Detect if we can parse this...
if (r.NamespaceURI != "urn:hl7-org:v3")
throw new XmlException(string.Format("Can't parse '{0}' in namespace '{1}'. The data does not appear to be an HL7v3 instance", r.LocalName, r.NamespaceURI), null);
var resultContext = new XmlIts1FormatterParseResult(ResultCode.Accepted, null);
resultContext.Structure = ParseObject(r, t, null, resultContext);
return resultContext;
}
public virtual IGraphable ParseObject(XmlReader r, Type useType, Type interactionContext, XmlIts1FormatterParseResult resultContext)
{
ThrowIfDisposed();
// Find a helper
string typeName = GetStructureName(useType);
IXmlStructureFormatter ixsf = null;
// xsi type? - We want to adjust the type based on this value
try
{
string xsiType = r.GetAttribute("type", NS_XSI);
// Is this model / type registered somewhere ?
if ((this.Settings & SettingsType.AlwaysCheckForOverrides) != 0 && xsiType == null &&
!typeof(ANY).IsAssignableFrom(useType))
xsiType = this.CreateXSITypeName(useType, interactionContext, r as IXmlNamespaceResolver);
if (xsiType != null)
{
if (useType.IsInterface || typeof(ANY).IsAssignableFrom(useType)) // HACK: We don't override the use type for ANY derivatives as some types are special and require special typing
ixsf = this.GetAdjustedFormatter(xsiType); //Util.ParseXSITypeName(r.GetAttribute("type", NS_XSI));
else
useType = this.ParseXSITypeName(xsiType, r as IXmlNamespaceResolver);
}
else
ixsf = (IXmlStructureFormatter)this.GraphAides.Find(t => t.HandleStructure.Contains(typeName));
}
catch (Exception e)
{
resultContext.AddResultDetail(new ResultDetail(ResultDetailType.Error, e.Message, r.ToString(), e));
}
string currentPath = r is XmlStateReader ? (r as XmlStateReader).CurrentPath : r.Name;
// Does a helper have it?
if (ixsf != null)
{
ixsf.Host = this;
var aideResult = ixsf.Parse(r, useType);
resultContext.AddResultDetail(aideResult.Details);
return aideResult.Structure;
}
#if WINDOWS_PHONE
ITypeFormatter formatter = m_codeGeneratorFormatter.GetFormatter(useType);
if (formatter == null)
formatter = new ReflectFormatter();
#else
ITypeFormatter formatter = m_codeGeneratorFormatter.GetFormatter(useType);
// Is there a formatter and if there is not a formatter
// can we create one?
if (formatter == null && (Settings & SettingsType.UseGeneratorFormat) == SettingsType.UseGeneratorFormat)
s_threadPool.QueueUserWorkItem((WaitCallback)delegate(object state)
{
BuildCache(new Type[] { (Type)state });
}, useType);
// If there is no connector can we use reflection?
if (formatter == null && (Settings & SettingsType.UseReflectionFormat) == SettingsType.UseReflectionFormat)
formatter = new ReflectFormatter();
else if (formatter == null && (Settings & SettingsType.UseGeneratorFormat) == SettingsType.UseGeneratorFormat)
{
s_threadPool.WaitOne();
formatter = m_codeGeneratorFormatter.GetFormatter(useType);
}
#endif
if (formatter == null)
throw new InvalidOperationException(string.Format("Couldn't format '{0}' at {1}, verify formatter settings", useType.FullName, r.ToString()));
// Parse using the formatter
formatter.Host = this;
// Parse the object
IGraphable result = (IGraphable)formatter.Parse(r, useType, interactionContext, resultContext);
IResultDetail[] details = null;
if (details != null && result == null || ValidateConformance && (!formatter.Validate(result, currentPath, out details)))
resultContext.AddResultDetail(details.Length > 0 ? details : new IResultDetail[] { new ResultDetail(ValidateConformance ? ResultDetailType.Error : ResultDetailType.Warning, String.Format("Couldn't parse type '{0}'", useType.ToString()), currentPath) });
return result;
}
