/// <summary>
/// The ExportTrailer method is invoked to convert all of the
/// elements in the trailer section of a VersaFix dictionary
/// out to an XML QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the trailer elements.
/// </param>
/// <param name="dst">
/// The target dictionary for the trailer elements.
/// </param>
private void ExportTrailer(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Trailer)
{
ExportElement(dxElement, dst.Trailer);
}
}
/// <summary>
/// The PopulateEnums method iterates over all of the fields that
/// are defined in a QuickFix dictionary and converts their inline
/// enumeration definitions into discreet enumeration instances in
/// the target VersaFix dictionary instance.
/// </summary>
/// <param name="src">
/// The XML representation of a QuickFix dictionary that the
/// enumerations are to be read from.
/// </param>
/// <param name="dst">
/// The VersaFix dictionary that the enumerations are to be
/// written out to.
/// </param>
private void PopulateEnums(XmlQfxDictionary src, FixDictionary dst)
{
foreach (object field in src.Fields)
{
XmlQfxField xmlField = field as XmlQfxField;
if (xmlField != null)
{
if (xmlField.Enumeration.Count > 0)
{
string xmlName = xmlField.Name;
if (!string.IsNullOrEmpty(xmlName))
{
FixDxEnumeration dxEnum = new FixDxEnumeration(xmlName);
foreach (object enumerator in xmlField.Enumeration)
{
XmlQfxFieldEnumerator xmlEnumerator = enumerator as XmlQfxFieldEnumerator;
if (xmlEnumerator != null)
{
dxEnum.Enumerators.Add(new FixDxEnumerator(xmlEnumerator.Enum, xmlEnumerator.Description));
}
}
dst.Enums.Add(dxEnum);
}
}
}
}
}
/// <summary>
/// The Export method is invoked to export the contents
/// of a VersaFix data dictionary out to a file in a format
/// that is compatible with the QuickFix system.
/// </summary>
/// <param name="dictionary">
/// The data dictionary that is to be exported.
/// </param>
/// <param name="path">
/// The file the dictionary's data is to be saved to.
/// </param>
public void Export(FixDictionary dictionary, string path)
{
FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None);
Export(dictionary, fs);
fs.Close();
}
/// <summary>
/// This implementation of the Export method serializes the
/// specified dictionary out to a stream that has already been
/// opened by the caller.
/// </summary>
/// <param name="dictionary">
/// The dictionary that is to be exported.
/// </param>
/// <param name="stream">
/// The stream that the XML data is to be written to.
/// </param>
public void Export(FixDictionary dictionary, Stream stream)
{
XmlDictionary xmlDictionary = new XmlDictionary();
// REC: Populate the XML dictionary with all of the
// elements from the supplied FixDictionary instance:
PopulateMetadata(dictionary, xmlDictionary);
PopulateHeader(xmlDictionary, dictionary);
PopulateTrailer(xmlDictionary, dictionary);
PopulateMessages(xmlDictionary, dictionary);
PopulateFields(xmlDictionary, dictionary);
PopulateDataTypes(xmlDictionary, dictionary);
PopulateBlocks(xmlDictionary, dictionary);
PopulateEnums(xmlDictionary, dictionary);
// REC: After the XML serializable representation of
// the dictionary has been populated, use the serializer
// to export its contents out to the specified stream:
XmlSerializer xs = new XmlSerializer(typeof(XmlDictionary));
XmlWriterSettings xwSettings = new XmlWriterSettings();
xwSettings.Indent = true;
xwSettings.OmitXmlDeclaration = true;
XmlSerializerNamespaces xsn = new XmlSerializerNamespaces();
xsn.Add("", "");
XmlWriter writer = XmlWriter.Create(stream, xwSettings);
xs.Serialize(writer, xmlDictionary, xsn);
}
/// <summary>
/// The PopulateMetadata method populates the metadata properties
/// of a VersaFix FIX data dictionary with the properties that are
/// found in an instance of an XML representation of a dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary to read the properties from.
/// </param>
/// <param name="target">
/// The target dictionary to add the properties to.
/// </param>
private static void PopulateMetadata(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxProperty xmlProperty in source.Properties.Elements)
{
target.Properties.Add(xmlProperty.Name, xmlProperty.Value);
}
}
/// <summary>
/// The PopulateTrailer method populates the trailer section
/// of the supplied VFX dictionary with all of the trailer
/// elements that are found in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the trailer elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateTrailer(XmlDictionary source, FixDictionary target)
{
foreach (IFixDxElement dxElement in TranslateElements(source.Trailer.Elements))
{
target.Trailer.Add(dxElement);
}
}
/// <summary>
/// The ExportFields method is invoked to convert all of
/// the field elements in an instance of a VersaFix data
/// dictionary into corresponding entries in an instance
/// of an XML representation of a QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the field definitions.
/// </param>
/// <param name="dst">
/// The target dictionary for the field definitions.
/// </param>
private void ExportFields(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Fields)
{
FixDxField dxField = dxElement as FixDxField;
if (dxField != null)
{
XmlQfxField xmlField = new XmlQfxField();
xmlField.Name = dxField.Name;
xmlField.Number = dxField.Tag.ToString();
xmlField.Type = dxField.Type;
// REC: QuickFix stores the enumerators for each
// field inside the field definition, so we have
// to check if there is an enumeration associated
// with this field and add the enumeration to the
// field definition if one is found:
FixDxEnumeration dxEnum = src.Enums.GetElement(dxField.Name) as FixDxEnumeration;
if (dxEnum != null)
{
foreach (FixDxEnumerator dxEnumerator in dxEnum.Enumerators)
{
XmlQfxFieldEnumerator xmlEnumerator = new XmlQfxFieldEnumerator();
xmlEnumerator.Enum = dxEnumerator.Value;
xmlEnumerator.Description = dxEnumerator.Description;
xmlField.Enumeration.Add(xmlEnumerator);
}
}
dst.Fields.Add(xmlField);
}
}
}
/// <summary>
/// The PopulateDataTypes method populates the data types
/// section of the supplied VFX dictionary with all of the
/// data types that are found in the XML dictionary.
/// </summary>
/// <param name="source">
/// The XML dictionary to read the data types from.
/// </param>
/// <param name="target">
/// The VFX dictionary to write the data types to.
/// </param>
private static void PopulateDataTypes(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxDataType xmlDataType in source.DataTypes.Entries)
{
FixDxDataType fixDataType = new FixDxDataType(xmlDataType.TypeName, xmlDataType.TypeBase);
target.DataTypes.Add(fixDataType);
}
}
public FixDictionary Create()
{
FixDictionary result = new FixDictionary();
result.Properties.Add("Type", "Not Specified");
result.Properties.Add("Fix.Major", "Not Specified");
result.Properties.Add("Fix.Minor", "Not Specified");
return(result);
}
/// <summary>
/// The Clone method is invoked to construct a completely
/// new instance/copy of an instance of a dictionary.
/// </summary>
/// <returns></returns>
public object Clone()
{
FixDictionary result = new FixDictionary();
// REC: Copy all of the metadata properties into the
// new instance of the dictionary:
foreach (string key in _mapProperties.Keys)
{
result.Properties.Add(key, _mapProperties[key]);
}
// REC: Clone all of the header elements in this dictionary
// and add them to the result dictionary:
foreach (IFixDxElement hdrElement in _hdrCollection)
{
result.Header.Add(CloneElement(hdrElement));
}
// REC: Clone all of the field entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxField dxField in _fldElements)
{
result.AddField(CloneField(dxField));
}
// REC: Clone all of the block entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxBlock dxBlock in _blkElements)
{
result.AddBlock(CloneBlock(dxBlock));
}
// REC: Clone all of the message entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxMessage dxMessage in _messages)
{
result.AddMessage(CloneMessage(dxMessage));
}
// REC: Clone all of the enum entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxEnumeration dxEnumeration in _enmElements)
{
result.AddEnumeration(CloneEnumeration(dxEnumeration));
}
// REC: Clone all of the trailer entries in this dictionary
// and add them to the result dictionary:
foreach (IFixDxElement trlElement in _trlCollection)
{
result.Trailer.Add(CloneElement(trlElement));
}
return(result);
}
/// <summary>
/// The PopulateDataTypes method populates the data types
/// section of the supplied XML dictionary with all of the
/// data type definitions that are in the FIX dictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XML dictionary to be populated.
/// </param>
/// <param name="fixDictionary">
/// The FIX dictionary to retrieve the data from.
/// </param>
private static void PopulateDataTypes(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxDataType fixDataType in fixDictionary.DataTypes)
{
XmlFixDxDataType xmlDataType = new XmlFixDxDataType();
xmlDataType.TypeName = fixDataType.Name;
xmlDataType.TypeBase = fixDataType.BaseType;
xmlDictionary.DataTypes.Entries.Add(xmlDataType);
}
}
/// <summary>
/// The PopulateTrailer method iterates over all of the elements
/// that are defined in the trailer section of the QuickFix data
/// dictionary and converts them into the trailer section of the
/// supplied VersaFix data dictionary.
/// </summary>
/// <param name="src">
/// The XML representation of the QuickFix dictionary that the
/// trailer elements are to be read from.
/// </param>
/// <param name="dst">
/// The VersaFix dictionary that the trailer elements are to be
/// converted out to.
/// </param>
private void PopulateTrailer(XmlQfxDictionary src, FixDictionary dst)
{
foreach (object element in src.Trailer)
{
IFixDxElement dxElement = ConvertElement(element);
if (dxElement != null)
{
dst.Trailer.Add(dxElement);
}
}
}
/// <summary>
/// Creates a new entry in the registry for an instance
/// of a FIX dictionary.
/// </summary>
/// <param name="name">
/// The name that the dictionary is registered under.
/// </param>
/// <param name="dictionary">
/// The reference to the dictionary being registered.
/// </param>
public void CreateEntry(string name, FixDictionary dictionary)
{
_rwLock.AcquireWriterLock(Timeout.Infinite);
if (!_mapEntries.ContainsKey(name))
{
_mapEntries.Add(name, dictionary);
}
else
{
_mapEntries[name] = dictionary;
}
_rwLock.ReleaseWriterLock();
}
/// <summary>
/// The PopulateMetadata method populates the metadata properties
/// in an XmlDictionary instance with the corresponding entries from
/// an instance of a VersaFix dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the elements being copied.
/// </param>
/// <param name="target">
/// The target dictionary for the elements to be copied into.
/// </param>
private static void PopulateMetadata(FixDictionary source, XmlDictionary target)
{
foreach (string key in source.Properties.Keys)
{
// REC: Construct an XML representation of the property
// and add it to the target dictionary:
XmlFixDxProperty xmlProperty = new XmlFixDxProperty();
xmlProperty.Name = key;
xmlProperty.Value = source.Properties[key];
target.Properties.Elements.Add(xmlProperty);
}
}
/// <summary>
/// The PopulateMessages method populates the message section
/// of the supplied VFX dictionary with all message definitions
/// that are found in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the message elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateMessages(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxMessage src in source.Messages.Entries)
{
FixDxMessage dst = new FixDxMessage(src.MsgType, src.Name, src.MsgCategory);
foreach (IFixDxElement dxElement in TranslateElements(src.Elements))
{
dst.Elements.Add(dxElement);
}
target.AddMessage(dst);
}
}
/// <summary>
/// The PopulateBlocks method populates the blocks section
/// of the supplied XML dictionary with the corresponding
/// elements from the supplied FixDictionary instance.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance that is to be populated.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateBlocks(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxBlock dxBlock in fixDictionary.Blocks)
{
XmlFixDxBlock xmlBlock = new XmlFixDxBlock();
xmlBlock.Name = dxBlock.Name;
xmlBlock.Type = dxBlock.Type.ToString();
xmlBlock.Field = dxBlock.Field;
xmlBlock.Elements = TranslateElements(dxBlock.Elements).Elements;
xmlDictionary.Blocks.Entries.Add(xmlBlock);
}
}
/// <summary>
/// The Import method is invoked to import a dictionary
/// from a representation that is contained in a file.
/// </summary>
/// <param name="path">
/// The complete path to the file that contains the
/// contents of the dictionary.
/// </param>
/// <returns>
/// The FIX dictionary that is read from the stream or
/// null if the import operation could not complete.
/// </returns>
public FixDictionary Import(string path)
{
try
{
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
FixDictionary result = Import(fs);
fs.Close();
return(result);
}
catch (System.Exception)
{
return(null);
}
}
/// <summary>
/// The PopulateFields method is invoked to convert all of
/// the FIX field definitions in an instance of a QuickFix
/// dictionary into their corresponding representations as
/// elements of a VersaFix dictionary.
/// </summary>
/// <param name="src">
/// The XML representation of a QuickFix dictionary that the
/// fields are to be copied from.
/// </param>
/// <param name="dst">
/// The VersaFix data dictionary that the field definitions
/// are to be copied into.
/// </param>
private void PopulateFields(XmlQfxDictionary src, FixDictionary dst)
{
foreach (object field in src.Fields)
{
XmlQfxField xmlField = field as XmlQfxField;
if (xmlField != null)
{
if (!string.IsNullOrEmpty(xmlField.Name))
{
if (!string.IsNullOrEmpty(xmlField.Number))
{
int nTag = int.Parse(xmlField.Number);
FixDxField dxField = new FixDxField(nTag, xmlField.Name);
// REC: Determine if there's an enumeration that corresponds
// to the name of this field:
if (dst.Enums.GetElement(xmlField.Name) != null)
{
// REC: If an enumeration exists for this field
// then assign it to the VersaFix field:
dxField.Enumeration = xmlField.Name;
}
// REC: Assign the field's data type directly
// from the data type in the QuickFix field.
dxField.Type = xmlField.Type;
dst.Fields.Add(dxField);
// REC: The QuickFix dictionaries do not provide
// a separate section for data types, so we need
// to just copy the data type directly from each
// of the QuickFix fields into the data types of
// the VersaFix dictionary:
if (!string.IsNullOrEmpty(xmlField.Type))
{
IFixDxElement exists = dst.DataTypes.GetElement(xmlField.Type);
if (exists == null)
{
dst.DataTypes.Add(new FixDxDataType(xmlField.Type));
}
}
}
}
}
}
}
/// <summary>
/// The PopulateEnums method populates the enumerations
/// section of the supplied XmlDictionary with all the
/// enumerations from the supplied FixDictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance being populated.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateEnums(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxEnumeration dxEnumeration in fixDictionary.Enums)
{
XmlFixDxEnumeration xmlEnumeration = new XmlFixDxEnumeration();
xmlEnumeration.Name = dxEnumeration.Name;
foreach (FixDxEnumerator dxEnumerator in dxEnumeration.Enumerators)
{
XmlFixDxEnumerator xmlEnumerator = new XmlFixDxEnumerator();
xmlEnumerator.value = dxEnumerator.Value;
xmlEnumerator.Description = dxEnumerator.Description;
xmlEnumeration.Enumerators.Add(xmlEnumerator);
}
xmlDictionary.Enums.Entries.Add(xmlEnumeration);
}
}
/// <summary>
/// The PopulateMessages method is invoked to convert all of
/// the message definitions in a QuickFix dictionary into their
/// corresponding representations in a VersaFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the converted elements.
/// </param>
/// <param name="dst">
/// The target dictionary for the converted elements.
/// </param>
private void PopulateMessages(XmlQfxDictionary src, FixDictionary dst)
{
foreach (object message in src.Messages)
{
XmlQfxMessage xmlMessage = message as XmlQfxMessage;
if (xmlMessage != null)
{
FixDxMessage dxMessage = new FixDxMessage(xmlMessage.MsgType, xmlMessage.Name, xmlMessage.MsgCategory);
foreach (object element in xmlMessage.Elements)
{
dxMessage.Elements.Add(ConvertElement(element));
}
dst.Messages.Add(dxMessage);
}
}
}
/// <summary>
/// The PopulateBlocks method populates the blocks section
/// of the supplied VFX dictionary with all of the blocks
/// that are defined in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the block elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateBlocks(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxBlock src in source.Blocks.Entries)
{
FixDxBlock dst = new FixDxBlock(src.Name);
dst.Type = (FixDxBlockTypes)Enum.Parse(typeof(FixDxBlockTypes), src.Type);
dst.Field = src.Field;
dst.Category = src.Category;
foreach (IFixDxElement element in TranslateElements(src.Elements))
{
dst.Elements.Add(element);
}
target.AddBlock(dst);
}
}
/// <summary>
/// The PopulateEnums method populates the enumerations section
/// of the supplied VFX dictionary with all of the enumerations
/// that are defined in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the enumeration elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateEnums(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxEnumeration src in source.Enums.Entries)
{
FixDxEnumeration dst = new FixDxEnumeration(src.Name);
foreach (object element in src.Enumerators)
{
if (element is XmlFixDxEnumerator)
{
XmlFixDxEnumerator srcEnum = element as XmlFixDxEnumerator;
FixDxEnumerator dstEnum = new FixDxEnumerator(srcEnum.value, srcEnum.Description);
dst.Enumerators.Add(dstEnum);
}
}
target.AddEnumeration(dst);
}
}
/// <summary>
/// The PopulateFields method populates the fields section
/// of the supplied VFX dictionary with all of the fields
/// that are found in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the field elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateFields(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxField src in source.Fields.Entries)
{
if (src.LengthField == null)
{
FixDxField dst = new FixDxField(src.Tag, src.Name, src.Type);
dst.Enumeration = src.Enumeration;
target.AddField(dst);
}
else
{
FixDxField dst = new FixDxField(src.Tag, src.Name, src.Type, src.LengthField);
dst.Enumeration = src.Enumeration;
target.AddField(dst);
}
}
}
/// <summary>
/// The ExportBlocks method is invoked to convert all of
/// the block elements in an instance of a VersaFix data
/// dictionary into corresponding entries in an instance
/// of an XML representation of a QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the block definitions.
/// </param>
/// <param name="dst">
/// The target dictionary for the block definitions.
/// </param>
private void ExportBlocks(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Blocks)
{
FixDxBlock dxBlock = dxElement as FixDxBlock;
if (dxBlock != null)
{
XmlQfxBlock xmlBlock = new XmlQfxBlock();
xmlBlock.Name = dxBlock.Name;
foreach (IFixDxElement dxBlockElement in dxBlock.Elements)
{
ExportElement(dxBlockElement, xmlBlock.Elements);
}
dst.Blocks.Add(xmlBlock);
}
}
}
/// <summary>
/// The Import method deserializes an XML representation of
/// a VersaFix dictionary from a file and converts it into a
/// corresponding instance of FixDictionary.
/// </summary>
/// <param name="path">
/// The path to the XML file that contains the dictionary.
/// </param>
/// <returns>
/// The resulting VersaFix dictionary instance.
/// </returns>
public static FixDictionary Import(string path)
{
FixDictionary result = null;
FileStream stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
try
{
result = Import(stream);
stream.Close();
}
catch (System.Exception)
{
stream.Close();
throw;
}
return(result);
}
/// <summary>
/// The PopulateTrailer method populates the trailer elements
/// in an XmlDictionary instance with the elements from the
/// source dictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance that is being populated.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateTrailer(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
// REC: Iterate over all of the trailer elements in the
// source dictionary and convert them into instances of
// their corresponding XML serializable types:
foreach (IFixDxElement dxElement in fixDictionary.Trailer)
{
if (dxElement is FixDxFieldReference)
{
FixDxFieldReference fieldReference = dxElement as FixDxFieldReference;
XmlFixDxFieldReference xmlReference = new XmlFixDxFieldReference();
xmlReference.Name = fieldReference.Name;
xmlReference.Required = fieldReference.Required;
xmlDictionary.Trailer.Elements.Add(xmlReference);
}
else if (dxElement is FixDxBlockReference)
{
FixDxBlockReference blockReference = dxElement as FixDxBlockReference;
XmlFixDxBlockReference xmlReference = new XmlFixDxBlockReference();
xmlReference.Name = blockReference.Name;
xmlReference.Required = blockReference.Required;
xmlDictionary.Trailer.Elements.Add(xmlReference);
}
else if (dxElement is FixDxGroupReference)
{
FixDxGroupReference groupReference = dxElement as FixDxGroupReference;
XmlFixDxGroupReference xmlReference = new XmlFixDxGroupReference();
xmlReference.Name = groupReference.Name;
xmlReference.Required = groupReference.Required;
XmlFixDxElements xmlElements = TranslateElements(groupReference.Elements);
foreach (object xmlElement in xmlElements.Elements)
{
xmlReference.Elements.Add(xmlElement);
}
xmlDictionary.Trailer.Elements.Add(xmlReference);
}
}
}
/// <summary>
/// This implementation of the Export method serializes the
/// specified dictionary out to the specified file.
/// </summary>
/// <param name="dx">
/// The dictionary that is to be exported.
/// </param>
/// <param name="path">
/// The fully qualified path to the XML file the dictionary
/// is to be exported to.
/// </param>
public void Export(FixDictionary dx, string path)
{
FileStream stream = null;
try
{
stream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None);
Export(dx, stream);
stream.Close();
}
catch (System.Exception)
{
if (stream != null)
{
stream.Close();
}
throw;
}
}
/// <summary>
/// This implementation of the Export method serializes the
/// specified dictionary out to the specified file.
/// </summary>
/// <param name="dx">
/// The dictionary that is to be exported.
/// </param>
/// <param name="path">
/// The fully qualified path to the XML file the dictionary
/// is to be exported to.
/// </param>
public void Export(FixDictionary dx, string path)
{
FileStream stream = null;
try
{
stream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None);
Export(dx, stream);
stream.Close();
}
catch (System.Exception)
{
if (stream != null)
{
stream.Close();
}
throw;
}
}
/// <summary>
/// The PopulateMessages method populates the messages in
/// an XmlDictionary instance with the message definitions
/// from the source dictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance that the message definitions
/// are to be added to.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateMessages(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
// REC: Iterate over all of the message definitions in the
// source dictionary and convert them to XML serializable
// representations for the serializable dictionary:
foreach (FixDxMessage dxMessage in fixDictionary.Messages)
{
XmlFixDxMessage xmlMessage = new XmlFixDxMessage();
xmlMessage.Name = dxMessage.Name;
xmlMessage.MsgType = dxMessage.MsgType;
xmlMessage.MsgCategory = dxMessage.MsgCategory;
XmlFixDxElements xmlElements = TranslateElements(dxMessage.Elements);
foreach (object xmlElement in xmlElements.Elements)
{
xmlMessage.Elements.Add(xmlElement);
}
xmlDictionary.Messages.Entries.Add(xmlMessage);
}
}
/// <summary>
/// The ExportMessages method is invoked to convert all of
/// the message elements in an instance of a VersaFix data
/// dictionary into corresponding entries in an instance
/// of an XML representation of a QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the message definitions.
/// </param>
/// <param name="dst">
/// The target dictionary for the message definitions.
/// </param>
private void ExportMessages(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Messages)
{
FixDxMessage dxMessage = dxElement as FixDxMessage;
if (dxMessage != null)
{
XmlQfxMessage xmlMessage = new XmlQfxMessage();
xmlMessage.Name = dxMessage.Name;
xmlMessage.MsgType = dxMessage.MsgType;
xmlMessage.MsgCategory = dxMessage.MsgCategory;
foreach (IFixDxElement dxMessageElement in dxMessage.Elements)
{
ExportElement(dxMessageElement, xmlMessage.Elements);
}
dst.Messages.Add(xmlMessage);
}
}
}
/// <summary>
/// The Import method deserializes an XML representation
/// of a VersaFix dictionary from a stream and converts it
/// into a corresponding instance of FixDictionary.
/// </summary>
/// <param name="stream">
/// The stream that the XML data is to be read from.
/// </param>
/// <returns>
/// The resulting instance of FixDictionary.
/// </returns>
public static FixDictionary Import(Stream stream)
{
XmlSerializer xs = new XmlSerializer(typeof(XmlDictionary));
XmlDictionary xmlDictionary = xs.Deserialize(stream) as XmlDictionary;
// REC: Construct a new instance of a VersaFix dictionary
// that the XML data will be converted into:
FixDictionary result = new FixDictionary();
// REC: Populate the VersaFix dictionary instance with all
// of the elements that were read from the XML stream:
PopulateMetadata(xmlDictionary, result);
PopulateHeader(xmlDictionary, result);
PopulateTrailer(xmlDictionary, result);
PopulateMessages(xmlDictionary, result);
PopulateFields(xmlDictionary, result);
PopulateDataTypes(xmlDictionary, result);
PopulateBlocks(xmlDictionary, result);
PopulateEnums(xmlDictionary, result);
return(result);
}
/// <summary>
/// The PopulateFields method populates the fields section
/// of an XmlDictionary instance with the field definitions
/// from the supplied FixDictionary instance.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictinary instance that the field definitions
/// are to be added to.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateFields(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxField dxField in fixDictionary.Fields)
{
XmlFixDxField xmlField = new XmlFixDxField();
xmlField.Tag = dxField.Tag;
xmlField.Name = dxField.Name;
xmlField.Type = dxField.Type;
xmlField.Enumeration = dxField.Enumeration;
if (dxField.LengthCoded == true)
{
xmlField.LengthField = dxField.LengthField.ToString();
}
else
{
xmlField.LengthField = null;
}
xmlDictionary.Fields.Entries.Add(xmlField);
}
}
/// <summary>
/// The Export method is invoked to export the contents
/// of a VersaFix data dictionary out to a stream in a format
/// that is compatible with the QuickFix system.
/// </summary>
/// <param name="dictionary">
/// The data dictionary that is to be exported.
/// </param>
/// <param name="stream">
/// The stream the dictionary is to be exported to.
/// </param>
public void Export(FixDictionary dictionary, Stream stream)
{
// REC: Convert the supplied VersaFix data dictionary
// into its corresponding representation as an instance
// of an QuickFix data dictionary:
XmlQfxDictionary xmlDictionary = new XmlQfxDictionary();
// REC: Pull the metadata elements that correspond
// to the QuickFIX attributes for the root element
// and assign them to the appropriate fields:
xmlDictionary.Type = "FIX";
if (dictionary.Properties.ContainsKey("Type"))
{
xmlDictionary.Type = dictionary.Properties["Type"];
}
xmlDictionary.Major = "0";
if (dictionary.Properties.ContainsKey("Major"))
{
xmlDictionary.Major = dictionary.Properties["Major"];
}
else if (dictionary.Properties.ContainsKey("Fix.Major"))
{
xmlDictionary.Major = dictionary.Properties["Fix.Major"];
}
xmlDictionary.Minor = "0";
if (dictionary.Properties.ContainsKey("Minor"))
{
xmlDictionary.Minor = dictionary.Properties["Minor"];
}
else if (dictionary.Properties.ContainsKey("Fix.Minor"))
{
xmlDictionary.Minor = dictionary.Properties["Fix.Minor"];
}
// REC: Convert the header elements:
ExportHeader(dictionary, xmlDictionary);
// REC: Convert all of the fields:
ExportFields(dictionary, xmlDictionary);
// REC: Convert all of the blocks:
ExportBlocks(dictionary, xmlDictionary);
// REC: Convert all of the messages:
ExportMessages(dictionary, xmlDictionary);
// REC: Convert the trailer elements:
ExportTrailer(dictionary, xmlDictionary);
XmlSerializer xs = new XmlSerializer(typeof(XmlQfxDictionary));
XmlWriterSettings xwSettings = new XmlWriterSettings();
xwSettings.Indent = true;
xwSettings.OmitXmlDeclaration = true;
XmlSerializerNamespaces xsn = new XmlSerializerNamespaces();
xsn.Add("", "");
XmlWriter writer = XmlWriter.Create(stream, xwSettings);
xs.Serialize(writer, xmlDictionary, xsn);
return;
}
/// <summary>
/// The Export method is invoked to export the contents
/// of a VersaFix data dictionary out to a file in a format
/// that is compatible with the QuickFix system.
/// </summary>
/// <param name="dictionary">
/// The data dictionary that is to be exported.
/// </param>
/// <param name="path">
/// The file the dictionary's data is to be saved to.
/// </param>
public void Export(FixDictionary dictionary, string path)
{
FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None);
Export(dictionary, fs);
fs.Close();
}
/// <summary>
/// The ExportTrailer method is invoked to convert all of the
/// elements in the trailer section of a VersaFix dictionary
/// out to an XML QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the trailer elements.
/// </param>
/// <param name="dst">
/// The target dictionary for the trailer elements.
/// </param>
private void ExportTrailer(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Trailer)
{
ExportElement(dxElement, dst.Trailer);
}
}
/// <summary>
/// The PopulateBlocks method populates the blocks section
/// of the supplied VFX dictionary with all of the blocks
/// that are defined in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the block elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateBlocks(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxBlock src in source.Blocks.Entries)
{
FixDxBlock dst = new FixDxBlock(src.Name);
dst.Type = (FixDxBlockTypes)Enum.Parse(typeof(FixDxBlockTypes), src.Type);
dst.Field = src.Field;
dst.Category = src.Category;
foreach (IFixDxElement element in TranslateElements(src.Elements))
{
dst.Elements.Add(element);
}
target.AddBlock(dst);
}
}
/// <summary>
/// The PopulateMetadata method populates the metadata properties
/// in an XmlDictionary instance with the corresponding entries from
/// an instance of a VersaFix dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the elements being copied.
/// </param>
/// <param name="target">
/// The target dictionary for the elements to be copied into.
/// </param>
private static void PopulateMetadata(FixDictionary source, XmlDictionary target)
{
foreach (string key in source.Properties.Keys)
{
// REC: Construct an XML representation of the property
// and add it to the target dictionary:
XmlFixDxProperty xmlProperty = new XmlFixDxProperty();
xmlProperty.Name = key;
xmlProperty.Value = source.Properties[key];
target.Properties.Elements.Add(xmlProperty);
}
}
/// <summary>
/// The Clone method is invoked to construct a completely
/// new instance/copy of an instance of a dictionary.
/// </summary>
/// <returns></returns>
public object Clone()
{
FixDictionary result = new FixDictionary();
// REC: Copy all of the metadata properties into the
// new instance of the dictionary:
foreach (string key in _mapProperties.Keys)
{
result.Properties.Add(key, _mapProperties[key]);
}
// REC: Clone all of the header elements in this dictionary
// and add them to the result dictionary:
foreach (IFixDxElement hdrElement in _hdrCollection)
{
result.Header.Add(CloneElement(hdrElement));
}
// REC: Clone all of the field entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxField dxField in _fldElements)
{
result.AddField(CloneField(dxField));
}
// REC: Clone all of the block entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxBlock dxBlock in _blkElements)
{
result.AddBlock(CloneBlock(dxBlock));
}
// REC: Clone all of the message entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxMessage dxMessage in _messages)
{
result.AddMessage(CloneMessage(dxMessage));
}
// REC: Clone all of the enum entries in this dictionary
// and add them to the result dictionary:
foreach (FixDxEnumeration dxEnumeration in _enmElements)
{
result.AddEnumeration(CloneEnumeration(dxEnumeration));
}
// REC: Clone all of the trailer entries in this dictionary
// and add them to the result dictionary:
foreach (IFixDxElement trlElement in _trlCollection)
{
result.Trailer.Add(CloneElement(trlElement));
}
return result;
}
/// <summary>
/// The PopulateEnums method populates the enumerations section
/// of the supplied VFX dictionary with all of the enumerations
/// that are defined in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the enumeration elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateEnums(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxEnumeration src in source.Enums.Entries)
{
FixDxEnumeration dst = new FixDxEnumeration(src.Name);
foreach (object element in src.Enumerators)
{
if (element is XmlFixDxEnumerator)
{
XmlFixDxEnumerator srcEnum = element as XmlFixDxEnumerator;
FixDxEnumerator dstEnum = new FixDxEnumerator(srcEnum.value, srcEnum.Description);
dst.Enumerators.Add(dstEnum);
}
}
target.AddEnumeration(dst);
}
}
/// <summary>
/// The PopulateTrailer method populates the trailer section
/// of the supplied VFX dictionary with all of the trailer
/// elements that are found in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the trailer elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateTrailer(XmlDictionary source, FixDictionary target)
{
foreach (IFixDxElement dxElement in TranslateElements(source.Trailer.Elements))
{
target.Trailer.Add(dxElement);
}
}
/// <summary>
/// The PopulateDataTypes method populates the data types
/// section of the supplied XML dictionary with all of the
/// data type definitions that are in the FIX dictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XML dictionary to be populated.
/// </param>
/// <param name="fixDictionary">
/// The FIX dictionary to retrieve the data from.
/// </param>
private static void PopulateDataTypes(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxDataType fixDataType in fixDictionary.DataTypes)
{
XmlFixDxDataType xmlDataType = new XmlFixDxDataType();
xmlDataType.TypeName = fixDataType.Name;
xmlDataType.TypeBase = fixDataType.BaseType;
xmlDictionary.DataTypes.Entries.Add(xmlDataType);
}
}
/// <summary>
/// The PopulateMessages method populates the message section
/// of the supplied VFX dictionary with all message definitions
/// that are found in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the message elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateMessages(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxMessage src in source.Messages.Entries)
{
FixDxMessage dst = new FixDxMessage(src.MsgType, src.Name, src.MsgCategory);
foreach (IFixDxElement dxElement in TranslateElements(src.Elements))
{
dst.Elements.Add(dxElement);
}
target.AddMessage(dst);
}
}
/// <summary>
/// This implementation of the Export method serializes the
/// specified dictionary out to a stream that has already been
/// opened by the caller.
/// </summary>
/// <param name="dictionary">
/// The dictionary that is to be exported.
/// </param>
/// <param name="stream">
/// The stream that the XML data is to be written to.
/// </param>
public void Export(FixDictionary dictionary, Stream stream)
{
XmlDictionary xmlDictionary = new XmlDictionary();
// REC: Populate the XML dictionary with all of the
// elements from the supplied FixDictionary instance:
PopulateMetadata(dictionary, xmlDictionary);
PopulateHeader(xmlDictionary, dictionary);
PopulateTrailer(xmlDictionary, dictionary);
PopulateMessages(xmlDictionary, dictionary);
PopulateFields(xmlDictionary, dictionary);
PopulateDataTypes(xmlDictionary, dictionary);
PopulateBlocks(xmlDictionary, dictionary);
PopulateEnums(xmlDictionary, dictionary);
// REC: After the XML serializable representation of
// the dictionary has been populated, use the serializer
// to export its contents out to the specified stream:
XmlSerializer xs = new XmlSerializer(typeof(XmlDictionary));
XmlWriterSettings xwSettings = new XmlWriterSettings();
xwSettings.Indent = true;
xwSettings.OmitXmlDeclaration = true;
XmlSerializerNamespaces xsn = new XmlSerializerNamespaces();
xsn.Add("", "");
XmlWriter writer = XmlWriter.Create(stream, xwSettings);
xs.Serialize(writer, xmlDictionary, xsn);
}
/// <summary>
/// The PopulateEnums method populates the enumerations
/// section of the supplied XmlDictionary with all the
/// enumerations from the supplied FixDictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance being populated.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateEnums(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxEnumeration dxEnumeration in fixDictionary.Enums)
{
XmlFixDxEnumeration xmlEnumeration = new XmlFixDxEnumeration();
xmlEnumeration.Name = dxEnumeration.Name;
foreach (FixDxEnumerator dxEnumerator in dxEnumeration.Enumerators)
{
XmlFixDxEnumerator xmlEnumerator = new XmlFixDxEnumerator();
xmlEnumerator.value = dxEnumerator.Value;
xmlEnumerator.Description = dxEnumerator.Description;
xmlEnumeration.Enumerators.Add(xmlEnumerator);
}
xmlDictionary.Enums.Entries.Add(xmlEnumeration);
}
}
/// <summary>
/// The GenerateTags method is invoked to request that the
/// system generate a tag definition file, based on the tags
/// that are discovered in the supplied FIX dictionary.
/// </summary>
/// <param name="dxInstance"></param>
/// <param name="dstPath"></param>
private void GenerateTags(FixDictionary dxInstance, string dstPath, string dstNamespace)
{
StreamWriter mxWriter = new StreamWriter(new FileStream(dstPath, FileMode.Create, FileAccess.Write, FileShare.None));
mxWriter.WriteLine("//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::");
mxWriter.WriteLine("// VERSAFIX FIX ENGINE - FIX TAG DEFINITIONS FILE");
mxWriter.WriteLine("//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::");
mxWriter.WriteLine("using System;");
mxWriter.WriteLine(string.Format("namespace {0} {{\r\n\r\n", dstNamespace));
mxWriter.WriteLine(string.Format("\tpublic class Tags {{"));
foreach (FixDxField dxField in dxInstance.Fields)
{
// REC: Ensure that each field name is valid, in terms of being
// able to represent it as a .NET variable:
bool isAcceptable = true;
foreach (char ch in dxField.Name)
{
if (!char.IsLetterOrDigit(ch) && (ch != '_'))
{
isAcceptable = false;
break;
}
}
if (isAcceptable)
{
mxWriter.WriteLine(string.Format("\t\tpublic static readonly int {0} = {1};\r\n", dxField.Name, dxField.Tag));
}
else
{
mxWriter.WriteLine(string.Format("\t\t// PARSER ERROR: Field name does not look acceptable"));
mxWriter.WriteLine(string.Format("\t\t// {0} = {1}\r\n", dxField.Name, dxField.Tag));
}
}
mxWriter.WriteLine(string.Format("\t}}"));
mxWriter.WriteLine(string.Format("}}"));
mxWriter.Close();
}
/// <summary>
/// The PopulateBlocks method populates the blocks section
/// of the supplied XML dictionary with the corresponding
/// elements from the supplied FixDictionary instance.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance that is to be populated.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateBlocks(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxBlock dxBlock in fixDictionary.Blocks)
{
XmlFixDxBlock xmlBlock = new XmlFixDxBlock();
xmlBlock.Name = dxBlock.Name;
xmlBlock.Type = dxBlock.Type.ToString();
xmlBlock.Field = dxBlock.Field;
xmlBlock.Elements = TranslateElements(dxBlock.Elements).Elements;
xmlDictionary.Blocks.Entries.Add(xmlBlock);
}
}
/// <summary>
/// The PopulateFields method populates the fields section
/// of the supplied VFX dictionary with all of the fields
/// that are found in the supplied XML dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary for the field elements.
/// </param>
/// <param name="target">
/// The target dictionary for the converted elements.
/// </param>
private static void PopulateFields(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxField src in source.Fields.Entries)
{
if (src.LengthField == null)
{
FixDxField dst = new FixDxField(src.Tag, src.Name, src.Type);
dst.Enumeration = src.Enumeration;
target.AddField(dst);
}
else
{
FixDxField dst = new FixDxField(src.Tag, src.Name, src.Type, src.LengthField);
dst.Enumeration = src.Enumeration;
target.AddField(dst);
}
}
}
/// <summary>
/// The PopulateTrailer method populates the trailer elements
/// in an XmlDictionary instance with the elements from the
/// source dictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance that is being populated.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateTrailer(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
// REC: Iterate over all of the trailer elements in the
// source dictionary and convert them into instances of
// their corresponding XML serializable types:
foreach (IFixDxElement dxElement in fixDictionary.Trailer)
{
if (dxElement is FixDxFieldReference)
{
FixDxFieldReference fieldReference = dxElement as FixDxFieldReference;
XmlFixDxFieldReference xmlReference = new XmlFixDxFieldReference();
xmlReference.Name = fieldReference.Name;
xmlReference.Required = fieldReference.Required;
xmlDictionary.Trailer.Elements.Add(xmlReference);
}
else if (dxElement is FixDxBlockReference)
{
FixDxBlockReference blockReference = dxElement as FixDxBlockReference;
XmlFixDxBlockReference xmlReference = new XmlFixDxBlockReference();
xmlReference.Name = blockReference.Name;
xmlReference.Required = blockReference.Required;
xmlDictionary.Trailer.Elements.Add(xmlReference);
}
else if (dxElement is FixDxGroupReference)
{
FixDxGroupReference groupReference = dxElement as FixDxGroupReference;
XmlFixDxGroupReference xmlReference = new XmlFixDxGroupReference();
xmlReference.Name = groupReference.Name;
xmlReference.Required = groupReference.Required;
XmlFixDxElements xmlElements = TranslateElements(groupReference.Elements);
foreach (object xmlElement in xmlElements.Elements)
{
xmlReference.Elements.Add(xmlElement);
}
xmlDictionary.Trailer.Elements.Add(xmlReference);
}
}
}
/// <summary>
/// The PopulateDataTypes method populates the data types
/// section of the supplied VFX dictionary with all of the
/// data types that are found in the XML dictionary.
/// </summary>
/// <param name="source">
/// The XML dictionary to read the data types from.
/// </param>
/// <param name="target">
/// The VFX dictionary to write the data types to.
/// </param>
private static void PopulateDataTypes(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxDataType xmlDataType in source.DataTypes.Entries)
{
FixDxDataType fixDataType = new FixDxDataType(xmlDataType.TypeName, xmlDataType.TypeBase);
target.DataTypes.Add(fixDataType);
}
}
/// <summary>
/// The PopulateFields method populates the fields section
/// of an XmlDictionary instance with the field definitions
/// from the supplied FixDictionary instance.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictinary instance that the field definitions
/// are to be added to.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateFields(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
foreach (FixDxField dxField in fixDictionary.Fields)
{
XmlFixDxField xmlField = new XmlFixDxField();
xmlField.Tag = dxField.Tag;
xmlField.Name = dxField.Name;
xmlField.Type = dxField.Type;
xmlField.Enumeration = dxField.Enumeration;
if (dxField.LengthCoded == true)
{
xmlField.LengthField = dxField.LengthField.ToString();
}
else
{
xmlField.LengthField = null;
}
xmlDictionary.Fields.Entries.Add(xmlField);
}
}
/// <summary>
/// The PopulateMessages method populates the messages in
/// an XmlDictionary instance with the message definitions
/// from the source dictionary.
/// </summary>
/// <param name="xmlDictionary">
/// The XmlDictionary instance that the message definitions
/// are to be added to.
/// </param>
/// <param name="fixDictionary">
/// The FixDictionary instance that is the source of the
/// elements the XmlDictionary is to be populated with.
/// </param>
private static void PopulateMessages(XmlDictionary xmlDictionary, FixDictionary fixDictionary)
{
// REC: Iterate over all of the message definitions in the
// source dictionary and convert them to XML serializable
// representations for the serializable dictionary:
foreach (FixDxMessage dxMessage in fixDictionary.Messages)
{
XmlFixDxMessage xmlMessage = new XmlFixDxMessage();
xmlMessage.Name = dxMessage.Name;
xmlMessage.MsgType = dxMessage.MsgType;
xmlMessage.MsgCategory = dxMessage.MsgCategory;
XmlFixDxElements xmlElements = TranslateElements(dxMessage.Elements);
foreach (object xmlElement in xmlElements.Elements)
{
xmlMessage.Elements.Add(xmlElement);
}
xmlDictionary.Messages.Entries.Add(xmlMessage);
}
}
/// <summary>
/// The ExportMessages method is invoked to convert all of
/// the message elements in an instance of a VersaFix data
/// dictionary into corresponding entries in an instance
/// of an XML representation of a QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the message definitions.
/// </param>
/// <param name="dst">
/// The target dictionary for the message definitions.
/// </param>
private void ExportMessages(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Messages)
{
FixDxMessage dxMessage = dxElement as FixDxMessage;
if (dxMessage != null)
{
XmlQfxMessage xmlMessage = new XmlQfxMessage();
xmlMessage.Name = dxMessage.Name;
xmlMessage.MsgType = dxMessage.MsgType;
xmlMessage.MsgCategory = dxMessage.MsgCategory;
foreach (IFixDxElement dxMessageElement in dxMessage.Elements)
{
ExportElement(dxMessageElement, xmlMessage.Elements);
}
dst.Messages.Add(xmlMessage);
}
}
}
/// <summary>
/// The ExportBlocks method is invoked to convert all of
/// the block elements in an instance of a VersaFix data
/// dictionary into corresponding entries in an instance
/// of an XML representation of a QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the block definitions.
/// </param>
/// <param name="dst">
/// The target dictionary for the block definitions.
/// </param>
private void ExportBlocks(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Blocks)
{
FixDxBlock dxBlock = dxElement as FixDxBlock;
if (dxBlock != null)
{
XmlQfxBlock xmlBlock = new XmlQfxBlock();
xmlBlock.Name = dxBlock.Name;
foreach (IFixDxElement dxBlockElement in dxBlock.Elements)
{
ExportElement(dxBlockElement, xmlBlock.Elements);
}
dst.Blocks.Add(xmlBlock);
}
}
}
/// <summary>
/// The PopulateMetadata method populates the metadata properties
/// of a VersaFix FIX data dictionary with the properties that are
/// found in an instance of an XML representation of a dictionary.
/// </summary>
/// <param name="source">
/// The source dictionary to read the properties from.
/// </param>
/// <param name="target">
/// The target dictionary to add the properties to.
/// </param>
private static void PopulateMetadata(XmlDictionary source, FixDictionary target)
{
foreach (XmlFixDxProperty xmlProperty in source.Properties.Elements)
{
target.Properties.Add(xmlProperty.Name, xmlProperty.Value);
}
}
/// <summary>
/// The ExportFields method is invoked to convert all of
/// the field elements in an instance of a VersaFix data
/// dictionary into corresponding entries in an instance
/// of an XML representation of a QuickFix dictionary.
/// </summary>
/// <param name="src">
/// The source dictionary for the field definitions.
/// </param>
/// <param name="dst">
/// The target dictionary for the field definitions.
/// </param>
private void ExportFields(FixDictionary src, XmlQfxDictionary dst)
{
foreach (IFixDxElement dxElement in src.Fields)
{
FixDxField dxField = dxElement as FixDxField;
if (dxField != null)
{
XmlQfxField xmlField = new XmlQfxField();
xmlField.Name = dxField.Name;
xmlField.Number = dxField.Tag.ToString();
xmlField.Type = dxField.Type;
// REC: QuickFix stores the enumerators for each
// field inside the field definition, so we have
// to check if there is an enumeration associated
// with this field and add the enumeration to the
// field definition if one is found:
FixDxEnumeration dxEnum = src.Enums.GetElement(dxField.Name) as FixDxEnumeration;
if (dxEnum != null)
{
foreach (FixDxEnumerator dxEnumerator in dxEnum.Enumerators)
{
XmlQfxFieldEnumerator xmlEnumerator = new XmlQfxFieldEnumerator();
xmlEnumerator.Enum = dxEnumerator.Value;
xmlEnumerator.Description = dxEnumerator.Description;
xmlField.Enumeration.Add(xmlEnumerator);
}
}
dst.Fields.Add(xmlField);
}
}
}
/// <summary>
/// The Import method deserializes an XML representation
/// of a VersaFix dictionary from a stream and converts it
/// into a corresponding instance of FixDictionary.
/// </summary>
/// <param name="stream">
/// The stream that the XML data is to be read from.
/// </param>
/// <returns>
/// The resulting instance of FixDictionary.
/// </returns>
public static FixDictionary Import(Stream stream)
{
XmlSerializer xs = new XmlSerializer(typeof(XmlDictionary));
XmlDictionary xmlDictionary = xs.Deserialize(stream) as XmlDictionary;
// REC: Construct a new instance of a VersaFix dictionary
// that the XML data will be converted into:
FixDictionary result = new FixDictionary();
// REC: Populate the VersaFix dictionary instance with all
// of the elements that were read from the XML stream:
PopulateMetadata(xmlDictionary, result);
PopulateHeader(xmlDictionary, result);
PopulateTrailer(xmlDictionary, result);
PopulateMessages(xmlDictionary, result);
PopulateFields(xmlDictionary, result);
PopulateDataTypes(xmlDictionary, result);
PopulateBlocks(xmlDictionary, result);
PopulateEnums(xmlDictionary, result);
return result;
}
