/// <summary>
///
/// </summary>
/// <example>
/// Xml example:
/// <![CDATA[
/// <Property Name="Shooting" Type="Movies.Location" Nullable="false" />
/// ]]>
/// </example>
///<param name="mmodel"></param>
///<param name="entityType"> </param>
///<param name="scP"></param>
///<returns></returns>
public static MetaComplexProperty Parse(MetaModel mmodel, MetaEntityType entityType, XElement scP)
{
var p = new MetaComplexProperty
{
EntityType = entityType,
FullName = entityType.FullName.Dot(scP.Att("Name")),
Name = scP.Att("Name"),
Nullable = scP.Att("Name").ToLower() == "true"
};
mmodel.ComplexProperties.Add(p.FullName, p);
MetaComplexType ct;
if (mmodel.ComplexTypes.ContainsKey(scP.Att("Type")))
ct = mmodel.ComplexTypes[scP.Att("Type")];
else
{
var ctNode = MetaComplexType.FindNode(mmodel, scP.Att("Type"));
if(ctNode == null)
throw new Exception("Couldn't find the ComplexType " + scP.Att("Type") +
". The type was used in " + entityType.FullName.Dot(scP.Att("Name")));
ct = MetaComplexType.Parse(mmodel, ctNode);
}
p.ComplexType = ct;
return p;
}
/*
* <Association Name="FK_movies_genres">
<End Type="Movies.Genre" Role="genre" Multiplicity="0..1" />
<End Type="Movies.Movie" Role="movie" Multiplicity="*" />
<ReferentialConstraint>
<Principal Role="genre">
<PropertyRef Name="Id" />
</Principal>
<Dependent Role="movie">
<PropertyRef Name="GenreId" />
</Dependent>
</ReferentialConstraint>
</Association>
* */
public static MetaAssociationRole Parse(MetaModel mmodel, MetaEntityType fromET, XElement navP)
{
var fullName = navP.Att("Relationship") + '.' + navP.Att("ToRole");
if(mmodel.AssociationRoles.ContainsKey(fullName))
return mmodel.AssociationRoles[fullName];
// navP : <NavigationProperty Name="Movies" Relationship="Movies.FK_movies_genres" FromRole="genre" ToRole="movie" />
var a = new MetaAssociationRole();
a.FullName = fullName;
a.Name = a.FullName.LastPart();
a.NavigationProperty = (from p in fromET.NavigationProperties where p.Name == navP.Att("Name") select p).FirstOrDefault();
mmodel.AssociationRoles.Add(a.FullName, a);
var assNode = mmodel.EdmxFile.Concept.D("Association").WithName(navP.Att("Relationship").LastPart());
var role = assNode.Es("End").FirstWhere("Role", navP.Att("ToRole"));
var toE = mmodel.EntityTypes.ContainsKey(role.Att("Type")) ? mmodel.EntityTypes[role.Att("Type")] : MetaEntityType.Parse(mmodel, role.Att("Type"));
a.MultiplicityValue = role.Att("Multiplicity");
a.ToEntityType = toE;
return a;
}
public static bool IsComplexPropertyNode(MetaModel mmodel, XElement scP)
{
if (mmodel.ComplexTypes.ContainsKey(scP.Att("Type")))
return true;
return mmodel.EdmxFile.Concept.Es("ComplexType").FirstWhere("Name", scP.Att("Type").LastPart()) != null;
}
public static MetaContainer Parse(MetaModel mmodel, string name)
{
var node = mmodel.EdmxFile.Concept.D(NodeName).WithName(name);
if (node == null)
throw new Exception("Couldn't find the container " + name);
return Parse(mmodel, node);
}
public static MetaEntitySet Parse(MetaModel mmodel, string fullName)
{
var node = mmodel.EdmxFile.Concept.D(NodeName).WithName(fullName.LastPart());
if (node == null)
throw new Exception("Couldn't find the EntitySet " + fullName);
return Parse(mmodel, null, node);
}
/// <summary>
///
/// </summary>
/// <example>
/// Xml example:
/// <![CDATA[
/// <Property Type="String" Name="City" MaxLength="50" FixedLength="false" Unicode="true" />
/// ]]>
/// </example>
/// <param name="file"></param>
/// <param name="ct"></param>
/// <param name="prop"></param>
/// <returns></returns>
public static MetaComplexTypeProperty Parse(MetaModel metaModel, MetaComplexType ct, XElement prop)
{
var p = new MetaComplexTypeProperty
{
FullName = ct.FullName.Dot(prop.Att("Name")),
Name = prop.Att("Name"),
Type = prop.Att("Type"),
ComplexType = ct
};
return p;
}
public static MetaContainer Parse(MetaModel mmodel, XElement node)
{
if(node.Name.LocalName != NodeName)
throw new Exception("Invalid Node. To parse a " + NodeName + " you need to provide an XElement with the same name.");
var c = new MetaContainer();
c.Name = node.Att("Name");
c.FullName = node.Parent.Att("Namespace") + '.' + c.Name;
foreach (var eSet in node.Es("EntitySet"))
{
c.EntitySets.Add(MetaEntitySet.Parse(mmodel, c, eSet));
}
mmodel.Containers[c.FullName] = c;
return c;
}
public static MetaScalarProperty Parse(MetaModel mmodel, MetaEntityType et, XElement node)
{
var fullName = et.FullName + '.' + node.Att("Name");
if (mmodel.ScalarProperties.ContainsKey(fullName))
return mmodel.ScalarProperties[fullName];
var sp = new MetaScalarProperty()
{
FullName = fullName,
Name = node.Att("Name"),
Nullable = node.Att("Nullable") == "true",
Type = node.Att("Type"),
EntityType = et
};
mmodel.ScalarProperties.Add(fullName, sp);
return sp;
}
// <EntitySet Name="Genres" EntityType="Movies.Genre" />
// <EntitySet Name="Movies" EntityType="Movies.Movie" />
// <EntitySet Name="People" EntityType="Movies.Person" />
// <EntitySet Name="Roles" EntityType="Movies.Role" />
public static MetaEntitySet Parse(MetaModel mmodel, MetaContainer c, XElement node)
{
if (node.Name.LocalName != NodeName)
throw new Exception("Invalid Node. To parse an " + NodeName + " you need to provide an XElement with the same node name.");
var fullName = c.FullName + '.' + node.Att("Name");
if (mmodel.EntitySets.ContainsKey(fullName))
return mmodel.EntitySets[fullName];
var m = new MetaEntitySet
{
FullName = fullName,
Name = node.Att("Name"),
Container = c
};
mmodel.EntitySets.Add(fullName, m);
m.EntityType = MetaEntityType.Parse(mmodel, node.Att("EntityType"), m);
/* todo: process store
// check for mapping
var mapEnt = file.Mapping.d("EntitySetMapping").WithName(m.Name);
if (mapEnt != null)
{
// we have a mapping! so we should have a MappingFrag...
var mapFrag = mapEnt.d("MappingFragment").FirstOrDefault();
if (mapFrag != null) // load the store
m.Store = MetaEntitySetStore.Parse(file, mapFrag.Att("StoreEntitySet"));
}
if (m.Store != null)
{
m.Store.EntityTypeStore = m.EntityType.Store;
}
*/
return m;
}
/// <summary>
///
/// </summary>
/// <example>
/// Xml Example:
/// <![CDATA[
/// <ComplexType Name="Location">
/// <Property Type="String" Name="City" MaxLength="50" FixedLength="false" Unicode="true" />
/// <Property Type="String" Name="State" MaxLength="50" FixedLength="false" Unicode="true" />
/// <Property Type="String" Name="Country" MaxLength="50" FixedLength="false" Unicode="true" />
/// </ComplexType>
/// ]]>
/// </example>
/// <param name="metaModel"></param>
/// <param name="cType"></param>
/// <returns></returns>
public static MetaComplexType Parse(MetaModel metaModel, XElement cType)
{
var fullName = metaModel.Namespace.Dot(cType.Att("Name"));
if (metaModel.ComplexTypes.ContainsKey(fullName))
return metaModel.ComplexTypes[fullName];
var ct = new MetaComplexType();
ct.FullName = fullName;
ct.Name = cType.Att("Name");
foreach (var prop in cType.Es("Property"))
{
ct.Properties.Add(MetaComplexTypeProperty.Parse(metaModel, ct, prop));
}
metaModel.ComplexTypes.Add(ct.FullName, ct);
return ct;
}
// <NavigationProperty Name="Movies" Relationship="Movies.FK_movies_genres" FromRole="genre" ToRole="movie" />
public static MetaNavigationProperty Parse(MetaModel mmodel, MetaEntityType et, XElement node)
{
var fullName = et.FullName + '.' + node.Att("Name");
if (mmodel.NavigationProperties.ContainsKey(fullName))
return mmodel.NavigationProperties[fullName];
var m = new MetaNavigationProperty
{
FullName = fullName,
Name = node.Att("Name")
};
mmodel.NavigationProperties.Add(fullName, m);
m.AssociationRole = MetaAssociationRole.Parse(mmodel, et, node);
m.EntityType = m.AssociationRole.ToEntityType;
return m;
}
public void TestMetaModelLoad()
{
var edmx = new EdmxFile(@"Movies.edmx");
var model = new MetaModel(edmx);
}
public static List<MetaEntitySet> ParseAll(MetaModel mmodel)
{
// Eg: <EntityContainer Name="MoviesContainer" annotation:LazyLoadingEnabled="true">
var container = mmodel.EdmxFile.Concept.E("EntityContainer");
if (container == null)
throw new Exception("Couldn't find the EntityContainer. The edmx file appears to be invalid.");
var list = (from n in container.D("EntitySet")
select Parse(mmodel, container.Att("Name") + '.' + n.Att("Name"))).ToList();
return list;
}
public static XElement FindNode(MetaModel mmodel, string name)
{
return mmodel.EdmxFile.Concept.Es("ComplexType").WithName(name.LastPart());
}
public static MetaEntityType Parse(MetaModel mmodel, string fullName, MetaEntitySet eSet = null)
{
if (mmodel.EntityTypes.ContainsKey(fullName))
return mmodel.EntityTypes[fullName];
var m = new MetaEntityType
{
FullName = fullName,
Name = fullName.LastPart(),
EntitySet = eSet
};
// need to add before processing related meta-models
mmodel.EntityTypes.Add(m.FullName, m);
var node = mmodel.EdmxFile.Concept.D(NodeName).WithName(m.Name);
var keyNames = (from k in node.D("PropertyRef") select k.Att("Name")).ToList();
// parsing properties
foreach (var scP in node.D("Property"))
{
// Property elements with a Type attribute reprents a ComplexProperty
if (MetaComplexProperty.IsComplexPropertyNode(mmodel, scP))
{
m.ComplexProperties.Add(MetaComplexProperty.Parse(mmodel, m, scP));
}
else
{
var sp = MetaScalarProperty.Parse(mmodel, m, scP);
sp.isKey = keyNames.Contains(scP.Att("Name"));
m.Properties.Add(sp);
}
}
foreach (var navP in node.D("NavigationProperty"))
{
m.NavigationProperties.Add(MetaNavigationProperty.Parse(mmodel, m, navP));
}
// todo: process store
return m;
}
