public static void Constructor(string name, string thisKey, string otherKey, string[] thisKeyMembers, string[] otherKeyMembers)
{
var attribute = new AssociationAttribute(name, thisKey, otherKey);
Assert.Equal(name, attribute.Name);
Assert.Equal(thisKey, attribute.ThisKey);
Assert.Equal(otherKey, attribute.OtherKey);
if (thisKey == null)
{
Assert.Throws <NullReferenceException>(() => attribute.ThisKeyMembers);
}
else
{
Assert.Equal(thisKeyMembers, attribute.ThisKeyMembers);
}
if (otherKey == null)
{
Assert.Throws <NullReferenceException>(() => attribute.OtherKeyMembers);
}
else
{
Assert.Equal(otherKeyMembers, attribute.OtherKeyMembers);
}
}
public static void Can_construct_attribute_and_get_whitespace_values()
{
var attribute =
new AssociationAttribute(null, string.Empty, " \t\r\n");
Assert.Equal(null, attribute.Name);
Assert.Equal(string.Empty, attribute.ThisKey);
Assert.Equal(" \t\r\n", attribute.OtherKey);
}
public static void Can_construct_attribute_and_get_values()
{
var attribute =
new AssociationAttribute("TestName", "TestThisKey", "TestOtherKey");
Assert.Equal("TestName", attribute.Name);
Assert.Equal("TestThisKey", attribute.ThisKey);
Assert.Equal("TestOtherKey", attribute.OtherKey);
}
public static void Can_get_and_set_IsForeignKey()
{
var attribute = new AssociationAttribute("Name", "ThisKey", "OtherKey");
Assert.Equal(false, attribute.IsForeignKey);
attribute.IsForeignKey = true;
Assert.Equal(true, attribute.IsForeignKey);
attribute.IsForeignKey = false;
Assert.Equal(false, attribute.IsForeignKey);
}
public static void Can_get_ThisKeyMembers_and_OtherKeyMembers()
{
var listOfThisKeys = new List<string>() { "ThisKey1", "ThisKey2", "ThisKey3" };
var listOfOtherKeys = new List<string>() { "OtherKey1", "OtherKey2" };
// doesn't matter how many spaces are between keys, but they must be separated by a comma
var attribute = new AssociationAttribute("Name", "ThisKey1, ThisKey2, ThisKey3", "OtherKey1, OtherKey2");
Assert.True(listOfThisKeys.SequenceEqual(attribute.ThisKeyMembers));
Assert.True(listOfOtherKeys.SequenceEqual(attribute.OtherKeyMembers));
}
public static void Can_construct_attribute_and_get_whitespace_values()
{
var attribute =
new AssociationAttribute(null, string.Empty, " \t\r\n");
Assert.Equal(null, attribute.Name);
Assert.Equal(string.Empty, attribute.ThisKey);
Assert.Equal(" \t\r\n", attribute.OtherKey);
}
public static void Can_construct_attribute_and_get_values()
{
var attribute =
new AssociationAttribute("TestName", "TestThisKey", "TestOtherKey");
Assert.Equal("TestName", attribute.Name);
Assert.Equal("TestThisKey", attribute.ThisKey);
Assert.Equal("TestOtherKey", attribute.OtherKey);
}
private void AddAttachMethod(Type linkTableType, AssociationAttribute assocAttrThisEnd, AssociationAttribute assocAttrOtherEnd, PropertyDescriptor prop1, PropertyDescriptor prop2)
{
var linkTableFullTypeName = linkTableType.FullName;
var navProp1TypeFullName = prop1.PropertyType.FullName;
var navProp2TypeName = prop2.PropertyType.Name;
var navProp2TypeFullName = prop2.PropertyType.FullName;
var navProp1NameLower = ToLowerInitial(prop1.Name);
var navProp2NameLower = ToLowerInitial(prop2.Name);
var thisKeyMembers = assocAttrThisEnd.ThisKeyMembers.ToList();
var otherKeyMembers = assocAttrThisEnd.OtherKeyMembers.ToList();
WriteLine(@"#region Lines added by m2m4ria code generator");
WriteLine(@"/// <summary>");
WriteLine(
@"/// This method attaches {0} and {1} to the current link table entity, in such a way",
navProp1TypeFullName,
navProp2TypeFullName);
WriteLine(@"/// that both navigation properties are set before an INotifyCollectionChanged event is fired.");
WriteLine(@"/// </summary>");
WriteLine(@"/// <param name=""r""/>");
WriteLine(@"/// <param name=""{0}""/>", navProp1NameLower);
WriteLine(@"/// <param name=""{0}""/>", navProp2NameLower);
WriteLine(
@"[System.ObsoleteAttribute(""This property is only intended for use by the M2M4Ria solution."")]");
WriteLine(
@"public static void Attach{0}To{1}({2} r, {3} {4}, {5} {6})",
navProp2TypeName,
assocAttrOtherEnd.Name,
linkTableFullTypeName,
navProp1TypeFullName,
navProp1NameLower,
navProp2TypeFullName,
navProp2NameLower);
WriteLine(@"{");
WriteLine(@" var dummy = r.{0}; // this is to instantiate the EntityRef<{0}>", prop2.Name);
WriteLine(@" r._{0}.Entity = {0};", navProp2NameLower);
for(var i = 0; i < thisKeyMembers.Count(); i++)
{
var thisKeyLower = ToLowerInitial(thisKeyMembers[i]);
WriteLine(@" r._{0} = {1}.{2};", thisKeyLower, navProp2NameLower, otherKeyMembers[i]);
}
WriteLine(@" r.{0} = {1};", prop1.Name, navProp1NameLower);
WriteLine(@" r._{0}.Entity = null;", navProp2NameLower);
for(var i = 0; i < thisKeyMembers.Count(); i++)
{
var thisKeyLower = ToLowerInitial(thisKeyMembers[i]);
var keyType = linkTableType.GetProperty(thisKeyMembers[i]).PropertyType;
WriteLine(@" r._{0} = default({1});", thisKeyLower, keyType.FullName);
}
WriteLine(@" r.{0} = {1};", prop2.Name, navProp2NameLower);
WriteLine(@"}");
WriteLine(@"#endregion");
}
public static void Can_get_and_set_IsForeignKey()
{
var attribute = new AssociationAttribute("Name", "ThisKey", "OtherKey");
Assert.Equal(false, attribute.IsForeignKey);
attribute.IsForeignKey = true;
Assert.Equal(true, attribute.IsForeignKey);
attribute.IsForeignKey = false;
Assert.Equal(false, attribute.IsForeignKey);
}
private static string GetLinkTableOtherNavigationPropertyName(
AssociationAttribute association, Type linkTableType)
{
var properties =
from p in TypeDescriptor.GetProperties(linkTableType).OfType<PropertyDescriptor>()
let x = p.Attributes[typeof(AssociationAttribute)] as AssociationAttribute
where x != null
where x.Name != association.Name
select p;
return properties.Single().Name;
}
public static void IsForeignKey_GetSet_ReturnsExpected()
{
var attribute = new AssociationAttribute("Name", "ThisKey", "OtherKey");
Assert.False(attribute.IsForeignKey);
attribute.IsForeignKey = true;
Assert.True(attribute.IsForeignKey);
attribute.IsForeignKey = false;
Assert.False(attribute.IsForeignKey);
}
public static void IsForeignKey_GetSet_ReturnsExpected()
{
var attribute = new AssociationAttribute("Name", "ThisKey", "OtherKey");
Assert.False(attribute.IsForeignKey);
attribute.IsForeignKey = true;
Assert.True(attribute.IsForeignKey);
attribute.IsForeignKey = false;
Assert.False(attribute.IsForeignKey);
}
public void TestAssociationAttribute()
{
AssociationAttribute attr = new AssociationAttribute("name", "thisKey", "otherKey");
attr.IsForeignKey = false;
Assert.AreEqual("name", attr.Name);
Assert.AreEqual("thisKey", attr.ThisKey);
Assert.AreEqual("otherKey", attr.OtherKey);
Assert.AreEqual(false, attr.IsForeignKey);
// Verify can reverse polarity of foreign key
attr.IsForeignKey = true;
Assert.AreEqual(true, attr.IsForeignKey);
}
public static void Can_get_ThisKeyMembers_and_OtherKeyMembers()
{
var listOfThisKeys = new List <string>()
{
"ThisKey1", "ThisKey2", "ThisKey3"
};
var listOfOtherKeys = new List <string>()
{
"OtherKey1", "OtherKey2"
};
// doesn't matter how many spaces are between keys, but they must be separated by a comma
var attribute = new AssociationAttribute("Name", "ThisKey1, ThisKey2, ThisKey3", "OtherKey1, OtherKey2");
Assert.True(listOfThisKeys.SequenceEqual(attribute.ThisKeyMembers));
Assert.True(listOfOtherKeys.SequenceEqual(attribute.OtherKeyMembers));
}
public static void Constructor(string name, string thisKey, string otherKey, string[] thisKeyMembers, string[] otherKeyMembers)
{
var attribute = new AssociationAttribute(name, thisKey, otherKey);
Assert.Equal(name, attribute.Name);
Assert.Equal(thisKey, attribute.ThisKey);
Assert.Equal(otherKey, attribute.OtherKey);
if (thisKey == null)
{
Assert.Throws<NullReferenceException>(() => attribute.ThisKeyMembers);
}
else
{
Assert.Equal(thisKeyMembers, attribute.ThisKeyMembers);
}
if (otherKey == null)
{
Assert.Throws<NullReferenceException>(() => attribute.OtherKeyMembers);
}
else
{
Assert.Equal(otherKeyMembers, attribute.OtherKeyMembers);
}
}
/// <summary>
/// Returns a collection of all the <see cref="Attribute"/>s we infer from the metadata associated
/// with the metadata member corresponding to the given property descriptor
/// </summary>
/// <param name="pd">A <see cref="PropertyDescriptor"/>.</param>
/// <returns>A collection of attributes inferred from metadata in the given descriptor.</returns>
protected override IEnumerable <Attribute> GetMemberAttributes(PropertyDescriptor pd)
{
List <Attribute> attributes = new List <Attribute>();
MetaDataMember member = this._metaType.DataMembers.Where(p => p.Name == pd.Name).SingleOrDefault();
if (member != null)
{
EditableAttribute editableAttribute = null;
bool hasKeyAttribute = (pd.Attributes[typeof(KeyAttribute)] != null);
if (member.IsPrimaryKey && !hasKeyAttribute)
{
attributes.Add(new KeyAttribute());
hasKeyAttribute = true;
}
// Check if the member is DB generated and add the DatabaseGeneratedAttribute to it if not already present.
if (member.IsDbGenerated && pd.Attributes[typeof(DatabaseGeneratedAttribute)] == null)
{
if (member.AutoSync == AutoSync.OnInsert)
{
attributes.Add(new DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity));
}
else if (member.AutoSync == AutoSync.Always)
{
attributes.Add(new DatabaseGeneratedAttribute(DatabaseGeneratedOption.Computed));
}
}
if (hasKeyAttribute && !this._keyIsEditable)
{
editableAttribute = new EditableAttribute(false)
{
AllowInitialValue = true
};
}
if (member.IsAssociation &&
pd.Attributes[typeof(System.ComponentModel.DataAnnotations.AssociationAttribute)] == null)
{
System.ComponentModel.DataAnnotations.AssociationAttribute assocAttrib = this.TypeDescriptionContext.CreateAssociationAttribute(member);
attributes.Add(assocAttrib);
}
// Add Required attribute to metdata if the member cannot be null and it is either a reference type or a Nullable<T>
bool isStringType = pd.PropertyType == typeof(string) || pd.PropertyType == typeof(char[]);
if (!member.CanBeNull && (!pd.PropertyType.IsValueType || IsNullableType(pd.PropertyType)) &&
pd.Attributes[typeof(RequiredAttribute)] == null)
{
attributes.Add(new RequiredAttribute());
}
// Add implicit ConcurrencyCheck attribute to metadata if UpdateCheck is anything other than UpdateCheck.Never
if (member.UpdateCheck != UpdateCheck.Never &&
pd.Attributes[typeof(ConcurrencyCheckAttribute)] == null)
{
attributes.Add(new ConcurrencyCheckAttribute());
}
bool hasTimestampAttribute = (pd.Attributes[typeof(TimestampAttribute)] != null);
if (member.IsVersion && !hasTimestampAttribute)
{
attributes.Add(new TimestampAttribute());
hasTimestampAttribute = true;
}
// All members marked with TimestampAttribute (inferred or explicit) need to
// have [Editable(false)] applied
if (hasTimestampAttribute && editableAttribute == null)
{
editableAttribute = new EditableAttribute(false);
}
// Add RoundtripOriginal attribute to this member unless
// - this entity has a timestamp member, in which case that member should be the ONLY
// member we apply RTO to.
// - the member is marked with AssociationAttribute
if (!member.IsAssociation &&
pd.Attributes[typeof(System.ComponentModel.DataAnnotations.AssociationAttribute)] == null &&
(this._metaType.VersionMember == null || member.IsVersion))
{
if (pd.Attributes[typeof(RoundtripOriginalAttribute)] == null)
{
attributes.Add(new RoundtripOriginalAttribute());
}
}
if (isStringType && member.DbType != null && member.DbType.Length > 0 &&
pd.Attributes[typeof(StringLengthAttribute)] == null)
{
InferStringLengthAttribute(member.DbType, attributes);
}
// Add EditableAttribute if required
if (editableAttribute != null && pd.Attributes[typeof(EditableAttribute)] == null)
{
attributes.Add(editableAttribute);
}
}
return(attributes.ToArray());
}
public AssociationMetadata(PropertyDescriptor pd)
{
this.PropertyDescriptor = pd;
AttributeCollection propertyAttributes = pd.ExplicitAttributes();
this.AssociationAttribute = (AssociationAttribute) propertyAttributes[typeof (AssociationAttribute)];
this.IsExternal = propertyAttributes[typeof (ExternalReferenceAttribute)] != null;
this.IsCollection = EntityGenerator.IsCollectionType(pd.PropertyType);
if (!this.IsCollection)
{
this.PropTypeName = CodeGenUtilities.GetTypeName(pd.PropertyType);
this.AssociationTypeName = @"OpenRiaServices.DomainServices.Client.EntityRef<" + this.PropTypeName + ">";
this.Attributes = propertyAttributes.Cast<Attribute>().Where(a => a.GetType() != typeof (DataMemberAttribute));
}
else
{
this.PropTypeName = CodeGenUtilities.GetTypeName(TypeUtility.GetElementType(pd.PropertyType));
this.AssociationTypeName = "OpenRiaServices.DomainServices.Client.EntityCollection<" + this.PropTypeName + ">";
List<Attribute> attributeList = propertyAttributes.Cast<Attribute>().ToList();
ReadOnlyAttribute readOnlyAttr = propertyAttributes.OfType<ReadOnlyAttribute>().SingleOrDefault();
if (readOnlyAttr != null && !propertyAttributes.OfType<EditableAttribute>().Any())
{
attributeList.Add(new EditableAttribute(!readOnlyAttr.IsReadOnly));
}
this.Attributes = attributeList.Where(a => a.GetType() != typeof (DataMemberAttribute));
}
this.PropertyName = CodeGenUtilities.GetSafeName(pd.Name);
this.FieldName = CodeGenUtilities.MakeCompliantFieldName(this.PropertyName);
}
/// <summary>
/// Sets the parent association info for this entity.
/// </summary>
/// <remarks>
/// Since a Type can have multiple compositions of the same Type, to
/// identify a parent association, we must track both the parent instance
/// AND the association.
/// </remarks>
/// <param name="parent">The parent.</param>
/// <param name="association">The parent association.</param>
internal void SetParent(Entity parent, AssociationAttribute association)
{
if (this._parent != parent)
{
if (parent == this)
{
throw new InvalidOperationException(Resource.Entity_ChildCannotBeItsParent);
}
this._parent = parent;
}
this._parentAssociation = association;
}
public void Constructor ()
{
AssociationAttribute attr;
attr = new AssociationAttribute (null, "key1,key2", "key3,key4");
Assert.AreEqual (null, attr.Name, "#A1-1");
Assert.AreEqual ("key1,key2", attr.ThisKey, "#A1-2");
Assert.AreEqual ("key3,key4", attr.OtherKey, "#A1-3");
Assert.IsNotNull (attr.OtherKeyMembers, "#A2-1");
int count = 0;
var list = new List<string> ();
foreach (string m in attr.OtherKeyMembers) {
count++;
list.Add (m);
}
Assert.AreEqual (2, count, "#A2-2");
Assert.AreEqual ("key3", list [0], "#A2-3");
Assert.AreEqual ("key4", list [1], "#A2-4");
Assert.IsNotNull (attr.ThisKeyMembers, "#A3-1");
count = 0;
list = new List<string> ();
foreach (string m in attr.ThisKeyMembers) {
count++;
list.Add (m);
}
Assert.AreEqual (2, count, "#A3-2");
Assert.AreEqual ("key1", list [0], "#A3-3");
Assert.AreEqual ("key2", list [1], "#A3-4");
attr = new AssociationAttribute ("name", null, "key3,key4");
Assert.AreEqual ("name", attr.Name, "#B1-1");
Assert.AreEqual (null, attr.ThisKey, "#B1-2");
Assert.AreEqual ("key3,key4", attr.OtherKey, "#B1-3");
Assert.IsNotNull (attr.OtherKeyMembers, "#B2-1");
count = 0;
list = new List<string> ();
foreach (string m in attr.OtherKeyMembers) {
count++;
list.Add (m);
}
Assert.AreEqual (2, count, "#B2-2");
Assert.AreEqual ("key3", list [0], "#B2-3");
Assert.AreEqual ("key4", list [1], "#B2-4");
// this is just sad...
try {
var m = attr.ThisKeyMembers;
Assert.Fail ("#B2-5");
} catch (NullReferenceException) {
// success
}
attr = new AssociationAttribute ("name", " key1 , key 2 ,, ,key 3 ", " ");
Assert.IsNotNull (attr.ThisKeyMembers, "#C1");
count = 0;
list = new List<string> ();
foreach (string m in attr.ThisKeyMembers) {
count++;
list.Add (m);
}
// It seems all the whitespace is removed from key names
Assert.AreEqual (5, count, "#C2-1");
Assert.AreEqual ("key1", list [0], "#C2-2");
Assert.AreEqual ("key2", list [1], "#C2-3");
Assert.AreEqual (String.Empty, list [2], "#C2-4");
Assert.AreEqual (String.Empty, list [3], "#C2-5");
Assert.AreEqual ("key3", list [4], "#C2-6");
Assert.IsNotNull (attr.OtherKeyMembers, "#C3");
count = 0;
list = new List<string> ();
foreach (string m in attr.OtherKeyMembers) {
count++;
list.Add (m);
}
Assert.AreEqual (1, count, "#C4-1");
Assert.AreEqual (String.Empty, list [0], "#C4-2");
}
internal static PropertyDescriptor GetReverseAssociation(PropertyDescriptor propertyDescriptor, AssociationAttribute assocAttrib)
{
Type otherType = TypeUtility.GetElementType(propertyDescriptor.PropertyType);
foreach (PropertyDescriptor entityMember in TypeDescriptor.GetProperties(otherType))
{
if (entityMember.Name == propertyDescriptor.Name)
{
// for self associations, both ends of the association are in
// the same class and have the same name. Therefore, we need to
// skip the member itself.
continue;
}
AssociationAttribute otherAssocAttrib = entityMember.Attributes[typeof(AssociationAttribute)] as AssociationAttribute;
if (otherAssocAttrib != null && otherAssocAttrib.Name == assocAttrib.Name)
{
return entityMember;
}
}
return null;
}
private void GenerateSingletonAssociation(CodeTypeDeclaration proxyClass, PropertyDescriptor pd, AssociationAttribute associationAttribute, bool isExternal)
{
CodeTypeReference propType =
isExternal ?
new CodeTypeReference(pd.PropertyType.FullName) { Options = CodeTypeReferenceOptions.GlobalReference } :
CodeGenUtilities.GetTypeReference(pd.PropertyType, this.ClientProxyGenerator, proxyClass);
// generate field:
// private EntityRef<Product> _Product;
CodeTypeReference fldType = CodeGenUtilities.GetTypeReference(TypeConstants.EntityRefTypeFullName, this.Type.Namespace, false);
fldType.TypeArguments.Add(propType);
CodeMemberField fld = new CodeMemberField();
fld.Attributes = MemberAttributes.Private;
fld.Name = CodeGenUtilities.MakeCompliantFieldName(pd.Name);
fld.Type = fldType;
proxyClass.Members.Add(fld);
// generate property:
// public Product Product { get {...} set {...} }
CodeMemberProperty prop = new CodeMemberProperty();
prop.Attributes = MemberAttributes.Public | MemberAttributes.Final;
prop.Name = pd.Name;
prop.Type = propType;
prop.HasGet = true;
prop.HasSet = true;
// For the FK side of external associations, we generate a "reduced" setter that
// does validation and synchronizes FK members
if (isExternal && !associationAttribute.IsForeignKey)
{
prop.HasSet = false;
}
// Generate <summary> comment for property
string format = prop.HasSet
? Resource.CodeGen_Entity_Singleton_Association_Property_Summary_Comment
: Resource.CodeGen_Entity_Singleton_Association_ReadOnly_Property_Summary_Comment;
string comment = string.Format(CultureInfo.CurrentCulture, format, pd.PropertyType.Name);
prop.Comments.AddRange(CodeGenUtilities.GenerateSummaryCodeComment(comment, this.ClientProxyGenerator.IsCSharp));
// ----------------------------------------------------------------
// Propagate the custom attributes (except DataMember)
// ----------------------------------------------------------------
AttributeCollection propertyAttributes = pd.ExplicitAttributes();
CustomAttributeGenerator.GenerateCustomAttributes(
this.ClientProxyGenerator,
proxyClass,
ex => string.Format(CultureInfo.CurrentCulture, Resource.ClientCodeGen_Attribute_ThrewException_CodeTypeMember, ex.Message, prop.Name, proxyClass.Name, ex.InnerException.Message),
propertyAttributes.Cast<Attribute>().Where(a => a.GetType() != typeof(DataMemberAttribute)),
prop.CustomAttributes,
prop.Comments);
// --------------------------
// Generate the filter method
// --------------------------
// private bool filter_Product(Product entity) {
// return entity.ProductID == ProductID;
// }
string[] thisKeyProps = associationAttribute.ThisKeyMembers.ToArray();
string[] otherKeyProps = associationAttribute.OtherKeyMembers.ToArray();
CodeMemberMethod filterMethod = this.GenerateFilterMethod(proxyClass, pd.Name, pd.PropertyType, thisKeyProps, otherKeyProps, isExternal);
// --------------------------
// Generate getter
// --------------------------
// generate delayed initialization
// if (_Product == null) {
// _Product = new EntityRef<Product>(this, filter_Product);
// }
CodeExpression entityExpr = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), fld.Name);
entityExpr = new CodePropertyReferenceExpression(entityExpr, "Entity");
CodeExpression isRefNullExpr =
CodeGenUtilities.MakeEqualToNull(
new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), fld.Name));
CodeExpression filterDelegate =
CodeGenUtilities.MakeDelegateCreateExpression(this.ClientProxyGenerator.IsCSharp, new CodeTypeReference("System.Func"), filterMethod.Name);
CodeAssignStatement initExpr = new CodeAssignStatement(
new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), fld.Name),
new CodeObjectCreateExpression(
fldType,
new CodeThisReferenceExpression(),
new CodePrimitiveExpression(prop.Name),
filterDelegate));
prop.GetStatements.Add(new CodeConditionStatement(isRefNullExpr, initExpr));
// generate : return _Product.Entity;
prop.GetStatements.Add(new CodeMethodReturnStatement(entityExpr));
// --------------------------
// Generate setter
// --------------------------
if (prop.HasSet)
{
PropertyDescriptor reverseAssociationMember = GetReverseAssociation(pd, associationAttribute);
CodeStatement detachStatement = null;
CodeStatement attachStatement = null;
bool reverseIsSingleton = false;
// we need to emit back-reference fixup code if this association is bi-directional, and the other side
// of the association will also be generated (don't want to generate code that references non-existent
// members)
bool isBiDirectionalAssociation = (reverseAssociationMember != null) && this.CanGenerateProperty(reverseAssociationMember);
if (!isExternal && isBiDirectionalAssociation)
{
// currently relying on our naming convention for association names to get the name
// of the reverse collection property
string revName = reverseAssociationMember.Name;
reverseIsSingleton = !IsCollectionType(reverseAssociationMember.PropertyType);
if (!reverseIsSingleton)
{
detachStatement = new CodeExpressionStatement(
new CodeMethodInvokeExpression(
new CodePropertyReferenceExpression(
new CodeVariableReferenceExpression("previous"),
revName),
"Remove",
new CodeThisReferenceExpression()));
attachStatement = new CodeExpressionStatement(
new CodeMethodInvokeExpression(
new CodePropertyReferenceExpression(
new CodePropertySetValueReferenceExpression(),
revName),
"Add",
new CodeThisReferenceExpression()));
}
else
{
detachStatement = new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeVariableReferenceExpression("previous"),
revName),
new CodePrimitiveExpression(null));
attachStatement = new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodePropertySetValueReferenceExpression(),
revName),
new CodeThisReferenceExpression());
}
}
// code to sync FK values from the new property value
List<CodeStatement> statements1 = null;
List<CodeStatement> statements2 = null;
statements1 = new List<CodeStatement>();
if (associationAttribute.IsForeignKey)
{
// only emit FK sync code if this is a foreign key association
for (int i = 0; i < thisKeyProps.Length; i++)
{
statements1.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(new CodeThisReferenceExpression(), thisKeyProps[i]),
new CodePropertyReferenceExpression(new CodePropertySetValueReferenceExpression(), otherKeyProps[i])));
}
// code to set FK values to default values if the new property value is null
statements2 = new List<CodeStatement>();
for (int i = 0; i < thisKeyProps.Length; i++)
{
Type foreignKeyType = TypeDescriptor.GetProperties(this.Type).Find(thisKeyProps[i], false).PropertyType;
statements2.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(new CodeThisReferenceExpression(), thisKeyProps[i]),
new CodeDefaultValueExpression(
CodeGenUtilities.GetTypeReference(foreignKeyType, this.ClientProxyGenerator, proxyClass))));
}
}
// if(previous != value)
CodeExpression prevValueExpr = CodeGenUtilities.MakeNotEqual(null, new CodeVariableReferenceExpression("previous"), new CodePropertySetValueReferenceExpression(), this.ClientProxyGenerator.IsCSharp);
// Product previous = Product;
prop.SetStatements.Add(new CodeVariableDeclarationStatement(prop.Type, "previous", new CodePropertyReferenceExpression(new CodeThisReferenceExpression(), pd.Name)));
List<CodeStatement> stmts = new List<CodeStatement>();
// Generate the validation test
CodeStatement validationCode = GeneratePropertySetterValidation(prop.Name);
stmts.Add(validationCode);
if (!isExternal && isBiDirectionalAssociation)
{
List<CodeStatement> detachStmts = new List<CodeStatement>();
// Generate : this._Product.Entity = null;
// This prevents infinite recursion in 1:1 association case,
// and in general ensures that change notifications don't get
// raised for the ref and fk properties during the transition
// time when the ref is set to null (detached) before setting
// to the new value.
detachStmts.Add(new CodeAssignStatement(entityExpr, new CodePrimitiveExpression(null)));
// previous.PurchaseOrderDetails.Remove(this);
detachStmts.Add(detachStatement);
// if (v != null) {
// . . .
// }
stmts.Add(new CodeConditionStatement(CodeGenUtilities.MakeNotEqualToNull(new CodeVariableReferenceExpression("previous")), detachStmts.ToArray()));
}
// this._Product.Entity = value
CodeAssignStatement setEntityStmt = new CodeAssignStatement(
entityExpr, new CodePropertySetValueReferenceExpression());
// if (value != null)
CodeConditionStatement stmt;
if (associationAttribute.IsForeignKey)
{
stmt = new CodeConditionStatement(
CodeGenUtilities.MakeNotEqualToNull(
new CodePropertySetValueReferenceExpression()),
statements1.ToArray(),
statements2.ToArray());
stmts.Add(stmt);
if (!isExternal)
{
// for FK sides of an association, we must set the entity
// reference AFTER FK member sync
stmts.Add(setEntityStmt);
// add the attach statement for bidirectional associations
if (isBiDirectionalAssociation)
{
stmts.Add(new CodeConditionStatement(
CodeGenUtilities.MakeNotEqualToNull(new CodePropertySetValueReferenceExpression()), attachStatement));
}
}
}
else
{
stmts.Add(setEntityStmt);
// add the attach statement for bidirectional associations
if (isBiDirectionalAssociation)
{
stmts.Add(new CodeConditionStatement(
CodeGenUtilities.MakeNotEqualToNull(new CodePropertySetValueReferenceExpression()), attachStatement));
}
stmt = new CodeConditionStatement(
CodeGenUtilities.MakeNotEqualToNull(
new CodePropertySetValueReferenceExpression()),
statements1.ToArray());
}
if (!isExternal)
{
// Generate : this.RaisePropertyChanged(<propName>);
stmts.Add(new CodeExpressionStatement(new CodeMethodInvokeExpression(
new CodeThisReferenceExpression(), "RaisePropertyChanged",
new CodePrimitiveExpression(prop.Name))));
}
prop.SetStatements.Add(new CodeConditionStatement(prevValueExpr, stmts.ToArray()));
}
proxyClass.Members.Add(prop);
proxyClass.Members.Add(filterMethod);
}
private void GenEntityAssocationProperty(CodeTypeDeclaration proxyClass, PropertyDescriptor pd, AssociationAttribute associationAttribute, bool isExternal)
{
// Register property types to prevent conflicts
Type associationType =
IsCollectionType(pd.PropertyType) ?
TypeUtility.GetElementType(pd.PropertyType) :
pd.PropertyType;
// Check if we're in conflict
if (!CodeGenUtilities.RegisterTypeName(associationType, this.Type.Namespace))
{
// Aggressively check for potential conflicts across other DomainService entity types.
IEnumerable<Type> potentialConflicts =
this.ClientProxyGenerator.DomainServiceDescriptions
.SelectMany<DomainServiceDescription, Type>(dsd => dsd.EntityTypes)
.Where(entity => entity.Namespace == associationType.Namespace).Distinct();
foreach (Type potentialConflict in potentialConflicts)
{
// Check if we plan to include any types from this potential conflict's namespace
CodeGenUtilities.RegisterTypeName(potentialConflict, this.Type.Namespace);
}
}
if (!IsCollectionType(pd.PropertyType))
{
this.GenerateSingletonAssociation(proxyClass, pd, associationAttribute, isExternal);
}
else
{
this.GenerateCollectionSideAssociation(proxyClass, pd, associationAttribute, isExternal);
}
}
/// <summary>
/// Verify that the specified entity does not have any modified FK members for the
/// specified composition.
/// </summary>
/// <param name="entity">The child entity to check.</param>
/// <param name="compositionAttribute">The composition attribute.</param>
private static void CheckInvalidChildUpdates(Entity entity, AssociationAttribute compositionAttribute)
{
if (compositionAttribute == null)
{
return;
}
if (entity.EntityState == EntityState.Modified &&
entity.ModifiedProperties.Select(p => p.Name).Intersect(compositionAttribute.OtherKeyMembers).Any())
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Resource.Entity_CantReparentComposedChild, entity));
}
}
/// <summary>
/// Creates an AssociationAttribute for the specified navigation property
/// </summary>
/// <param name="navigationProperty">The navigation property that corresponds to the association (it identifies the end points)</param>
/// <returns>A new AssociationAttribute that describes the given navigation property association</returns>
internal AssociationAttribute CreateAssociationAttribute(NavigationProperty navigationProperty)
{
AssociationInfo assocInfo = this.GetAssociationInfo(navigationProperty);
bool isForeignKey = navigationProperty.FromEndMember.Name == assocInfo.FKRole;
string thisKey;
string otherKey;
if (isForeignKey)
{
thisKey = FormatMemberList(assocInfo.ThisKey);
otherKey = FormatMemberList(assocInfo.OtherKey);
}
else
{
otherKey = FormatMemberList(assocInfo.ThisKey);
thisKey = FormatMemberList(assocInfo.OtherKey);
}
AssociationAttribute assocAttrib = new AssociationAttribute(assocInfo.Name, thisKey, otherKey);
assocAttrib.IsForeignKey = isForeignKey;
return assocAttrib;
}
protected virtual IEnumerable<Attribute> GetEntityMemberAttributes(PropertyDescriptor propertyDescriptor)
{
if (_classMetadata == null)
return null;
var attributes = new List<Attribute>();
//KeyAttributes
if (_classMetadata.Identifier != null)
{
foreach (Column id in _identifierCols)
{
if (id.Name == propertyDescriptor.Name)
{
if (propertyDescriptor.Attributes[typeof(KeyAttribute)] == null)
{
attributes.Add(new KeyAttribute());
}
if (propertyDescriptor.Attributes[typeof(EditableAttribute)] == null)
{
//An identifier is not editable, sometimes anyway it allow an initial value
var editable = new EditableAttribute(false);
if (id.Value is SimpleValue)
editable.AllowInitialValue =
"assigned".Equals(((SimpleValue)id.Value).IdentifierGeneratorStrategy,
StringComparison.InvariantCultureIgnoreCase);
attributes.Add(editable);
}
break;
}
}
}
Property member = _classMetadata.PropertyIterator.FirstOrDefault(x => x.Name == propertyDescriptor.Name);
if (member == null) //If ther's no mapping in nhibernate...
return attributes;
//Required
if ((!member.IsNullable) &&
(propertyDescriptor.PropertyType.IsValueType &&
(propertyDescriptor.Attributes[typeof(RequiredAttribute)] == null)))
{
attributes.Add(new RequiredAttribute());
}
//Association
if (member.Type.IsAssociationType &&
(propertyDescriptor.Attributes[typeof(AssociationAttribute)] == null))
{
string name;
string thisKey = "";
string otherkey = "";
if (member.Type.IsCollectionType)
{
name = propertyDescriptor.ComponentType.FullName + "_" + member.Name;
if (member.Type.ReturnedClass.GetGenericArguments().Length != 1)
{
throw new Exception(
String.Format(
"The property {0} is not a generic collection as expected (like IList<T>)...",
member.Name));
}
Type targetClassType = member.Type.ReturnedClass.GetGenericArguments()[0];
foreach (Column col in _identifierCols)
{
thisKey += (thisKey != "" ? ", " : "") + col.Name;
//*****Naming convention****
//Here I'm assuming that the name of each field in the type that holds the foreign key observe
//the following structure:
string field = member.Name.Replace(Inflector.Pluralize(targetClassType.Name), "") +
propertyDescriptor.ComponentType.Name + "_" + col.Name;
otherkey += (otherkey != "" ? ", " : "") + field;
if (targetClassType.GetProperties(BindingFlags.Public | BindingFlags.Instance).SingleOrDefault(x => x.Name == field) == null)
throw new Exception(String.Format("The class {0} doesn't contain a Property named {1}",
targetClassType.Name, field));
}
}
else //Member is a class type
{
//Key could be composite, cycle every identifier on "the other side"
PersistentClass otherMappingClass = _nhibernateConfiguration.GetClassMapping(member.Type.ReturnedClass);
foreach (Column col in otherMappingClass.Key.ColumnIterator)
{
//Naming Convention:
//The name of each foreign key field be MUST BE the name of the class field + "_" + the name of the key field in the targetclass
thisKey += (thisKey != "" ? ", " : "") + member.Name + "_" + col.Name;
otherkey += (otherkey != "" ? ", " : "") + col.Name;
}
//Check: this name MUST ALWAYS BE the same on the both side of a bi-directional association
name = member.Type.ReturnedClass.FullName
+ "_" + Inflector.Pluralize(member.PersistentClass.NodeName);
}
//CHECK: When do you want to add an IncludeAttribute ?
if (!_classMetadata.IsLazy)
{
var incAttr = new IncludeAttribute();
attributes.Add(incAttr);
}
var attribute = new AssociationAttribute(
name,
thisKey,
otherkey
);
Type fromParent = ForeignKeyDirection.ForeignKeyFromParent.GetType();
attribute.IsForeignKey =
fromParent.IsInstanceOfType(((IAssociationType)member.Type).ForeignKeyDirection);
attributes.Add(attribute);
}
//RoundtripOriginal
if (member == _classMetadata.Version)
attributes.Add(new RoundtripOriginalAttribute());
return attributes.ToArray();
}
/// <summary>
/// For the current ChangeSetEntry, this method returns all other entries in the changeset
/// whose entity was previously a child in the specified composition association.
/// </summary>
/// <param name="association">The association to check.</param>
/// <returns>The resulting collection of entries.</returns>
private IEnumerable<ChangeSetEntry> FindOriginalChildren(AssociationAttribute association)
{
foreach (ChangeSetEntry entry in this._changeSetEntries.Where(p => p.Entity.EntityState == EntityState.Deleted))
{
Entity parent = entry.Entity.Parent;
if (parent == null)
{
// not a child entity
continue;
}
if (parent == this._currentChangeSetEntry.Entity &&
entry.Entity.ParentAssociation.Name == association.Name)
{
// if the current entity is the original parent and the association
// matches, return the entry
yield return entry;
}
}
}
private void GenerateCollectionSideAssociation(CodeTypeDeclaration proxyClass, PropertyDescriptor pd, AssociationAttribute associationAttribute, bool isExternal)
{
CodeTypeReference propType = CodeGenUtilities.GetTypeReference(TypeConstants.EntityCollectionTypeFullName, this.Type.Namespace, false);
CodeTypeReference fldType;
Type elementType = TypeUtility.GetElementType(pd.PropertyType);
if (isExternal)
{
CodeTypeReference externalTypeRef = new CodeTypeReference(elementType.FullName);
propType.TypeArguments.Add(externalTypeRef);
// Note: we set the global flag *after* adding as a TypeArgument
// to override the GenericTypeArgument flag. This is required
// for proper global references.
externalTypeRef.Options = CodeTypeReferenceOptions.GlobalReference;
}
else
{
propType.TypeArguments.Add(
CodeGenUtilities.GetTypeReference(
elementType,
this.ClientProxyGenerator,
proxyClass));
}
fldType = propType;
CodeMemberField fld = new CodeMemberField();
fld.Attributes = MemberAttributes.Private;
fld.Name = CodeGenUtilities.MakeCompliantFieldName(pd.Name);
fld.Type = fldType;
proxyClass.Members.Add(fld);
// --------------------------
// Generate the filter method
// --------------------------
// private bool filter_PurchaseOrderDetails(PurchaseOrderDetail entity) {
// return entity.ProductID == ProductID;
// }
string[] thisKeyProps = associationAttribute.ThisKeyMembers.ToArray();
string[] otherKeyProps = associationAttribute.OtherKeyMembers.ToArray();
CodeMemberMethod filterMethod = this.GenerateFilterMethod(proxyClass, pd.Name, elementType, thisKeyProps, otherKeyProps, isExternal);
CodeMemberProperty prop = new CodeMemberProperty();
prop.Name = pd.Name;
prop.Attributes = MemberAttributes.Public | MemberAttributes.Final;
prop.Type = propType;
prop.HasGet = true;
// Generate <summary> comment for property
string comment = string.Format(CultureInfo.CurrentCulture, Resource.CodeGen_Entity_Collection_Association_Property_Summary_Comment, elementType.Name);
prop.Comments.AddRange(CodeGenUtilities.GenerateSummaryCodeComment(comment, this.ClientProxyGenerator.IsCSharp));
// ----------------------------------------------------------------
// Propagate the custom attributes (except DataMember)
// ----------------------------------------------------------------
List<Attribute> propertyAttributes = pd.ExplicitAttributes().Cast<Attribute>().ToList();
// Here, we check for the existence of [ReadOnly(true)] attributes generated when
// the property does not not have a setter. We want to inject an [Editable(false)]
// attribute into the pipeline.
ReadOnlyAttribute readOnlyAttr = propertyAttributes.OfType<ReadOnlyAttribute>().SingleOrDefault();
if (readOnlyAttr != null && !propertyAttributes.OfType<EditableAttribute>().Any())
{
propertyAttributes.Add(new EditableAttribute(!readOnlyAttr.IsReadOnly));
// REVIEW: should we strip out [ReadOnly] attributes here?
}
CustomAttributeGenerator.GenerateCustomAttributes(
this.ClientProxyGenerator,
proxyClass,
ex => string.Format(CultureInfo.CurrentCulture, Resource.ClientCodeGen_Attribute_ThrewException_CodeTypeMember, ex.Message, prop.Name, proxyClass.Name, ex.InnerException.Message),
propertyAttributes.Where(a => a.GetType() != typeof(DataMemberAttribute)),
prop.CustomAttributes,
prop.Comments);
// Generate "if (fld == null)" test for common use below
CodeExpression isRefNullExpr =
CodeGenUtilities.MakeEqualToNull(
new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), fld.Name));
// Generate a delegate style invoke of our filter method for common use below
CodeExpression filterDelegate =
CodeGenUtilities.MakeDelegateCreateExpression(this.ClientProxyGenerator.IsCSharp, new CodeTypeReference("System.Func"), filterMethod.Name);
// only generate attach and detach when the relation is two-way
PropertyDescriptor reverseAssociationMember = GetReverseAssociation(pd, associationAttribute);
bool isBiDirectionalAssociation = (reverseAssociationMember != null) && this.CanGenerateProperty(reverseAssociationMember);
if (isBiDirectionalAssociation)
{
if (IsCollectionType(pd.PropertyType))
{
CodeMemberMethod attach = this.GenerateAttach(proxyClass, elementType, associationAttribute, pd);
CodeMemberMethod detach = this.GenerateDetach(proxyClass, elementType, associationAttribute, pd);
//// generate :
//// if (_PurchaseOrderDetails == null) {
//// _PurchaseOrderDetails = new EntityCollection<PurchaseOrderDetail>(this, filter_PurchaseOrderDetails, attach_PurchaseOrderDetails, detach_PurchaseOrderDetails);
//// }
CodeExpression attachDelegate =
CodeGenUtilities.MakeDelegateCreateExpression(this.ClientProxyGenerator.IsCSharp, new CodeTypeReference("System.Action"), attach.Name);
CodeExpression detachDelegate =
CodeGenUtilities.MakeDelegateCreateExpression(this.ClientProxyGenerator.IsCSharp, new CodeTypeReference("System.Action"), detach.Name);
CodeAssignStatement initExpr = new CodeAssignStatement(
new CodeFieldReferenceExpression(
new CodeThisReferenceExpression(), fld.Name),
new CodeObjectCreateExpression(
propType,
new CodeThisReferenceExpression(),
new CodePrimitiveExpression(prop.Name),
filterDelegate,
attachDelegate,
detachDelegate));
prop.GetStatements.Add(new CodeConditionStatement(isRefNullExpr, initExpr));
}
}
else
{
CodeAssignStatement initExpr = new CodeAssignStatement(
new CodeFieldReferenceExpression(
new CodeThisReferenceExpression(), fld.Name),
new CodeObjectCreateExpression(
propType,
new CodeThisReferenceExpression(),
new CodePrimitiveExpression(prop.Name),
filterDelegate));
prop.GetStatements.Add(new CodeConditionStatement(isRefNullExpr, initExpr));
}
prop.GetStatements.Add(
new CodeMethodReturnStatement(
new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), fld.Name)));
proxyClass.Members.Add(prop);
proxyClass.Members.Add(filterMethod);
}
public TypePropertyAssociationMetadata(AssociationAttribute associationAttr)
{
Name = associationAttr.Name;
IsForeignKey = associationAttr.IsForeignKey;
_otherKeyMembers = associationAttr.OtherKeyMembers.ToList<string>();
_thisKeyMembers = associationAttr.ThisKeyMembers.ToList<string>();
}
private CodeMemberMethod GenerateDetach(CodeTypeDeclaration proxyClass, Type entityType, AssociationAttribute assoc, PropertyDescriptor pd)
{
// detach method
CodeMemberMethod method = new CodeMemberMethod();
method.Name = "Detach" + pd.Name;
method.Attributes = MemberAttributes.Private;
method.ReturnType = CodeGenUtilities.GetTypeReference(typeof(void), this.ClientProxyGenerator, proxyClass);
CodeParameterDeclarationExpression pdef = new CodeParameterDeclarationExpression(
CodeGenUtilities.GetTypeReference(entityType, this.ClientProxyGenerator, proxyClass),
"entity");
method.Parameters.Add(pdef);
CodeVariableReferenceExpression pref = new CodeVariableReferenceExpression(pdef.Name);
PropertyDescriptor reverseAssociationMember = GetReverseAssociation(pd, assoc);
string revName = reverseAssociationMember.Name;
if (!IsCollectionType(pd.PropertyType))
{
// pref.Prop.Remove(this)
method.Statements.Add(
new CodeExpressionStatement(
new CodeMethodInvokeExpression(
new CodePropertyReferenceExpression(pref, revName),
"Remove",
new CodeThisReferenceExpression())));
}
else
{
// pref.Prop = null
method.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(pref, revName),
new CodePrimitiveExpression(null)));
}
proxyClass.Members.Add(method);
return method;
}