private static bool ReadyForFurtherValidation(ReferentialConstraintRoleElement role)
{
if (role == null)
{
return(false);
}
if (role.End == null)
{
return(false);
}
if (role.RoleProperties.Count == 0)
{
return(false);
}
foreach (var propRef in role.RoleProperties)
{
if (propRef.Property == null)
{
return(false);
}
}
return(true);
}
/// <summary>
/// Resolves the given property names to the property in the item
/// Also checks whether the properties form the key for the given type and whether all the properties are nullable or not
/// </summary>
/// <param name="roleElement"> </param>
/// <param name="itemType"> </param>
/// <param name="isKeyProperty"> </param>
/// <param name="areAllPropertiesNullable"> </param>
/// <param name="isSubsetOfKeyProperties"> </param>
private static void IsKeyProperty(
ReferentialConstraintRoleElement roleElement, SchemaEntityType itemType,
out bool isKeyProperty,
out bool areAllPropertiesNullable,
out bool isAnyPropertyNullable,
out bool isSubsetOfKeyProperties)
{
isKeyProperty = true;
areAllPropertiesNullable = true;
isAnyPropertyNullable = false;
isSubsetOfKeyProperties = true;
if (itemType.KeyProperties.Count
!= roleElement.RoleProperties.Count)
{
isKeyProperty = false;
}
// Checking that ToProperties must be the key properties in the entity type referred by the ToRole
for (var i = 0; i < roleElement.RoleProperties.Count; i++)
{
// Once we find that the properties in the constraint are not a subset of the
// Key, one need not search for it every time
if (isSubsetOfKeyProperties)
{
var foundKeyProperty = false;
// All properties that are defined in ToProperties must be the key property on the entity type
for (var j = 0; j < itemType.KeyProperties.Count; j++)
{
if (itemType.KeyProperties[j].Property
== roleElement.RoleProperties[i].Property)
{
foundKeyProperty = true;
break;
}
}
if (!foundKeyProperty)
{
isKeyProperty = false;
isSubsetOfKeyProperties = false;
}
}
areAllPropertiesNullable &= roleElement.RoleProperties[i].Property.Nullable;
isAnyPropertyNullable |= roleElement.RoleProperties[i].Property.Nullable;
}
}
internal void HandleReferentialConstraintDependentRoleElement(XmlReader reader)
{
_dependentRole = new ReferentialConstraintRoleElement(this);
_dependentRole.Parse(reader);
}
internal void HandleReferentialConstraintPrincipalRoleElement(XmlReader reader)
{
_principalRole = new ReferentialConstraintRoleElement(this);
_principalRole.Parse(reader);
}
internal void HandleReferentialConstraintDependentRoleElement(XmlReader reader)
{
_dependentRole = new ReferentialConstraintRoleElement(this);
_dependentRole.Parse(reader);
}
internal void HandleReferentialConstraintPrincipalRoleElement(XmlReader reader)
{
_principalRole = new ReferentialConstraintRoleElement(this);
_principalRole.Parse(reader);
}
/// <summary>
/// Resolves the given property names to the property in the item
/// Also checks whether the properties form the key for the given type and whether all the properties are nullable or not
/// </summary>
/// <param name="roleElement"> </param>
/// <param name="itemType"> </param>
/// <param name="isKeyProperty"> </param>
/// <param name="areAllPropertiesNullable"> </param>
/// <param name="isSubsetOfKeyProperties"> </param>
private static void IsKeyProperty(
ReferentialConstraintRoleElement roleElement, SchemaEntityType itemType,
out bool isKeyProperty,
out bool areAllPropertiesNullable,
out bool isAnyPropertyNullable,
out bool isSubsetOfKeyProperties)
{
isKeyProperty = true;
areAllPropertiesNullable = true;
isAnyPropertyNullable = false;
isSubsetOfKeyProperties = true;
if (itemType.KeyProperties.Count
!= roleElement.RoleProperties.Count)
{
isKeyProperty = false;
}
// Checking that ToProperties must be the key properties in the entity type referred by the ToRole
for (var i = 0; i < roleElement.RoleProperties.Count; i++)
{
// Once we find that the properties in the constraint are not a subset of the
// Key, one need not search for it every time
if (isSubsetOfKeyProperties)
{
var foundKeyProperty = false;
// All properties that are defined in ToProperties must be the key property on the entity type
for (var j = 0; j < itemType.KeyProperties.Count; j++)
{
if (itemType.KeyProperties[j].Property
== roleElement.RoleProperties[i].Property)
{
foundKeyProperty = true;
break;
}
}
if (!foundKeyProperty)
{
isKeyProperty = false;
isSubsetOfKeyProperties = false;
}
}
areAllPropertiesNullable &= roleElement.RoleProperties[i].Property.Nullable;
isAnyPropertyNullable |= roleElement.RoleProperties[i].Property.Nullable;
}
}
private static bool ReadyForFurtherValidation(ReferentialConstraintRoleElement role)
{
if (role == null)
{
return false;
}
if (role.End == null)
{
return false;
}
if (role.RoleProperties.Count == 0)
{
return false;
}
foreach (var propRef in role.RoleProperties)
{
if (propRef.Property == null)
{
return false;
}
}
return true;
}