private void GenerateIndependentAssociationType(
AssociationType associationType,
DbDatabaseMapping databaseMapping)
{
AssociationEndMember principalEnd;
AssociationEndMember dependentEnd;
if (!associationType.TryGuessPrincipalAndDependentEnds(out principalEnd, out dependentEnd))
{
if (!associationType.IsPrincipalConfigured())
{
throw Error.UnableToDeterminePrincipal((object)EntityTypeExtensions.GetClrType(associationType.SourceEnd.GetEntityType()), (object)EntityTypeExtensions.GetClrType(associationType.TargetEnd.GetEntityType()));
}
principalEnd = associationType.SourceEnd;
dependentEnd = associationType.TargetEnd;
}
EntityTypeMapping mappingInHierarchy = StructuralTypeMappingGenerator.GetEntityTypeMappingInHierarchy(databaseMapping, dependentEnd.GetEntityType());
EntityType table = mappingInHierarchy.MappingFragments.First <MappingFragment>().Table;
AssociationSetMapping associationSetMapping = AssociationTypeMappingGenerator.GenerateAssociationSetMapping(associationType, databaseMapping, principalEnd, dependentEnd, table);
this.GenerateIndependentForeignKeyConstraint(databaseMapping, principalEnd.GetEntityType(), dependentEnd.GetEntityType(), table, associationSetMapping, associationSetMapping.SourceEndMapping, associationType.Name, principalEnd, false);
foreach (EdmProperty keyProperty in dependentEnd.GetEntityType().KeyProperties())
{
associationSetMapping.TargetEndMapping.AddPropertyMapping(new ScalarPropertyMapping(keyProperty, mappingInHierarchy.GetPropertyMapping(keyProperty).ColumnProperty));
}
}
private void GenerateManyToManyAssociation(
AssociationType associationType,
DbDatabaseMapping databaseMapping)
{
EntityType entityType1 = associationType.SourceEnd.GetEntityType();
EntityType entityType2 = associationType.TargetEnd.GetEntityType();
EntityType dependentTable = databaseMapping.Database.AddTable(entityType1.Name + entityType2.Name);
AssociationSetMapping associationSetMapping = AssociationTypeMappingGenerator.GenerateAssociationSetMapping(associationType, databaseMapping, associationType.SourceEnd, associationType.TargetEnd, dependentTable);
this.GenerateIndependentForeignKeyConstraint(databaseMapping, entityType1, entityType2, dependentTable, associationSetMapping, associationSetMapping.SourceEndMapping, associationType.SourceEnd.Name, (AssociationEndMember)null, true);
this.GenerateIndependentForeignKeyConstraint(databaseMapping, entityType2, entityType1, dependentTable, associationSetMapping, associationSetMapping.TargetEndMapping, associationType.TargetEnd.Name, (AssociationEndMember)null, true);
}
public void Generate(AssociationType associationType, DbDatabaseMapping databaseMapping)
{
if (associationType.Constraint != null)
{
AssociationTypeMappingGenerator.GenerateForeignKeyAssociationType(associationType, databaseMapping);
}
else if (associationType.IsManyToMany())
{
this.GenerateManyToManyAssociation(associationType, databaseMapping);
}
else
{
this.GenerateIndependentAssociationType(associationType, databaseMapping);
}
}
