// <summary>
// Identifies if we need to explicitly state each schema filter entry or leverage 'wildcard' filter entries
// so that we don't overload the provider.
// TODO: There are several interesting possibilities here to improve performance if the language of the
// EntityStoreSchemaFilterEntry allows it (i.e. identifying patterns in what the user has selected and
// returning back a minimal set of schema filter entries
// </summary>
// <param name="schemaFilterPolicy">The policy used for optimizing changes. We will store a </param>
internal IList <EntityStoreSchemaFilterEntry> CollapseAndOptimize(SchemaFilterPolicy schemaFilterPolicy)
{
var optimizedFilterEntryList = new List <EntityStoreSchemaFilterEntry>();
//
// Add filter entries. Since catalog & schema can be null values, we pass null values for them into the allow-all/exclude-all filters.
// Passing in null will mean the filter will "accept" any value, including string values. Passing in "%" will mean it will accept any
// non-null string value.
//
// Add filter entries for tables
switch (schemaFilterPolicy.Tables)
{
case ObjectFilterPolicy.Allow:
{
// Policy is to allow new tables, so excluded tables must be written as exceptions
optimizedFilterEntryList.AddRange(ExcludedTableEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Allow));
break;
}
case ObjectFilterPolicy.Exclude:
{
// Policy is to exclude new tables, so included tables must be written as exceptions
optimizedFilterEntryList.AddRange(IncludedTableEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Exclude));
break;
}
default:
{
// If we have some unknown policy, assert and use the optimal policy...
Debug.Assert(
schemaFilterPolicy.Tables == ObjectFilterPolicy.Optimal,
"Unknown ObjectFilterPolicy type for tables: " + schemaFilterPolicy.Tables.ToString());
// Pick whatever gives us the smallest changeset
if (IncludedTableEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Exclude));
}
else if (ExcludedTableEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Allow));
}
else
{
optimizedFilterEntryList.AddRange(
ExcludedTableEntries.Count < IncludedTableEntries.Count ? ExcludedTableEntries : IncludedTableEntries);
}
break;
}
}
// add filter entries for views
switch (schemaFilterPolicy.Views)
{
case ObjectFilterPolicy.Allow:
{
// Policy is to allow new views, so excluded views must be written as exceptions
optimizedFilterEntryList.AddRange(ExcludedViewEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Allow));
break;
}
case ObjectFilterPolicy.Exclude:
{
// Policy is to exclude new views, so included views must be written as exceptions
optimizedFilterEntryList.AddRange(IncludedViewEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Exclude));
break;
}
default:
{
// If we have some unknown policy, assert and use the optimal policy...
Debug.Assert(
schemaFilterPolicy.Views == ObjectFilterPolicy.Optimal,
"Unknown ObjectFilterPolicy type for views: " + schemaFilterPolicy.Views.ToString());
// Pick whatever gives us the smallest changeset
if (IncludedViewEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Exclude));
}
else if (ExcludedViewEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Allow));
}
else
{
optimizedFilterEntryList.AddRange(
ExcludedViewEntries.Count < IncludedViewEntries.Count ? ExcludedViewEntries : IncludedViewEntries);
}
break;
}
}
// add filter entries for sprocs
switch (schemaFilterPolicy.Sprocs)
{
case ObjectFilterPolicy.Allow:
{
// Policy is to allow new sprocs, so excluded sprocs must be written as exceptions
optimizedFilterEntryList.AddRange(ExcludedSprocEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Allow));
break;
}
case ObjectFilterPolicy.Exclude:
{
// Policy is to exclude new sprocs, so included sprocs must be written as exceptions
optimizedFilterEntryList.AddRange(IncludedSprocEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Exclude));
break;
}
default:
{
// If we have some unknown policy, assert and use the optimal policy...
Debug.Assert(
schemaFilterPolicy.Sprocs == ObjectFilterPolicy.Optimal,
"Unknown ObjectFilterPolicy type for sprocs: " + schemaFilterPolicy.Sprocs.ToString());
// Pick whatever gives us the smallest changeset
if (IncludedSprocEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Exclude));
}
else if (ExcludedSprocEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Allow));
}
else
{
optimizedFilterEntryList.AddRange(
ExcludedSprocEntries.Count < IncludedSprocEntries.Count ? ExcludedSprocEntries : IncludedSprocEntries);
}
break;
}
}
return(optimizedFilterEntryList);
}
// <summary>
// Identifies if we need to explicitly state each schema filter entry or leverage 'wildcard' filter entries
// so that we don't overload the provider.
// TODO: There are several interesting possibilities here to improve performance if the language of the
// EntityStoreSchemaFilterEntry allows it (i.e. identifying patterns in what the user has selected and
// returning back a minimal set of schema filter entries
// </summary>
// <param name="schemaFilterPolicy">The policy used for optimizing changes. We will store a </param>
internal IList<EntityStoreSchemaFilterEntry> CollapseAndOptimize(SchemaFilterPolicy schemaFilterPolicy)
{
var optimizedFilterEntryList = new List<EntityStoreSchemaFilterEntry>();
//
// Add filter entries. Since catalog & schema can be null values, we pass null values for them into the allow-all/exclude-all filters.
// Passing in null will mean the filter will "accept" any value, including string values. Passing in "%" will mean it will accept any
// non-null string value.
//
// Add filter entries for tables
switch (schemaFilterPolicy.Tables)
{
case ObjectFilterPolicy.Allow:
{
// Policy is to allow new tables, so excluded tables must be written as exceptions
optimizedFilterEntryList.AddRange(ExcludedTableEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Allow));
break;
}
case ObjectFilterPolicy.Exclude:
{
// Policy is to exclude new tables, so included tables must be written as exceptions
optimizedFilterEntryList.AddRange(IncludedTableEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Exclude));
break;
}
default:
{
// If we have some unknown policy, assert and use the optimal policy...
Debug.Assert(
schemaFilterPolicy.Tables == ObjectFilterPolicy.Optimal,
"Unknown ObjectFilterPolicy type for tables: " + schemaFilterPolicy.Tables.ToString());
// Pick whatever gives us the smallest changeset
if (IncludedTableEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Exclude));
}
else if (ExcludedTableEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Table, EntityStoreSchemaFilterEffect.Allow));
}
else
{
optimizedFilterEntryList.AddRange(
ExcludedTableEntries.Count < IncludedTableEntries.Count ? ExcludedTableEntries : IncludedTableEntries);
}
break;
}
}
// add filter entries for views
switch (schemaFilterPolicy.Views)
{
case ObjectFilterPolicy.Allow:
{
// Policy is to allow new views, so excluded views must be written as exceptions
optimizedFilterEntryList.AddRange(ExcludedViewEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Allow));
break;
}
case ObjectFilterPolicy.Exclude:
{
// Policy is to exclude new views, so included views must be written as exceptions
optimizedFilterEntryList.AddRange(IncludedViewEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Exclude));
break;
}
default:
{
// If we have some unknown policy, assert and use the optimal policy...
Debug.Assert(
schemaFilterPolicy.Views == ObjectFilterPolicy.Optimal,
"Unknown ObjectFilterPolicy type for views: " + schemaFilterPolicy.Views.ToString());
// Pick whatever gives us the smallest changeset
if (IncludedViewEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Exclude));
}
else if (ExcludedViewEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.View, EntityStoreSchemaFilterEffect.Allow));
}
else
{
optimizedFilterEntryList.AddRange(
ExcludedViewEntries.Count < IncludedViewEntries.Count ? ExcludedViewEntries : IncludedViewEntries);
}
break;
}
}
// add filter entries for sprocs
switch (schemaFilterPolicy.Sprocs)
{
case ObjectFilterPolicy.Allow:
{
// Policy is to allow new sprocs, so excluded sprocs must be written as exceptions
optimizedFilterEntryList.AddRange(ExcludedSprocEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Allow));
break;
}
case ObjectFilterPolicy.Exclude:
{
// Policy is to exclude new sprocs, so included sprocs must be written as exceptions
optimizedFilterEntryList.AddRange(IncludedSprocEntries);
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Exclude));
break;
}
default:
{
// If we have some unknown policy, assert and use the optimal policy...
Debug.Assert(
schemaFilterPolicy.Sprocs == ObjectFilterPolicy.Optimal,
"Unknown ObjectFilterPolicy type for sprocs: " + schemaFilterPolicy.Sprocs.ToString());
// Pick whatever gives us the smallest changeset
if (IncludedSprocEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Exclude));
}
else if (ExcludedSprocEntries.Count == 0)
{
optimizedFilterEntryList.Add(
new EntityStoreSchemaFilterEntry(
null, null, "%", EntityStoreSchemaFilterObjectTypes.Function, EntityStoreSchemaFilterEffect.Allow));
}
else
{
optimizedFilterEntryList.AddRange(
ExcludedSprocEntries.Count < IncludedSprocEntries.Count ? ExcludedSprocEntries : IncludedSprocEntries);
}
break;
}
}
return optimizedFilterEntryList;
}
