public virtual bool CompatibleWithModel(
InternalContext internalContext,
ModelHashCalculator modelHashCalculator,
bool throwIfNoMetadata,
DatabaseExistenceState existenceState = DatabaseExistenceState.Unknown)
{
if (internalContext.CodeFirstModel == null)
{
if (throwIfNoMetadata)
{
throw Error.Database_NonCodeFirstCompatibilityCheck();
}
return(true);
}
VersionedModel model = internalContext.QueryForModel(existenceState);
if (model != null)
{
return(internalContext.ModelMatches(model));
}
string a = internalContext.QueryForModelHash();
if (a != null)
{
return(string.Equals(a, modelHashCalculator.Calculate(internalContext.CodeFirstModel), StringComparison.Ordinal));
}
if (throwIfNoMetadata)
{
throw Error.Database_NoDatabaseMetadata();
}
return(true);
}
public virtual bool CompatibleWithModel(
InternalContext internalContext, ModelHashCalculator modelHashCalculator,
bool throwIfNoMetadata, DatabaseExistenceState existenceState = DatabaseExistenceState.Unknown)
{
DebugCheck.NotNull(internalContext);
DebugCheck.NotNull(modelHashCalculator);
if (internalContext.CodeFirstModel == null)
{
if (throwIfNoMetadata)
{
throw Error.Database_NonCodeFirstCompatibilityCheck();
}
return(true);
}
var model = internalContext.QueryForModel(existenceState);
if (model != null)
{
return(internalContext.ModelMatches(model));
}
// Migrations history was not found in the database so fall back to doing a model hash compare
// to deal with databases created using EF 4.1 and 4.2.
var databaseModelHash = internalContext.QueryForModelHash();
if (databaseModelHash == null)
{
if (throwIfNoMetadata)
{
throw Error.Database_NoDatabaseMetadata();
}
return(true);
}
return(String.Equals(
databaseModelHash, modelHashCalculator.Calculate(internalContext.CodeFirstModel),
StringComparison.Ordinal));
}
