/// <summary>
/// Initializes a new instance of the <see cref="JsonInsert{T}"/> class.
/// </summary>
/// <param name="databaseContext">
/// The database context.
/// </param>
public JsonInsert([NotNull] IDatabaseContext databaseContext)
: base(Singleton <JsonCommandFactory> .Instance, databaseContext)
{
if (databaseContext == null)
{
throw new ArgumentNullException(nameof(databaseContext));
}
this.nameQualifier = this.DatabaseContext.RepositoryAdapter.NameQualifier;
}
/// <summary>
/// The mock command provider.
/// </summary>
/// <param name="items">
/// The merge items.
/// </param>
/// <param name="definitionProvider">
/// The definition provider.
/// </param>
/// <param name="nameQualifier">
/// The name qualifier.
/// </param>
/// <typeparam name="T">
/// The type of item in the list to create an <see cref="IDbTableCommandFactory"/> mock for.
/// </typeparam>
/// <returns>
/// The <see cref="Mock"/>.
/// </returns>
public static Mock <IDbTableCommandFactory> MockCommandFactory <T>(
[NotNull] this IReadOnlyCollection <T> items,
[NotNull] IEntityDefinitionProvider definitionProvider,
[NotNull] INameQualifier nameQualifier)
{
if (items == null)
{
throw new ArgumentNullException(nameof(items));
}
if (definitionProvider == null)
{
throw new ArgumentNullException(nameof(definitionProvider));
}
if (nameQualifier == null)
{
throw new ArgumentNullException(nameof(nameQualifier));
}
var structureDefinition = definitionProvider.Resolve <T>();
var orderedAttributes = structureDefinition.ReturnableAttributes.OrderBy(definition => definition.Ordinal).ToList();
var reader = items.MockDataReaderForList(orderedAttributes);
var command = new Mock <IDbCommand>();
command.Setup(dbCommand => dbCommand.ExecuteReader()).Returns(reader.Object);
var commandProvider = new Mock <IDbTableCommandFactory>();
var databaseContext = new Mock <IDatabaseContext>();
var repositoryAdapter = new Mock <IRepositoryAdapter>();
repositoryAdapter.Setup(adapter => adapter.NameQualifier).Returns(nameQualifier);
repositoryAdapter.Setup(adapter => adapter.DefinitionProvider).Returns(definitionProvider);
databaseContext.Setup(context => context.RepositoryAdapter).Returns(repositoryAdapter.Object);
////commandProvider.Setup(provider => provider.DatabaseContext).Returns(databaseContext.Object);
////commandProvider
//// .Setup(provider => provider.Create(It.IsAny<ITableCommand>(), It.IsAny<DataTable>(), It.IsAny<IDbTransaction>()))
//// .Returns(command.Object);
commandProvider
.Setup(provider => provider.Create(It.IsAny <IDatabaseContext>(), It.IsAny <string>(), It.IsAny <string>(), It.IsAny <IEnumerable <T> >()))
.Returns(command.Object);
return(commandProvider);
}
public SqlAnalyzer(string connectionString, INameQualifier nameQualifier = null, TimeSpan cacheDuration = default(TimeSpan))
{
nameQualifier = nameQualifier ?? new SqlNameQualifier();
if(cacheDuration == default(TimeSpan))
cacheDuration = _defaultCacheDuration();
_connectionString = connectionString;
NameQualifier = nameQualifier;
// We use function references instead of directly exposing the functions so
// that we can build in caching without much work.
// We'll do caching using Memoize - it'll cache the results of the function
// for as long as cacheDuration.
// Also, in some subclasses (ie, SqlMetaAnalyzer), we implement a different
// caching scheme - using these function references lets us do that without
// having to change anything here.
// Why didn't we just do this through polymorphism, you ask?
// Well, if we did, we wouldn't be able to compose our functions easily - we can't
// override a function and just say "hey, use a memoized version of this function instead
// of the base-class version" - we'd have to implement memoization from scratch in each
// method. That's just a silly waste of time. Also, when we subclass, we'd have to implement
// all of the memoization and cache invalidation we do in SqlMetaAnalyzer for each of these
// methods again! Polymorphism doesn't allow us to do any manipulation of our functions - all you
// can do is reimplement them, you can't get at the underlying binding and change it. That is to say,
// there's no way using override to say "replace this method with a memoized version of it" - all you
// can do is implement the guts of memoize inside your function, and repeat it for every function
// you want to do the same thing to.
var schemaEvents = Observable.FromEvent<string>(d => OnInvalidateSchemaCache += d, d => OnInvalidateSchemaCache -= d);
var tableEvents = Observable.FromEvent<string>(d => OnInvalidateTableCache += d, d => OnInvalidateTableCache -= d);
_getAutonumberKey = new Func<string, string>(_getAutonumberKeyFromDB).Memoize(cacheDuration, tableEvents);
_getFieldTypes = new Func<string, Dictionary<string,SqlColumnType>>(_getFieldTypesFromDB).Memoize(cacheDuration, tableEvents);
_getPrimaryKeys = new Func<string, ICollection<string>>(_getPrimaryKeysFromDB).Memoize(cacheDuration, tableEvents);
_tableExists = new Func<string, bool>(_tableExistsFromDB).Memoize(cacheDuration, tableEvents);
_schemaExists = new Func<string, bool>(_schemaExistsFromDb).Memoize(cacheDuration, schemaEvents);
}
/// <summary>
/// Initializes a new instance of the <see cref="JoinClause"/> class.
/// </summary>
/// <param name="definitionProvider">
/// The definition provider.
/// </param>
/// <param name="nameQualifier">
/// The SQL name qualifier.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="definitionProvider"/> or <paramref name="nameQualifier"/> is null.
/// </exception>
public JoinClause([NotNull] IEntityDefinitionProvider definitionProvider, [NotNull] INameQualifier nameQualifier)
{
this.definitionProvider = definitionProvider ?? throw new ArgumentNullException(nameof(definitionProvider));
this.nameQualifier = nameQualifier ?? throw new ArgumentNullException(nameof(nameQualifier));
}
