/// <summary>
/// Initializes a new instance of the <see cref="DelegatedJoinBuilder{T,TSource,TQuery}" /> class.
/// </summary>
/// <param name="joinBuilder">
/// The wrapped join builder instance.
/// </param>
/// <param name="query">
/// The query instance.
/// </param>
/// <param name="alias">
/// The alias.
/// </param>
/// <exception cref="ArgumentNullException">
/// The wrapped join builder instance is a null-reference.
/// </exception>
public DelegatedJoinBuilder
(
IJoinBuilder <TSource, TQuery> joinBuilder,
IFilterableQuery <T> query,
string alias
)
{
if (joinBuilder == null)
{
throw new ArgumentNullException("joinBuilder");
}
if (query == null)
{
throw new ArgumentNullException("query");
}
_alias = alias;
_joinBuilder = joinBuilder;
_query = query;
_rebaser = new ExpressionRebaser(typeof(T), _alias);
}
public void ExpresionRebaserThrowsNothingIfExpressionHasTwoParametersAndSecondParamterIsWhereDelegate()
{
Expression <Func <Setting, WhereDelegate, bool> > filter = (x, y) => x.Id == 1;
var visitor = new ExpressionRebaser(typeof(Setting), "setting");
Assert.That(() => visitor.RebaseTo <UserEntity, WhereDelegate, bool>(filter), Throws.Nothing);
}
public void ExpresionRebaserThrowsIfExpressionHasTwoParametersAndSecondParamterIsNotWhereDelegate()
{
Expression <Func <Setting, string, bool> > filter = (x, y) => x.Id == 1;
var visitor = new ExpressionRebaser(typeof(Setting), "setting");
Assert.That(() => visitor.RebaseTo <UserEntity, bool>(filter), Throws.InstanceOf <ArgumentException>());
}
public void ExpresionRebaserThrowsIfExpressionHasMoreThanTwoParameters()
{
Expression <Func <Setting, string, string, bool> > filter = (x, y, z) => x.Id == 1;
var visitor = new ExpressionRebaser(typeof(Setting), "setting");
Assert.That(() => visitor.RebaseTo <UserEntity, bool>(filter), Throws.InstanceOf <ArgumentException>());
}
public void ExpresionRebaserTest()
{
Expression <Func <Setting, bool> > filter = x => x.Id == 1;
var visitor = new ExpressionRebaser(typeof(Setting), "setting");
Expression <Func <UserEntity, bool> > visited = visitor.RebaseTo <UserEntity, bool>(filter);
Assert.That(visited, Is.Not.Null);
Assert.That(visited.ToString(), Is.EqualTo("x => (setting.Id == 1)"));
}
/// <summary>
/// Initializes a new instance of the <see cref="DelegatedFilterableQuery{T,TSource,TQuery}" /> class.
/// </summary>
/// <param name="query">
/// The wrapped query instance.
/// </param>
/// <param name="alias">
/// The alias.
/// </param>
/// <exception cref="ArgumentNullException">
/// The wrapped query instance is a null-reference.
/// </exception>
public DelegatedFilterableQuery
(
TQuery query,
string alias
)
{
if (string.IsNullOrWhiteSpace(alias))
{
throw new ArgumentException("alias is null or white-space", "alias");
}
if (query == null)
{
throw new ArgumentNullException("query");
}
_alias = alias;
_query = query;
_rebaser = new ExpressionRebaser(typeof(T), _alias);
}
public void ExpresionRebaserThrowsIfExpressionIsNull()
{
var visitor = new ExpressionRebaser(typeof(Setting), "setting");
Assert.That(() => visitor.RebaseTo <UserEntity, bool>(null), Throws.InstanceOf <ArgumentNullException>());
}
