public void TestThrowsWhenPathsCountGreaterThanExpressionParametersCount()
{
Expression <Func <A, string> > pathFromRoot1 = a => a.S;
Expression <Func <B, D> > pathFromRoot2 = b => b.C[1].D;
Expression <Func <D, string> > exp = d => d.S;
var merger = new ExpressionMerger(pathFromRoot1, pathFromRoot2);
Assert.Throws <ArgumentException>(() => merger.Merge(exp));
}
public static void BatchSet <TSourceRoot, TSourceChild, TDestRoot, TDestChild, TDestValue>(
this ConverterConfigurator <TSourceRoot, TSourceChild, TDestRoot, TDestChild, TDestValue> configurator,
Expression <Func <TDestValue, TSourceChild, Batch> > batch)
{
var methodReplacer = new MethodReplacer(MutatorsHelperFunctions.EachMethod, MutatorsHelperFunctions.CurrentMethod);
var pathToSourceChild = (Expression <Func <TSourceRoot, TSourceChild> >)methodReplacer.Visit(configurator.PathToSourceChild);
var pathToChild = (Expression <Func <TDestRoot, TDestChild> >)methodReplacer.Visit(configurator.PathToChild);
var merger = new ExpressionMerger(pathToSourceChild);
var initializers = ((ListInitExpression)batch.Body).Initializers;
Expression primaryKeyIsEmpty = null;
foreach (var initializer in initializers)
{
Expression dest = initializer.Arguments[0];
var clearedDest = ClearNotNull(dest);
if (clearedDest != null)
{
var current = Expression.Equal(clearedDest, Expression.Constant(null, clearedDest.Type));
primaryKeyIsEmpty = primaryKeyIsEmpty == null ? current : Expression.AndAlso(primaryKeyIsEmpty, current);
}
dest = clearedDest ?? dest;
if (dest.Type != typeof(object))
{
dest = Expression.Convert(dest, typeof(object));
}
Expression source = methodReplacer.Visit(initializer.Arguments[1]);
// if(source.Type != typeof(object))
// source = Expression.Convert(source, typeof(object));
LambdaExpression value = merger.Merge(Expression.Lambda(source, batch.Parameters[1]));
if (dest.NodeType == ExpressionType.Convert)
{
dest = ((UnaryExpression)dest).Operand;
}
dest = pathToChild.Merge(Expression.Lambda(dest, batch.Parameters[0])).Body;
configurator.ToRoot().SetMutator(dest, EqualsToConfiguration.Create(typeof(TDestRoot), value, null));
//configurator.Target(Expression.Lambda<Func<TDestValue, object>>(dest, batch.Parameters[0])).SetMutator(EqualsToConfiguration.Create(typeof(TDestRoot), value, null));
}
if (primaryKeyIsEmpty == null)
{
return;
}
var condition = (Expression <Func <TDestRoot, bool?> >)pathToChild.Merge(Expression.Lambda(Expression.Convert(methodReplacer.Visit(primaryKeyIsEmpty), typeof(bool?)), batch.Parameters[0]));
foreach (var initializer in initializers)
{
Expression dest = initializer.Arguments[0];
if (ClearNotNull(dest) != null)
{
continue;
}
if (dest.Type != typeof(object))
{
dest = Expression.Convert(dest, typeof(object));
}
if (dest.NodeType == ExpressionType.Convert)
{
dest = ((UnaryExpression)dest).Operand;
}
dest = pathToChild.Merge(Expression.Lambda(dest, batch.Parameters[0])).Body;
configurator.ToRoot().SetMutator(dest, NullifyIfConfiguration.Create(condition));
//configurator.Target(Expression.Lambda<Func<TDestValue, object>>(dest, batch.Parameters[0])).SetMutator(NullifyIfConfiguration.Create(condition));
}
}