public Expression Build(IFilterChoice filter, Expression itemExpression)
{
Expression?filterExpr = null;
switch (filter)
{
case AndFilter af:
filterExpr = BuildAndFilter(af, itemExpression);
break;
case OrFilter of:
filterExpr = BuildOrFilter(of, itemExpression);
break;
case PresentFilter pf:
filterExpr = BuildPresentFilter(pf, itemExpression);
break;
case EqualityMatchFilter eq:
filterExpr = BuildEqualityFilter(eq, itemExpression);
break;
case SubstringFilter sf:
filterExpr = BuildSubstringFilter(sf, itemExpression);
break;
default:
throw new NotImplementedException("Filter for " + filter.GetType() + " is not implemented");
}
return(BuildWithBaseFilter(filterExpr, itemExpression));
}
public void TestBuild(IFilterChoice filter, string expected)
{
ParameterExpression paramExpression = Expression.Parameter(typeof(AppUser));
SearchExpressionBuilder builder = new SearchExpressionBuilder();
Expression result = builder.Build(filter, paramExpression);
Assert.Equal(expected, result.ToString());
}