public void TestPredicateTree()
{
var builder = new PredicateTreeBuilder(typeof(Dto));
builder.Has("Id", ExpressionOperator.Equals, 1)
.And("Name", ExpressionOperator.IsNotNullOrEmpty, null)
.And(inner => inner
.Has("Birthdate.Year", ExpressionOperator.LessThanOrEqual, 2000)
.Or("TimeSince.Hours", ExpressionOperator.GreaterThan, 1))
.Or("Active", ExpressionOperator.DoesNotEqual, false);
var e = new ExpressionNodeVisitor().VisitLambda <Dto>(
builder.RootNode,
new PredicateBuilderConfiguration()
.WithItParameterName("x")
);
Expression <Func <Dto, bool> > testExpression = (Dto x) =>
((x.Id == 1 && !(x.Name == "" || x.Name == null)) && (x.Birthdate.Year <= 2000 || x.TimeSince.Hours > 1)) || x.Active != true;
Assert.AreEqual(
testExpression.ToString(),
e.ToString());
Assert.True(testExpression.CheckEquals(e));
}
protected internal virtual ExpressionNode VisitChildren(ExpressionNodeVisitor visitor)
{
return(this);
}
protected internal virtual ExpressionNode Accept(ExpressionNodeVisitor visitor)
{
return(visitor.VisitExtension(this));
}
protected internal virtual ExpressionNode VisitChildren(ExpressionNodeVisitor visitor)
{
return this;
}
protected internal virtual ExpressionNode Accept(ExpressionNodeVisitor visitor)
{
return visitor.VisitExtension(this);
}
