/// <summary>
/// This class is responsible for getting the current iterate item object within an iteration. i.e. The property name starts with "[]."
/// We do this by navigating up through the parent nodes to determine which of them are iterate elements.
/// Once found we get the current iteration context item.
/// If "[]." is not specified, the original approach is used of reflecting the parameterObject to the reflection path specified in the property
/// </summary>
/// <param name="ctx"></param>
/// <param name="baseTag"></param>
/// <param name="parameterObject"></param>
/// <returns></returns>
/// <remarks>
/// Created By: Richard Beacroft
/// Created Date: 11\10\2013
/// </remarks>
protected object GetMemberPropertyValue(SqlTagContext ctx, BaseTag baseTag, object parameterObject)
{
if (String.IsNullOrEmpty(baseTag.Property))
{
return(parameterObject);
}
#if dotnet35
var bindingReplacement = ctx.BuildPropertyBindingReplacements(baseTag).FirstOrDefault();
#else
BindingReplacement bindingReplacement = null;
foreach (var replacement in ctx.BuildPropertyBindingReplacements(baseTag))
{
bindingReplacement = replacement;
break;
}
#endif
if (bindingReplacement != null)
{
if (String.IsNullOrEmpty(bindingReplacement.FullPropertyName))
{
return(bindingReplacement.Value);
}
return(_tagPropertyProbe.GetMemberValue(ctx, baseTag, bindingReplacement.FullPropertyName, parameterObject));
}
return(_tagPropertyProbe.GetMemberPropertyValue(ctx, baseTag, parameterObject));
}
/// <summary>
///
/// </summary>
/// <param name="ctx"></param>
/// <param name="tag"></param>
/// <param name="parameterObject"></param>
/// <returns></returns>
/// Updated By: Richard Beacroft
/// Updated Date: 11\10\2013
/// Description: Enables one to be able to have sql text within an iterate element that references the current item as "[]."
/// This is then parsed, along with any reflection path suffix to get the object instance the used is interested in.
/// and add it to an attributes collection for later use.
public override int DoStartFragment(SqlTagContext ctx, SqlTag tag, object parameterObject)
{
var iterate = (IterateContext)ctx.GetAttribute(tag);
if (iterate == null)
{
var baseTag = (BaseTag)tag;
object collection;
if (!string.IsNullOrEmpty(baseTag.Property))
{
// this will either leave the property name as it is, or if it starts with "[].", the
// current iterate context item value will be used, with the rest of the property name
// walked to determine the field/property to get the value from.
collection = _tagPropertyProbe.GetMemberPropertyValue(ctx, baseTag, parameterObject);
}
else
{
collection = parameterObject;
}
iterate = new IterateContext(collection);
ctx.AddAttribute(tag, iterate);
// if there is another item in the iterate array, then we need to include the body.
if (iterate.MoveNext())
{
return(INCLUDE_BODY);
}
iterate.IsCompleted = true;
return(SKIP_BODY);
}
if (iterate.IsCompleted)
{
// reset the context to cater for nested iterations.
ctx.RemoveAttibute(tag);
// now re-process the tag which will re-add the now modified tag element back to the attributes collection.
return(DoStartFragment(ctx, tag, parameterObject));
}
else if (iterate.HasNext || iterate.IsLast)
{
if (iterate.MoveNext())
{
return(INCLUDE_BODY);
}
}
return(SKIP_BODY);
}
/// <summary>
/// This class is responsible for getting the current iterate item object within an iteration. i.e. The property name starts with "[]."
/// We do this by navigating up through the parent nodes to determine which of them are iterate elements.
/// Once found we get the current iteration context item.
/// If "[]." is not specified, the original approach is used of reflecting the parameterObject to the reflection path specified in the property
/// </summary>
/// <param name="ctx"></param>
/// <param name="baseTag"></param>
/// <param name="parameterObject"></param>
/// <returns></returns>
/// <remarks>
/// Created By: Richard Beacroft
/// Created Date: 11\10\2013
/// </remarks>
protected object GetMemberPropertyValue(SqlTagContext ctx, BaseTag baseTag, object parameterObject)
{
if (String.IsNullOrEmpty(baseTag.Property))
{
return(parameterObject);
}
var bindingReplacement = ctx.BuildPropertyBindingReplacements(baseTag).FirstOrDefault();
if (bindingReplacement != null)
{
if (String.IsNullOrEmpty(bindingReplacement.FullPropertyName))
{
return(bindingReplacement.Value);
}
return(_tagPropertyProbe.GetMemberValue(ctx, baseTag, bindingReplacement.FullPropertyName, parameterObject));
}
return(_tagPropertyProbe.GetMemberPropertyValue(ctx, baseTag, parameterObject));
}