public AggregateResult Parse(IEnumerable <AggregateAttribute> header)
{
NodeTree nodeTree = NodeParser.Parse(this.Schema, header);
Node valueNode = nodeTree.Items.FirstOrDefault(this.IsResultNode);
Node itemNode = nodeTree.Items.FirstOrDefault(this.IsResultListNode);
AggregateResult result = new AggregateResult(this.Schema);
if (itemNode != null)
{
result.Value = this.CreateReader(result, itemNode);
result.Target = new AggregateTarget()
{
AddMethod = itemNode.Metadata.Parent.Composition.Add,
NewList = itemNode.Metadata.Parent.Composition.Construct,
};
}
else
{
result.Value = this.CreateReader(result, valueNode);
}
return(result);
}
public ListResult Parse(IEnumerable <ColumnAttribute> header)
{
NodeTree nodeTree = NodeParser.Parse(this.Schema, header);
ListResult result = new ListResult(this.Schema, this.QueryType);
this.AddWriters(result, nodeTree);
this.AddAggregates(result, nodeTree);
return(result);
}
public EnumerateResult Parse(IEnumerable <ColumnAttribute> header)
{
NodeTree nodeTree = NodeParser.Parse(this.Schema, header);
Node valueNode = nodeTree.Items.FirstOrDefault(this.IsResultNode);
Node listNode = nodeTree.Items.FirstOrDefault(this.IsResultListNode);
EnumerateResult result = new EnumerateResult(this.Schema);
result.Value = this.CreateReader(result, listNode ?? valueNode);
return(result);
}
