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/reportbuilder/classes/local/aggregation/ -> groupconcat.php (source)

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Defines 1 class

groupconcat:: (6 methods):
  get_name()
  compatible()
  sortable()
  get_column_field_sql()
  get_field_sql()
  format_value()


Class: groupconcat  - X-Ref

Column group concatenation aggregation type

get_name()   X-Ref
Return aggregation name

return: lang_string

compatible(int $columntype)   X-Ref
This aggregation can be performed on all non-timestamp columns

param: int $columntype
return: bool

sortable(bool $columnsortable)   X-Ref
We cannot sort this aggregation type

param: bool $columnsortable
return: bool

get_column_field_sql(array $sqlfields)   X-Ref
Override base method to ensure all SQL fields are concatenated together if there are multiple

param: array $sqlfields
return: string

get_field_sql(string $field, int $columntype)   X-Ref
Return the aggregated field SQL

param: string $field
param: int $columntype
return: string

format_value($value, array $values, array $callbacks, int $columntype)   X-Ref
Return formatted value for column when applying aggregation, note we need to split apart the concatenated string
and apply callbacks to each concatenated value separately

param: mixed $value
param: array $values
param: array $callbacks
param: int $columntype
return: mixed