MongoCollectiongroup()

Runs a Group command

Usage

STRUCTURE = MongoCollectiongroup( datasource, collection, key, cond, reduce, initial, finalize )
Argument Summary
datasource datasource name. Name previously created using MongoRegister
collection collection name
key key
cond condition on query
reduce javascript reduce function
initial initial value for first match on a key
finalize finalize function in javascript code [optional]

Calling

Supports named-parameter calling allowing you to use the function like:

MongoCollectiongroup(
   datasource=?, 
   collection=?, 
   key=?, 
   cond=?, 
   reduce=?, 
   initial=?, 
   finalize=?
);

Supports passing parameters as a structure using ArgumentCollection:

MongoCollectiongroup( ArgumentCollection={
   datasource : ?, 
   collection : ?, 
   key : ?, 
   cond : ?, 
   reduce : ?, 
   initial : ?, 
   finalize : ?
} );

Extra

For more information on using MongoDB, visit the MongoCFML page

For functions that update data, you can pass in the writeconcern. The possible values are:

  • FSYNC_SAFE
    Exceptions are raised for network issues, and server errors; the write operation waits for the server to flush the data to disk
  • JOURNAL_SAFE
    Exceptions are raised for network issues, and server errors; the write operation waits for the server to group commit to the journal file on disk
  • MAJORITY
    Exceptions are raised for network issues, and server errors; waits on a majority of servers for the write operation
  • NONE
    No exceptions are raised, even for network issues
  • NORMAL
    Exceptions are raised for network issues, but not server errors
  • REPLICAS_SAFE
    Exceptions are raised for network issues, and server errors; waits for at least 2 servers for the write operation
  • SAFE
    Exceptions are raised for network issues, and server errors; waits on a server for the write operation