Feature request: Add truncate/empty collection support

[chrislatimer]

Please add a truncate operation equivalent to the CQL truncate table operation.

[amorton]

this should work as a deleteMany command with an empty or undefined filter, i.e.

{"deleteMany" : {
    "filter": {}
}}

// same as 
{"deleteMany" : {}}

When the API gets a deleteMany with no filter it will issue a CQL Truncate. This command will delete all rows in the table and leave the table in place.

@Hazel-Datastax updated as discussed in meetings.

[maheshrajamani]

this should work as a deleteMany command with an empty or undefined filter

@amorton deleteMany command response returns number of document deleted. When we truncate table using cql truncate command we will not able able to provide this. Can we create a new command truncate() for this?

[amorton]

@maheshrajamani and @Hazel-Datastax lets turn -1 for "all" records