Collection operators
Based on the above list of columns, phantom supports CQL 3 modify operations for CQL 3 collections: list, set, map. All operators will be available in an update query, specifically:
db.table.update .where(_.id eqs someId) .modify(_.someList $OPERATOR $args) .future()Examples in ListOperatorsTest.scala.
| Name | Description |
|---|---|
prepend | Adds an item to the head of the list |
prependAll | Adds multiple items to the head of the list |
append | Adds an item to the tail of the list |
appendAll | Adds multiple items to the tail of the list |
discard | Removes the given item from the list. |
discardAll | Removes all given items from the list. |
setIdIx | Updates a specific index in the list |
Sets have a better performance than lists, as the Cassandra documentation suggests. Examples in SetOperationsTest.scala.
| Name | Description |
|---|---|
add | Adds an item to the tail of the set |
addAll | Adds multiple items to the tail of the set |
remove | Removes the given item from the set. |
removeAll | Removes all given items from the set. |
Both the key and value types of a Map must be Cassandra primitives. Examples in MapOperationsTest.scala:
| Name | Description |
|---|---|
put | Adds an (key -> value) pair to the map |
putAll | Adds multiple (key -> value) pairs to the map |
setTo | Updates the value of a key in map, with Database.table.update.where(_.id eqs id).modify(_.map(key) setTo value).future() |
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