View Source MnesiaAssistant.Error (Mishka developer tools v0.1.7)
Summary
Functions
Erlang document:
All Mnesia transactions, including all the schema update functions, either return value {atomic, Val}
or the tuple {aborted, Reason}
. Reason can be either of the atoms in the following list.
The function error_description/1
returns a descriptive string that describes the error.
Functions
Erlang document:
All Mnesia transactions, including all the schema update functions, either return value {atomic, Val}
or the tuple {aborted, Reason}
. Reason can be either of the atoms in the following list.
The function error_description/1
returns a descriptive string that describes the error.
nested_transaction
. Nested transactions are not allowed in this context.badarg
. Bad or invalid argument, possibly bad type.no_transaction
. Operation not allowed outside transactions.combine_error
. Table options illegally combined.bad_index
. Index already exists, or was out of bounds.already_exists
. Schema option to be activated is already on.index_exists
. Some operations cannot be performed on tables with an index.no_exists
. Tried to perform operation on non-existing (not-alive) item.system_limit
. A system limit was exhausted.mnesia_down
. A transaction involves records on a remote node, which became unavailable before the transaction was completed. Records are no longer available elsewhere in the network.not_a_db_node
. A node was mentioned that does not exist in the schema.bad_type
. Bad type specified in argument.node_not_running
. Node is not running.truncated_binary_file
. Truncated binary in file.active
. Some delete operations require that all active records are removed.illegal
. Operation not supported on this record.
Error can be Reason, {error, Reason}
, or {aborted, Reason}
. Reason can be an atom or a
tuple with Reason as an atom in the first field.
The following examples illustrate a function that returns an error, and the method to retrieve more detailed error information:
- The function
mnesia:create_table(bar, [{attributes, 3.14}])
returns the tuple{aborted,Reason}
, where Reason is the tuple{bad_type,bar,3.14000}
.
The function mnesia:error_description(Reason)
returns the term {"Bad type on some provided arguments",bar,3.14000}
,
which is an error description suitable for display.
error_description(Error :: term())
Example:
MnesiaAssistant.Error.error_description(error)