The simple query API is a more robust version of `batch_execute`. Like
that method, `simple_query` allows passing a `&str` of semicolon
delimited queries. Divergence from `batch_execute` is in the return
type; instead of nothing, a `Vec<TextRows>` is returned. Each entry in
this `Vec` is the result set of one query in the query string. Thus if
there are two semicolon delimited queries, there will be two entries in
this `Vec`.
The `TextRows` and `TextRow` types returned from `simple_query` closely
mirror existing `Rows` and `Row` types with one major difference: only
string values can be retrieved from them.
There are a few TODOs in the code:
* Are text values in this case guaranteed to be utf-8 encoded?
* unwrap call in simple_query which assumes RowDescription is always
sent
* documentation (denoted with either STUB or TODO)
This allows for in-place deserialization of text and bytea values in
particular.
Row::get_bytes is removed since it previously existed for this use case.
Closes#281
Handle the error that is generated when the DB connection goes down instead of panicing with
an unreachable code error. This allows the notification client to retry establishing the
connection instead of crashing the complete program.
* Make Rows a fully owned type
This allows Rows to outlive a statement and be sent to 'static threads.
Resolves#263.
* fixup! Make Rows a fully owned type
* Remove unneeded Debug impl
* Oops, we do actually need this :(
