Add text protocol based query method (#14) #1079
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Add query_raw_txt client method It takes all the extended protocol params as text and passes them to postgres to sort out types. With that we can avoid situations when postgres derived different type compared to what was passed in arguments. There is also propare_typed method, but since we receive data in text format anyway it makes more sense to avoid dealing with types in params. This way we also can save on roundtrip and send Parse+Bind+Describe+Execute right away without waiting for params description before Bind. Use text protocol for responses -- that allows to grab postgres-provided serializations for types. Catch command tag. Expose row buffer size and add `max_backend_message_size` option to prevent handling and storing in memory large messages from the backend. Co-authored-by: Arthur Petukhovsky <[email protected]>
Previous coding only allowed passing vector of text values as params, but that does not allow to distinguish between nulls and 4-byte strings with "null" written in them. Change query_raw_txt params argument to accept Vec<Option<String>> instead.
As we are trying to match client-side behaviour with node-postgres we need to return this fields as well because node-postgres returns them.
Signed-off-by: Alex Chi <[email protected]>
* refactor query_raw_txt to use a pre-prepared statement * expose ready_status on RowStream
Enable transactional pool mode configuration
fix(pool): Skip all type info queries, we run in text mode
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