Row to serde_json::Value about cdrs-tokio HOT 12 OPEN

You can convert them into Vec/Map and then to Value.

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You can convert them into Vec/Map and then to Value.

Not really understanding, any code snippet?

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Here's an example how to convert a Cassandra list to a Vec: https://github.com/krojew/cdrs-tokio/blob/master/cdrs-tokio/tests/collection_types.rs#L76
You can do similar thing to a Map.

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Here's an example how to convert a Cassandra list to a Vec: https://github.com/krojew/cdrs-tokio/blob/master/cdrs-tokio/tests/collection_types.rs#L76

You can do similar thing to a Map.

But the problem is the row structure is unknown. I need to use ColSpec to get correct type

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Is there anything preventing you from calling as_r_rust() on the column data?

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Is there anything preventing you from calling as_r_rust() on the column data?

No, but when I declare the new variable like HashMap<String, String (assume I don't know it's String)>, I have to provide type. But assume I don't know the map structure

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ColTypeOptionValue contains the information about the underlying types for collections. You can use that to deserialize appropriate values and move them into serde_json::Value.

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ColTypeOptionValue contains the information about the underlying types for collections. You can use that to deserialize appropriate values and move them into serde_json::Value.

Yes, currently using this, but not sure how to deal with nested map and triple

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The same way you'd do it with other programming languages - recursion.

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@krojew , any idea ?

let v: ColTypeOptionValue = col.clone().col_type.value.expect("");
            let v = match v {
                ColTypeOptionValue::CMap(key, v) => {
                    println!("{:#?} {:#?}", key.id, v);

                    // how to use key.id and v.id here?
                    let map: HashMap<?, ?> = row
                        .r_by_name::<Map>(col.name.as_str())
                        .expect("")
                        .as_r_rust()
                        .expect("");
                }
                _ => todo!(),
            };

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You are asking a basic programming question now, which is out of scope of rust crates.

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