fn update_item(
        &self,
        input: UpdateItemInput,
    ) -> RusotoFuture<UpdateItemOutput, UpdateItemError> {
        let mut request = SignedRequest::new("POST", "dynamodb", &self.region, "/");

        request.set_content_type("application/x-amz-json-1.0".to_owned());
        request.add_header("x-amz-target", "DynamoDB_20120810.UpdateItem");
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded.into_bytes()));

        self.client.sign_and_dispatch(request, |response| {
            if response.status.is_success() {
                Box::new(response.buffer().from_err().map(|response| {
                    let mut body = response.body;

                    if body.is_empty() || body == b"null" {
                        body = b"{}".to_vec();
                    }

                    serde_json::from_str::<UpdateItemOutput>(
                        String::from_utf8_lossy(body.as_ref()).as_ref(),
                    )
                    .unwrap()
                }))
            } else {
                Box::new(
                    response
                        .buffer()
                        .from_err()
                        .and_then(|response| Err(UpdateItemError::from_response(response))),
                )
            }
        })
    }
/// <p>Edits an existing item's attributes, or adds a new item to the table if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update on an existing item (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values).</p> <p>You can also return the item's attribute values in the same <code>UpdateItem</code> operation using the <code>ReturnValues</code> parameter.</p>
Edits an existing item's attributes, or adds a new item to the table if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update on an existing item (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values). You can also return the item's attribute values in the same UpdateItem operation using the ReturnValues parameter.
Edits an existing item ' s attributes or adds a new item to the table if it does not already exist . You can put delete or add attribute values . You can also perform a conditional update on an existing item ( insert a new attribute name - value pair if it doesn ' t exist or replace an existing name - value pair if it has certain expected attribute values ) . You can also return the item ' s attribute values in the same UpdateItem operation using the ReturnValues parameter .
fn update_item(
        &self,
        input: UpdateItemInput,
    ) -> RusotoFuture<UpdateItemOutput, UpdateItemError> {
        let mut request = SignedRequest::new("POST", "dynamodb", &self.region, "/");
        request.set_content_type("application/x-amz-json-1.0".to_owned());
        request.add_header("x-amz-target", "DynamoDB_20120810.UpdateItem");
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded.into_bytes()));
        self.client.sign_and_dispatch(request, |response| {
            if response.status.is_success() {
                Box::new(response.buffer().from_err().map(|response| {
                    let mut body = response.body;
                    if body.is_empty() || body == b"null" {
                        body = b"{}".to_vec();
                    }
                    serde_json::from_str::<UpdateItemOutput>(
                        String::from_utf8_lossy(body.as_ref()).as_ref(),
                    )
                    .unwrap()
                }))
            } else {
                Box::new(
                    response
                        .buffer()
                        .from_err()
                        .and_then(|response| Err(UpdateItemError::from_response(response))),
                )
            }
        })
    }
fn update_item ( & self , input : UpdateItemInput , ) -> RusotoFuture < UpdateItemOutput , UpdateItemError > { let mut request = SignedRequest :: new ( " " , " " , & self . region , " " ) ; request . set_content_type ( " " . to_owned ( ) ) ; request . add_header ( " " , " " ) ; let encoded = serde_json :: to_string ( & input ) . unwrap ( ) ; request . set_payload ( Some ( encoded . into_bytes ( ) ) ) ; self . client . sign_and_dispatch ( request , | response | { if response . status . is_success ( ) { Box :: new ( response . buffer ( ) . from_err ( ) . map ( | response | { let mut body = response . body ; if body . is_empty ( ) || body == b" " { body = b" " . to_vec ( ) ; } serde_json :: from_str :: < UpdateItemOutput > ( String :: from_utf8_lossy ( body . as_ref ( ) ) . as_ref ( ) , ) . unwrap ( ) } ) ) } else { Box :: new ( response . buffer ( ) . from_err ( ) . and_then ( | response | Err ( UpdateItemError :: from_response ( response ) ) ) , ) } } ) }
<p>Edits an existing item's attributes, or adds a new item to the table if it does not already exist.
<p > Edits an existing item ' s attributes or adds a new item to the table if it does not already exist .
&self
input
UpdateItemInput
&self
input
UpdateItemInput