aws_sdk_dynamodb/operation/update_item/
builders.rs

1// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
2pub use crate::operation::update_item::_update_item_output::UpdateItemOutputBuilder;
3
4pub use crate::operation::update_item::_update_item_input::UpdateItemInputBuilder;
5
6impl crate::operation::update_item::builders::UpdateItemInputBuilder {
7    /// Sends a request with this input using the given client.
8    pub async fn send_with(
9        self,
10        client: &crate::Client,
11    ) -> ::std::result::Result<
12        crate::operation::update_item::UpdateItemOutput,
13        ::aws_smithy_runtime_api::client::result::SdkError<
14            crate::operation::update_item::UpdateItemError,
15            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
16        >,
17    > {
18        let mut fluent_builder = client.update_item();
19        fluent_builder.inner = self;
20        fluent_builder.send().await
21    }
22}
23/// Fluent builder constructing a request to `UpdateItem`.
24///
25/// <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>
26/// <p>You can also return the item's attribute values in the same <code>UpdateItem</code> operation using the <code>ReturnValues</code> parameter.</p>
27#[derive(::std::clone::Clone, ::std::fmt::Debug)]
28pub struct UpdateItemFluentBuilder {
29    handle: ::std::sync::Arc<crate::client::Handle>,
30    inner: crate::operation::update_item::builders::UpdateItemInputBuilder,
31    config_override: ::std::option::Option<crate::config::Builder>,
32}
33impl
34    crate::client::customize::internal::CustomizableSend<
35        crate::operation::update_item::UpdateItemOutput,
36        crate::operation::update_item::UpdateItemError,
37    > for UpdateItemFluentBuilder
38{
39    fn send(
40        self,
41        config_override: crate::config::Builder,
42    ) -> crate::client::customize::internal::BoxFuture<
43        crate::client::customize::internal::SendResult<
44            crate::operation::update_item::UpdateItemOutput,
45            crate::operation::update_item::UpdateItemError,
46        >,
47    > {
48        ::std::boxed::Box::pin(async move { self.config_override(config_override).send().await })
49    }
50}
51impl UpdateItemFluentBuilder {
52    /// Creates a new `UpdateItemFluentBuilder`.
53    pub(crate) fn new(handle: ::std::sync::Arc<crate::client::Handle>) -> Self {
54        Self {
55            handle,
56            inner: ::std::default::Default::default(),
57            config_override: ::std::option::Option::None,
58        }
59    }
60    /// Access the UpdateItem as a reference.
61    pub fn as_input(&self) -> &crate::operation::update_item::builders::UpdateItemInputBuilder {
62        &self.inner
63    }
64    /// Sends the request and returns the response.
65    ///
66    /// If an error occurs, an `SdkError` will be returned with additional details that
67    /// can be matched against.
68    ///
69    /// By default, any retryable failures will be retried twice. Retry behavior
70    /// is configurable with the [RetryConfig](aws_smithy_types::retry::RetryConfig), which can be
71    /// set when configuring the client.
72    pub async fn send(
73        self,
74    ) -> ::std::result::Result<
75        crate::operation::update_item::UpdateItemOutput,
76        ::aws_smithy_runtime_api::client::result::SdkError<
77            crate::operation::update_item::UpdateItemError,
78            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
79        >,
80    > {
81        let input = self
82            .inner
83            .build()
84            .map_err(::aws_smithy_runtime_api::client::result::SdkError::construction_failure)?;
85        let runtime_plugins = crate::operation::update_item::UpdateItem::operation_runtime_plugins(
86            self.handle.runtime_plugins.clone(),
87            &self.handle.conf,
88            self.config_override,
89        );
90        crate::operation::update_item::UpdateItem::orchestrate(&runtime_plugins, input).await
91    }
92
93    /// Consumes this builder, creating a customizable operation that can be modified before being sent.
94    pub fn customize(
95        self,
96    ) -> crate::client::customize::CustomizableOperation<
97        crate::operation::update_item::UpdateItemOutput,
98        crate::operation::update_item::UpdateItemError,
99        Self,
100    > {
101        crate::client::customize::CustomizableOperation::new(self)
102    }
103    pub(crate) fn config_override(mut self, config_override: impl ::std::convert::Into<crate::config::Builder>) -> Self {
104        self.set_config_override(::std::option::Option::Some(config_override.into()));
105        self
106    }
107
108    pub(crate) fn set_config_override(&mut self, config_override: ::std::option::Option<crate::config::Builder>) -> &mut Self {
109        self.config_override = config_override;
110        self
111    }
112    /// <p>The name of the table containing the item to update. You can also provide the Amazon Resource Name (ARN) of the table in this parameter.</p>
113    pub fn table_name(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
114        self.inner = self.inner.table_name(input.into());
115        self
116    }
117    /// <p>The name of the table containing the item to update. You can also provide the Amazon Resource Name (ARN) of the table in this parameter.</p>
118    pub fn set_table_name(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
119        self.inner = self.inner.set_table_name(input);
120        self
121    }
122    /// <p>The name of the table containing the item to update. You can also provide the Amazon Resource Name (ARN) of the table in this parameter.</p>
123    pub fn get_table_name(&self) -> &::std::option::Option<::std::string::String> {
124        self.inner.get_table_name()
125    }
126    ///
127    /// Adds a key-value pair to `Key`.
128    ///
129    /// To override the contents of this collection use [`set_key`](Self::set_key).
130    ///
131    /// <p>The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.</p>
132    /// <p>For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.</p>
133    pub fn key(mut self, k: impl ::std::convert::Into<::std::string::String>, v: crate::types::AttributeValue) -> Self {
134        self.inner = self.inner.key(k.into(), v);
135        self
136    }
137    /// <p>The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.</p>
138    /// <p>For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.</p>
139    pub fn set_key(mut self, input: ::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::AttributeValue>>) -> Self {
140        self.inner = self.inner.set_key(input);
141        self
142    }
143    /// <p>The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.</p>
144    /// <p>For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.</p>
145    pub fn get_key(&self) -> &::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::AttributeValue>> {
146        self.inner.get_key()
147    }
148    ///
149    /// Adds a key-value pair to `AttributeUpdates`.
150    ///
151    /// To override the contents of this collection use [`set_attribute_updates`](Self::set_attribute_updates).
152    ///
153    /// <p>This is a legacy parameter. Use <code>UpdateExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributeUpdates.html">AttributeUpdates</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
154    pub fn attribute_updates(mut self, k: impl ::std::convert::Into<::std::string::String>, v: crate::types::AttributeValueUpdate) -> Self {
155        self.inner = self.inner.attribute_updates(k.into(), v);
156        self
157    }
158    /// <p>This is a legacy parameter. Use <code>UpdateExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributeUpdates.html">AttributeUpdates</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
159    pub fn set_attribute_updates(
160        mut self,
161        input: ::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::AttributeValueUpdate>>,
162    ) -> Self {
163        self.inner = self.inner.set_attribute_updates(input);
164        self
165    }
166    /// <p>This is a legacy parameter. Use <code>UpdateExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributeUpdates.html">AttributeUpdates</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
167    pub fn get_attribute_updates(
168        &self,
169    ) -> &::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::AttributeValueUpdate>> {
170        self.inner.get_attribute_updates()
171    }
172    ///
173    /// Adds a key-value pair to `Expected`.
174    ///
175    /// To override the contents of this collection use [`set_expected`](Self::set_expected).
176    ///
177    /// <p>This is a legacy parameter. Use <code>ConditionExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.Expected.html">Expected</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
178    pub fn expected(mut self, k: impl ::std::convert::Into<::std::string::String>, v: crate::types::ExpectedAttributeValue) -> Self {
179        self.inner = self.inner.expected(k.into(), v);
180        self
181    }
182    /// <p>This is a legacy parameter. Use <code>ConditionExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.Expected.html">Expected</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
183    pub fn set_expected(
184        mut self,
185        input: ::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::ExpectedAttributeValue>>,
186    ) -> Self {
187        self.inner = self.inner.set_expected(input);
188        self
189    }
190    /// <p>This is a legacy parameter. Use <code>ConditionExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.Expected.html">Expected</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
191    pub fn get_expected(&self) -> &::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::ExpectedAttributeValue>> {
192        self.inner.get_expected()
193    }
194    /// <p>This is a legacy parameter. Use <code>ConditionExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.ConditionalOperator.html">ConditionalOperator</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
195    pub fn conditional_operator(mut self, input: crate::types::ConditionalOperator) -> Self {
196        self.inner = self.inner.conditional_operator(input);
197        self
198    }
199    /// <p>This is a legacy parameter. Use <code>ConditionExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.ConditionalOperator.html">ConditionalOperator</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
200    pub fn set_conditional_operator(mut self, input: ::std::option::Option<crate::types::ConditionalOperator>) -> Self {
201        self.inner = self.inner.set_conditional_operator(input);
202        self
203    }
204    /// <p>This is a legacy parameter. Use <code>ConditionExpression</code> instead. For more information, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.ConditionalOperator.html">ConditionalOperator</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
205    pub fn get_conditional_operator(&self) -> &::std::option::Option<crate::types::ConditionalOperator> {
206        self.inner.get_conditional_operator()
207    }
208    /// <p>Use <code>ReturnValues</code> if you want to get the item attributes as they appear before or after they are successfully updated. For <code>UpdateItem</code>, the valid values are:</p>
209    /// <ul>
210    /// <li>
211    /// <p><code>NONE</code> - If <code>ReturnValues</code> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <code>ReturnValues</code>.)</p></li>
212    /// <li>
213    /// <p><code>ALL_OLD</code> - Returns all of the attributes of the item, as they appeared before the UpdateItem operation.</p></li>
214    /// <li>
215    /// <p><code>UPDATED_OLD</code> - Returns only the updated attributes, as they appeared before the UpdateItem operation.</p></li>
216    /// <li>
217    /// <p><code>ALL_NEW</code> - Returns all of the attributes of the item, as they appear after the UpdateItem operation.</p></li>
218    /// <li>
219    /// <p><code>UPDATED_NEW</code> - Returns only the updated attributes, as they appear after the UpdateItem operation.</p></li>
220    /// </ul>
221    /// <p>There is no additional cost associated with requesting a return value aside from the small network and processing overhead of receiving a larger response. No read capacity units are consumed.</p>
222    /// <p>The values returned are strongly consistent.</p>
223    pub fn return_values(mut self, input: crate::types::ReturnValue) -> Self {
224        self.inner = self.inner.return_values(input);
225        self
226    }
227    /// <p>Use <code>ReturnValues</code> if you want to get the item attributes as they appear before or after they are successfully updated. For <code>UpdateItem</code>, the valid values are:</p>
228    /// <ul>
229    /// <li>
230    /// <p><code>NONE</code> - If <code>ReturnValues</code> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <code>ReturnValues</code>.)</p></li>
231    /// <li>
232    /// <p><code>ALL_OLD</code> - Returns all of the attributes of the item, as they appeared before the UpdateItem operation.</p></li>
233    /// <li>
234    /// <p><code>UPDATED_OLD</code> - Returns only the updated attributes, as they appeared before the UpdateItem operation.</p></li>
235    /// <li>
236    /// <p><code>ALL_NEW</code> - Returns all of the attributes of the item, as they appear after the UpdateItem operation.</p></li>
237    /// <li>
238    /// <p><code>UPDATED_NEW</code> - Returns only the updated attributes, as they appear after the UpdateItem operation.</p></li>
239    /// </ul>
240    /// <p>There is no additional cost associated with requesting a return value aside from the small network and processing overhead of receiving a larger response. No read capacity units are consumed.</p>
241    /// <p>The values returned are strongly consistent.</p>
242    pub fn set_return_values(mut self, input: ::std::option::Option<crate::types::ReturnValue>) -> Self {
243        self.inner = self.inner.set_return_values(input);
244        self
245    }
246    /// <p>Use <code>ReturnValues</code> if you want to get the item attributes as they appear before or after they are successfully updated. For <code>UpdateItem</code>, the valid values are:</p>
247    /// <ul>
248    /// <li>
249    /// <p><code>NONE</code> - If <code>ReturnValues</code> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <code>ReturnValues</code>.)</p></li>
250    /// <li>
251    /// <p><code>ALL_OLD</code> - Returns all of the attributes of the item, as they appeared before the UpdateItem operation.</p></li>
252    /// <li>
253    /// <p><code>UPDATED_OLD</code> - Returns only the updated attributes, as they appeared before the UpdateItem operation.</p></li>
254    /// <li>
255    /// <p><code>ALL_NEW</code> - Returns all of the attributes of the item, as they appear after the UpdateItem operation.</p></li>
256    /// <li>
257    /// <p><code>UPDATED_NEW</code> - Returns only the updated attributes, as they appear after the UpdateItem operation.</p></li>
258    /// </ul>
259    /// <p>There is no additional cost associated with requesting a return value aside from the small network and processing overhead of receiving a larger response. No read capacity units are consumed.</p>
260    /// <p>The values returned are strongly consistent.</p>
261    pub fn get_return_values(&self) -> &::std::option::Option<crate::types::ReturnValue> {
262        self.inner.get_return_values()
263    }
264    /// <p>Determines the level of detail about either provisioned or on-demand throughput consumption that is returned in the response:</p>
265    /// <ul>
266    /// <li>
267    /// <p><code>INDEXES</code> - The response includes the aggregate <code>ConsumedCapacity</code> for the operation, together with <code>ConsumedCapacity</code> for each table and secondary index that was accessed.</p>
268    /// <p>Note that some operations, such as <code>GetItem</code> and <code>BatchGetItem</code>, do not access any indexes at all. In these cases, specifying <code>INDEXES</code> will only return <code>ConsumedCapacity</code> information for table(s).</p></li>
269    /// <li>
270    /// <p><code>TOTAL</code> - The response includes only the aggregate <code>ConsumedCapacity</code> for the operation.</p></li>
271    /// <li>
272    /// <p><code>NONE</code> - No <code>ConsumedCapacity</code> details are included in the response.</p></li>
273    /// </ul>
274    pub fn return_consumed_capacity(mut self, input: crate::types::ReturnConsumedCapacity) -> Self {
275        self.inner = self.inner.return_consumed_capacity(input);
276        self
277    }
278    /// <p>Determines the level of detail about either provisioned or on-demand throughput consumption that is returned in the response:</p>
279    /// <ul>
280    /// <li>
281    /// <p><code>INDEXES</code> - The response includes the aggregate <code>ConsumedCapacity</code> for the operation, together with <code>ConsumedCapacity</code> for each table and secondary index that was accessed.</p>
282    /// <p>Note that some operations, such as <code>GetItem</code> and <code>BatchGetItem</code>, do not access any indexes at all. In these cases, specifying <code>INDEXES</code> will only return <code>ConsumedCapacity</code> information for table(s).</p></li>
283    /// <li>
284    /// <p><code>TOTAL</code> - The response includes only the aggregate <code>ConsumedCapacity</code> for the operation.</p></li>
285    /// <li>
286    /// <p><code>NONE</code> - No <code>ConsumedCapacity</code> details are included in the response.</p></li>
287    /// </ul>
288    pub fn set_return_consumed_capacity(mut self, input: ::std::option::Option<crate::types::ReturnConsumedCapacity>) -> Self {
289        self.inner = self.inner.set_return_consumed_capacity(input);
290        self
291    }
292    /// <p>Determines the level of detail about either provisioned or on-demand throughput consumption that is returned in the response:</p>
293    /// <ul>
294    /// <li>
295    /// <p><code>INDEXES</code> - The response includes the aggregate <code>ConsumedCapacity</code> for the operation, together with <code>ConsumedCapacity</code> for each table and secondary index that was accessed.</p>
296    /// <p>Note that some operations, such as <code>GetItem</code> and <code>BatchGetItem</code>, do not access any indexes at all. In these cases, specifying <code>INDEXES</code> will only return <code>ConsumedCapacity</code> information for table(s).</p></li>
297    /// <li>
298    /// <p><code>TOTAL</code> - The response includes only the aggregate <code>ConsumedCapacity</code> for the operation.</p></li>
299    /// <li>
300    /// <p><code>NONE</code> - No <code>ConsumedCapacity</code> details are included in the response.</p></li>
301    /// </ul>
302    pub fn get_return_consumed_capacity(&self) -> &::std::option::Option<crate::types::ReturnConsumedCapacity> {
303        self.inner.get_return_consumed_capacity()
304    }
305    /// <p>Determines whether item collection metrics are returned. If set to <code>SIZE</code>, the response includes statistics about item collections, if any, that were modified during the operation are returned in the response. If set to <code>NONE</code> (the default), no statistics are returned.</p>
306    pub fn return_item_collection_metrics(mut self, input: crate::types::ReturnItemCollectionMetrics) -> Self {
307        self.inner = self.inner.return_item_collection_metrics(input);
308        self
309    }
310    /// <p>Determines whether item collection metrics are returned. If set to <code>SIZE</code>, the response includes statistics about item collections, if any, that were modified during the operation are returned in the response. If set to <code>NONE</code> (the default), no statistics are returned.</p>
311    pub fn set_return_item_collection_metrics(mut self, input: ::std::option::Option<crate::types::ReturnItemCollectionMetrics>) -> Self {
312        self.inner = self.inner.set_return_item_collection_metrics(input);
313        self
314    }
315    /// <p>Determines whether item collection metrics are returned. If set to <code>SIZE</code>, the response includes statistics about item collections, if any, that were modified during the operation are returned in the response. If set to <code>NONE</code> (the default), no statistics are returned.</p>
316    pub fn get_return_item_collection_metrics(&self) -> &::std::option::Option<crate::types::ReturnItemCollectionMetrics> {
317        self.inner.get_return_item_collection_metrics()
318    }
319    /// <p>An expression that defines one or more attributes to be updated, the action to be performed on them, and new values for them.</p>
320    /// <p>The following action values are available for <code>UpdateExpression</code>.</p>
321    /// <ul>
322    /// <li>
323    /// <p><code>SET</code> - Adds one or more attributes and values to an item. If any of these attributes already exist, they are replaced by the new values. You can also use <code>SET</code> to add or subtract from an attribute that is of type Number. For example: <code>SET myNum = myNum + :val</code></p>
324    /// <p><code>SET</code> supports the following functions:</p>
325    /// <ul>
326    /// <li>
327    /// <p><code>if_not_exists (path, operand)</code> - if the item does not contain an attribute at the specified path, then <code>if_not_exists</code> evaluates to operand; otherwise, it evaluates to path. You can use this function to avoid overwriting an attribute that may already be present in the item.</p></li>
328    /// <li>
329    /// <p><code>list_append (operand, operand)</code> - evaluates to a list with a new element added to it. You can append the new element to the start or the end of the list by reversing the order of the operands.</p></li>
330    /// </ul>
331    /// <p>These function names are case-sensitive.</p></li>
332    /// <li>
333    /// <p><code>REMOVE</code> - Removes one or more attributes from an item.</p></li>
334    /// <li>
335    /// <p><code>ADD</code> - Adds the specified value to the item, if the attribute does not already exist. If the attribute does exist, then the behavior of <code>ADD</code> depends on the data type of the attribute:</p>
336    /// <ul>
337    /// <li>
338    /// <p>If the existing attribute is a number, and if <code>Value</code> is also a number, then <code>Value</code> is mathematically added to the existing attribute. If <code>Value</code> is a negative number, then it is subtracted from the existing attribute.</p><note>
339    /// <p>If you use <code>ADD</code> to increment or decrement a number value for an item that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value.</p>
340    /// <p>Similarly, if you use <code>ADD</code> for an existing item to increment or decrement an attribute value that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value. For example, suppose that the item you want to update doesn't have an attribute named <code>itemcount</code>, but you decide to <code>ADD</code> the number <code>3</code> to this attribute anyway. DynamoDB will create the <code>itemcount</code> attribute, set its initial value to <code>0</code>, and finally add <code>3</code> to it. The result will be a new <code>itemcount</code> attribute in the item, with a value of <code>3</code>.</p>
341    /// </note></li>
342    /// <li>
343    /// <p>If the existing data type is a set and if <code>Value</code> is also a set, then <code>Value</code> is added to the existing set. For example, if the attribute value is the set <code>\[1,2\]</code>, and the <code>ADD</code> action specified <code>\[3\]</code>, then the final attribute value is <code>\[1,2,3\]</code>. An error occurs if an <code>ADD</code> action is specified for a set attribute and the attribute type specified does not match the existing set type.</p>
344    /// <p>Both sets must have the same primitive data type. For example, if the existing data type is a set of strings, the <code>Value</code> must also be a set of strings.</p></li>
345    /// </ul><important>
346    /// <p>The <code>ADD</code> action only supports Number and set data types. In addition, <code>ADD</code> can only be used on top-level attributes, not nested attributes.</p>
347    /// </important></li>
348    /// <li>
349    /// <p><code>DELETE</code> - Deletes an element from a set.</p>
350    /// <p>If a set of values is specified, then those values are subtracted from the old set. For example, if the attribute value was the set <code>\[a,b,c\]</code> and the <code>DELETE</code> action specifies <code>\[a,c\]</code>, then the final attribute value is <code>\[b\]</code>. Specifying an empty set is an error.</p><important>
351    /// <p>The <code>DELETE</code> action only supports set data types. In addition, <code>DELETE</code> can only be used on top-level attributes, not nested attributes.</p>
352    /// </important></li>
353    /// </ul>
354    /// <p>You can have many actions in a single expression, such as the following: <code>SET a=:value1, b=:value2 DELETE :value3, :value4, :value5</code></p>
355    /// <p>For more information on update expressions, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.Modifying.html">Modifying Items and Attributes</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
356    pub fn update_expression(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
357        self.inner = self.inner.update_expression(input.into());
358        self
359    }
360    /// <p>An expression that defines one or more attributes to be updated, the action to be performed on them, and new values for them.</p>
361    /// <p>The following action values are available for <code>UpdateExpression</code>.</p>
362    /// <ul>
363    /// <li>
364    /// <p><code>SET</code> - Adds one or more attributes and values to an item. If any of these attributes already exist, they are replaced by the new values. You can also use <code>SET</code> to add or subtract from an attribute that is of type Number. For example: <code>SET myNum = myNum + :val</code></p>
365    /// <p><code>SET</code> supports the following functions:</p>
366    /// <ul>
367    /// <li>
368    /// <p><code>if_not_exists (path, operand)</code> - if the item does not contain an attribute at the specified path, then <code>if_not_exists</code> evaluates to operand; otherwise, it evaluates to path. You can use this function to avoid overwriting an attribute that may already be present in the item.</p></li>
369    /// <li>
370    /// <p><code>list_append (operand, operand)</code> - evaluates to a list with a new element added to it. You can append the new element to the start or the end of the list by reversing the order of the operands.</p></li>
371    /// </ul>
372    /// <p>These function names are case-sensitive.</p></li>
373    /// <li>
374    /// <p><code>REMOVE</code> - Removes one or more attributes from an item.</p></li>
375    /// <li>
376    /// <p><code>ADD</code> - Adds the specified value to the item, if the attribute does not already exist. If the attribute does exist, then the behavior of <code>ADD</code> depends on the data type of the attribute:</p>
377    /// <ul>
378    /// <li>
379    /// <p>If the existing attribute is a number, and if <code>Value</code> is also a number, then <code>Value</code> is mathematically added to the existing attribute. If <code>Value</code> is a negative number, then it is subtracted from the existing attribute.</p><note>
380    /// <p>If you use <code>ADD</code> to increment or decrement a number value for an item that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value.</p>
381    /// <p>Similarly, if you use <code>ADD</code> for an existing item to increment or decrement an attribute value that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value. For example, suppose that the item you want to update doesn't have an attribute named <code>itemcount</code>, but you decide to <code>ADD</code> the number <code>3</code> to this attribute anyway. DynamoDB will create the <code>itemcount</code> attribute, set its initial value to <code>0</code>, and finally add <code>3</code> to it. The result will be a new <code>itemcount</code> attribute in the item, with a value of <code>3</code>.</p>
382    /// </note></li>
383    /// <li>
384    /// <p>If the existing data type is a set and if <code>Value</code> is also a set, then <code>Value</code> is added to the existing set. For example, if the attribute value is the set <code>\[1,2\]</code>, and the <code>ADD</code> action specified <code>\[3\]</code>, then the final attribute value is <code>\[1,2,3\]</code>. An error occurs if an <code>ADD</code> action is specified for a set attribute and the attribute type specified does not match the existing set type.</p>
385    /// <p>Both sets must have the same primitive data type. For example, if the existing data type is a set of strings, the <code>Value</code> must also be a set of strings.</p></li>
386    /// </ul><important>
387    /// <p>The <code>ADD</code> action only supports Number and set data types. In addition, <code>ADD</code> can only be used on top-level attributes, not nested attributes.</p>
388    /// </important></li>
389    /// <li>
390    /// <p><code>DELETE</code> - Deletes an element from a set.</p>
391    /// <p>If a set of values is specified, then those values are subtracted from the old set. For example, if the attribute value was the set <code>\[a,b,c\]</code> and the <code>DELETE</code> action specifies <code>\[a,c\]</code>, then the final attribute value is <code>\[b\]</code>. Specifying an empty set is an error.</p><important>
392    /// <p>The <code>DELETE</code> action only supports set data types. In addition, <code>DELETE</code> can only be used on top-level attributes, not nested attributes.</p>
393    /// </important></li>
394    /// </ul>
395    /// <p>You can have many actions in a single expression, such as the following: <code>SET a=:value1, b=:value2 DELETE :value3, :value4, :value5</code></p>
396    /// <p>For more information on update expressions, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.Modifying.html">Modifying Items and Attributes</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
397    pub fn set_update_expression(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
398        self.inner = self.inner.set_update_expression(input);
399        self
400    }
401    /// <p>An expression that defines one or more attributes to be updated, the action to be performed on them, and new values for them.</p>
402    /// <p>The following action values are available for <code>UpdateExpression</code>.</p>
403    /// <ul>
404    /// <li>
405    /// <p><code>SET</code> - Adds one or more attributes and values to an item. If any of these attributes already exist, they are replaced by the new values. You can also use <code>SET</code> to add or subtract from an attribute that is of type Number. For example: <code>SET myNum = myNum + :val</code></p>
406    /// <p><code>SET</code> supports the following functions:</p>
407    /// <ul>
408    /// <li>
409    /// <p><code>if_not_exists (path, operand)</code> - if the item does not contain an attribute at the specified path, then <code>if_not_exists</code> evaluates to operand; otherwise, it evaluates to path. You can use this function to avoid overwriting an attribute that may already be present in the item.</p></li>
410    /// <li>
411    /// <p><code>list_append (operand, operand)</code> - evaluates to a list with a new element added to it. You can append the new element to the start or the end of the list by reversing the order of the operands.</p></li>
412    /// </ul>
413    /// <p>These function names are case-sensitive.</p></li>
414    /// <li>
415    /// <p><code>REMOVE</code> - Removes one or more attributes from an item.</p></li>
416    /// <li>
417    /// <p><code>ADD</code> - Adds the specified value to the item, if the attribute does not already exist. If the attribute does exist, then the behavior of <code>ADD</code> depends on the data type of the attribute:</p>
418    /// <ul>
419    /// <li>
420    /// <p>If the existing attribute is a number, and if <code>Value</code> is also a number, then <code>Value</code> is mathematically added to the existing attribute. If <code>Value</code> is a negative number, then it is subtracted from the existing attribute.</p><note>
421    /// <p>If you use <code>ADD</code> to increment or decrement a number value for an item that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value.</p>
422    /// <p>Similarly, if you use <code>ADD</code> for an existing item to increment or decrement an attribute value that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value. For example, suppose that the item you want to update doesn't have an attribute named <code>itemcount</code>, but you decide to <code>ADD</code> the number <code>3</code> to this attribute anyway. DynamoDB will create the <code>itemcount</code> attribute, set its initial value to <code>0</code>, and finally add <code>3</code> to it. The result will be a new <code>itemcount</code> attribute in the item, with a value of <code>3</code>.</p>
423    /// </note></li>
424    /// <li>
425    /// <p>If the existing data type is a set and if <code>Value</code> is also a set, then <code>Value</code> is added to the existing set. For example, if the attribute value is the set <code>\[1,2\]</code>, and the <code>ADD</code> action specified <code>\[3\]</code>, then the final attribute value is <code>\[1,2,3\]</code>. An error occurs if an <code>ADD</code> action is specified for a set attribute and the attribute type specified does not match the existing set type.</p>
426    /// <p>Both sets must have the same primitive data type. For example, if the existing data type is a set of strings, the <code>Value</code> must also be a set of strings.</p></li>
427    /// </ul><important>
428    /// <p>The <code>ADD</code> action only supports Number and set data types. In addition, <code>ADD</code> can only be used on top-level attributes, not nested attributes.</p>
429    /// </important></li>
430    /// <li>
431    /// <p><code>DELETE</code> - Deletes an element from a set.</p>
432    /// <p>If a set of values is specified, then those values are subtracted from the old set. For example, if the attribute value was the set <code>\[a,b,c\]</code> and the <code>DELETE</code> action specifies <code>\[a,c\]</code>, then the final attribute value is <code>\[b\]</code>. Specifying an empty set is an error.</p><important>
433    /// <p>The <code>DELETE</code> action only supports set data types. In addition, <code>DELETE</code> can only be used on top-level attributes, not nested attributes.</p>
434    /// </important></li>
435    /// </ul>
436    /// <p>You can have many actions in a single expression, such as the following: <code>SET a=:value1, b=:value2 DELETE :value3, :value4, :value5</code></p>
437    /// <p>For more information on update expressions, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.Modifying.html">Modifying Items and Attributes</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
438    pub fn get_update_expression(&self) -> &::std::option::Option<::std::string::String> {
439        self.inner.get_update_expression()
440    }
441    /// <p>A condition that must be satisfied in order for a conditional update to succeed.</p>
442    /// <p>An expression can contain any of the following:</p>
443    /// <ul>
444    /// <li>
445    /// <p>Functions: <code>attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size</code></p>
446    /// <p>These function names are case-sensitive.</p></li>
447    /// <li>
448    /// <p>Comparison operators: <code>= | &lt;&gt; | &lt; | &gt; | &lt;= | &gt;= | BETWEEN | IN </code></p></li>
449    /// <li>
450    /// <p>Logical operators: <code>AND | OR | NOT</code></p></li>
451    /// </ul>
452    /// <p>For more information about condition expressions, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html">Specifying Conditions</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
453    pub fn condition_expression(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
454        self.inner = self.inner.condition_expression(input.into());
455        self
456    }
457    /// <p>A condition that must be satisfied in order for a conditional update to succeed.</p>
458    /// <p>An expression can contain any of the following:</p>
459    /// <ul>
460    /// <li>
461    /// <p>Functions: <code>attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size</code></p>
462    /// <p>These function names are case-sensitive.</p></li>
463    /// <li>
464    /// <p>Comparison operators: <code>= | &lt;&gt; | &lt; | &gt; | &lt;= | &gt;= | BETWEEN | IN </code></p></li>
465    /// <li>
466    /// <p>Logical operators: <code>AND | OR | NOT</code></p></li>
467    /// </ul>
468    /// <p>For more information about condition expressions, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html">Specifying Conditions</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
469    pub fn set_condition_expression(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
470        self.inner = self.inner.set_condition_expression(input);
471        self
472    }
473    /// <p>A condition that must be satisfied in order for a conditional update to succeed.</p>
474    /// <p>An expression can contain any of the following:</p>
475    /// <ul>
476    /// <li>
477    /// <p>Functions: <code>attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size</code></p>
478    /// <p>These function names are case-sensitive.</p></li>
479    /// <li>
480    /// <p>Comparison operators: <code>= | &lt;&gt; | &lt; | &gt; | &lt;= | &gt;= | BETWEEN | IN </code></p></li>
481    /// <li>
482    /// <p>Logical operators: <code>AND | OR | NOT</code></p></li>
483    /// </ul>
484    /// <p>For more information about condition expressions, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html">Specifying Conditions</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
485    pub fn get_condition_expression(&self) -> &::std::option::Option<::std::string::String> {
486        self.inner.get_condition_expression()
487    }
488    ///
489    /// Adds a key-value pair to `ExpressionAttributeNames`.
490    ///
491    /// To override the contents of this collection use [`set_expression_attribute_names`](Self::set_expression_attribute_names).
492    ///
493    /// <p>One or more substitution tokens for attribute names in an expression. The following are some use cases for using <code>ExpressionAttributeNames</code>:</p>
494    /// <ul>
495    /// <li>
496    /// <p>To access an attribute whose name conflicts with a DynamoDB reserved word.</p></li>
497    /// <li>
498    /// <p>To create a placeholder for repeating occurrences of an attribute name in an expression.</p></li>
499    /// <li>
500    /// <p>To prevent special characters in an attribute name from being misinterpreted in an expression.</p></li>
501    /// </ul>
502    /// <p>Use the <b>#</b> character in an expression to dereference an attribute name. For example, consider the following attribute name:</p>
503    /// <ul>
504    /// <li>
505    /// <p><code>Percentile</code></p></li>
506    /// </ul>
507    /// <p>The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html">Reserved Words</a> in the <i>Amazon DynamoDB Developer Guide</i>.) To work around this, you could specify the following for <code>ExpressionAttributeNames</code>:</p>
508    /// <ul>
509    /// <li>
510    /// <p><code>{"#P":"Percentile"}</code></p></li>
511    /// </ul>
512    /// <p>You could then use this substitution in an expression, as in this example:</p>
513    /// <ul>
514    /// <li>
515    /// <p><code>#P = :val</code></p></li>
516    /// </ul><note>
517    /// <p>Tokens that begin with the <b>:</b> character are <i>expression attribute values</i>, which are placeholders for the actual value at runtime.</p>
518    /// </note>
519    /// <p>For more information about expression attribute names, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html">Specifying Item Attributes</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
520    pub fn expression_attribute_names(
521        mut self,
522        k: impl ::std::convert::Into<::std::string::String>,
523        v: impl ::std::convert::Into<::std::string::String>,
524    ) -> Self {
525        self.inner = self.inner.expression_attribute_names(k.into(), v.into());
526        self
527    }
528    /// <p>One or more substitution tokens for attribute names in an expression. The following are some use cases for using <code>ExpressionAttributeNames</code>:</p>
529    /// <ul>
530    /// <li>
531    /// <p>To access an attribute whose name conflicts with a DynamoDB reserved word.</p></li>
532    /// <li>
533    /// <p>To create a placeholder for repeating occurrences of an attribute name in an expression.</p></li>
534    /// <li>
535    /// <p>To prevent special characters in an attribute name from being misinterpreted in an expression.</p></li>
536    /// </ul>
537    /// <p>Use the <b>#</b> character in an expression to dereference an attribute name. For example, consider the following attribute name:</p>
538    /// <ul>
539    /// <li>
540    /// <p><code>Percentile</code></p></li>
541    /// </ul>
542    /// <p>The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html">Reserved Words</a> in the <i>Amazon DynamoDB Developer Guide</i>.) To work around this, you could specify the following for <code>ExpressionAttributeNames</code>:</p>
543    /// <ul>
544    /// <li>
545    /// <p><code>{"#P":"Percentile"}</code></p></li>
546    /// </ul>
547    /// <p>You could then use this substitution in an expression, as in this example:</p>
548    /// <ul>
549    /// <li>
550    /// <p><code>#P = :val</code></p></li>
551    /// </ul><note>
552    /// <p>Tokens that begin with the <b>:</b> character are <i>expression attribute values</i>, which are placeholders for the actual value at runtime.</p>
553    /// </note>
554    /// <p>For more information about expression attribute names, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html">Specifying Item Attributes</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
555    pub fn set_expression_attribute_names(
556        mut self,
557        input: ::std::option::Option<::std::collections::HashMap<::std::string::String, ::std::string::String>>,
558    ) -> Self {
559        self.inner = self.inner.set_expression_attribute_names(input);
560        self
561    }
562    /// <p>One or more substitution tokens for attribute names in an expression. The following are some use cases for using <code>ExpressionAttributeNames</code>:</p>
563    /// <ul>
564    /// <li>
565    /// <p>To access an attribute whose name conflicts with a DynamoDB reserved word.</p></li>
566    /// <li>
567    /// <p>To create a placeholder for repeating occurrences of an attribute name in an expression.</p></li>
568    /// <li>
569    /// <p>To prevent special characters in an attribute name from being misinterpreted in an expression.</p></li>
570    /// </ul>
571    /// <p>Use the <b>#</b> character in an expression to dereference an attribute name. For example, consider the following attribute name:</p>
572    /// <ul>
573    /// <li>
574    /// <p><code>Percentile</code></p></li>
575    /// </ul>
576    /// <p>The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html">Reserved Words</a> in the <i>Amazon DynamoDB Developer Guide</i>.) To work around this, you could specify the following for <code>ExpressionAttributeNames</code>:</p>
577    /// <ul>
578    /// <li>
579    /// <p><code>{"#P":"Percentile"}</code></p></li>
580    /// </ul>
581    /// <p>You could then use this substitution in an expression, as in this example:</p>
582    /// <ul>
583    /// <li>
584    /// <p><code>#P = :val</code></p></li>
585    /// </ul><note>
586    /// <p>Tokens that begin with the <b>:</b> character are <i>expression attribute values</i>, which are placeholders for the actual value at runtime.</p>
587    /// </note>
588    /// <p>For more information about expression attribute names, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html">Specifying Item Attributes</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
589    pub fn get_expression_attribute_names(
590        &self,
591    ) -> &::std::option::Option<::std::collections::HashMap<::std::string::String, ::std::string::String>> {
592        self.inner.get_expression_attribute_names()
593    }
594    ///
595    /// Adds a key-value pair to `ExpressionAttributeValues`.
596    ///
597    /// To override the contents of this collection use [`set_expression_attribute_values`](Self::set_expression_attribute_values).
598    ///
599    /// <p>One or more values that can be substituted in an expression.</p>
600    /// <p>Use the <b>:</b> (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the <code>ProductStatus</code> attribute was one of the following:</p>
601    /// <p><code>Available | Backordered | Discontinued</code></p>
602    /// <p>You would first need to specify <code>ExpressionAttributeValues</code> as follows:</p>
603    /// <p><code>{ ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }</code></p>
604    /// <p>You could then use these values in an expression, such as this:</p>
605    /// <p><code>ProductStatus IN (:avail, :back, :disc)</code></p>
606    /// <p>For more information on expression attribute values, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html">Condition Expressions</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
607    pub fn expression_attribute_values(mut self, k: impl ::std::convert::Into<::std::string::String>, v: crate::types::AttributeValue) -> Self {
608        self.inner = self.inner.expression_attribute_values(k.into(), v);
609        self
610    }
611    /// <p>One or more values that can be substituted in an expression.</p>
612    /// <p>Use the <b>:</b> (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the <code>ProductStatus</code> attribute was one of the following:</p>
613    /// <p><code>Available | Backordered | Discontinued</code></p>
614    /// <p>You would first need to specify <code>ExpressionAttributeValues</code> as follows:</p>
615    /// <p><code>{ ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }</code></p>
616    /// <p>You could then use these values in an expression, such as this:</p>
617    /// <p><code>ProductStatus IN (:avail, :back, :disc)</code></p>
618    /// <p>For more information on expression attribute values, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html">Condition Expressions</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
619    pub fn set_expression_attribute_values(
620        mut self,
621        input: ::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::AttributeValue>>,
622    ) -> Self {
623        self.inner = self.inner.set_expression_attribute_values(input);
624        self
625    }
626    /// <p>One or more values that can be substituted in an expression.</p>
627    /// <p>Use the <b>:</b> (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the <code>ProductStatus</code> attribute was one of the following:</p>
628    /// <p><code>Available | Backordered | Discontinued</code></p>
629    /// <p>You would first need to specify <code>ExpressionAttributeValues</code> as follows:</p>
630    /// <p><code>{ ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }</code></p>
631    /// <p>You could then use these values in an expression, such as this:</p>
632    /// <p><code>ProductStatus IN (:avail, :back, :disc)</code></p>
633    /// <p>For more information on expression attribute values, see <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html">Condition Expressions</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
634    pub fn get_expression_attribute_values(
635        &self,
636    ) -> &::std::option::Option<::std::collections::HashMap<::std::string::String, crate::types::AttributeValue>> {
637        self.inner.get_expression_attribute_values()
638    }
639    /// <p>An optional parameter that returns the item attributes for an <code>UpdateItem</code> operation that failed a condition check.</p>
640    /// <p>There is no additional cost associated with requesting a return value aside from the small network and processing overhead of receiving a larger response. No read capacity units are consumed.</p>
641    pub fn return_values_on_condition_check_failure(mut self, input: crate::types::ReturnValuesOnConditionCheckFailure) -> Self {
642        self.inner = self.inner.return_values_on_condition_check_failure(input);
643        self
644    }
645    /// <p>An optional parameter that returns the item attributes for an <code>UpdateItem</code> operation that failed a condition check.</p>
646    /// <p>There is no additional cost associated with requesting a return value aside from the small network and processing overhead of receiving a larger response. No read capacity units are consumed.</p>
647    pub fn set_return_values_on_condition_check_failure(
648        mut self,
649        input: ::std::option::Option<crate::types::ReturnValuesOnConditionCheckFailure>,
650    ) -> Self {
651        self.inner = self.inner.set_return_values_on_condition_check_failure(input);
652        self
653    }
654    /// <p>An optional parameter that returns the item attributes for an <code>UpdateItem</code> operation that failed a condition check.</p>
655    /// <p>There is no additional cost associated with requesting a return value aside from the small network and processing overhead of receiving a larger response. No read capacity units are consumed.</p>
656    pub fn get_return_values_on_condition_check_failure(&self) -> &::std::option::Option<crate::types::ReturnValuesOnConditionCheckFailure> {
657        self.inner.get_return_values_on_condition_check_failure()
658    }
659}