/**
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0.
 */

#pragma once
#include <aws/dynamodb/DynamoDB_EXPORTS.h>
#include <aws/dynamodb/DynamoDBRequest.h>
#include <aws/core/utils/memory/stl/AWSString.h>
#include <aws/core/utils/memory/stl/AWSMap.h>
#include <aws/core/utils/memory/stl/AWSVector.h>
#include <aws/dynamodb/model/ReturnConsumedCapacity.h>
#include <aws/dynamodb/model/AttributeValue.h>
#include <utility>

namespace Aws
{
namespace DynamoDB
{
namespace Model
{

  /**
   * <p>Represents the input of a <code>GetItem</code> operation.</p><p><h3>See
   * Also:</h3>   <a
   * href="http://docs.aws.amazon.com/goto/WebAPI/dynamodb-2012-08-10/GetItemInput">AWS
   * API Reference</a></p>
   */
  class GetItemRequest : public DynamoDBRequest
  {
  public:
    AWS_DYNAMODB_API GetItemRequest();

    // Service request name is the Operation name which will send this request out,
    // each operation should has unique request name, so that we can get operation's name from this request.
    // Note: this is not true for response, multiple operations may have the same response name,
    // so we can not get operation's name from response.
    inline virtual const char* GetServiceRequestName() const override { return "GetItem"; }

    AWS_DYNAMODB_API Aws::String SerializePayload() const override;

    AWS_DYNAMODB_API Aws::Http::HeaderValueCollection GetRequestSpecificHeaders() const override;


    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline const Aws::String& GetTableName() const{ return m_tableName; }

    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline bool TableNameHasBeenSet() const { return m_tableNameHasBeenSet; }

    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline void SetTableName(const Aws::String& value) { m_tableNameHasBeenSet = true; m_tableName = value; }

    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline void SetTableName(Aws::String&& value) { m_tableNameHasBeenSet = true; m_tableName = std::move(value); }

    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline void SetTableName(const char* value) { m_tableNameHasBeenSet = true; m_tableName.assign(value); }

    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline GetItemRequest& WithTableName(const Aws::String& value) { SetTableName(value); return *this;}

    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline GetItemRequest& WithTableName(Aws::String&& value) { SetTableName(std::move(value)); return *this;}

    /**
     * <p>The name of the table containing the requested item.</p>
     */
    inline GetItemRequest& WithTableName(const char* value) { SetTableName(value); return *this;}


    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline const Aws::Map<Aws::String, AttributeValue>& GetKey() const{ return m_key; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline bool KeyHasBeenSet() const { return m_keyHasBeenSet; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline void SetKey(const Aws::Map<Aws::String, AttributeValue>& value) { m_keyHasBeenSet = true; m_key = value; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline void SetKey(Aws::Map<Aws::String, AttributeValue>&& value) { m_keyHasBeenSet = true; m_key = std::move(value); }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& WithKey(const Aws::Map<Aws::String, AttributeValue>& value) { SetKey(value); return *this;}

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& WithKey(Aws::Map<Aws::String, AttributeValue>&& value) { SetKey(std::move(value)); return *this;}

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& AddKey(const Aws::String& key, const AttributeValue& value) { m_keyHasBeenSet = true; m_key.emplace(key, value); return *this; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& AddKey(Aws::String&& key, const AttributeValue& value) { m_keyHasBeenSet = true; m_key.emplace(std::move(key), value); return *this; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& AddKey(const Aws::String& key, AttributeValue&& value) { m_keyHasBeenSet = true; m_key.emplace(key, std::move(value)); return *this; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& AddKey(Aws::String&& key, AttributeValue&& value) { m_keyHasBeenSet = true; m_key.emplace(std::move(key), std::move(value)); return *this; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& AddKey(const char* key, AttributeValue&& value) { m_keyHasBeenSet = true; m_key.emplace(key, std::move(value)); return *this; }

    /**
     * <p>A map of attribute names to <code>AttributeValue</code> objects, representing
     * the primary key of the item to retrieve.</p> <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>
     */
    inline GetItemRequest& AddKey(const char* key, const AttributeValue& value) { m_keyHasBeenSet = true; m_key.emplace(key, value); return *this; }


    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline const Aws::Vector<Aws::String>& GetAttributesToGet() const{ return m_attributesToGet; }

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline bool AttributesToGetHasBeenSet() const { return m_attributesToGetHasBeenSet; }

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline void SetAttributesToGet(const Aws::Vector<Aws::String>& value) { m_attributesToGetHasBeenSet = true; m_attributesToGet = value; }

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline void SetAttributesToGet(Aws::Vector<Aws::String>&& value) { m_attributesToGetHasBeenSet = true; m_attributesToGet = std::move(value); }

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline GetItemRequest& WithAttributesToGet(const Aws::Vector<Aws::String>& value) { SetAttributesToGet(value); return *this;}

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline GetItemRequest& WithAttributesToGet(Aws::Vector<Aws::String>&& value) { SetAttributesToGet(std::move(value)); return *this;}

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline GetItemRequest& AddAttributesToGet(const Aws::String& value) { m_attributesToGetHasBeenSet = true; m_attributesToGet.push_back(value); return *this; }

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline GetItemRequest& AddAttributesToGet(Aws::String&& value) { m_attributesToGetHasBeenSet = true; m_attributesToGet.push_back(std::move(value)); return *this; }

    /**
     * <p>This is a legacy parameter. Use <code>ProjectionExpression</code> instead.
     * For more information, see <a
     * href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.AttributesToGet.html">AttributesToGet</a>
     * in the <i>Amazon DynamoDB Developer Guide</i>.</p>
     */
    inline GetItemRequest& AddAttributesToGet(const char* value) { m_attributesToGetHasBeenSet = true; m_attributesToGet.push_back(value); return *this; }


    /**
     * <p>Determines the read consistency model: If set to <code>true</code>, then the
     * operation uses strongly consistent reads; otherwise, the operation uses
     * eventually consistent reads.</p>
     */
    inline bool GetConsistentRead() const{ return m_consistentRead; }

    /**
     * <p>Determines the read consistency model: If set to <code>true</code>, then the
     * operation uses strongly consistent reads; otherwise, the operation uses
     * eventually consistent reads.</p>
     */
    inline bool ConsistentReadHasBeenSet() const { return m_consistentReadHasBeenSet; }

    /**
     * <p>Determines the read consistency model: If set to <code>true</code>, then the
     * operation uses strongly consistent reads; otherwise, the operation uses
     * eventually consistent reads.</p>
     */
    inline void SetConsistentRead(bool value) { m_consistentReadHasBeenSet = true; m_consistentRead = value; }

    /**
     * <p>Determines the read consistency model: If set to <code>true</code>, then the
     * operation uses strongly consistent reads; otherwise, the operation uses
     * eventually consistent reads.</p>
     */
    inline GetItemRequest& WithConsistentRead(bool value) { SetConsistentRead(value); return *this;}


    
    inline const ReturnConsumedCapacity& GetReturnConsumedCapacity() const{ return m_returnConsumedCapacity; }

    
    inline bool ReturnConsumedCapacityHasBeenSet() const { return m_returnConsumedCapacityHasBeenSet; }

    
    inline void SetReturnConsumedCapacity(const ReturnConsumedCapacity& value) { m_returnConsumedCapacityHasBeenSet = true; m_returnConsumedCapacity = value; }

    
    inline void SetReturnConsumedCapacity(ReturnConsumedCapacity&& value) { m_returnConsumedCapacityHasBeenSet = true; m_returnConsumedCapacity = std::move(value); }

    
    inline GetItemRequest& WithReturnConsumedCapacity(const ReturnConsumedCapacity& value) { SetReturnConsumedCapacity(value); return *this;}

    
    inline GetItemRequest& WithReturnConsumedCapacity(ReturnConsumedCapacity&& value) { SetReturnConsumedCapacity(std::move(value)); return *this;}


    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline const Aws::String& GetProjectionExpression() const{ return m_projectionExpression; }

    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline bool ProjectionExpressionHasBeenSet() const { return m_projectionExpressionHasBeenSet; }

    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline void SetProjectionExpression(const Aws::String& value) { m_projectionExpressionHasBeenSet = true; m_projectionExpression = value; }

    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline void SetProjectionExpression(Aws::String&& value) { m_projectionExpressionHasBeenSet = true; m_projectionExpression = std::move(value); }

    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline void SetProjectionExpression(const char* value) { m_projectionExpressionHasBeenSet = true; m_projectionExpression.assign(value); }

    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline GetItemRequest& WithProjectionExpression(const Aws::String& value) { SetProjectionExpression(value); return *this;}

    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline GetItemRequest& WithProjectionExpression(Aws::String&& value) { SetProjectionExpression(std::move(value)); return *this;}

    /**
     * <p>A string that identifies one or more attributes to retrieve from the table.
     * These attributes can include scalars, sets, or elements of a JSON document. The
     * attributes in the expression must be separated by commas.</p> <p>If no attribute
     * names are specified, then all attributes are returned. If any of the requested
     * attributes are not found, they do not appear in the result.</p> <p>For more
     * information, 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>
     */
    inline GetItemRequest& WithProjectionExpression(const char* value) { SetProjectionExpression(value); return *this;}


    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline const Aws::Map<Aws::String, Aws::String>& GetExpressionAttributeNames() const{ return m_expressionAttributeNames; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline bool ExpressionAttributeNamesHasBeenSet() const { return m_expressionAttributeNamesHasBeenSet; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline void SetExpressionAttributeNames(const Aws::Map<Aws::String, Aws::String>& value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames = value; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline void SetExpressionAttributeNames(Aws::Map<Aws::String, Aws::String>&& value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames = std::move(value); }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& WithExpressionAttributeNames(const Aws::Map<Aws::String, Aws::String>& value) { SetExpressionAttributeNames(value); return *this;}

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& WithExpressionAttributeNames(Aws::Map<Aws::String, Aws::String>&& value) { SetExpressionAttributeNames(std::move(value)); return *this;}

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& AddExpressionAttributeNames(const Aws::String& key, const Aws::String& value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames.emplace(key, value); return *this; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& AddExpressionAttributeNames(Aws::String&& key, const Aws::String& value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames.emplace(std::move(key), value); return *this; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& AddExpressionAttributeNames(const Aws::String& key, Aws::String&& value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames.emplace(key, std::move(value)); return *this; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& AddExpressionAttributeNames(Aws::String&& key, Aws::String&& value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames.emplace(std::move(key), std::move(value)); return *this; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& AddExpressionAttributeNames(const char* key, Aws::String&& value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames.emplace(key, std::move(value)); return *this; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& AddExpressionAttributeNames(Aws::String&& key, const char* value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames.emplace(std::move(key), value); return *this; }

    /**
     * <p>One or more substitution tokens for attribute names in an expression. The
     * following are some use cases for using
     * <code>ExpressionAttributeNames</code>:</p> <ul> <li> <p>To access an attribute
     * whose name conflicts with a DynamoDB reserved word.</p> </li> <li> <p>To create
     * a placeholder for repeating occurrences of an attribute name in an
     * expression.</p> </li> <li> <p>To prevent special characters in an attribute name
     * from being misinterpreted in an expression.</p> </li> </ul> <p>Use the <b>#</b>
     * character in an expression to dereference an attribute name. For example,
     * consider the following attribute name:</p> <ul> <li> <p> <code>Percentile</code>
     * </p> </li> </ul> <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>
     * <ul> <li> <p> <code>{"#P":"Percentile"}</code> </p> </li> </ul> <p>You could
     * then use this substitution in an expression, as in this example:</p> <ul> <li>
     * <p> <code>#P = :val</code> </p> </li> </ul>  <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>  <p>For more
     * information on 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>
     */
    inline GetItemRequest& AddExpressionAttributeNames(const char* key, const char* value) { m_expressionAttributeNamesHasBeenSet = true; m_expressionAttributeNames.emplace(key, value); return *this; }

  private:

    Aws::String m_tableName;
    bool m_tableNameHasBeenSet = false;

    Aws::Map<Aws::String, AttributeValue> m_key;
    bool m_keyHasBeenSet = false;

    Aws::Vector<Aws::String> m_attributesToGet;
    bool m_attributesToGetHasBeenSet = false;

    bool m_consistentRead;
    bool m_consistentReadHasBeenSet = false;

    ReturnConsumedCapacity m_returnConsumedCapacity;
    bool m_returnConsumedCapacityHasBeenSet = false;

    Aws::String m_projectionExpression;
    bool m_projectionExpressionHasBeenSet = false;

    Aws::Map<Aws::String, Aws::String> m_expressionAttributeNames;
    bool m_expressionAttributeNamesHasBeenSet = false;
  };

} // namespace Model
} // namespace DynamoDB
} // namespace Aws