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Swift: dynamodb - update #6913

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Merged
merged 4 commits into from
Sep 23, 2024
Merged

Swift: dynamodb - update #6913

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eceddcc
basics done
meyertst-aws Sep 20, 2024
684befc
ListTables done
meyertst-aws Sep 20, 2024
6b311b2
BatchGetItem updates
meyertst-aws Sep 23, 2024
f5fe169
Fix from comments
meyertst-aws Sep 23, 2024
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24 changes: 15 additions & 9 deletions swift/example_code/dynamodb/BatchGetItem/Sources/Movie.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -5,8 +5,8 @@
// SPDX-License-Identifier: Apache-2.0

// snippet-start:[ddb.swift.batchgetitem.movie]
import Foundation
import AWSDynamoDB
import Foundation

// snippet-start:[ddb.swift.batchgetitem.info]
/// The optional details about a movie.
Expand All @@ -16,6 +16,7 @@ public struct Info: Codable {
/// The movie's plot, if available.
var plot: String?
}

// snippet-end:[ddb.swift.batchgetitem.info]

public struct Movie: Codable {
Expand All @@ -42,6 +43,7 @@ public struct Movie: Codable {

self.info = Info(rating: rating, plot: plot)
}

// snippet-end:[ddb.swift.batchgetitem.movie.init]

// snippet-start:[ddb.swift.batchgetitem.movie.init-info]
Expand All @@ -63,21 +65,23 @@ public struct Movie: Codable {
self.info = Info(rating: nil, plot: nil)
}
}

// snippet-end:[ddb.swift.batchgetitem.movie.init-info]

// snippet-start:[ddb.swift.batchgetitem.movie.init-withitem]
///
/// Return a new `MovieTable` object, given an array mapping string to Amazon
/// DynamoDB attribute values.
///
///
/// - Parameter item: The item information provided in the form used by
/// DynamoDB. This is an array of strings mapped to
/// `DynamoDBClientTypes.AttributeValue` values.
init(withItem item: [Swift.String:DynamoDBClientTypes.AttributeValue]) throws {
init(withItem item: [Swift.String: DynamoDBClientTypes.AttributeValue]) throws {
// Read the attributes.

guard let titleAttr = item["title"],
let yearAttr = item["year"] else {
let yearAttr = item["year"]
else {
throw MovieError.ItemNotFound
}
let infoAttr = item["info"] ?? nil
Expand Down Expand Up @@ -116,6 +120,7 @@ public struct Movie: Codable {

self.info = Info(rating: rating, plot: plot)
}

// snippet-end:[ddb.swift.batchgetitem.movie.init-withitem]

// snippet-start:[ddb.swift.batchgetitem.movie.getasitem]
Expand All @@ -127,19 +132,19 @@ public struct Movie: Codable {
/// - Returns: The movie item as an array of type
/// `[Swift.String:DynamoDBClientTypes.AttributeValue]`.
///
func getAsItem() async throws -> [Swift.String:DynamoDBClientTypes.AttributeValue] {
func getAsItem() async throws -> [Swift.String: DynamoDBClientTypes.AttributeValue] {
// Build the item record, starting with the year and title, which are
// always present.

var item: [Swift.String:DynamoDBClientTypes.AttributeValue] = [
"year": .n(String(self.year)),
"title": .s(self.title)
var item: [Swift.String: DynamoDBClientTypes.AttributeValue] = [
"year": .n(String(year)),
"title": .s(title)
]

// Add the `info` field with the rating and/or plot if they're
// available.

var info: [Swift.String:DynamoDBClientTypes.AttributeValue] = [:]
var info: [Swift.String: DynamoDBClientTypes.AttributeValue] = [:]
if self.info.rating != nil {
info["rating"] = .n(String(self.info.rating!))
}
Expand All @@ -152,4 +157,5 @@ public struct Movie: Codable {
}
// snippet-end:[ddb.swift.batchgetitem.movie.getasitem]
}

// snippet-end:[ddb.swift.batchgetitem.movie]
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