本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。
下列 C# 程式碼範例會建立資料表，並將資料上傳至資料表。如需在 Visual Studio 中執行此程式碼 step-by-step的說明，請參閱 .NET 程式碼範例。
using System;
using System.Collections.Generic;
using Amazon.DynamoDBv2;
using Amazon.DynamoDBv2.DocumentModel;
using Amazon.DynamoDBv2.Model;
using Amazon.Runtime;
using Amazon.SecurityToken;
namespace com.amazonaws.codesamples
{
class CreateTablesLoadData
{
private static AmazonDynamoDBClient client = new AmazonDynamoDBClient();
static void Main(string[] args)
{
try
{
//DeleteAllTables(client);
DeleteTable("ProductCatalog");
DeleteTable("Forum");
DeleteTable("Thread");
DeleteTable("Reply");
// Create tables (using the AWS SDK for .NET low-level API).
CreateTableProductCatalog();
CreateTableForum();
CreateTableThread(); // ForumTitle, Subject */
CreateTableReply();
// Load data (using the .NET SDK document API)
LoadSampleProducts();
LoadSampleForums();
LoadSampleThreads();
LoadSampleReplies();
Console.WriteLine("Sample complete!");
Console.WriteLine("Press ENTER to continue");
Console.ReadLine();
}
catch (AmazonServiceException e) { Console.WriteLine(e.Message); }
catch (Exception e) { Console.WriteLine(e.Message); }
}
private static void DeleteTable(string tableName)
{
try
{
var deleteTableResponse = client.DeleteTable(new DeleteTableRequest()
{
TableName = tableName
});
WaitTillTableDeleted(client, tableName, deleteTableResponse);
}
catch (ResourceNotFoundException)
{
// There is no such table.
}
}
private static void CreateTableProductCatalog()
{
string tableName = "ProductCatalog";
var response = client.CreateTable(new CreateTableRequest
{
TableName = tableName,
AttributeDefinitions = new List<AttributeDefinition>()
{
new AttributeDefinition
{
AttributeName = "Id",
AttributeType = "N"
}
},
KeySchema = new List<KeySchemaElement>()
{
new KeySchemaElement
{
AttributeName = "Id",
KeyType = "HASH"
}
},
ProvisionedThroughput = new ProvisionedThroughput
{
ReadCapacityUnits = 10,
WriteCapacityUnits = 5
}
});
WaitTillTableCreated(client, tableName, response);
}
private static void CreateTableForum()
{
string tableName = "Forum";
var response = client.CreateTable(new CreateTableRequest
{
TableName = tableName,
AttributeDefinitions = new List<AttributeDefinition>()
{
new AttributeDefinition
{
AttributeName = "Name",
AttributeType = "S"
}
},
KeySchema = new List<KeySchemaElement>()
{
new KeySchemaElement
{
AttributeName = "Name", // forum Title
KeyType = "HASH"
}
},
ProvisionedThroughput = new ProvisionedThroughput
{
ReadCapacityUnits = 10,
WriteCapacityUnits = 5
}
});
WaitTillTableCreated(client, tableName, response);
}
private static void CreateTableThread()
{
string tableName = "Thread";
var response = client.CreateTable(new CreateTableRequest
{
TableName = tableName,
AttributeDefinitions = new List<AttributeDefinition>()
{
new AttributeDefinition
{
AttributeName = "ForumName", // Hash attribute
AttributeType = "S"
},
new AttributeDefinition
{
AttributeName = "Subject",
AttributeType = "S"
}
},
KeySchema = new List<KeySchemaElement>()
{
new KeySchemaElement
{
AttributeName = "ForumName", // Hash attribute
KeyType = "HASH"
},
new KeySchemaElement
{
AttributeName = "Subject", // Range attribute
KeyType = "RANGE"
}
},
ProvisionedThroughput = new ProvisionedThroughput
{
ReadCapacityUnits = 10,
WriteCapacityUnits = 5
}
});
WaitTillTableCreated(client, tableName, response);
}
private static void CreateTableReply()
{
string tableName = "Reply";
var response = client.CreateTable(new CreateTableRequest
{
TableName = tableName,
AttributeDefinitions = new List<AttributeDefinition>()
{
new AttributeDefinition
{
AttributeName = "Id",
AttributeType = "S"
},
new AttributeDefinition
{
AttributeName = "ReplyDateTime",
AttributeType = "S"
},
new AttributeDefinition
{
AttributeName = "PostedBy",
AttributeType = "S"
}
},
KeySchema = new List<KeySchemaElement>()
{
new KeySchemaElement()
{
AttributeName = "Id",
KeyType = "HASH"
},
new KeySchemaElement()
{
AttributeName = "ReplyDateTime",
KeyType = "RANGE"
}
},
LocalSecondaryIndexes = new List<LocalSecondaryIndex>()
{
new LocalSecondaryIndex()
{
IndexName = "PostedBy_index",
KeySchema = new List<KeySchemaElement>() {
new KeySchemaElement() {
AttributeName = "Id", KeyType = "HASH"
},
new KeySchemaElement() {
AttributeName = "PostedBy", KeyType = "RANGE"
}
},
Projection = new Projection() {
ProjectionType = ProjectionType.KEYS_ONLY
}
}
},
ProvisionedThroughput = new ProvisionedThroughput
{
ReadCapacityUnits = 10,
WriteCapacityUnits = 5
}
});
WaitTillTableCreated(client, tableName, response);
}
private static void WaitTillTableCreated(AmazonDynamoDBClient client, string tableName,
CreateTableResponse response)
{
var tableDescription = response.TableDescription;
string status = tableDescription.TableStatus;
Console.WriteLine(tableName + " - " + status);
// Let us wait until table is created. Call DescribeTable.
while (status != "ACTIVE")
{
System.Threading.Thread.Sleep(5000); // Wait 5 seconds.
try
{
var res = client.DescribeTable(new DescribeTableRequest
{
TableName = tableName
});
Console.WriteLine("Table name: {0}, status: {1}", res.Table.TableName,
res.Table.TableStatus);
status = res.Table.TableStatus;
}
// Try-catch to handle potential eventual-consistency issue.
catch (ResourceNotFoundException)
{ }
}
}
private static void WaitTillTableDeleted(AmazonDynamoDBClient client, string tableName,
DeleteTableResponse response)
{
var tableDescription = response.TableDescription;
string status = tableDescription.TableStatus;
Console.WriteLine(tableName + " - " + status);
// Let us wait until table is created. Call DescribeTable
try
{
while (status == "DELETING")
{
System.Threading.Thread.Sleep(5000); // wait 5 seconds
var res = client.DescribeTable(new DescribeTableRequest
{
TableName = tableName
});
Console.WriteLine("Table name: {0}, status: {1}", res.Table.TableName,
res.Table.TableStatus);
status = res.Table.TableStatus;
}
}
catch (ResourceNotFoundException)
{
// Table deleted.
}
}
private static void LoadSampleProducts()
{
Table productCatalogTable = Table.LoadTable(client, "ProductCatalog");
// ********** Add Books *********************
var book1 = new Document();
book1["Id"] = 101;
book1["Title"] = "Book 101 Title";
book1["ISBN"] = "111-1111111111";
book1["Authors"] = new List<string> { "Author 1" };
book1["Price"] = -2; // *** Intentional value. Later used to illustrate scan.
book1["Dimensions"] = "8.5 x 11.0 x 0.5";
book1["PageCount"] = 500;
book1["InPublication"] = true;
book1["ProductCategory"] = "Book";
productCatalogTable.PutItem(book1);
var book2 = new Document();
book2["Id"] = 102;
book2["Title"] = "Book 102 Title";
book2["ISBN"] = "222-2222222222";
book2["Authors"] = new List<string> { "Author 1", "Author 2" }; ;
book2["Price"] = 20;
book2["Dimensions"] = "8.5 x 11.0 x 0.8";
book2["PageCount"] = 600;
book2["InPublication"] = true;
book2["ProductCategory"] = "Book";
productCatalogTable.PutItem(book2);
var book3 = new Document();
book3["Id"] = 103;
book3["Title"] = "Book 103 Title";
book3["ISBN"] = "333-3333333333";
book3["Authors"] = new List<string> { "Author 1", "Author2", "Author 3" }; ;
book3["Price"] = 2000;
book3["Dimensions"] = "8.5 x 11.0 x 1.5";
book3["PageCount"] = 700;
book3["InPublication"] = false;
book3["ProductCategory"] = "Book";
productCatalogTable.PutItem(book3);
// ************ Add bikes. *******************
var bicycle1 = new Document();
bicycle1["Id"] = 201;
bicycle1["Title"] = "18-Bike 201"; // size, followed by some title.
bicycle1["Description"] = "201 description";
bicycle1["BicycleType"] = "Road";
bicycle1["Brand"] = "Brand-Company A"; // Trek, Specialized.
bicycle1["Price"] = 100;
bicycle1["Color"] = new List<string> { "Red", "Black" };
bicycle1["ProductCategory"] = "Bike";
productCatalogTable.PutItem(bicycle1);
var bicycle2 = new Document();
bicycle2["Id"] = 202;
bicycle2["Title"] = "21-Bike 202Brand-Company A";
bicycle2["Description"] = "202 description";
bicycle2["BicycleType"] = "Road";
bicycle2["Brand"] = "";
bicycle2["Price"] = 200;
bicycle2["Color"] = new List<string> { "Green", "Black" };
bicycle2["ProductCategory"] = "Bicycle";
productCatalogTable.PutItem(bicycle2);
var bicycle3 = new Document();
bicycle3["Id"] = 203;
bicycle3["Title"] = "19-Bike 203";
bicycle3["Description"] = "203 description";
bicycle3["BicycleType"] = "Road";
bicycle3["Brand"] = "Brand-Company B";
bicycle3["Price"] = 300;
bicycle3["Color"] = new List<string> { "Red", "Green", "Black" };
bicycle3["ProductCategory"] = "Bike";
productCatalogTable.PutItem(bicycle3);
var bicycle4 = new Document();
bicycle4["Id"] = 204;
bicycle4["Title"] = "18-Bike 204";
bicycle4["Description"] = "204 description";
bicycle4["BicycleType"] = "Mountain";
bicycle4["Brand"] = "Brand-Company B";
bicycle4["Price"] = 400;
bicycle4["Color"] = new List<string> { "Red" };
bicycle4["ProductCategory"] = "Bike";
productCatalogTable.PutItem(bicycle4);
var bicycle5 = new Document();
bicycle5["Id"] = 205;
bicycle5["Title"] = "20-Title 205";
bicycle4["Description"] = "205 description";
bicycle5["BicycleType"] = "Hybrid";
bicycle5["Brand"] = "Brand-Company C";
bicycle5["Price"] = 500;
bicycle5["Color"] = new List<string> { "Red", "Black" };
bicycle5["ProductCategory"] = "Bike";
productCatalogTable.PutItem(bicycle5);
}
private static void LoadSampleForums()
{
Table forumTable = Table.LoadTable(client, "Forum");
var forum1 = new Document();
forum1["Name"] = "Amazon DynamoDB"; // PK
forum1["Category"] = "Amazon Web Services";
forum1["Threads"] = 2;
forum1["Messages"] = 4;
forum1["Views"] = 1000;
forumTable.PutItem(forum1);
var forum2 = new Document();
forum2["Name"] = "Amazon S3"; // PK
forum2["Category"] = "Amazon Web Services";
forum2["Threads"] = 1;
forumTable.PutItem(forum2);
}
private static void LoadSampleThreads()
{
Table threadTable = Table.LoadTable(client, "Thread");
// Thread 1.
var thread1 = new Document();
thread1["ForumName"] = "Amazon DynamoDB"; // Hash attribute.
thread1["Subject"] = "DynamoDB Thread 1"; // Range attribute.
thread1["Message"] = "DynamoDB thread 1 message text";
thread1["LastPostedBy"] = "User A";
thread1["LastPostedDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(14, 0, 0, 0));
thread1["Views"] = 0;
thread1["Replies"] = 0;
thread1["Answered"] = false;
thread1["Tags"] = new List<string> { "index", "primarykey", "table" };
threadTable.PutItem(thread1);
// Thread 2.
var thread2 = new Document();
thread2["ForumName"] = "Amazon DynamoDB"; // Hash attribute.
thread2["Subject"] = "DynamoDB Thread 2"; // Range attribute.
thread2["Message"] = "DynamoDB thread 2 message text";
thread2["LastPostedBy"] = "User A";
thread2["LastPostedDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(21, 0, 0, 0));
thread2["Views"] = 0;
thread2["Replies"] = 0;
thread2["Answered"] = false;
thread2["Tags"] = new List<string> { "index", "primarykey", "rangekey" };
threadTable.PutItem(thread2);
// Thread 3.
var thread3 = new Document();
thread3["ForumName"] = "Amazon S3"; // Hash attribute.
thread3["Subject"] = "S3 Thread 1"; // Range attribute.
thread3["Message"] = "S3 thread 3 message text";
thread3["LastPostedBy"] = "User A";
thread3["LastPostedDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(7, 0, 0, 0));
thread3["Views"] = 0;
thread3["Replies"] = 0;
thread3["Answered"] = false;
thread3["Tags"] = new List<string> { "largeobjects", "multipart upload" };
threadTable.PutItem(thread3);
}
private static void LoadSampleReplies()
{
Table replyTable = Table.LoadTable(client, "Reply");
// Reply 1 - thread 1.
var thread1Reply1 = new Document();
thread1Reply1["Id"] = "Amazon DynamoDB#DynamoDB Thread 1"; // Hash attribute.
thread1Reply1["ReplyDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(21, 0, 0, 0)); // Range attribute.
thread1Reply1["Message"] = "DynamoDB Thread 1 Reply 1 text";
thread1Reply1["PostedBy"] = "User A";
replyTable.PutItem(thread1Reply1);
// Reply 2 - thread 1.
var thread1reply2 = new Document();
thread1reply2["Id"] = "Amazon DynamoDB#DynamoDB Thread 1"; // Hash attribute.
thread1reply2["ReplyDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(14, 0, 0, 0)); // Range attribute.
thread1reply2["Message"] = "DynamoDB Thread 1 Reply 2 text";
thread1reply2["PostedBy"] = "User B";
replyTable.PutItem(thread1reply2);
// Reply 3 - thread 1.
var thread1Reply3 = new Document();
thread1Reply3["Id"] = "Amazon DynamoDB#DynamoDB Thread 1"; // Hash attribute.
thread1Reply3["ReplyDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(7, 0, 0, 0)); // Range attribute.
thread1Reply3["Message"] = "DynamoDB Thread 1 Reply 3 text";
thread1Reply3["PostedBy"] = "User B";
replyTable.PutItem(thread1Reply3);
// Reply 1 - thread 2.
var thread2Reply1 = new Document();
thread2Reply1["Id"] = "Amazon DynamoDB#DynamoDB Thread 2"; // Hash attribute.
thread2Reply1["ReplyDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(7, 0, 0, 0)); // Range attribute.
thread2Reply1["Message"] = "DynamoDB Thread 2 Reply 1 text";
thread2Reply1["PostedBy"] = "User A";
replyTable.PutItem(thread2Reply1);
// Reply 2 - thread 2.
var thread2Reply2 = new Document();
thread2Reply2["Id"] = "Amazon DynamoDB#DynamoDB Thread 2"; // Hash attribute.
thread2Reply2["ReplyDateTime"] = DateTime.UtcNow.Subtract(new TimeSpan(1, 0, 0, 0)); // Range attribute.
thread2Reply2["Message"] = "DynamoDB Thread 2 Reply 2 text";
thread2Reply2["PostedBy"] = "User A";
replyTable.PutItem(thread2Reply2);
}
}
}
