Examples with ValueMap com.amazonaws.services.dynamodbv2.document.utils.ValueMap used on opensource projects

Example 16 with ValueMap

use of com.amazonaws.services.dynamodbv2.document.utils.ValueMap in project aws-doc-sdk-examples by awsdocs.

the class DocumentAPIQuery method findRepliesUsingAFilterExpression.

private static void findRepliesUsingAFilterExpression(String forumName, String threadSubject) {
    Table table = dynamoDB.getTable(tableName);
    String replyId = forumName + "#" + threadSubject;
    QuerySpec spec = new QuerySpec().withProjectionExpression("Message, ReplyDateTime, PostedBy").withKeyConditionExpression("Id = :v_id").withFilterExpression("PostedBy = :v_postedby").withValueMap(new ValueMap().withString(":v_id", replyId).withString(":v_postedby", "User B"));
    ItemCollection<QueryOutcome> items = table.query(spec);
    System.out.println("\nfindRepliesUsingAFilterExpression results:");
    Iterator<Item> iterator = items.iterator();
    while (iterator.hasNext()) {
        System.out.println(iterator.next().toJSONPretty());
    }
}

Example 17 with ValueMap

use of com.amazonaws.services.dynamodbv2.document.utils.ValueMap in project aws-doc-sdk-examples by awsdocs.

the class MoviesItemOps05 method main.

public static void main(String[] args) throws Exception {
    AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard().withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration("http://localhost:8000", "us-west-2")).build();
    DynamoDB dynamoDB = new DynamoDB(client);
    Table table = dynamoDB.getTable("Movies");
    int year = 2015;
    String title = "The Big New Movie";
    UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey(new PrimaryKey("year", year, "title", title)).withUpdateExpression("remove info.actors[0]").withConditionExpression("size(info.actors) > :num").withValueMap(new ValueMap().withNumber(":num", 3)).withReturnValues(ReturnValue.UPDATED_NEW);
    // Conditional update (we expect this to fail)
    try {
        System.out.println("Attempting a conditional update...");
        UpdateItemOutcome outcome = table.updateItem(updateItemSpec);
        System.out.println("UpdateItem succeeded:\n" + outcome.getItem().toJSONPretty());
    } catch (Exception e) {
        System.err.println("Unable to update item: " + year + " " + title);
        System.err.println(e.getMessage());
    }
}

Example 18 with ValueMap

use of com.amazonaws.services.dynamodbv2.document.utils.ValueMap in project aws-doc-sdk-examples by awsdocs.

the class MoviesScan method main.

public static void main(String[] args) throws Exception {
    AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard().withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration("http://localhost:8000", "us-west-2")).build();
    DynamoDB dynamoDB = new DynamoDB(client);
    Table table = dynamoDB.getTable("Movies");
    ScanSpec scanSpec = new ScanSpec().withProjectionExpression("#yr, title, info.rating").withFilterExpression("#yr between :start_yr and :end_yr").withNameMap(new NameMap().with("#yr", "year")).withValueMap(new ValueMap().withNumber(":start_yr", 1950).withNumber(":end_yr", 1959));
    try {
        ItemCollection<ScanOutcome> items = table.scan(scanSpec);
        Iterator<Item> iter = items.iterator();
        while (iter.hasNext()) {
            Item item = iter.next();
            System.out.println(item.toString());
        }
    } catch (Exception e) {
        System.err.println("Unable to scan the table:");
        System.err.println(e.getMessage());
    }
}

Example 19 with ValueMap

use of com.amazonaws.services.dynamodbv2.document.utils.ValueMap in project aws-doc-sdk-examples by awsdocs.

the class MoviesItemOps04 method main.

public static void main(String[] args) throws Exception {
    AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard().withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration("http://localhost:8000", "us-west-2")).build();
    DynamoDB dynamoDB = new DynamoDB(client);
    Table table = dynamoDB.getTable("Movies");
    int year = 2015;
    String title = "The Big New Movie";
    UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey("year", year, "title", title).withUpdateExpression("set info.rating = info.rating + :val").withValueMap(new ValueMap().withNumber(":val", 1)).withReturnValues(ReturnValue.UPDATED_NEW);
    try {
        System.out.println("Incrementing an atomic counter...");
        UpdateItemOutcome outcome = table.updateItem(updateItemSpec);
        System.out.println("UpdateItem succeeded:\n" + outcome.getItem().toJSONPretty());
    } catch (Exception e) {
        System.err.println("Unable to update item: " + year + " " + title);
        System.err.println(e.getMessage());
    }
}

Example 20 with ValueMap

use of com.amazonaws.services.dynamodbv2.document.utils.ValueMap in project aws-doc-sdk-examples by awsdocs.

the class DocumentAPIItemCRUDExample method deleteItem.

private static void deleteItem() {
    Table table = dynamoDB.getTable(tableName);
    try {
        DeleteItemSpec deleteItemSpec = new DeleteItemSpec().withPrimaryKey("Id", 120).withConditionExpression("#ip = :val").withNameMap(new NameMap().with("#ip", "InPublication")).withValueMap(new ValueMap().withBoolean(":val", false)).withReturnValues(ReturnValue.ALL_OLD);
        DeleteItemOutcome outcome = table.deleteItem(deleteItemSpec);
        // Check the response.
        System.out.println("Printing item that was deleted...");
        System.out.println(outcome.getItem().toJSONPretty());
    } catch (Exception e) {
        System.err.println("Error deleting item in " + tableName);
        System.err.println(e.getMessage());
    }
}