Example usage for com.amazonaws.services.dynamodbv2.model ScanRequest ScanRequest

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.model ScanRequest ScanRequest.

Prototype

public ScanRequest(String tableName) 

Source Link

Document

Constructs a new ScanRequest object.

Usage

From source file:AmazonDynamoDBSample_PutThrottled.java

License:Open Source License

public static void main(String[] args) throws Exception {
    init();/*from w w w  . j  av a2  s  . c  o  m*/

    try {
        String tableName = "my-favorite-movies-table";

        // Create a table with a primary hash key named 'name', which holds
        // a string
        CreateTableRequest createTableRequest = new CreateTableRequest().withTableName(tableName)
                .withKeySchema(new KeySchemaElement().withAttributeName("name").withKeyType(KeyType.HASH))
                .withAttributeDefinitions(new AttributeDefinition().withAttributeName("name")
                        .withAttributeType(ScalarAttributeType.S))
                .withProvisionedThroughput(
                        new ProvisionedThroughput().withReadCapacityUnits(1L).withWriteCapacityUnits(1L));

        // Create table if it does not exist yet
        TableUtils.createTableIfNotExists(dynamoDB, createTableRequest);
        // wait for the table to move into ACTIVE state
        TableUtils.waitUntilActive(dynamoDB, tableName);

        // Describe our new table
        DescribeTableRequest describeTableRequest = new DescribeTableRequest().withTableName(tableName);
        TableDescription tableDescription = dynamoDB.describeTable(describeTableRequest).getTable();
        System.out.println("Table Description: " + tableDescription);

        // Add an item
        Map<String, AttributeValue> item = newItem("Bill & Ted's Excellent Adventure", 1989, "****", "James",
                "Sara");
        PutItemRequest putItemRequest = new PutItemRequest(tableName, item);
        PutItemResult putItemResult = dynamoDB.putItem(putItemRequest);
        System.out.println("Result: " + putItemResult);

        // Add another item
        item = newItem("Airplane", 1980, "*****", "James", "Billy Bob");
        putItemRequest = new PutItemRequest(tableName, item);
        putItemResult = dynamoDB.putItem(putItemRequest);
        System.out.println("Result: " + putItemResult);

        Thread[] thrds = new Thread[16];
        for (int i = 0; i < thrds.length; i++) {
            thrds[i] = newItemCreationThread(tableName, i);
            thrds[i].start();
        }
        for (Thread thrd : thrds) {
            thrd.join();
        }

        // Scan items for movies with a year attribute greater than 1985
        HashMap<String, Condition> scanFilter = new HashMap<String, Condition>();
        Condition condition = new Condition().withComparisonOperator(ComparisonOperator.GT.toString())
                .withAttributeValueList(new AttributeValue().withN("1985"));
        scanFilter.put("year", condition);
        ScanRequest scanRequest = new ScanRequest(tableName).withScanFilter(scanFilter);
        ScanResult scanResult = dynamoDB.scan(scanRequest);
        System.out.println("Result: " + scanResult);

    } catch (AmazonServiceException ase) {
        System.out.println("Caught an AmazonServiceException, which means your request made it "
                + "to AWS, but was rejected with an error response for some reason.");
        System.out.println("Error Message:    " + ase.getMessage());
        System.out.println("HTTP Status Code: " + ase.getStatusCode());
        System.out.println("AWS Error Code:   " + ase.getErrorCode());
        System.out.println("Error Type:       " + ase.getErrorType());
        System.out.println("Request ID:       " + ase.getRequestId());
    } catch (AmazonClientException ace) {
        System.out.println("Caught an AmazonClientException, which means the client encountered "
                + "a serious internal problem while trying to communicate with AWS, "
                + "such as not being able to access the network.");
        System.out.println("Error Message: " + ace.getMessage());
    }
}

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From source file:RandomQuery1OnDynamoDB.java

License:Open Source License

public static void main(String[] args) throws Exception {
    init();/*from ww w.j  ava2  s .c  o m*/

    try {

        // Describe our new table
        DescribeTableRequest describeTableRequest = new DescribeTableRequest().withTableName(tableName);
        TableDescription tableDescription = dynamoDB.describeTable(describeTableRequest).getTable();
        System.out.println("Table Description: " + tableDescription);

        System.out.println("Table count :" + tableDescription.getItemCount());

        long lStartTime = new Date().getTime();
        System.out.println("start time: " + lStartTime);
        Random rn = new Random();
        // Scan items for movies with a year attribute greater than 1985
        Long lItem = tableDescription.getItemCount();
        int iNoOfItems = lItem.intValue();
        System.out.println("no of item " + lItem);
        for (int i = 0; i <= 49999; i++) {
            String randomInt = Integer.toString(rn.nextInt(iNoOfItems));
            HashMap<String, Condition> scanFilter = new HashMap<String, Condition>();
            Condition condition = new Condition().withComparisonOperator(ComparisonOperator.EQ.toString())
                    .withAttributeValueList(new AttributeValue().withN(randomInt));
            scanFilter.put("id", condition);
            ScanRequest scanRequest = new ScanRequest(tableName).withScanFilter(scanFilter);
            ScanResult scanResult = dynamoDB.scan(scanRequest);
            System.out.println("Random No :" + randomInt + ":: Query no: " + (i + 1));

        }
        // calculate time difference for update file time
        long lEndTime = new Date().getTime();
        long difference = lEndTime - lStartTime;
        System.out.println("Elapsed milliseconds: " + difference);
        System.out.println("Elapsed seconds: " + difference * 0.001);
        System.out.println("Elapsed Minutes: " + (int) ((difference / (1000 * 60)) % 60));

    } catch (AmazonServiceException ase) {
        System.out.println("Caught an AmazonServiceException, which means your request made it "
                + "to AWS, but was rejected with an error response for some reason.");
        System.out.println("Error Message:    " + ase.getMessage());
        System.out.println("HTTP Status Code: " + ase.getStatusCode());
        System.out.println("AWS Error Code:   " + ase.getErrorCode());
        System.out.println("Error Type:       " + ase.getErrorType());
        System.out.println("Request ID:       " + ase.getRequestId());
    } catch (AmazonClientException ace) {
        System.out.println("Caught an AmazonClientException, which means the client encountered "
                + "a serious internal problem while trying to communicate with AWS, "
                + "such as not being able to access the network.");
        System.out.println("Error Message: " + ace.getMessage());
    }
}

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From source file:RandomQuery2OnDynamoDB.java

License:Open Source License

public static void main(String[] args) throws Exception {
    init();/*from w  w w .  jav a2  s .co m*/

    try {

        // Describe our new table
        DescribeTableRequest describeTableRequest = new DescribeTableRequest().withTableName(tableName);
        TableDescription tableDescription = dynamoDB.describeTable(describeTableRequest).getTable();
        System.out.println("Table Description: " + tableDescription);
        long lStartTime = new Date().getTime();
        System.out.println("start time: " + lStartTime);
        Random rn = new Random();
        Long lItem = tableDescription.getItemCount();
        int iNoOfItems = lItem.intValue();
        int iPointOnePercent = (int) ((int) iNoOfItems * 0.001);
        int iOnePercent = (int) ((int) iNoOfItems * 0.01);
        System.out.println("TotalItems:" + iNoOfItems + "::0.1% of data is :: " + iPointOnePercent
                + "::1% of data is :" + iOnePercent);

        // Generating 25000 random queries for 0.1 to 1 % of the data
        for (int i = 0; i <= 24999; i++) {
            String randomInt = Integer.toString(rn.nextInt(iOnePercent - iPointOnePercent) + iPointOnePercent);
            HashMap<String, Condition> scanFilter = new HashMap<String, Condition>();
            Condition condition = new Condition().withComparisonOperator(ComparisonOperator.EQ.toString())
                    .withAttributeValueList(new AttributeValue().withN(randomInt));
            scanFilter.put("id", condition);
            ScanRequest scanRequest = new ScanRequest(tableName).withScanFilter(scanFilter);
            ScanResult scanResult = dynamoDB.scan(scanRequest);
            System.out.println("Random No :" + randomInt + ":: Query no: " + (i + 1));

        }
        // calculate time difference for update file time
        long lEndTime = new Date().getTime();
        long difference = lEndTime - lStartTime;
        System.out.println("Elapsed milliseconds: " + difference);
        System.out.println("Elapsed seconds: " + difference * 0.001);
        System.out.println("Elapsed Minutes: " + (int) ((difference / (1000 * 60)) % 60));

    } catch (AmazonServiceException ase) {
        System.out.println("Caught an AmazonServiceException, which means your request made it "
                + "to AWS, but was rejected with an error response for some reason.");
        System.out.println("Error Message:    " + ase.getMessage());
        System.out.println("HTTP Status Code: " + ase.getStatusCode());
        System.out.println("AWS Error Code:   " + ase.getErrorCode());
        System.out.println("Error Type:       " + ase.getErrorType());
        System.out.println("Request ID:       " + ase.getRequestId());
    } catch (AmazonClientException ace) {
        System.out.println("Caught an AmazonClientException, which means the client encountered "
                + "a serious internal problem while trying to communicate with AWS, "
                + "such as not being able to access the network.");
        System.out.println("Error Message: " + ace.getMessage());
    }
}

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From source file:awslabs.lab51.SolutionCode.java

License:Open Source License

@Override
public List<Map<String, AttributeValue>> getImageItems(AmazonDynamoDBClient dynamoDbClient) {
    try {//from w w  w. j  a  v a2s.c  o  m
        String tableName = System.getProperty("SESSIONTABLE");
        String keyPrefix = System.getProperty("PARAM3");

        ScanRequest scanRequest = new ScanRequest(tableName).withSelect("ALL_ATTRIBUTES");

        if (!keyPrefix.isEmpty()) {
            Map<String, Condition> scanFilter = new HashMap<String, Condition>();
            scanFilter.put("Key", new Condition().withAttributeValueList(new AttributeValue().withS(keyPrefix))
                    .withComparisonOperator("BEGINS_WITH"));
            scanRequest.withScanFilter(scanFilter);
        }

        return dynamoDbClient.scan(scanRequest).getItems();
    } catch (Exception ex) {
        labController.logMessageToPage("getImageItems Error: " + ex.getMessage() + ":" + ex.getStackTrace());
        return null;
    }
}

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From source file:br.com.faccilitacorretor.middleware.dynamo.AmazonDynamoDBSample.java

License:Open Source License

public static void main(String[] args) throws Exception {
    init();//from w ww .j  av  a  2s.co m

    try {
        String tableName = "my-favorite-movies-table";

        // Create table if it does not exist yet
        if (Tables.doesTableExist(dynamoDB, tableName)) {
            System.out.println("Table " + tableName + " is already ACTIVE");
        } else {
            // Create a table with a primary hash key named 'name', which holds a string
            CreateTableRequest createTableRequest = new CreateTableRequest().withTableName(tableName)
                    .withKeySchema(new KeySchemaElement().withAttributeName("name").withKeyType(KeyType.HASH))
                    .withAttributeDefinitions(new AttributeDefinition().withAttributeName("name")
                            .withAttributeType(ScalarAttributeType.S))
                    .withProvisionedThroughput(
                            new ProvisionedThroughput().withReadCapacityUnits(1L).withWriteCapacityUnits(1L));
            TableDescription createdTableDescription = dynamoDB.createTable(createTableRequest)
                    .getTableDescription();
            System.out.println("Created Table: " + createdTableDescription);

            // Wait for it to become active
            System.out.println("Waiting for " + tableName + " to become ACTIVE...");
            Tables.awaitTableToBecomeActive(dynamoDB, tableName);
        }

        // Describe our new table
        DescribeTableRequest describeTableRequest = new DescribeTableRequest().withTableName(tableName);
        TableDescription tableDescription = dynamoDB.describeTable(describeTableRequest).getTable();
        System.out.println("Table Description: " + tableDescription);

        // Add an item
        Map<String, AttributeValue> item = newItem("Bill & Ted's Excellent Adventure", 1989, "****", "James",
                "Sara");
        PutItemRequest putItemRequest = new PutItemRequest(tableName, item);
        PutItemResult putItemResult = dynamoDB.putItem(putItemRequest);
        System.out.println("Result: " + putItemResult);

        // Add another item
        item = newItem("Airplane", 1980, "*****", "James", "Billy Bob");
        putItemRequest = new PutItemRequest(tableName, item);
        putItemResult = dynamoDB.putItem(putItemRequest);
        System.out.println("Result: " + putItemResult);

        // Scan items for movies with a year attribute greater than 1985
        HashMap<String, Condition> scanFilter = new HashMap<String, Condition>();
        Condition condition = new Condition().withComparisonOperator(ComparisonOperator.GT.toString())
                .withAttributeValueList(new AttributeValue().withN("1985"));
        scanFilter.put("year", condition);
        ScanRequest scanRequest = new ScanRequest(tableName).withScanFilter(scanFilter);
        ScanResult scanResult = dynamoDB.scan(scanRequest);
        System.out.println("Result: " + scanResult);

    } catch (AmazonServiceException ase) {
        System.out.println("Caught an AmazonServiceException, which means your request made it "
                + "to AWS, but was rejected with an error response for some reason.");
        System.out.println("Error Message:    " + ase.getMessage());
        System.out.println("HTTP Status Code: " + ase.getStatusCode());
        System.out.println("AWS Error Code:   " + ase.getErrorCode());
        System.out.println("Error Type:       " + ase.getErrorType());
        System.out.println("Request ID:       " + ase.getRequestId());
    } catch (AmazonClientException ace) {
        System.out.println("Caught an AmazonClientException, which means the client encountered "
                + "a serious internal problem while trying to communicate with AWS, "
                + "such as not being able to access the network.");
        System.out.println("Error Message: " + ace.getMessage());
    }
}

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From source file:com.app.dynamoDb.DynamoFacebookUsers.java

License:Open Source License

public boolean isExist(String UserID) {
    ScanRequest scanRequest = new ScanRequest("FacebookUsers");

    Map<String, Condition> scanFilter = new HashMap<String, Condition>();
    scanFilter.put("UserID", new Condition().withAttributeValueList(new AttributeValue(UserID))
            .withComparisonOperator(ComparisonOperator.EQ));

    scanRequest.setScanFilter(scanFilter);
    ScanResult scanResult = dynamoDB.scan(scanRequest);

    for (Map<String, AttributeValue> item : scanResult.getItems()) {
        if (!(item.isEmpty()))
            return true;
    }/*from  w  w  w  .  j a va 2s  .c o m*/
    return false;
}

---

From source file:com.app.dynamoDb.DynamoFacebookUsers.java

License:Open Source License

public String getUserName(String UserID) {
    String result = "";
    ScanRequest scanRequest = new ScanRequest("FacebookUsers");

    Map<String, Condition> scanFilter = new HashMap<String, Condition>();
    scanFilter.put("UserID", new Condition().withAttributeValueList(new AttributeValue(UserID))
            .withComparisonOperator(ComparisonOperator.EQ));

    scanRequest.setScanFilter(scanFilter);
    ScanResult scanResult = dynamoDB.scan(scanRequest);

    for (Map<String, AttributeValue> item : scanResult.getItems()) {
        System.out.println(item.get("UserName"));

        result = item.get("UserName").toString();
    }/*  w w w .  j ava2s.  c  o m*/
    return result;
}

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From source file:com.app.dynamoDb.DynamoFacebookUsers.java

License:Open Source License

public AttributeValue getUserID(String UserName) {

    ScanRequest scanRequest = new ScanRequest("FacebookUsers");

    Map<String, Condition> scanFilter = new HashMap<String, Condition>();
    scanFilter.put("Email", new Condition().withAttributeValueList(new AttributeValue(UserName))
            .withComparisonOperator(ComparisonOperator.EQ));
    scanRequest.setScanFilter(scanFilter);
    ScanResult scanResult = dynamoDB.scan(scanRequest);

    for (Map<String, AttributeValue> item : scanResult.getItems()) {
        return item.get("UserID");

    }/*from  w  w  w.  j  a v a2s  . com*/
    return null;
}

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From source file:com.app.dynamoDb.DynamoUser.java

License:Open Source License

@SuppressWarnings("null")
public void insert(String UserName, String Password, String Email) {

    ScanRequest scanRequest = new ScanRequest("Users");
    ScanResult scanResult = dynamoDB.scan(scanRequest);
    int s[] = new int[100];
    int i = 0;/*w w w  .  ja v  a 2s  . co m*/

    for (Map<String, AttributeValue> item : scanResult.getItems()) {
        s[i] = Integer.valueOf(item.get("UserID").getS());
        i++;
    }
    Arrays.sort(s);
    int max = s[s.length - 1];
    String userid = String.valueOf(max + 1);

    Map<String, AttributeValue> item = new HashMap<String, AttributeValue>();
    item.put("UserID", new AttributeValue(userid));
    item.put("UserName", new AttributeValue(UserName));
    item.put("Password", new AttributeValue(Password));
    item.put("Email", new AttributeValue(Email));
    this.setUserID(userid);
    this.setUserName(UserName);
    this.setPassword(Password);
    this.setEmail(Email);

    PutItemRequest putItemRequest = new PutItemRequest("Users", item);
    PutItemResult putItemResult = dynamoDB.putItem(putItemRequest);

}

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From source file:com.app.dynamoDb.DynamoUser.java

License:Open Source License

public boolean validateEmail(String Email, String Password) {

    ScanRequest scanRequest = new ScanRequest("Users");
    scanRequest.setConditionalOperator(ConditionalOperator.AND);

    Map<String, Condition> scanFilter = new HashMap<String, Condition>();
    scanFilter.put("Email", new Condition().withAttributeValueList(new AttributeValue(Email))
            .withComparisonOperator(ComparisonOperator.EQ));
    scanFilter.put("Password", new Condition().withAttributeValueList(new AttributeValue(Password))
            .withComparisonOperator(ComparisonOperator.EQ));

    scanRequest.setScanFilter(scanFilter);
    ScanResult scanResult = dynamoDB.scan(scanRequest);

    for (Map<String, AttributeValue> item : scanResult.getItems()) {
        //System.out.println(item);

        if (!item.isEmpty())
            return true;
    }//  w  w w  . j  a  v a  2s  . c  o  m
    return false;

}

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