Example usage for com.amazonaws.services.dynamodbv2.model ComparisonOperator EQ

List of usage examples for com.amazonaws.services.dynamodbv2.model ComparisonOperator EQ

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Introduction

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

Prototype

ComparisonOperator EQ

To view the source code for com.amazonaws.services.dynamodbv2.model ComparisonOperator EQ.

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Usage

From source file:RandomQuery1OnDynamoDB.java

License:Open Source License

public static void main(String[] args) throws Exception {
    init();//from  www  .j  a  va 2 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);

        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());
    }
}

From source file:RandomQuery2OnDynamoDB.java

License:Open Source License

public static void main(String[] args) throws Exception {
    init();//from ww  w.j  a va 2  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());
    }
}

From source file:amazon.dynamodb.config.DynamoDBManager.java

License:Open Source License

/**
 * Query Amazon DynamoDB/*from ww  w.jav  a2s.  c om*/
 *
 * @param hashKey Hash key for the query request.
 *
 * @param range The range of geohashs to query.
 *
 * @return The query result.
 */
public List<QueryResult> queryGeohash(QueryRequest queryRequest, long hashKey, GeoHashRango range) {
    List<QueryResult> queryResults = new ArrayList<QueryResult>();
    Map<String, AttributeValue> lastEvaluatedKey = null;

    do {
        Map<String, Condition> keyConditions = new HashMap<String, Condition>();

        Condition hashKeyCondition = new Condition().withComparisonOperator(ComparisonOperator.EQ)
                .withAttributeValueList(new AttributeValue().withN(String.valueOf(hashKey)));
        keyConditions.put(config.getHashKeyAttributeName(), hashKeyCondition);

        AttributeValue minRange = new AttributeValue().withN(Long.toString(range.getRangeMin()));
        AttributeValue maxRange = new AttributeValue().withN(Long.toString(range.getRangeMax()));

        Condition geohashCondition = new Condition().withComparisonOperator(ComparisonOperator.BETWEEN)
                .withAttributeValueList(minRange, maxRange);
        keyConditions.put(config.getGeohashAttributeName(), geohashCondition);

        queryRequest.withTableName(config.getTableName()).withKeyConditions(keyConditions)
                .withIndexName(config.getGeohashIndexName()).withConsistentRead(true)
                .withReturnConsumedCapacity(ReturnConsumedCapacity.TOTAL)
                .withExclusiveStartKey(lastEvaluatedKey);

        QueryResult queryResult = config.getDynamoDBClient().query(queryRequest);
        queryResults.add(queryResult);

        lastEvaluatedKey = queryResult.getLastEvaluatedKey();

    } while (lastEvaluatedKey != null);

    return queryResults;
}

From source file:com.amazon.janusgraph.diskstorage.dynamodb.builder.SingleExpectedAttributeValueBuilder.java

License:Open Source License

private void addExpectedValueIfPresent(final StaticBuffer column,
        final Map<String, ExpectedAttributeValue> expectedValueMap) {
    final String dynamoDbColumn = encodeKeyBuffer(column);

    if (expectedValueMap.containsKey(dynamoDbColumn)) {
        return;/*  w ww . j  ava  2  s. co m*/
    }

    if (transaction.contains(store, key, column)) {
        final StaticBuffer expectedValue = transaction.get(store, key, column);
        final ExpectedAttributeValue expectedAttributeValue;
        if (expectedValue == null) {
            expectedAttributeValue = new ExpectedAttributeValue().withExists(false);
        } else {
            final AttributeValue attributeValue = encodeValue(expectedValue);
            expectedAttributeValue = new ExpectedAttributeValue().withValue(attributeValue)
                    .withComparisonOperator(ComparisonOperator.EQ);
        }
        expectedValueMap.put(dynamoDbColumn, expectedAttributeValue);
    }
}

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;
    }/*w  w w  . j  a  v  a 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();
    }//  ww w . j  a v a2 s . co  m
    return result;
}

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   ww  w .  j  a  v a 2 s . c  om
    return null;
}

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;
    }//from  ww  w. ja v a 2s. co m
    return false;

}

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

License:Open Source License

public boolean validateName(String UserName, String Password) {

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

    Map<String, Condition> scanFilter = new HashMap<String, Condition>();
    scanFilter.put("UserName", new Condition().withAttributeValueList(new AttributeValue(UserName))
            .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;
    }/*from w  w w.  ja v  a 2  s.  com*/
    return false;

}

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

License:Open Source License

public String getUserIDfromUserName(String UserName) {
    String result = "";
    ScanRequest scanRequest = new ScanRequest("Users");
    //scanRequest.setConditionalOperator(ConditionalOperator.OR);

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

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

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

        result = item.get("UserID").toString().replaceAll("\\W", "").trim().toLowerCase();
        result = result.replaceAll("\\D", "");
    }/*from  w ww .  j av a2 s . co  m*/
    return result;
}