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

Introduction

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

Prototype

public QueryRequest()

Source Link

Document

Default constructor for QueryRequest object.

Usage

From source file:org.apache.hadoop.dynamodb.DynamoDBClient.java

License:Open Source License

public RetryResult<QueryResult> queryTable(String tableName, DynamoDBQueryFilter dynamoDBQueryFilter,
        Map<String, AttributeValue> exclusiveStartKey, long limit, Reporter reporter) {
    final QueryRequest queryRequest = new QueryRequest().withTableName(tableName)
            .withExclusiveStartKey(exclusiveStartKey).withKeyConditions(dynamoDBQueryFilter.getKeyConditions())
            .withLimit(Ints.checkedCast(limit)).withReturnConsumedCapacity(ReturnConsumedCapacity.TOTAL);

    RetryResult<QueryResult> retryResult = getRetryDriver().runWithRetry(new Callable<QueryResult>() {
        @Override//from  w  w w.j  a  va2  s  .c o m
        public QueryResult call() {
            log.debug("Executing DynamoDB query: " + queryRequest);
            return dynamoDB.query(queryRequest);
        }
    }, reporter, PrintCounter.DynamoDBReadThrottle);
    return retryResult;
}

From source file:org.selman.tweetamo.PersistentStore.java

License:Apache License

public QueryResult getLatestTweetsForScreenName(String screenName, long timestamp) throws Exception {
    try {//from  w ww .  j  a  va2  s .co m
        long startDateMilli = System.currentTimeMillis();

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

        keyConditions.put(COL_SCREENNAME, new Condition().withComparisonOperator(ComparisonOperator.EQ)
                .withAttributeValueList(new AttributeValue().withS(screenName)));

        keyConditions.put(COL_CREATEDAT,
                new Condition().withComparisonOperator(ComparisonOperator.BETWEEN).withAttributeValueList(
                        new AttributeValue().withN(Long.toString(timestamp)),
                        new AttributeValue().withN(Long.toString(startDateMilli))));

        QueryRequest queryRequest = new QueryRequest().withTableName(TABLE_NAME).withIndexName(INDEX_SCREENNAME)
                .withKeyConditions(keyConditions).withSelect(Select.ALL_ATTRIBUTES).withScanIndexForward(true);

        QueryResult result = dynamoDB.query(queryRequest);
        return result;
    } catch (Exception e) {
        handleException(e);
    }

    return null;
}

From source file:org.socialsignin.spring.data.dynamodb.repository.query.AbstractDynamoDBQueryCriteria.java

License:Apache License

protected QueryRequest buildQueryRequest(String tableName, String theIndexName, String hashKeyAttributeName,
        String rangeKeyAttributeName, String rangeKeyPropertyName, List<Condition> hashKeyConditions,
        List<Condition> rangeKeyConditions) {

    // TODO Set other query request properties based on config
    QueryRequest queryRequest = new QueryRequest();
    queryRequest.setTableName(tableName);
    queryRequest.setIndexName(theIndexName);

    if (isApplicableForGlobalSecondaryIndex()) {
        List<String> allowedSortProperties = new ArrayList<String>();

        for (Entry<String, List<Condition>> singlePropertyCondition : propertyConditions.entrySet()) {
            if (entityInformation.getGlobalSecondaryIndexNamesByPropertyName().keySet()
                    .contains(singlePropertyCondition.getKey())) {
                allowedSortProperties.add(singlePropertyCondition.getKey());
            }//  w w w.j  ava  2s .  c  o m
        }

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

        if (hashKeyConditions != null && hashKeyConditions.size() > 0) {
            for (Condition hashKeyCondition : hashKeyConditions) {
                keyConditions.put(hashKeyAttributeName, hashKeyCondition);
                allowedSortProperties.add(hashKeyPropertyName);
            }
        }
        if (rangeKeyConditions != null && rangeKeyConditions.size() > 0) {
            for (Condition rangeKeyCondition : rangeKeyConditions) {
                keyConditions.put(rangeKeyAttributeName, rangeKeyCondition);
                allowedSortProperties.add(rangeKeyPropertyName);
            }
        }

        for (Entry<String, List<Condition>> singleAttributeConditions : attributeConditions.entrySet()) {

            for (Condition condition : singleAttributeConditions.getValue()) {
                keyConditions.put(singleAttributeConditions.getKey(), condition);
            }
        }

        if (sort != null) {
            for (Order order : sort) {
                final String sortProperty = order.getProperty();
                if (entityInformation.isGlobalIndexRangeKeyProperty(sortProperty)) {
                    allowedSortProperties.add(sortProperty);
                }
            }
        }

        queryRequest.setKeyConditions(keyConditions);
        queryRequest.setSelect(Select.ALL_PROJECTED_ATTRIBUTES);
        applySortIfSpecified(queryRequest, new ArrayList<String>(new HashSet<String>(allowedSortProperties)));
    }
    return queryRequest;
}