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

Introduction

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

Prototype

public void setAttributesToGet(java.util.Collection<String> attributesToGet) 

Source Link

Document

This is a legacy parameter.

Usage

From source file:com.vivastream.dynamodb.core.DynamoDBTemplate.java

License:Apache License

public <T> List<T> query(String tableName, String indexName, Map<String, Condition> keyConditions,
        final ObjectExtractor<T> extractor, String... columnsToInclude) throws EmptyResultDataAccessException {
    Assert.notNull(tableName, "Table must not be null");
    Assert.notNull(extractor, "ObjectExtractor must not be null");
    if (logger.isDebugEnabled()) {
        logger.debug("Executing query on " + tableName + " for " + renderKey(keyConditions));
    }/*  w w  w  . j  a v  a  2 s.c  o  m*/

    QueryRequest request = new QueryRequest(tableName) //
            .withConsistentRead(false) // because query is used on GSIs [where consistent reads are not supported] - if we needed to query on the primary index could make this a parameter
            .withKeyConditions(keyConditions);

    if (columnsToInclude != null && columnsToInclude.length > 0) {
        request.setAttributesToGet(Arrays.asList(columnsToInclude));
    }

    if (indexName != null) {
        request.setIndexName(indexName);
    }

    QueryResult result = client.query(request);

    List<Map<String, AttributeValue>> items = result.getItems();
    List<T> convertedItems = new ArrayList<T>(items.size());
    for (Map<String, AttributeValue> item : items) {
        convertedItems.add(extractor.extract(item));
    }

    return convertedItems;
}

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