Example usage for com.amazonaws.services.dynamodbv2.document Item attributes

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.document Item attributes.

Prototype

Map attributes

To view the source code for com.amazonaws.services.dynamodbv2.document Item attributes.

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Usage

From source file:com.github.sdmcraft.slingdynamo.impl.DynamoDBResourceProvider.java

License:Open Source License

/**
 * Gets the children./*from  w  w  w .  ja v  a 2 s  . c om*/
 *
 * @param dbtable the dbtable
 * @param parent the parent
 * @param childIds the child ids
 * @param path the path
 * @param resolver the resolver
 * @return the children
 */
private List<Resource> getChildren(Table dbtable, int parent, Object[] childIds, String path,
        ResourceResolver resolver) {
    ScanFilter idFilter = new ScanFilter("parent").in(parent);
    ScanFilter childIdsFilter = new ScanFilter("child_id").in(childIds);
    ItemCollection<ScanOutcome> items = dbtable.scan(idFilter, childIdsFilter);
    Iterator<Item> itemItr = items.iterator();
    List<Resource> children = new ArrayList<Resource>();

    while (itemItr.hasNext()) {
        Item item = itemItr.next();
        Iterable<Entry<String, Object>> attributes = item.attributes();
        Iterator<Entry<String, Object>> attributesItr = attributes.iterator();
        Map<String, Object> resourceProps = new HashMap<String, Object>();

        while (attributesItr.hasNext()) {
            Entry<String, Object> attribute = attributesItr.next();
            resourceProps.put(attribute.getKey(), attribute.getValue());
        }

        ModifiableValueMapDecorator valueMap = new ModifiableValueMapDecorator(resourceProps);
        ResourceMetadata resourceMetadata = new ResourceMetadata();
        resourceMetadata.setResolutionPath(path + '/' + resourceProps.get("child_id"));
        resourceMetadata.put("table", dbtable.getTableName());

        children.add(new DynamoDBResource(resolver, resourceMetadata, valueMap, resourceType));
    }

    return children;
}

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From source file:com.github.sdmcraft.slingdynamo.impl.DynamoDBResourceProvider.java

License:Open Source License

/**
 * Item to map./*w  w  w. ja  v a2 s .  com*/
 *
 * @param item the item
 * @return the map
 */
private Map<String, Object> itemToMap(Item item) {
    Map<String, Object> resourceProps = new HashMap<String, Object>();
    Iterable<Entry<String, Object>> attributes = item.attributes();
    Iterator<Entry<String, Object>> attributesItr = attributes.iterator();

    while (attributesItr.hasNext()) {
        Entry<String, Object> attribute = attributesItr.next();
        resourceProps.put(attribute.getKey(), attribute.getValue());
    }

    return resourceProps;
}

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From source file:io.fineo.drill.exec.store.dynamo.physical.DynamoRecordReader.java

License:Apache License

@Override
public int next() {
    Stopwatch watch = Stopwatch.createStarted();
    topLevelState.reset();//  w w  w .  j av  a2 s  .  com

    int count = 0;
    Page<Item, ?> page;
    while (resultIter.hasNext()) {
        page = resultIter.next();
        for (Item item : page) {
            int rowCount = count++;
            for (Map.Entry<String, Object> attribute : item.attributes()) {
                String name = attribute.getKey();
                Object value = attribute.getValue();
                SchemaPath column = getSchemaPath(name);
                topLevelState.setColumn(column);
                handleTopField(rowCount, name, value, topLevelState);
            }
        }
    }

    topLevelState.setRowCount(count);
    LOG.debug("Took {} ms to get {} records", watch.elapsed(TimeUnit.MILLISECONDS), count);
    return count;
}

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From source file:jp.classmethod.aws.dynamodb.DynamoDbInternalUtils.java

License:Open Source License

/**
 * Copied from DynamoDB Document SDK InternalUtils.java
 *
 * Converts an <code>Item</code> into the low-level representation;
 * or null if the input is null./*www .  j a  v  a2s  .c o m*/
 */
public static Map<String, AttributeValue> toAttributeValues(Item item) {
    if (item == null) {
        return null;
    }
    // row with multiple attributes
    Map<String, AttributeValue> result = new LinkedHashMap<String, AttributeValue>();
    for (Map.Entry<String, Object> entry : item.attributes()) {
        result.put(entry.getKey(), toAttributeValue(entry.getValue()));
    }
    return result;
}

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