Example usage for com.amazonaws.services.simpledb AmazonSimpleDB getAttributes

Introduction

In this page you can find the example usage for com.amazonaws.services.simpledb AmazonSimpleDB getAttributes.

Prototype

GetAttributesResult getAttributes(GetAttributesRequest getAttributesRequest);

Source Link

Document

Returns all of the attributes associated with the specified item.

Usage

From source file:com.aipo.aws.simpledb.SimpleDB.java

License:Open Source License

/**
 * //from   w  w  w .ja v a2  s.  c o  m
 * @param <M>
 * @param client
 * @param rootClass
 * @param domain
 * @param itemName
 * @return
 */
public static <M> M get(AmazonSimpleDB client, Class<M> rootClass, String domain, String itemName) {
    try {
        M model = rootClass.newInstance();
        if (model instanceof ResultItem) {
            GetAttributesResult result = client
                    .getAttributes(new GetAttributesRequest(domain, itemName).withConsistentRead(true));
            ResultItem item = (ResultItem) model;
            item.assign(itemName, result);
        }
        return model;
    } catch (InstantiationException e) {
        //
    } catch (IllegalAccessException e) {
        //
    }

    return null;
}

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From source file:com.aipo.aws.simpledb.SimpleDB.java

License:Open Source License

private static Integer counterJob(String domain) {
    AmazonSimpleDB client = getClient();
    GetAttributesRequest getAttributesRequest = new GetAttributesRequest();
    getAttributesRequest.setDomainName(DEFAULT_COUNTER_DOMAIN);
    getAttributesRequest.setItemName(domain);
    getAttributesRequest.setConsistentRead(true);
    Integer count = null;/*w  w  w  .  java 2 s.com*/
    try {
        GetAttributesResult attributes = client.getAttributes(getAttributesRequest);
        List<Attribute> list = attributes.getAttributes();
        for (Attribute item : list) {
            if ("c".equals(item.getName())) {
                try {
                    count = Integer.valueOf(item.getValue());
                } catch (Throwable ignore) {

                }
            }
        }
    } catch (Throwable t) {
        t.printStackTrace();
    }

    if (count == null) {
        CreateDomainRequest createDomainRequest = new CreateDomainRequest(DEFAULT_COUNTER_DOMAIN);
        client.createDomain(createDomainRequest);
        count = 0;
    }

    int next = count + 1;
    PutAttributesRequest putAttributesRequest = new PutAttributesRequest();
    putAttributesRequest.setDomainName(DEFAULT_COUNTER_DOMAIN);
    putAttributesRequest.setItemName(domain);
    List<ReplaceableAttribute> attr = new ArrayList<ReplaceableAttribute>();
    attr.add(new ReplaceableAttribute("c", String.valueOf(next), true));
    putAttributesRequest.setAttributes(attr);
    UpdateCondition updateCondition = new UpdateCondition();
    if (next == 1) {
        updateCondition.setExists(false);
        updateCondition.setName("c");
    } else {
        updateCondition.setExists(true);
        updateCondition.setName("c");
        updateCondition.setValue(String.valueOf(count));
    }
    putAttributesRequest.setExpected(updateCondition);

    client.putAttributes(putAttributesRequest);

    return next;
}

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From source file:squash.booking.lambdas.core.OptimisticPersister.java

License:Apache License

@Override
public ImmutablePair<Optional<Integer>, Set<Attribute>> get(String itemName) {

    if (!initialised) {
        throw new IllegalStateException("The optimistic persister has not been initialised");
    }/*from   w w w  .j av  a2s .co  m*/

    logger.log("About to get all active attributes from simpledb item: " + itemName);

    AmazonSimpleDB client = getSimpleDBClient();

    // Do a consistent read - to ensure we get correct version number
    GetAttributesRequest simpleDBRequest = new GetAttributesRequest(simpleDbDomainName, itemName);
    logger.log("Using simpleDB domain: " + simpleDbDomainName);

    simpleDBRequest.setConsistentRead(true);
    GetAttributesResult result = client.getAttributes(simpleDBRequest);
    List<Attribute> attributes = result.getAttributes();

    // Get the version number and other attributes.
    Optional<Integer> version = Optional.empty();
    Set<Attribute> nonVersionAttributes = new HashSet<>();
    if (attributes.size() > 0) {
        // If we have any attributes, we'll always have a version number
        Attribute versionNumberAttribute = attributes.stream()
                .filter(attribute -> attribute.getName().equals(versionAttributeName)).findFirst().get();
        version = Optional.of(Integer.parseInt(versionNumberAttribute.getValue()));
        logger.log("Retrieved version number: " + versionNumberAttribute.getValue());
        attributes.remove(versionNumberAttribute);

        // Add all active attributes (i.e. those not pending deletion)
        nonVersionAttributes.addAll(attributes.stream()
                .filter(attribute -> !attribute.getValue().startsWith("Inactive")).collect(Collectors.toSet()));
    }
    logger.log("Got all attributes from simpledb");

    return new ImmutablePair<>(version, nonVersionAttributes);
}

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