Example usage for com.amazonaws.services.dynamodbv2.model AttributeValue getN

List of usage examples for com.amazonaws.services.dynamodbv2.model AttributeValue getN

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Introduction

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

Prototype


public String getN()

Source Link

Document

An attribute of type Number.

Usage

From source file:com.amazon.janusgraph.diskstorage.dynamodb.DynamoDbDelegate.java

License:Open Source License

/**
 * Helper method that can clone an Attribute Value
 *
 * @param val the AttributeValue to copy
 * @param sourceDestinationMap used to avoid loops by keeping track of references
 * @return a copy of val/*  www  .  j av  a  2  s .  co m*/
 */
public static AttributeValue clone(final AttributeValue val,
        final IdentityHashMap<AttributeValue, AttributeValue> sourceDestinationMap) {
    if (val == null) {
        return null;
    }

    if (sourceDestinationMap.containsKey(val)) {
        return sourceDestinationMap.get(val);
    }

    final AttributeValue clonedVal = new AttributeValue();
    sourceDestinationMap.put(val, clonedVal);
    if (val.getN() != null) {
        clonedVal.setN(val.getN());
    } else if (val.getS() != null) {
        clonedVal.setS(val.getS());
    } else if (val.getB() != null) {
        clonedVal.setB(val.getB());
    } else if (val.getNS() != null) {
        clonedVal.setNS(val.getNS());
    } else if (val.getSS() != null) {
        clonedVal.setSS(val.getSS());
    } else if (val.getBS() != null) {
        clonedVal.setBS(val.getBS());
    } else if (val.getBOOL() != null) {
        clonedVal.setBOOL(val.getBOOL());
    } else if (val.getNULL() != null) {
        clonedVal.setNULL(val.getNULL());
    } else if (val.getL() != null) {
        final List<AttributeValue> list = new ArrayList<>(val.getL().size());
        for (AttributeValue listItemValue : val.getL()) {
            if (!sourceDestinationMap.containsKey(listItemValue)) {
                sourceDestinationMap.put(listItemValue, clone(listItemValue, sourceDestinationMap));
            }
            list.add(sourceDestinationMap.get(listItemValue));
        }
        clonedVal.setL(list);
    } else if (val.getM() != null) {
        final Map<String, AttributeValue> map = new HashMap<>(val.getM().size());
        for (Entry<String, AttributeValue> pair : val.getM().entrySet()) {
            if (!sourceDestinationMap.containsKey(pair.getValue())) {
                sourceDestinationMap.put(pair.getValue(), clone(pair.getValue(), sourceDestinationMap));
            }
            map.put(pair.getKey(), sourceDestinationMap.get(pair.getValue()));
        }
        clonedVal.setM(map);
    }
    return clonedVal;
}

From source file:com.amazon.janusgraph.diskstorage.dynamodb.DynamoDbDelegate.java

License:Open Source License

/**Calculate attribute value size*/
private static int calculateAttributeSizeInBytes(final AttributeValue value) {
    int attrValSize = 0;
    if (value == null) {
        return attrValSize;
    }// ww w .  j  a v  a  2  s .c o m

    if (value.getB() != null) {
        final ByteBuffer b = value.getB();
        attrValSize += b.remaining();
    } else if (value.getS() != null) {
        final String s = value.getS();
        attrValSize += s.getBytes(UTF8).length;
    } else if (value.getN() != null) {
        attrValSize += MAX_NUMBER_OF_BYTES_FOR_NUMBER;
    } else if (value.getBS() != null) {
        final List<ByteBuffer> bs = value.getBS();
        for (ByteBuffer b : bs) {
            if (b != null) {
                attrValSize += b.remaining();
            }
        }
    } else if (value.getSS() != null) {
        final List<String> ss = value.getSS();
        for (String s : ss) {
            if (s != null) {
                attrValSize += s.getBytes(UTF8).length;
            }
        }
    } else if (value.getNS() != null) {
        final List<String> ns = value.getNS();
        for (String n : ns) {
            if (n != null) {
                attrValSize += MAX_NUMBER_OF_BYTES_FOR_NUMBER;
            }
        }
    } else if (value.getBOOL() != null) {
        attrValSize += 1;
    } else if (value.getNULL() != null) {
        attrValSize += 1;
    } else if (value.getM() != null) {
        for (Map.Entry<String, AttributeValue> entry : value.getM().entrySet()) {
            attrValSize += entry.getKey().getBytes(UTF8).length;
            attrValSize += calculateAttributeSizeInBytes(entry.getValue());
            attrValSize += BASE_LOGICAL_SIZE_OF_NESTED_TYPES;
        }
        attrValSize += LOGICAL_SIZE_OF_EMPTY_DOCUMENT;
    } else if (value.getL() != null) {
        final List<AttributeValue> list = value.getL();
        for (Integer i = 0; i < list.size(); i++) {
            attrValSize += calculateAttributeSizeInBytes(list.get(i));
            attrValSize += BASE_LOGICAL_SIZE_OF_NESTED_TYPES;
        }
        attrValSize += LOGICAL_SIZE_OF_EMPTY_DOCUMENT;
    }
    return attrValSize;
}

From source file:com.clicktravel.infrastructure.persistence.aws.dynamodb.AbstractDynamoDbTemplate.java

License:Apache License

@Override
public GeneratedKeyHolder generateKeys(final SequenceKeyGenerator sequenceKeyGenerator) {
    final String sequenceName = sequenceKeyGenerator.sequenceName();
    if (!sequenceConfigurations.contains(sequenceName)) {
        throw new IllegalStateException("Unsupported sequence: " + sequenceName);
    }/*from  w w  w.j  a v a 2 s  .  c  o m*/
    final Map<String, AttributeValue> key = new HashMap<>();
    key.put(SEQUENCE_NAME_ATTRIBUTE, new AttributeValue(sequenceName));
    final AttributeValueUpdate attributeValueUpdate = new AttributeValueUpdate().withAction("ADD")
            .withValue(new AttributeValue().withN(String.valueOf(sequenceKeyGenerator.keyCount())));
    final Map<String, AttributeValueUpdate> attributeUpdates = new HashMap<>();
    attributeUpdates.put(SEQUENCE_CURRENT_VALUE_ATTRIBUTE, attributeValueUpdate);
    final String tableName = databaseSchemaHolder.schemaName() + "-" + SEQUENCE_TABLE_NAME;
    final UpdateItemRequest updateItemRequest = new UpdateItemRequest().withTableName(tableName).withKey(key)
            .withAttributeUpdates(attributeUpdates).withReturnValues("UPDATED_NEW");
    final UpdateItemResult updateItemResult;
    try {
        updateItemResult = amazonDynamoDbClient.updateItem(updateItemRequest);
    } catch (final AmazonServiceException e) {
        throw new PersistenceResourceFailureException(
                "Failure while attempting DynamoDb Update (generate keys)", e);
    }
    final Map<String, AttributeValue> attributes = updateItemResult.getAttributes();
    final AttributeValue currentAttributeValue = attributes.get(SEQUENCE_CURRENT_VALUE_ATTRIBUTE);
    final Long currentValue = Long.valueOf(currentAttributeValue.getN());
    final Collection<Long> keys = new ArrayList<>();
    for (long i = currentValue - sequenceKeyGenerator.keyCount(); i < currentValue; i++) {
        keys.add(i + 1);
    }
    return new GeneratedKeyHolder(keys);
}

From source file:com.github.sdmcraft.slingdynamo.demo.App.java

License:Open Source License

/**
 * Prints the item.//from w  w w. ja  v a  2 s.c o  m
 *
 * @param attributeList the attribute list
 */
private static void printItem(Map<String, AttributeValue> attributeList) {
    for (Map.Entry<String, AttributeValue> item : attributeList.entrySet()) {
        String attributeName = item.getKey();
        AttributeValue value = item.getValue();
        System.out.println(attributeName + " " + ((value.getS() == null) ? "" : ("S=[" + value.getS() + "]"))
                + ((value.getN() == null) ? "" : ("N=[" + value.getN() + "]"))
                + ((value.getB() == null) ? "" : ("B=[" + value.getB() + "]"))
                + ((value.getSS() == null) ? "" : ("SS=[" + value.getSS() + "]"))
                + ((value.getNS() == null) ? "" : ("NS=[" + value.getNS() + "]"))
                + ((value.getBS() == null) ? "" : ("BS=[" + value.getBS() + "] \n")));
    }
}

From source file:com.numenta.taurus.service.TaurusClient.java

License:Open Source License

/**
 * Get list of tweets for the given metric filtered by the given time range returning the
 * results as they become available asynchronously.
 *
 * @param metricName The metric name to retrieve the tweets from
 * @param from       The start time (aggregated) inclusive.
 * @param to         The end time (aggregated) inclusive.
 * @param callback   Callback for asynchronous call. It will be called on every {@link Tweet}
 *///from w  ww . j a  v a  2 s  .com
public void getTweets(String metricName, Date from, Date to, DataCallback<Tweet> callback)
        throws GrokException, IOException {
    if (metricName == null) {
        throw new ObjectNotFoundException("Cannot get tweets without metric name");
    }

    final TaurusDataFactory dataFactory = TaurusApplication.getInstance().getDataFactory();
    final SimpleDateFormat timestampFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.US);
    timestampFormat.setTimeZone(TimeZone.getTimeZone("UTC"));

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

    // uid = modelId
    Condition modelIdCond = new Condition().withComparisonOperator(ComparisonOperator.EQ)
            .withAttributeValueList(new AttributeValue(metricName));
    keyConditions.put("metric_name", modelIdCond);

    Condition timestampCondition;
    if (from != null && to != null) {
        // timestamp >= from and timestamp <=to
        timestampCondition = new Condition().withComparisonOperator(ComparisonOperator.BETWEEN)
                .withAttributeValueList(new AttributeValue().withS(timestampFormat.format(from)),
                        new AttributeValue().withS(timestampFormat.format(to)));
        keyConditions.put("agg_ts", timestampCondition);
    } else if (from != null) {
        // timestamp >= from
        timestampCondition = new Condition().withComparisonOperator(ComparisonOperator.GT)
                .withAttributeValueList(new AttributeValue().withS(timestampFormat.format(from)));
        keyConditions.put("agg_ts", timestampCondition);
    } else if (to != null) {
        // timestamp <= to
        timestampCondition = new Condition().withComparisonOperator(ComparisonOperator.LT)
                .withAttributeValueList(new AttributeValue().withS(timestampFormat.format(to)));
        keyConditions.put("agg_ts", timestampCondition);
    }

    // Prepare query request
    QueryRequest query = new QueryRequest().withTableName(TWEETS_TABLE)
            .withAttributesToGet("tweet_uid", "userid", "text", "username", "agg_ts", "created_at",
                    "retweet_count")
            .withKeyConditions(keyConditions).withScanIndexForward(false)
            .withIndexName("taurus.metric_data-metric_name_index");

    QueryResult result;
    String tweetId;
    String userId;
    String userName;
    String text;
    Date created;
    Date aggregated;
    AttributeValue retweet;
    int retweetCount;
    Map<String, AttributeValue> lastKey;
    try {
        do {
            // Get results
            result = _awsClient.query(query);
            for (Map<String, AttributeValue> item : result.getItems()) {
                tweetId = item.get("tweet_uid").getS();
                userId = item.get("userid").getS();
                text = item.get("text").getS();
                userName = item.get("username").getS();
                aggregated = DataUtils.parseGrokDate(item.get("agg_ts").getS());
                created = DataUtils.parseGrokDate(item.get("created_at").getS());

                // "retweet_count" is optional
                retweet = item.get("retweet_count");
                if (retweet != null && retweet.getN() != null) {
                    retweetCount = Integer.parseInt(retweet.getN());
                } else {
                    retweetCount = 0;
                }
                if (!callback.onData(dataFactory.createTweet(tweetId, aggregated, created, userId, userName,
                        text, retweetCount))) {
                    // Canceled by the user
                    break;
                }
            }
            // Make sure to get all pages
            lastKey = result.getLastEvaluatedKey();
            query.setExclusiveStartKey(lastKey);
        } while (lastKey != null);
    } catch (AmazonClientException e) {
        // Wraps Amazon's unchecked exception as IOException
        throw new IOException(e);
    }
}

From source file:com.rapid7.diskstorage.dynamodb.DynamoDBDelegate.java

License:Open Source License

/**
 * Helper method that can clone an Attribute Value
 *
 * @param val the AttributeValue to copy
 * @param sourceDestinationMap used to avoid loops by keeping track of references
 * @return a copy of val/*from  w ww  . j  a va2s.c  o  m*/
 */
public static AttributeValue clone(AttributeValue val,
        IdentityHashMap<AttributeValue, AttributeValue> sourceDestinationMap) {
    if (val == null) {
        return null;
    }

    if (sourceDestinationMap.containsKey(val)) {
        return sourceDestinationMap.get(val);
    }

    AttributeValue clonedVal = new AttributeValue();
    sourceDestinationMap.put(val, clonedVal);
    if (val.getN() != null) {
        clonedVal.setN(val.getN());
    } else if (val.getS() != null) {
        clonedVal.setS(val.getS());
    } else if (val.getB() != null) {
        clonedVal.setB(val.getB());
    } else if (val.getNS() != null) {
        clonedVal.setNS(val.getNS());
    } else if (val.getSS() != null) {
        clonedVal.setSS(val.getSS());
    } else if (val.getBS() != null) {
        clonedVal.setBS(val.getBS());
    } else if (val.getBOOL() != null) {
        clonedVal.setBOOL(val.getBOOL());
    } else if (val.getNULL() != null) {
        clonedVal.setNULL(val.getNULL());
    } else if (val.getL() != null) {
        List<AttributeValue> list = new ArrayList<>(val.getL().size());
        for (AttributeValue listItemValue : val.getL()) {
            if (!sourceDestinationMap.containsKey(listItemValue)) {
                sourceDestinationMap.put(listItemValue, clone(listItemValue, sourceDestinationMap));
            }
            list.add(sourceDestinationMap.get(listItemValue));
        }
        clonedVal.setL(list);
    } else if (val.getM() != null) {
        Map<String, AttributeValue> map = new HashMap<>(val.getM().size());
        for (Entry<String, AttributeValue> pair : val.getM().entrySet()) {
            if (!sourceDestinationMap.containsKey(pair.getValue())) {
                sourceDestinationMap.put(pair.getValue(), clone(pair.getValue(), sourceDestinationMap));
            }
            map.put(pair.getKey(), sourceDestinationMap.get(pair.getValue()));
        }
        clonedVal.setM(map);
    }
    return clonedVal;
}

From source file:com.rapid7.diskstorage.dynamodb.DynamoDBDelegate.java

License:Open Source License

/**Calculate attribute value size*/
private static int calculateAttributeSizeInBytes(AttributeValue value) {
    int attrValSize = 0;
    if (value == null) {
        return attrValSize;
    }//from www.j av a2s.  c  o m

    if (value.getB() != null) {
        ByteBuffer b = value.getB();
        attrValSize += b.remaining();
    } else if (value.getS() != null) {
        String s = value.getS();
        attrValSize += s.getBytes(UTF8).length;
    } else if (value.getN() != null) {
        attrValSize += MAX_NUMBER_OF_BYTES_FOR_NUMBER;
    } else if (value.getBS() != null) {
        List<ByteBuffer> bs = value.getBS();
        for (ByteBuffer b : bs) {
            if (b != null) {
                attrValSize += b.remaining();
            }
        }
    } else if (value.getSS() != null) {
        List<String> ss = value.getSS();
        for (String s : ss) {
            if (s != null) {
                attrValSize += s.getBytes(UTF8).length;
            }
        }
    } else if (value.getNS() != null) {
        List<String> ns = value.getNS();
        for (String n : ns) {
            if (n != null) {
                attrValSize += MAX_NUMBER_OF_BYTES_FOR_NUMBER;
            }
        }
    } else if (value.getBOOL() != null) {
        attrValSize += 1;
    } else if (value.getNULL() != null) {
        attrValSize += 1;
    } else if (value.getM() != null) {
        for (Map.Entry<String, AttributeValue> entry : value.getM().entrySet()) {
            attrValSize += entry.getKey().getBytes(UTF8).length;
            attrValSize += calculateAttributeSizeInBytes(entry.getValue());
            attrValSize += BASE_LOGICAL_SIZE_OF_NESTED_TYPES;
        }
        attrValSize += LOGICAL_SIZE_OF_EMPTY_DOCUMENT;
    } else if (value.getL() != null) {
        List<AttributeValue> list = value.getL();
        for (Integer i = 0; i < list.size(); i++) {
            attrValSize += calculateAttributeSizeInBytes(list.get(i));
            attrValSize += BASE_LOGICAL_SIZE_OF_NESTED_TYPES;
        }
        attrValSize += LOGICAL_SIZE_OF_EMPTY_DOCUMENT;
    }
    return attrValSize;
}

From source file:com.tsatsatzu.subwar.game.logic.dynamo.DynamoUtils.java

License:Apache License

/**
 * Gets the int./*from   ww w  . j a v a 2s.c om*/
 *
 * @param data the data
 * @param name the name
 * @param def the def
 * @return the int
 */
public static int getInt(Map<String, AttributeValue> data, String name, int def) {
    AttributeValue val = data.get(name);
    if (val == null)
        return def;
    String snum = val.getN();
    if (snum == null)
        return def;
    try {
        int inum = Integer.parseInt(snum);
        return inum;
    } catch (NumberFormatException e) {
        return def;
    }
}

From source file:com.tsatsatzu.subwar.game.logic.dynamo.DynamoUtils.java

License:Apache License

/**
 * Gets the long.//from   ww  w.j a  v a2s  .  co m
 *
 * @param data the data
 * @param name the name
 * @param def the def
 * @return the long
 */
public static long getLong(Map<String, AttributeValue> data, String name, long def) {
    AttributeValue val = data.get(name);
    if (val == null)
        return def;
    String snum = val.getN();
    if (snum == null)
        return def;
    try {
        long inum = Long.parseLong(snum);
        return inum;
    } catch (NumberFormatException e) {
        return def;
    }
}

From source file:doug.iotdemo.server.web.WebServer.java

License:Open Source License

private void handleFetch(RoutingContext context) {
    ScanRequest scanRequest = new ScanRequest().withTableName(sensorTableName);
    db.scanAsync(scanRequest, new AsyncHandler<ScanRequest, ScanResult>() {
        @Override/*w w w .  j a  va  2 s.com*/
        public void onSuccess(ScanRequest request, ScanResult result) {
            JsonObject states = new JsonObject();
            for (Map<String, AttributeValue> item : result.getItems()) {
                AttributeValue stateValue = item.get("state");
                if (stateValue != null) {
                    JsonObject sensorObj = new JsonObject();
                    sensorObj.put("state", Integer.valueOf(stateValue.getN()));

                    if (item.get("time") != null) {
                        long time = Long.parseLong(item.get("time").getN());
                        long count = Long.parseLong(item.get("count").getN());
                        long thresh = time / count;
                        sensorObj.put("thresh", thresh);
                    }

                    states.put(item.get("sensor").getS(), sensorObj);
                }
            }
            context.response().end(states.encode());
        }

        @Override
        public void onError(Exception exception) {
            StringWriter msg = new StringWriter();
            exception.printStackTrace(new PrintWriter(msg));
            context.response().setStatusCode(500).end(msg.toString());
        }
    });
}