Examples of com.amazonaws.services.dynamodb.model.GetItemRequest

Package com.amazonaws.services.dynamodb.model

Examples of com.amazonaws.services.dynamodb.model.GetItemRequest

com.amazonaws.services.dynamodb.model.GetItemRequest
Container for the parameters to the {@link com.amazonaws.services.dynamodb.AmazonDynamoDB#getItem(GetItemRequest) GetItem operation}.
Retrieves a set of Attributes for an item that matches the primary key.

The GetItem operation provides an eventually-consistent read by default. If eventually-consistent reads are not acceptable for your application, use ConsistentRead . Although this operation might take longer than a standard read, it always returns the last updated value.
@see com.amazonaws.services.dynamodb.AmazonDynamoDB#getItem(GetItemRequest)

                        + DynamoDBRangeKey.class);
            }
            rangeKeyElement = getRangeKeyElement(rangeKey, rangeKeyMethod);
        }


        GetItemResult item = db.getItem(applyUserAgent(new GetItemRequest().withTableName(tableName)
                .withKey(new Key().withHashKeyElement(hashKeyElement).withRangeKeyElement(rangeKeyElement))
                .withConsistentRead(config.getConsistentReads() == ConsistentReads.CONSISTENT)));
        Map<String, AttributeValue> itemAttributes = item.getItem();
        if ( itemAttributes == null ) {
            return null;

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        super(ddbClient, configuration, exchange);
    }


    @Override
    public void execute() {
        GetItemResult result = ddbClient.getItem(new GetItemRequest()
                .withKey(determineKey())
                .withTableName(determineTableName())
                .withAttributesToGet(determineAttributeNames())
                .withConsistentRead(determineConsistentRead()));
        addAttributesToResult(result.getItem());

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                        + DynamoDBRangeKey.class);
            }
            rangeKeyElement = getRangeKeyElement(rangeKey, rangeKeyMethod);
        }


        GetItemResult item = db.getItem(applyUserAgent(new GetItemRequest().withTableName(tableName)
                .withKey(new Key().withHashKeyElement(hashKeyElement).withRangeKeyElement(rangeKeyElement))
                .withConsistentRead(config.getConsistentReads() == ConsistentReads.CONSISTENT)));
        Map<String, AttributeValue> itemAttributes = item.getItem();
        if ( itemAttributes == null ) {
            return null;

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                        + DynamoDBRangeKey.class);
            }
            rangeKeyElement = getRangeKeyElement(rangeKey, rangeKeyMethod);
        }


        GetItemResult item = db.getItem(applyUserAgent(new GetItemRequest().withTableName(tableName)
                .withKey(new Key().withHashKeyElement(hashKeyElement).withRangeKeyElement(rangeKeyElement))
                .withConsistentRead(config.getConsistentReads() == ConsistentReads.CONSISTENT)));
        Map<String, AttributeValue> itemAttributes = item.getItem();
        if ( itemAttributes == null ) {
            return null;

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                        + DynamoDBRangeKey.class);
            }
            rangeKeyElement = getRangeKeyElement(rangeKey, rangeKeyMethod);
        }


        GetItemResult item = db.getItem(applyUserAgent(new GetItemRequest().withTableName(tableName)
                .withKey(new Key().withHashKeyElement(hashKeyElement).withRangeKeyElement(rangeKeyElement))
                .withConsistentRead(config.getConsistentReads() == ConsistentReads.CONSISTENT)));
        Map<String, AttributeValue> itemAttributes = item.getItem();
        if ( itemAttributes == null ) {
            return null;

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                        + DynamoDBRangeKey.class);
            }
            rangeKeyElement = getRangeKeyElement(rangeKey, rangeKeyMethod);
        }


        GetItemResult item = db.getItem(new GetItemRequest().withTableName(tableName)
                .withKey(new Key().withHashKeyElement(hashKeyElement).withRangeKeyElement(rangeKeyElement))
                .withConsistentRead(config.getConsistentReads() == ConsistentReads.CONSISTENT));
        Map<String, AttributeValue> itemAttributes = item.getItem();
        if ( itemAttributes == null ) {
            return null;

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                        + DynamoDBRangeKey.class);
            }
            rangeKeyElement = getRangeKeyElement(rangeKey, rangeKeyMethod);
        }


        GetItemResult item = db.getItem(applyUserAgent(new GetItemRequest().withTableName(tableName)
                .withKey(new Key().withHashKeyElement(hashKeyElement).withRangeKeyElement(rangeKeyElement))
                .withConsistentRead(config.getConsistentReads() == ConsistentReads.CONSISTENT)));
        Map<String, AttributeValue> itemAttributes = item.getItem();
        if ( itemAttributes == null ) {
            return null;

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    public <T> T getObj(Class<T> modelClass, Object id, Object rangeKey)
        throws Exception
    {
        String          modelName = jsoda.getModelName(modelClass);
        String          table = jsoda.getModelTable(modelName);
        GetItemRequest  req = new GetItemRequest(table, makeKey(modelName, id, rangeKey));
        GetItemResult   result = ddbClient.getItem(req);


        if (result.getItem() == null || result.getItem().size() == 0)
            return null;        // not existed.

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    @Override
    public int read(String table, String key, Set<String> fields,
            HashMap<String, ByteIterator> result) {


        logger.debug("readkey: " + key + " from table: " + table);
        GetItemRequest req = new GetItemRequest(table, createPrimaryKey(key));
        req.setAttributesToGet(fields);
        req.setConsistentRead(consistentRead);
        GetItemResult res = null;


        try {
            res = dynamoDB.getItem(req);
        }catch (AmazonServiceException ex) {

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        logger.debug("scan " + recordcount + " records from key: " + startkey + " on table: " + table);
        /*
         * on DynamoDB's scan, startkey is *exclusive* so we need to
         * getItem(startKey) and then use scan for the res
         */
        GetItemRequest greq = new GetItemRequest(table, createPrimaryKey(startkey));
        greq.setAttributesToGet(fields);


        GetItemResult gres = null;


        try {
            gres = dynamoDB.getItem(greq);

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