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

Package com.amazonaws.services.dynamodb.model

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

com.amazonaws.services.dynamodb.model.ScanRequest
Container for the parameters to the {@link com.amazonaws.services.dynamodb.AmazonDynamoDB#scan(ScanRequest) Scan operation}.
Retrieves one or more items and its attributes by performing a full scan of a table.

Provide a ScanFilter to get more specific results.
@see com.amazonaws.services.dynamodb.AmazonDynamoDB#scan(ScanRequest)

     *         item data.
     */
    public int count(Class<?> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        ScanRequest scanRequest = createScanRequestFromExpression(clazz, scanExpression, config);
        scanRequest.setCount(true);


        // Count scans can also be truncated for large datasets
        int count = 0;
        ScanResult scanResult = null;
        do {
            scanResult = db.scan(applyUserAgent(scanRequest));
            count += scanResult.getCount();
            scanRequest.setExclusiveStartKey(scanResult.getLastEvaluatedKey());
        } while (scanResult.getLastEvaluatedKey() != null);


        return count;
    }

View Full Code Here

            config = new DynamoDBMapperConfig(this.config, config);
        return config;
    }


    private ScanRequest createScanRequestFromExpression(Class<?> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        ScanRequest scanRequest = new ScanRequest();
        scanRequest.setTableName(getTableName(clazz, config));
        scanRequest.setScanFilter(scanExpression.getScanFilter());
        scanRequest.setLimit(scanExpression.getLimit());
        scanRequest.setExclusiveStartKey(scanExpression.getExclusiveStartKey());


        return scanRequest;
    }

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     * @see PaginatedScanList
     */
    public <T> PaginatedScanList<T> scan(Class<T> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        ScanRequest scanRequest = createScanRequestFromExpression(clazz, scanExpression, config);


        ScanResult scanResult = db.scan(applyUserAgent(scanRequest));
        return new PaginatedScanList<T>(this, clazz, db, scanRequest, scanResult);
    }

View Full Code Here

     *         item data.
     */
    public int count(Class<?> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        ScanRequest scanRequest = createScanRequestFromExpression(clazz, scanExpression, config);
        scanRequest.setCount(true);


        // Count scans can also be truncated for large datasets
        int count = 0;
        ScanResult scanResult = null;
        do {
            scanResult = db.scan(applyUserAgent(scanRequest));
            count += scanResult.getCount();
            scanRequest.setExclusiveStartKey(scanResult.getLastEvaluatedKey());
        } while (scanResult.getLastEvaluatedKey() != null);


        return count;
    }

View Full Code Here

            config = new DynamoDBMapperConfig(this.config, config);
        return config;
    }


    private ScanRequest createScanRequestFromExpression(Class<?> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        ScanRequest scanRequest = new ScanRequest();
        scanRequest.setTableName(getTableName(clazz, config));
        scanRequest.setScanFilter(scanExpression.getScanFilter());


        return scanRequest;
    }

View Full Code Here

            config = new DynamoDBMapperConfig(this.config, config);
        return config;
    }


    private ScanRequest createScanRequestFromExpression(Class<?> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        ScanRequest scanRequest = new ScanRequest();
        scanRequest.setTableName(getTableName(clazz, config));
        scanRequest.setScanFilter(scanExpression.getScanFilter());
        scanRequest.setLimit(scanExpression.getLimit());
        scanRequest.setExclusiveStartKey(scanExpression.getExclusiveStartKey());


        return scanRequest;
    }

View Full Code Here

     * @see PaginatedScanList
     */
    public <T> PaginatedScanList<T> scan(Class<T> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        ScanRequest scanRequest = createScanRequestFromExpression(clazz, scanExpression, config);


        ScanResult scanResult = db.scan(applyUserAgent(scanRequest));
        return new PaginatedScanList<T>(this, clazz, db, scanRequest, scanResult);
    }

View Full Code Here

     *            default provided at object construction.
     */
    public <T> ScanResultPage<T> scanPage(Class<T> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        ScanRequest scanRequest = createScanRequestFromExpression(clazz, scanExpression, config);


        ScanResult scanResult = db.scan(applyUserAgent(scanRequest));
        ScanResultPage<T> result = new ScanResultPage<T>();
        result.setResults(marshallIntoObjects(clazz, scanResult.getItems()));
        result.setLastEvaluatedKey(scanResult.getLastEvaluatedKey());

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     *         item data.
     */
    public int count(Class<?> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        ScanRequest scanRequest = createScanRequestFromExpression(clazz, scanExpression, config);
        scanRequest.setCount(true);


        // Count scans can also be truncated for large datasets
        int count = 0;
        ScanResult scanResult = null;
        do {
            scanResult = db.scan(applyUserAgent(scanRequest));
            count += scanResult.getCount();
            scanRequest.setExclusiveStartKey(scanResult.getLastEvaluatedKey());
        } while (scanResult.getLastEvaluatedKey() != null);


        return count;
    }

View Full Code Here


    public static ScanRequest MapV2ScanRequestToV1(
            com.amazonaws.services.dynamodbv2.model.ScanRequest v2Request,
            Table table) {


        ScanRequest request =
            new ScanRequest()
                .withTableName(v2Request.getTableName())
                .withAttributesToGet(v2Request.getAttributesToGet())
                .withLimit(v2Request.getLimit())
                .withScanFilter(MapV2ScanFilterToV1(v2Request.getScanFilter()))
                .withExclusiveStartKey(MapV2KeyToV1(v2Request.getExclusiveStartKey(), table))
                ;
        request.setCount("COUNT".equals(v2Request.getSelect()));


        return request;
    }

View Full Code Here

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