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

Package com.amazonaws.services.dynamodb.model

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

com.amazonaws.services.dynamodb.model.QueryRequest
Container for the parameters to the {@link com.amazonaws.services.dynamodb.AmazonDynamoDB#query(QueryRequest) Query operation}.
Gets the values of one or more items and its attributes by primary key (composite primary key, only).

Narrow the scope of the query using comparison operators on the RangeKeyValue of the composite key. Use the ScanIndexForward parameter to get results in forward or reverse order by range key.
@see com.amazonaws.services.dynamodb.AmazonDynamoDB#query(QueryRequest)

     *            default provided at object construction.
     */
    public <T> QueryResultPage<T> queryPage(Class<T> clazz, DynamoDBQueryExpression queryExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);


        QueryResult scanResult = db.query(applyUserAgent(queryRequest));
        QueryResultPage<T> result = new QueryResultPage<T>();
        result.setResults(marshallIntoObjects(clazz, scanResult.getItems()));
        result.setLastEvaluatedKey(scanResult.getLastEvaluatedKey());

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


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);
        queryRequest.setCount(true);


        // Count queries can also be truncated for large datasets
        int count = 0;
        QueryResult queryResult = null;
        do {
            queryResult = db.query(applyUserAgent(queryRequest));
            count += queryResult.getCount();
            queryRequest.setExclusiveStartKey(queryResult.getLastEvaluatedKey());
        } while (queryResult.getLastEvaluatedKey() != null);


        return count;
    }

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        return scanRequest;
    }


    private QueryRequest createQueryRequestFromExpression(Class<?> clazz, DynamoDBQueryExpression queryExpression, DynamoDBMapperConfig config) {
        QueryRequest queryRequest = new QueryRequest();
        queryRequest.setConsistentRead(queryExpression.isConsistentRead());
        queryRequest.setTableName(getTableName(clazz, config));
        queryRequest.setHashKeyValue(queryExpression.getHashKeyValue());
        queryRequest.setScanIndexForward(queryExpression.isScanIndexForward());
        queryRequest.setRangeKeyCondition(queryExpression.getRangeKeyCondition());
        queryRequest.setLimit(queryExpression.getLimit());
        queryRequest.setExclusiveStartKey(queryExpression.getExclusiveStartKey());


        return queryRequest;
    }

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     * @see PaginatedQueryList
     */
    public <T> PaginatedQueryList<T> query(Class<T> clazz, DynamoDBQueryExpression queryExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);


        QueryResult queryResult = db.query(applyUserAgent(queryRequest));
        return new PaginatedQueryList<T>(this, clazz, db, queryRequest, queryResult);
    }

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


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);
        queryRequest.setCount(true);


        // Count queries can also be truncated for large datasets
        int count = 0;
        QueryResult queryResult = null;
        do {
            queryResult = db.query(applyUserAgent(queryRequest));
            count += queryResult.getCount();
            queryRequest.setExclusiveStartKey(queryResult.getLastEvaluatedKey());
        } while (queryResult.getLastEvaluatedKey() != null);


        return count;
    }

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        return scanRequest;
    }


    private QueryRequest createQueryRequestFromExpression(Class<?> clazz, DynamoDBQueryExpression queryExpression, DynamoDBMapperConfig config) {
        QueryRequest queryRequest = new QueryRequest();
        queryRequest.setConsistentRead(queryExpression.isConsistentRead());
        queryRequest.setTableName(getTableName(clazz, config));
        queryRequest.setHashKeyValue(queryExpression.getHashKeyValue());
        queryRequest.setScanIndexForward(queryExpression.isScanIndexForward());
        queryRequest.setRangeKeyCondition(queryExpression.getRangeKeyCondition());


        return queryRequest;
    }

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     * @see PaginatedQueryList
     */
    public <T> PaginatedQueryList<T> query(Class<T> clazz, DynamoDBQueryExpression queryExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);


        QueryResult queryResult = db.query(applyUserAgent(queryRequest));
        return new PaginatedQueryList<T>(this, clazz, db, queryRequest, queryResult);
    }

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     *            default provided at object construction.
     */
    public <T> QueryResultPage<T> queryPage(Class<T> clazz, DynamoDBQueryExpression queryExpression, DynamoDBMapperConfig config) {
        config = mergeConfig(config);


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);


        QueryResult scanResult = db.query(applyUserAgent(queryRequest));
        QueryResultPage<T> result = new QueryResultPage<T>();
        result.setResults(marshallIntoObjects(clazz, scanResult.getItems()));
        result.setLastEvaluatedKey(scanResult.getLastEvaluatedKey());

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


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);
        queryRequest.setCount(true);


        // Count queries can also be truncated for large datasets
        int count = 0;
        QueryResult queryResult = null;
        do {
            queryResult = db.query(applyUserAgent(queryRequest));
            count += queryResult.getCount();
            queryRequest.setExclusiveStartKey(queryResult.getLastEvaluatedKey());
        } while (queryResult.getLastEvaluatedKey() != null);


        return count;
    }

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        return scanRequest;
    }


    private QueryRequest createQueryRequestFromExpression(Class<?> clazz, DynamoDBQueryExpression queryExpression, DynamoDBMapperConfig config) {
        QueryRequest queryRequest = new QueryRequest();
        queryRequest.setConsistentRead(queryExpression.isConsistentRead());
        queryRequest.setTableName(getTableName(clazz, config));
        queryRequest.setHashKeyValue(queryExpression.getHashKeyValue());
        queryRequest.setScanIndexForward(queryExpression.isScanIndexForward());
        queryRequest.setRangeKeyCondition(queryExpression.getRangeKeyCondition());
        queryRequest.setLimit(queryExpression.getLimit());
        queryRequest.setExclusiveStartKey(queryExpression.getExclusiveStartKey());


        return queryRequest;
    }

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