Examples of com.amazonaws.services.dynamodbv2.document.Table

Package com.amazonaws.services.dynamodbv2.document

Examples of com.amazonaws.services.dynamodbv2.document.Table

com.amazonaws.services.dynamodbv2.model.QueryRequest
A DynamoDB table. Instance of this class is typically obtained via {@link DynamoDB#getTable(String)}.

                }


                @Override
                protected void executeLowLevelRequest(boolean onlyKeyAttributeSpecified) {
                    /* Send a putItem request */
                    db.putItem(applyUserAgent(new PutItemRequest().withTableName(getTableName())
                            .withItem(transformAttributes(this.clazz, convertToItem(getAttributeValueUpdates())))
                            .withExpected(getExpectedAttributeValues())));
                }
            };
        } else {

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            Object rangeGetterResult = safeInvoke(rangeKeyGetter, object);
            attributes.put(rangeKeyAttributeName, getSimpleAttributeValue(rangeKeyGetter, rangeGetterResult));
            expectedValues.put(rangeKeyAttributeName, new ExpectedAttributeValue().withExists(false));
        }
        attributes = transformAttributes(clazz, attributes);
        db.putItem(applyUserAgent(new PutItemRequest().withTableName(tableName).withItem(attributes)
                .withExpected(expectedValues)));
    }

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                }


                @Override
                protected void executeLowLevelRequest(boolean onlyKeyAttributeSpecified) {
                    /* Send a putItem request */
                    db.putItem(applyUserAgent(new PutItemRequest().withTableName(getTableName())
                            .withItem(transformAttributes(this.clazz, convertToItem(getAttributeValueUpdates())))
                            .withExpected(getExpectedAttributeValues())));
                }
            };
        } else {

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            Object rangeGetterResult = safeInvoke(rangeKeyGetter, object);
            attributes.put(rangeKeyAttributeName, getSimpleAttributeValue(rangeKeyGetter, rangeGetterResult));
            expectedValues.put(rangeKeyAttributeName, new ExpectedAttributeValue().withExists(false));
        }
        attributes = transformAttributes(clazz, attributes);
        db.putItem(applyUserAgent(new PutItemRequest().withTableName(tableName).withItem(attributes)
                .withExpected(expectedValues)));
    }

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            if ( !requestItems.containsKey(tableName) ) {
                requestItems.put(tableName, new LinkedList<WriteRequest>());
            }


            requestItems.get(tableName).add(
                    new WriteRequest().withPutRequest(new PutRequest().withItem(transformAttributes(clazz, attributeValues))));
        }


        for ( Object toDelete : objectsToDelete ) {
            Class<?> clazz = toDelete.getClass();

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            if ( !requestItems.containsKey(tableName) ) {
                requestItems.put(tableName, new LinkedList<WriteRequest>());
            }


            requestItems.get(tableName).add(
                    new WriteRequest().withPutRequest(new PutRequest().withItem(transformAttributes(clazz, attributeValues))));
        }


        for ( Object toDelete : objectsToDelete ) {
            Class<?> clazz = toDelete.getClass();

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     * @see PaginationLoadingStrategy
     */
    public <T> PaginatedQueryList<T> query(Class<T> clazz, DynamoDBQueryExpression<T> 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, config.getPaginationLoadingStrategy());
    }

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


        QueryRequest queryRequest = createQueryRequestFromExpression(clazz, queryExpression, config);
        queryRequest.setSelect(Select.COUNT);


        // 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 parallelScanRequests;
    }


    private <T> QueryRequest  createQueryRequestFromExpression(Class<T> clazz, DynamoDBQueryExpression<T> queryExpression, DynamoDBMapperConfig config) {
        QueryRequest queryRequest = new QueryRequest();
        queryRequest.setConsistentRead(queryExpression.isConsistentRead());
        queryRequest.setTableName(getTableName(clazz, config));
        queryRequest.setIndexName(queryExpression.getIndexName());


        Map<String, Condition> keyConditions = getHashKeyEqualsConditions(queryExpression.getHashKeyValues());


        Map<String, Condition> rangeKeyConditions = queryExpression.getRangeKeyConditions();
        if (null != rangeKeyConditions) {
          processRangeKeyConditions(clazz, queryRequest, rangeKeyConditions);
          keyConditions.putAll(rangeKeyConditions);
        }


        queryRequest.setKeyConditions(keyConditions);
        queryRequest.setScanIndexForward(queryExpression.isScanIndexForward());
        queryRequest.setLimit(queryExpression.getLimit());
        queryRequest.setExclusiveStartKey(queryExpression.getExclusiveStartKey());


        return queryRequest;
    }

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