Examples of com.amazonaws.services.dynamodbv2.model.WriteRequest

Package com.amazonaws.services.dynamodbv2.model

Examples of com.amazonaws.services.dynamodbv2.model.WriteRequest

com.amazonaws.services.dynamodbv2.model.WriteRequest

Represents an operation to perform - either DeleteItem or PutItem . You can only specify one of these operations, not both, in a single WriteRequest . If you do need to perform both of these operations, you will need to specify two separate WriteRequest objects.

    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);
    }

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    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());


        return result;
    }

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                            }
                        }
                    }
                    if ( doUpdateItem ) {
                        /* Send an updateItem request. */
                        db.updateItem(applyUserAgent(new UpdateItemRequest()
                                .withTableName(getTableName())
                                .withKey(getKeyAttributeValues())
                                .withAttributeUpdates(
                                        transformAttributeUpdates(this.clazz,
                                                getKeyAttributeValues(), getAttributeValueUpdates()))

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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();


            String tableName = getTableName(clazz, config);


            Map<String, AttributeValue> key = getKey(toDelete);


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


            requestItems.get(tableName).add(
                    new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(key)));
        }


        // Break into chunks of 25 items and make service requests to DynamoDB
        while ( !requestItems.isEmpty() ) {
            HashMap<String, List<WriteRequest>> batch = new HashMap<String, List<WriteRequest>>();
            int i = 0;
            Iterator<Entry<String, List<WriteRequest>>> tableIter = requestItems.entrySet().iterator();
            while ( tableIter.hasNext() && i < 25 ) {
                Entry<String, List<WriteRequest>> tableRequest = tableIter.next();
                batch.put(tableRequest.getKey(), new LinkedList<WriteRequest>());
                Iterator<WriteRequest> writeRequestIter = tableRequest.getValue().iterator();
                while ( writeRequestIter.hasNext() && i++ < 25 ) {
                    WriteRequest writeRequest = writeRequestIter.next();
                    batch.get(tableRequest.getKey()).add(writeRequest);
                    writeRequestIter.remove();
                }


                // If we've processed all the write requests for this table,

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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();


            String tableName = getTableName(clazz, config);


            Map<String, AttributeValue> key = getKey(toDelete);


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


            requestItems.get(tableName).add(
                    new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(key)));
        }


        // Break into chunks of 25 items and make service requests to DynamoDB
        while ( !requestItems.isEmpty() ) {
            HashMap<String, List<WriteRequest>> batch = new HashMap<String, List<WriteRequest>>();
            int i = 0;
            Iterator<Entry<String, List<WriteRequest>>> tableIter = requestItems.entrySet().iterator();
            while ( tableIter.hasNext() && i < 25 ) {
                Entry<String, List<WriteRequest>> tableRequest = tableIter.next();
                batch.put(tableRequest.getKey(), new LinkedList<WriteRequest>());
                Iterator<WriteRequest> writeRequestIter = tableRequest.getValue().iterator();
                while ( writeRequestIter.hasNext() && i++ < 25 ) {
                    WriteRequest writeRequest = writeRequestIter.next();
                    batch.get(tableRequest.getKey()).add(writeRequest);
                    writeRequestIter.remove();
                }


                // If we've processed all the write requests for this table,

View Full Code Here


            AttributeTransformer.Parameters<?> parameters =
                toParameters(attributeValues, clazz, config);


            requestItems.get(tableName).add(
                new WriteRequest().withPutRequest(
                    new PutRequest().withItem(
                        transformAttributes(parameters))));
        }


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


            String tableName = getTableName(clazz, config);


            Map<String, AttributeValue> key = getKey(toDelete);


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


            requestItems.get(tableName).add(
                    new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(key)));
        }


        // Break into chunks of 25 items and make service requests to DynamoDB
        while ( !requestItems.isEmpty() ) {
            HashMap<String, List<WriteRequest>> batch = new HashMap<String, List<WriteRequest>>();
            int i = 0;
            Iterator<Entry<String, List<WriteRequest>>> tableIter = requestItems.entrySet().iterator();
            while ( tableIter.hasNext() && i < 25 ) {
                Entry<String, List<WriteRequest>> tableRequest = tableIter.next();
                batch.put(tableRequest.getKey(), new LinkedList<WriteRequest>());
                Iterator<WriteRequest> writeRequestIter = tableRequest.getValue().iterator();
                while ( writeRequestIter.hasNext() && i++ < 25 ) {
                    WriteRequest writeRequest = writeRequestIter.next();
                    batch.get(tableRequest.getKey()).add(writeRequest);
                    writeRequestIter.remove();
                }


                // If we've processed all the write requests for this table,

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            AttributeTransformer.Parameters<?> parameters =
                toParameters(attributeValues, clazz, config);


            requestItems.get(tableName).add(
                new WriteRequest().withPutRequest(
                    new PutRequest().withItem(
                        transformAttributes(parameters))));
        }


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


            String tableName = getTableName(clazz, config);


            Map<String, AttributeValue> key = getKey(converter, toDelete);


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


            requestItems.get(tableName).add(
                    new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(key)));
        }


        // Break into chunks of 25 items and make service requests to DynamoDB
        while ( !requestItems.isEmpty() ) {
            HashMap<String, List<WriteRequest>> batch = new HashMap<String, List<WriteRequest>>();
            int i = 0;
            Iterator<Entry<String, List<WriteRequest>>> tableIter = requestItems.entrySet().iterator();
            while ( tableIter.hasNext() && i < 25 ) {
                Entry<String, List<WriteRequest>> tableRequest = tableIter.next();
                batch.put(tableRequest.getKey(), new LinkedList<WriteRequest>());
                Iterator<WriteRequest> writeRequestIter = tableRequest.getValue().iterator();
                while ( writeRequestIter.hasNext() && i++ < 25 ) {
                    WriteRequest writeRequest = writeRequestIter.next();
                    batch.get(tableRequest.getKey()).add(writeRequest);
                    writeRequestIter.remove();
                }


                // If we've processed all the write requests for this table,

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        List<WriteRequest> rList = new ArrayList<WriteRequest>();
        List<Map<String, AttributeValue>> resultList;
        // Amazon DynamoDB only allows one operation per item in a bulk insertion (no duplicate items)
        Set<Map<String, AttributeValue>> uniqueItems = uniqueItems(buffer.getRecords());
        for (Map<String, AttributeValue> item : uniqueItems) {
            WriteRequest wr = new WriteRequest().withPutRequest(new PutRequest().withItem(item));
            // add to the map
            requestMap.put(wr, item);
            // add to the list of requests
            rList.add(wr);
            // Max of sixteen not to exceed maximum request size

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            AttributeTransformer.Parameters<?> parameters =
                toParameters(attributeValues, clazz, config);
            
            requestItems.get(tableName).add(
                new WriteRequest().withPutRequest(
                    new PutRequest().withItem(
                        transformAttributes(parameters))));
        }


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


            String tableName = getTableName(clazz, config);


            Map<String, AttributeValue> key = getKey(toDelete);


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


            requestItems.get(tableName).add(
                    new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(key)));
        }


        // Break into chunks of 25 items and make service requests to DynamoDB
        while ( !requestItems.isEmpty() ) {
            HashMap<String, List<WriteRequest>> batch = new HashMap<String, List<WriteRequest>>();
            int i = 0;
            Iterator<Entry<String, List<WriteRequest>>> tableIter = requestItems.entrySet().iterator();
            while ( tableIter.hasNext() && i < 25 ) {
                Entry<String, List<WriteRequest>> tableRequest = tableIter.next();
                batch.put(tableRequest.getKey(), new LinkedList<WriteRequest>());
                Iterator<WriteRequest> writeRequestIter = tableRequest.getValue().iterator();
                while ( writeRequestIter.hasNext() && i++ < 25 ) {
                    WriteRequest writeRequest = writeRequestIter.next();
                    batch.get(tableRequest.getKey()).add(writeRequest);
                    writeRequestIter.remove();
                }


                // If we've processed all the write requests for this table,

View Full Code Here

            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();


            String tableName = getTableName(clazz, config);


            Map<String, AttributeValue> key = getKey(toDelete);


            if ( !requestItems.containsKey(tableName) ) {
                requestItems.put(tableName, new LinkedList<WriteRequest>());
            }
            
            requestItems.get(tableName).add(
                    new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(key)));
        }


        // Break into chunks of 25 items and make service requests to DynamoDB
        while ( !requestItems.isEmpty() ) {
            HashMap<String, List<WriteRequest>> batch = new HashMap<String, List<WriteRequest>>();
            int i = 0;
            Iterator<Entry<String, List<WriteRequest>>> tableIter = requestItems.entrySet().iterator();
            while ( tableIter.hasNext() && i < 25 ) {
                Entry<String, List<WriteRequest>> tableRequest = tableIter.next();
                batch.put(tableRequest.getKey(), new LinkedList<WriteRequest>());
                Iterator<WriteRequest> writeRequestIter = tableRequest.getValue().iterator();
                while ( writeRequestIter.hasNext() && i++ < 25 ) {
                    WriteRequest writeRequest = writeRequestIter.next();
                    batch.get(tableRequest.getKey()).add(writeRequest);
                    writeRequestIter.remove();
                }


                // If we've processed all the write requests for this table,

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