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

Package com.amazonaws.services.dynamodbv2.model

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

com.amazonaws.services.dynamodbv2.model.UpdateItemRequest
Container for the parameters to the {@link com.amazonaws.services.dynamodbv2.AmazonDynamoDB#updateItem(UpdateItemRequest) UpdateItem operation}.
Edits an existing item's attributes, or inserts a new item if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values).

In addition to updating an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
@see com.amazonaws.services.dynamodbv2.AmazonDynamoDB#updateItem(UpdateItemRequest)

        ScanRequest scanRequest = createScanRequestFromExpression(clazz, scanExpression, config);
        scanRequest.setSelect(Select.COUNT);


        // 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;
    }

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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 ( 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 ( doUpdateItem ) {
                        /* Send an updateItem request. */
                        UpdateItemRequest req = new UpdateItemRequest()
                            .withTableName(getTableName())
                            .withKey(getKeyAttributeValues())
                            .withAttributeUpdates(
                                transformAttributeUpdates(this.clazz,
                                    getKeyAttributeValues(),

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         * ALL_NEW, which means the service should return all of the attributes
         * of the new version of the item after the update. The handler will use
         * the returned attributes to detect silent failure on the server-side.
         */
        protected UpdateItemResult doUpdateItem() {
            UpdateItemRequest req = new UpdateItemRequest()
                    .withTableName(getTableName())
                    .withKey(getKeyAttributeValues())
                    .withAttributeUpdates(
                            transformAttributeUpdates(
                                    this.clazz,

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    private String conditionExpression;
    private Map<String, String> nameMap;
    private Map<String, Object> valueMap;


    public UpdateItemSpec() {
        super(new UpdateItemRequest());
    }

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

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        if ( config.getSaveBehavior() == SaveBehavior.CLOBBER || forcePut ) {
            db.putItem(applyUserAgent(new PutItemRequest().withTableName(tableName)
                    .withItem(transformAttributes(clazz, convertToItem(updateValues)))
                    .withExpected(expectedValues)));
        } else {
            db.updateItem(applyUserAgent(new UpdateItemRequest().withTableName(tableName).withKey(key)
                    .withAttributeUpdates(transformAttributeUpdates(clazz, updateValues)).withExpected(expectedValues)));
        }


        /*
         * Finally, after the service call has succeeded, update the in-memory

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        if (LOG.isDebugEnabled()) {
            LOG.debug("Renewing lease with key " + lease.getLeaseKey());
        }


        UpdateItemRequest request = new UpdateItemRequest();
        request.setTableName(table);
        request.setKey(serializer.getDynamoHashKey(lease));
        request.setExpected(serializer.getDynamoLeaseCounterExpectation(lease));
        request.setAttributeUpdates(serializer.getDynamoLeaseCounterUpdate(lease));


        try {
            dynamoDBClient.updateItem(request);
        } catch (ConditionalCheckFailedException e) {
            if (LOG.isDebugEnabled()) {

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                    lease.getLeaseKey(),
                    lease.getLeaseOwner() == null ? "nobody" : lease.getLeaseOwner(),
                    owner));
        }


        UpdateItemRequest request = new UpdateItemRequest();
        request.setTableName(table);
        request.setKey(serializer.getDynamoHashKey(lease));
        request.setExpected(serializer.getDynamoLeaseCounterExpectation(lease));


        Map<String, AttributeValueUpdate> updates = serializer.getDynamoLeaseCounterUpdate(lease);
        updates.putAll(serializer.getDynamoTakeLeaseUpdate(lease, owner));
        request.setAttributeUpdates(updates);


        try {
            dynamoDBClient.updateItem(request);
        } catch (ConditionalCheckFailedException e) {
            if (LOG.isDebugEnabled()) {

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