Fetch Items from NoSQL TableAdmin Scope

Using the fetchItem() SDK method, you can fetch the required items from a NoSQL table. The items can be referred using their Primary Keys. For example, you can use just the partition key or a combination of the partition key and sort key to fetch the item. Optionally, you can filter the attributes to be fetched by specifying the required attributes.

The following example code snippet details the following logic:

• The required item is being identified using its partition key: fruit whose value is “apple”.
• Specific attributes such as properties and taste are filtered to be fetched using required_attributes.
• Implements consistent_read to indicate if the read operation must be done using the master or a slave cluster.
  • If the value is set as true, it is queried from the master.
  • If the value is set as false, it is queried from the slave.

//Fetch properties of a NoSQLItem identified with the partition key value "apple"
const fetchedItem = await table.fetchItem({
// Define the partition key and value of the item to be fetched
keys: [new NoSQLItem().addString('fruit', 'apple')],
// Set consistent_read to true to query from master. If set to false, it is queried from slave.
consistent_read: true,
// Specify the attributes to be fetched
required_attributes: [['properties', 'taste']]
});