Crate dynamodb_expression

A crate to help build DynamoDB condition, filter, key condition, and update expressions in a type-safe way.

Expression is the type to use for a DynamoDB expression. Path represents a DynamoDB item attribute or document path, and has many methods for building various expressions. See the integration tests for querying and updating as a starting place.

An example showing a how to use this crate to perform a query:

use dynamodb_expression::{Expression, num_value, path::Path};

let client = aws_sdk_dynamodb::Client::new(&aws_config::load_from_env().await);

let query_output = Expression::builder()
    .with_filter(
        Path::name("name")
            .attribute_exists()
            .and(Path::name("age").greater_than_or_equal(num_value(2.5))),
    )
    .with_projection(["name", "age"])
    .with_key_condition(Path::name("id").key().equal(num_value(42)))
    .build()
    .query(&client)
    .table_name("your_table")
    .send()
    .await?;

Re-exports

• pub use condition::Comparator;
• pub use expression::Expression;
• pub use path::Path;
• pub use value::binary_set;
• pub use value::binary_value;
• pub use value::bool_value;
• pub use value::null_value;
• pub use value::num_set;
• pub use value::num_value;
• pub use value::ref_value;
• pub use value::string_set;
• pub use value::string_value;
• pub use ::aws_sdk_dynamodb;
• pub use ::num;

Modules

• condition
• expression
• key
• operand
• path
• update
  Types related to DynamoDB update expressions. For more, see Update.
• value