Add more helpers to DynamoDB Expression #4764
Description
Describe the feature
DynamoDB Expression currently only supports a simple use case of two expressions and only offers an instance method for and but not or. I propose adding both instance and static methods for both and and or operations that take in a varargs of Expressions to join together.
Use Case
When writing a complex query with multiple distinct Expressions this will make it easier to express the relational logic between the queries. This make it easier to ensure that the Expression is capturing the intended logic of the author.
expression1.and(expression2.or(expression3))
Expression.and(expression1, expression2, expression3)
Proposed Solution
I would propose adding these as net new implementation to avoid breaking any clients relying on specifics of existing implementations. The instance methods would be accept a varargs input that would be converted to a list including the target then passed to the static methods. The static method would be wrappers around a generic varargs join that can combine any number of expressions together. It would leverage the existing join logic to iterate through all of the expression and merge them into one Expression.
Other Information
No response
Acknowledgements
- I may be able to implement this feature request
- This feature might incur a breaking change
AWS Java SDK version used
2.21.42
JDK version used
openjdk version "1.8.0_392"
Operating System and version
macOS 13.6.1