Struct ExistsCommandHandler 

pub struct ExistsCommandHandler { /* private fields */ }

ExistsCommandHandler checks whether an environment exists

Purpose: Read-only existence check against the repository

This handler queries the repository to determine if an environment with the given name exists. It never modifies state or makes network calls.

Implementations

impl ExistsCommandHandler

pub fn new(repository: Arc<dyn EnvironmentRepository>) -> Self

Create a new ExistsCommandHandler

pub fn execute( &self, env_name: &EnvironmentName, ) -> Result<ExistsResult, ExistsCommandHandlerError>

Execute the exists command workflow

Checks whether the named environment exists in the repository.

Arguments

• env_name - The name of the environment to check

Returns

• Ok(ExistsResult) - Result indicating whether the environment exists
• Err(ExistsCommandHandlerError) - If the repository check fails

Errors

Returns an error if:

• Repository access fails (file system error, permissions, etc.)