Besides my more elaborate, personalized other answer, I feel the following observation deserves a separate answer.

There are indications that you might be following the Poltergeists anti-pattern.

Poltergeists are classes with very limited roles and effective life cycles. They often start processes for other objects. The refactored solution includes a reallocation of responsibilities to longer-lived objects that eliminate the Poltergeists.

Symptoms And Consequences

• Redundant navigation paths.
• Transient associations.
• Stateless classes.
• Temporary, short-duration objects and classes.
• Single-operation classes that exist only to “seed” or “invoke” other classes through temporary associations.
• Classes with “control-like” operation names such as start_process_alpha.

Refactored Solution

Ghostbusters solve Poltergeists by removing them from the class hierarchy altogether. After their removal, however, the functionality that was “provided” by the poltergeist must be replaced. This is easy with a simple adjustment to correct the architecture.

Besides my more elaborate, personalized other answer, I feel the following observation deserves a separate answer.

There are indications that you might be following the Poltergeists anti-pattern.

Poltergeists are classes with very limited roles and effective life cycles. They often start processes for other objects. The refactored solution includes a reallocation of responsibilities to longer-lived objects that eliminate the Poltergeists.

Symptoms And Consequences

• Redundant navigation paths.
• Transient associations.
• Stateless classes.
• Temporary, short-duration objects and classes.
• Single-operation classes that exist only to “seed” or “invoke” other classes through temporary associations.
• Classes with “control-like” operation names such as start_process_alpha.

Refactored Solution

Ghostbusters solve Poltergeists by removing them from the class hierarchy altogether. After their removal, however, the functionality that was “provided” by the poltergeist must be replaced. This is easy with a simple adjustment to correct the architecture.