All Superinterfaces:

Runnable

All Known Subinterfaces:

MutableModule

All Known Implementing Classes:

AbstractModule, CommandModule, DefaultMutableModule, DynamicCommand, Inputs, InteractiveCommand, ModuleCommand, OptionsPlugin, ScriptModule
```
public interface Module
extends Runnable
```
A module is an encapsulated piece of functionality with inputs and outputs.
There are several types of modules, including plugins and scripts, as well as workflows, which are directed acyclic graphs consisting of modules whose inputs and outputs are connected.

The Module interface represents a specific instance of a module, while the corresponding ModuleInfo represents metadata about that module, particularly its input and output names and types.

Author:

Aivar Grislis, Curtis Rueden

Method Summary

All Methods Instance Methods Abstract Methods Default Methods Deprecated Methods
Modifier and Type	Method	Description
`void`	`cancel()`	Performs necessary cleanup in response to cancellation of the module execution.
`Object`	`getDelegateObject()`	Gets the object containing the module's actual implementation.
`ModuleInfo`	`getInfo()`	Gets metadata about this module.
`Object`	`getInput(String name)`	Gets the value of the input with the given name.
`Map<String,Object>`	`getInputs()`	Gets a table of input values.
`Object`	`getOutput(String name)`	Gets the value of the output with the given name.
`Map<String,Object>`	`getOutputs()`	Gets a table of output values.
`void`	`initialize()`	Initializes the module.
`boolean`	`isInputResolved(String name)`	Gets the resolution status of the input with the given name.
`boolean`	`isOutputResolved(String name)`	Gets the resolution status of the output with the given name.
`default boolean`	`isResolved(String name)`	Deprecated. Use `isInputResolved(String)` instead.
`void`	`preview()`	Computes a preview of the module's execution results, if available.
`void`	`resolveInput(String name)`	Marks the input with the given name as resolved.
`void`	`resolveOutput(String name)`	Marks the output with the given name as resolved.
`void`	`setInput(String name, Object value)`	Sets the value of the input with the given name.
`void`	`setInputs(Map<String,Object> inputs)`	Sets input values according to the given table.
`void`	`setOutput(String name, Object value)`	Sets the value of the output with the given name.
`void`	`setOutputs(Map<String,Object> outputs)`	Sets output values according to the given table.
`default void`	`setResolved(String name, boolean resolved)`	Deprecated. Use `resolveInput(String)` and `unresolveInput(String)` instead.
`void`	`unresolveInput(String name)`	Marks the input with the given name as unresolved.
`void`	`unresolveOutput(String name)`	Marks the output with the given name as unresolved.

Methods inherited from interface java.lang.Runnable
run

- Method Detail
  - preview
```
void preview()
```
    Computes a preview of the module's execution results, if available. A preview is a quick approximation of the results that would be obtained by actually executing the module with Runnable.run(). Not all modules support previews.
    
    See Also:
    
    ModuleInfo.canPreview()
  - cancel
```
void cancel()
```
    Performs necessary cleanup in response to cancellation of the module execution. This is useful in conjunction with preview() to undo any changes made as a result of the preview.
    
    See Also:
    
    ModuleInfo.canCancel()
  - initialize
```
void initialize()
         throws MethodCallException
```
    Initializes the module.
    First, the module's global initializer method (if any) is called, followed by each individual ModuleItem initializer method (i.e., ModuleItem.initialize(Module)).
    
    Throws:
    
    MethodCallException
    
    See Also:
    
    ModuleInfo.getInitializer(), ModuleItem.initialize(Module)
  - getInfo
```
ModuleInfo getInfo()
```
    Gets metadata about this module.
  - getDelegateObject
```
Object getDelegateObject()
```
    Gets the object containing the module's actual implementation. By definition, this is an object whose fully qualified class name is given by getInfo().getDelegateClassName(). This object must possess all callback methods specified by ModuleItem.getCallback().
    The nature of this method is implementation-specific; e.g., a CommandModule will return its associated Command. For modules that are not plugins, the result may be something else. If you are implementing this interface directly, a good rule of thumb is to return this.
  - getInput
```
Object getInput(String name)
```
    Gets the value of the input with the given name.
  - getOutput
```
Object getOutput(String name)
```
    Gets the value of the output with the given name.
  - getInputs
```
Map<String,Object> getInputs()
```
    Gets a table of input values.
  - getOutputs
```
Map<String,Object> getOutputs()
```
    Gets a table of output values.
  - setInput
```
void setInput(String name,
              Object value)
```
    Sets the value of the input with the given name.
  - setOutput
```
void setOutput(String name,
               Object value)
```
    Sets the value of the output with the given name.
  - setInputs
```
void setInputs(Map<String,Object> inputs)
```
    Sets input values according to the given table.
  - setOutputs
```
void setOutputs(Map<String,Object> outputs)
```
    Sets output values according to the given table.
  - isInputResolved
```
boolean isInputResolved(String name)
```
    Gets the resolution status of the input with the given name.
    
    See Also:
    
    resolveInput(String)
  - isOutputResolved
```
boolean isOutputResolved(String name)
```
    Gets the resolution status of the output with the given name.
    
    See Also:
    
    resolveOutput(String)
  - resolveInput
```
void resolveInput(String name)
```
    Marks the input with the given name as resolved. A "resolved" input is known to have a final, valid value for use with the module.
    ModulePreprocessors in the module execution chain that populate input values (e.g. InputHarvester plugins) will typically skip over inputs which have already been resolved.
  - resolveOutput
```
void resolveOutput(String name)
```
    Marks the output with the given name as resolved. A "resolved" output has been handled by the framework somehow, typically displayed to the user.
    ModulePostprocessors in the module execution chain that handle output values (e.g. the DisplayPostprocessor) will typically skip over outputs which have already been resolved.
  - unresolveInput
```
void unresolveInput(String name)
```
    Marks the input with the given name as unresolved.
    
    See Also:
    
    resolveInput(String)
  - unresolveOutput
```
void unresolveOutput(String name)
```
    Marks the output with the given name as unresolved.
    
    See Also:
    
    resolveOutput(String)
  - isResolved
```
@Deprecated
default boolean isResolved(String name)
```
    Deprecated.
    Use isInputResolved(String) instead.
  - setResolved
```
@Deprecated
default void setResolved(String name,
                         boolean resolved)
```
    Deprecated.
    Use resolveInput(String) and unresolveInput(String) instead.

Interface Module

Method Summary

Methods inherited from interface java.lang.Runnable

Method Detail

preview

cancel

initialize

getInfo

getDelegateObject

getInput

getOutput

getInputs

getOutputs

setInput

setOutput

setInputs

setOutputs

isInputResolved

isOutputResolved

resolveInput

resolveOutput

unresolveInput

unresolveOutput

isResolved

setResolved