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SciJava Common is a shared library for SciJava software. It provides a plugin framework, with an extensible mechanism for service discovery, backed by its own annotation processor, so that plugins can be loaded dynamically. It is used by downstream projects in the SciJava ecosystem, such as ImageJ and SCIFIO.
/*
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* SciJava Common shared library for SciJava software.
* %%
* Copyright (C) 2009 - 2014 Board of Regents of the University of
* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
* Institute of Molecular Cell Biology and Genetics.
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
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package org.scijava.module;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Future;
import org.scijava.Prioritized;
import org.scijava.input.Accelerator;
import org.scijava.module.process.ModulePostprocessor;
import org.scijava.module.process.ModulePreprocessor;
import org.scijava.module.process.PostprocessorPlugin;
import org.scijava.module.process.PreprocessorPlugin;
import org.scijava.prefs.PrefService;
import org.scijava.service.SciJavaService;
/**
* Interface for service that tracks and executes available modules.
*
* The module service keeps a master index of all modules known to the system.
* At heart, a module is a {@link Runnable} piece of code, but with explicit
* typed input and output parameters.
*
*
* The module service has no innate ability to discover modules, and must be
* explicitly told about them via the {@link #addModule} and {@link #addModules}
* methods.
*
*
* A module is distinct from a plugin in that plugins extend
* ImageJ's functionality in some way, taking many forms, whereas modules are
* always runnable code with typed inputs and outputs. There is a particular
* type of plugin called a {@link org.scijava.command.Command} which is also a
* module, but many plugins (e.g., {@link org.scijava.tool.Tool}s and
* {@link org.scijava.display.Display}s) are not modules.
*
*
* @author Curtis Rueden
* @see Module
* @see org.scijava.plugin.PluginService
*/
public interface ModuleService extends SciJavaService {
/** Gets the index of available modules. */
ModuleIndex getIndex();
/** Manually registers a module with the module service. */
void addModule(ModuleInfo module);
/** Manually unregisters a module with the module service. */
void removeModule(ModuleInfo module);
/** Manually registers a list of modules with the module service. */
void addModules(Collection modules);
/** Manually unregisters a list of modules with the module service. */
void removeModules(Collection modules);
/** Gets the list of available modules. */
List getModules();
/**
* Gets the module for a given keyboard shortcut.
*
* @param acc the accelerator for which to search.
* @return the module info for the corresponding module, or null.
*/
ModuleInfo getModuleForAccelerator(Accelerator acc);
/**
* Creates an instance of the given module.
*
* If the module implements the {@link org.scijava.Contextual} interface, the
* appropriate context is injected. Similarly, if the module implements the
* {@link Prioritized} interface, the appropriate priority is injected.
*
*
* Note that in the case of commands, this method does not do any
* preprocessing on the command instances, so parameters will not be
* auto-populated, initializers will not be executed, etc.
*
*/
Module createModule(ModuleInfo info);
/**
* Executes the given module.
*
* @param info The module to instantiate and run.
* @param process If true, executes the module with pre- and postprocessing
* steps from all available {@link PreprocessorPlugin}s and
* {@link PostprocessorPlugin}s in the plugin index; if false,
* executes the module with no pre- or postprocessing.
* @param inputs List of input parameter names and values. The expected order
* is in pairs: an input name followed by its value, for each desired
* input to populate. Leaving some inputs unpopulated is allowed.
* Passing the name of an input that is not valid for the module, or
* passing a value of a type incompatible with the associated input
* parameter, will issue an error and ignore that name/value pair.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(ModuleInfo info, boolean process, Object... inputs);
/**
* Executes the given module.
*
* @param info The module to instantiate and run.
* @param process If true, executes the module with pre- and postprocessing
* steps from all available {@link PreprocessorPlugin}s and
* {@link PostprocessorPlugin}s in the plugin index; if false,
* executes the module with no pre- or postprocessing.
* @param inputMap Table of input parameter values, with keys matching the
* {@link ModuleInfo}'s input parameter names. Passing a value of a
* type incompatible with the associated input parameter will issue
* an error and ignore that value.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(ModuleInfo info, boolean process,
Map inputMap);
/**
* Executes the given module.
*
* @param info The module to instantiate and run.
* @param pre List of preprocessing steps to perform.
* @param post List of postprocessing steps to perform.
* @param inputs List of input parameter names and values. The expected order
* is in pairs: an input name followed by its value, for each desired
* input to populate. Leaving some inputs unpopulated is allowed.
* Passing the name of an input that is not valid for the module, or
* passing a value of a type incompatible with the associated input
* parameter, will issue an error and ignore that name/value pair.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(ModuleInfo info, List pre,
List post, Object... inputs);
/**
* Executes the given module.
*
* @param info The module to instantiate and run.
* @param pre List of preprocessing steps to perform.
* @param post List of postprocessing steps to perform.
* @param inputMap Table of input parameter values, with keys matching the
* {@link ModuleInfo}'s input parameter names. Passing a value of a
* type incompatible with the associated input parameter will issue
* an error and ignore that value.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(ModuleInfo info, List pre,
List post, Map inputMap);
/**
* Executes the given module.
*
* @param module The module to run.
* @param process If true, executes the module with pre- and postprocessing
* steps from all available {@link PreprocessorPlugin}s and
* {@link PostprocessorPlugin}s in the plugin index; if false,
* executes the module with no pre- or postprocessing.
* @param inputs List of input parameter names and values. The expected order
* is in pairs: an input name followed by its value, for each desired
* input to populate. Leaving some inputs unpopulated is allowed.
* Passing the name of an input that is not valid for the module, or
* passing a value of a type incompatible with the associated input
* parameter, will issue an error and ignore that name/value pair.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(M module, boolean process, Object... inputs);
/**
* Executes the given module.
*
* @param module The module to run.
* @param process If true, executes the module with pre- and postprocessing
* steps from all available {@link PreprocessorPlugin}s and
* {@link PostprocessorPlugin}s in the plugin index; if false,
* executes the module with no pre- or postprocessing.
* @param inputMap Table of input parameter values, with keys matching the
* {@link ModuleInfo}'s input parameter names. Passing a value of a
* type incompatible with the associated input parameter will issue
* an error and ignore that value.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(M module, boolean process,
Map inputMap);
/**
* Executes the given module.
*
* @param module The module to run.
* @param pre List of preprocessing steps to perform.
* @param post List of postprocessing steps to perform.
* @param inputs List of input parameter names and values. The expected order
* is in pairs: an input name followed by its value, for each desired
* input to populate. Leaving some inputs unpopulated is allowed.
* Passing the name of an input that is not valid for the module, or
* passing a value of a type incompatible with the associated input
* parameter, will issue an error and ignore that name/value pair.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(M module,
List pre,
List post, Object... inputs);
/**
* Executes the given module.
*
* @param module The module to run.
* @param pre List of preprocessing steps to perform.
* @param post List of postprocessing steps to perform.
* @param inputMap Table of input parameter values, with keys matching the
* module's {@link ModuleInfo}'s input parameter names. Passing a
* value of a type incompatible with the associated input parameter
* will issue an error and ignore that value.
* @return {@link Future} of the module instance being executed. Calling
* {@link Future#get()} will block until execution is complete.
*/
Future run(M module,
List pre,
List post, Map inputMap);
/** Blocks until the given module is finished executing. */
M waitFor(Future future);
/**
* Checks the given module for a solitary unresolved fillable input of the
* given type, returning the relevant {@link ModuleItem} if found, or null if
* not exactly one unresolved fillable input of that type.
*/
ModuleItem getSingleInput(Module module, Class type);
/**
* Checks the given module for a solitary unresolved output of the given type,
* returning the relevant {@link ModuleItem} if found, or null if not exactly
* one unresolved output of that type.
*/
ModuleItem getSingleOutput(Module module, Class type);
/**
* Registers the given value for the given {@link ModuleItem} using the
* {@link PrefService}.
*/
void save(ModuleItem item, T value);
/**
* Returns the value, if any, stored in the {@link PrefService} for the given
* {@link ModuleItem}.
*/
T load(ModuleItem item);
}