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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.
* 2. Redistributions in binary form must reproduce the above copyright notice,
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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package org.scijava.app;
import java.io.File;
import org.scijava.plugin.AbstractRichPlugin;
import org.scijava.util.AppUtils;
import org.scijava.util.Manifest;
import org.scijava.util.POM;
/**
* Abstract superclass of {@link App} implementations.
*
* @author Curtis Rueden
*/
public abstract class AbstractApp extends AbstractRichPlugin implements App {
/** Maven POM with metadata about the application. */
private POM pom;
/** JAR manifest with metadata about the application. */
private Manifest manifest;
@Override
public String getTitle() {
return getInfo().getName();
}
@Override
public String getVersion() {
return getPOM() == null ? "Unknown" : getPOM().getVersion();
}
@Override
public POM getPOM() {
if (pom == null) {
// load the POM lazily
pom = POM.getPOM(getClass(), getGroupId(), getArtifactId());
}
return pom;
}
@Override
public Manifest getManifest() {
if (manifest == null) {
// load the manifest lazily
manifest = Manifest.getManifest(getClass());
}
return manifest;
}
@Override
public String getInfo(boolean mem) {
final String appTitle = getTitle();
final String appVersion = getVersion();
final String javaVersion = System.getProperty("java.version");
final String osArch = System.getProperty("os.arch");
final long maxMem = Runtime.getRuntime().maxMemory();
final long totalMem = Runtime.getRuntime().totalMemory();
final long freeMem = Runtime.getRuntime().freeMemory();
final long usedMem = totalMem - freeMem;
final long usedMB = usedMem / 1048576;
final long maxMB = maxMem / 1048576;
final StringBuilder sb = new StringBuilder();
sb.append(appTitle + " " + appVersion);
sb.append("; Java " + javaVersion + " [" + osArch + "]");
if (mem) sb.append("; " + usedMB + "MB of " + maxMB + "MB");
return sb.toString();
}
@Override
public String getSystemProperty() {
return getInfo().getName().toLowerCase() + ".dir";
}
@Override
public File getBaseDirectory() {
return AppUtils.getBaseDirectory(getSystemProperty(), getClass(), null);
}
}