Add JavaRunner plugin type, for executing classes

This will give us extensibility with respect to how the Java script
language runs Java code, rather than always just launching main.

Author: ctrueden

src/main/java/org/scijava/plugins/scripting/java/AbstractJavaRunner.java

@@ -0,0 +1,53 @@
+/*
+ * #%L
+ * JSR-223-compliant Java scripting language plugin.
+ * %%
+ * Copyright (C) 2008 - 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,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * #L%
+ */
+
+package org.scijava.plugins.scripting.java;
+
+import org.scijava.plugin.AbstractHandlerPlugin;
+
+/**
+ * Abstract superclass of {@link JavaRunner} implementations.
+ * 
+ * @author Curtis Rueden
+ */
+public abstract class AbstractJavaRunner extends
+	AbstractHandlerPlugin<Class<?>> implements JavaRunner
+{
+
+	// -- Typed methods --
+
+	@Override
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	public Class<Class<?>> getType() {
+		return (Class) Class.class;
+	}
+
+}

src/main/java/org/scijava/plugins/scripting/java/JavaRunner.java

@@ -0,0 +1,58 @@
+/*
+ * #%L
+ * JSR-223-compliant Java scripting language plugin.
+ * %%
+ * Copyright (C) 2008 - 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,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * #L%
+ */
+
+package org.scijava.plugins.scripting.java;
+
+import javax.script.ScriptException;
+
+import org.scijava.plugin.HandlerPlugin;
+import org.scijava.plugin.Plugin;
+
+/**
+ * A plugin which extends an Java script language's execution handling. A
+ * {@code JavaRunner} knows how to execute certain classes, beyond just Java's
+ * usual {@code main} method.
+ * <p>
+ * Java runner plugins discoverable at runtime must implement this interface and
+ * be annotated with @{@link Plugin} with attribute {@link Plugin#type()} =
+ * {@link JavaRunner}.class. While it possible to create an console argument
+ * plugin merely by implementing this interface, it is encouraged to instead
+ * extend {@link AbstractJavaRunner}, for convenience.
+ * </p>
+ * 
+ * @author Curtis Rueden
+ */
+public interface JavaRunner extends HandlerPlugin<Class<?>> {
+
+	/** Executes the given class. */
+	void run(Class<?> c) throws ScriptException;
+
+}