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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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/*
 * #%L
 * SciJava Common shared library for SciJava software.
 * %%
 * Copyright (C) 2009 - 2016 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
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 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * 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.convert;

import org.scijava.Priority;
import org.scijava.plugin.Plugin;
import org.scijava.util.ClassUtils;
import org.scijava.util.ConversionUtils;
import org.scijava.util.GenericUtils;

/**
 * Minimal {@link Converter} implementation to do direct casting.
 *
 * @author Mark Hiner
 */
@Plugin(type = Converter.class, priority = Priority.FIRST_PRIORITY)
public class CastingConverter extends AbstractConverter {

	@SuppressWarnings("deprecation")
	@Override
	public boolean canConvert(final Object src, final Class dest) {
		return ClassUtils.canCast(src, dest);
	}

	@Override
	public boolean canConvert(final Class src, final Class dest) {
		// OK if the existing object can be casted
		if (ConversionUtils.canCast(src, dest))
			return true;

		return false;
	}

	@SuppressWarnings("unchecked")
	@Override
	public  T convert(final Object src, final Class dest) {
		// NB: Regardless of whether the destination type is an array or
		// collection, we still want to cast directly if doing so is possible.
		// But note that in general, this check does not detect cases of
		// incompatible generic parameter types. If this limitation becomes a
		// problem in the future we can extend the logic here to provide
		// additional signatures of canCast which operate on Types in general
		// rather than only Classes. However, the logic could become complex
		// very quickly in various subclassing cases, generic parameters
		// resolved vs. propagated, etc.
		final Class c = GenericUtils.getClass(dest);
		return (T) ConversionUtils.cast(src, c);
	}

	@Override
	public Class