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LinkService.java
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/*-
* #%L
* URL scheme handlers for SciJava.
* %%
* Copyright (C) 2023 - 2025 SciJava developers.
* %%
* 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.links;
import org.scijava.log.Logger;
import org.scijava.plugin.HandlerService;
import org.scijava.service.SciJavaService;
import java.net.URI;
import java.util.Optional;
/**
* Service interface for handling URIs.
*
* @author Curtis Rueden
* @see LinkHandler
*/
public interface LinkService extends HandlerService<URI, LinkHandler>,
SciJavaService
{
default void handle(final URI uri) {
// Find the highest-priority link handler plugin which matches, if any.
final Optional<LinkHandler> match = getInstances().stream() //
.filter(handler -> handler.supports(uri)) //
.findFirst();
if (!match.isPresent()) {
// No appropriate link handler plugin was found.
final Logger log = log();
if (log != null) log.debug("No handler for URI: " + uri);
return; // no handler for this URI
}
// Handle the URI using the matching link handler.
match.get().handle(uri);
}
// -- PTService methods --
@Override
default Class<LinkHandler> getPluginType() {
return LinkHandler.class;
}
// -- Typed methods --
@Override
default Class<URI> getType() {
return URI.class;
}
}