juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/reshandlers/ReaderHandler.java

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package org.apache.juneau.rest.reshandlers;

import java.io.*;

import org.apache.juneau.rest.*;
import org.apache.juneau.http.exception.*;
import org.apache.juneau.utils.*;

/**
 * Response handler for {@link Reader} objects.
 *
 * <p>
 * Simply pipes the contents of the {@link Reader} to {@link RestResponse#getNegotiatedWriter()}.
 *
 * <ul class='seealso'>
 * 	<li class='link'>{@doc juneau-rest-server.RestMethod.MethodReturnTypes}
 * </ul>
 */
public final class ReaderHandler implements ResponseHandler {

	@Override /* ResponseHandler */
	public boolean handle(RestRequest req, RestResponse res) throws IOException, NotAcceptable, HttpException {
		if (res.isOutputType(Reader.class)) {
			try (Writer w = res.getNegotiatedWriter()) {
				IOPipe.create(res.getOutput(Reader.class), w).run();
			}
			return true;
		}
		return false;
	}
}