ee.jakarta.tck.ws.rs.spec.provider.overridestandard.TckReaderProvider Maven / Gradle / Ivy

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/*
 * Copyright (c) 2012, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package ee.jakarta.tck.ws.rs.spec.provider.overridestandard;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import jakarta.ws.rs.WebApplicationException;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.ext.MessageBodyReader;
import jakarta.ws.rs.ext.MessageBodyWriter;
import jakarta.ws.rs.ext.Provider;

@Provider
public class TckReaderProvider extends AbstractProvider
    implements MessageBodyReader, MessageBodyWriter {

  @Override
  public boolean isWriteable(Class type, Type genericType,
      Annotation[] annotations, MediaType mediaType) {
    return Reader.class.isAssignableFrom(type);
  }

  @Override
  public long getSize(Reader t, Class type, Type genericType,
      Annotation[] annotations, MediaType mediaType) {
    return getLength();
  }

  @Override
  public void writeTo(Reader t, Class type, Type genericType,
      Annotation[] annotations, MediaType mediaType,
      MultivaluedMap httpHeaders, OutputStream entityStream)
      throws IOException, WebApplicationException {
    BufferedReader br = new BufferedReader(t);
    String text = br.readLine();
    entityStream.write(text == null ? "".getBytes() : text.getBytes());
    entityStream.write(getWriterName().getBytes());
  }

  @Override
  public boolean isReadable(Class type, Type genericType,
      Annotation[] annotations, MediaType mediaType) {
    return isWriteable(type, genericType, annotations, mediaType);
  }

  @Override
  public Reader readFrom(Class type, Type genericType,
      Annotation[] annotations, MediaType mediaType,
      MultivaluedMap httpHeaders, InputStream entityStream)
      throws IOException, WebApplicationException {
    InputStream is = new ByteArrayInputStream(getReaderName().getBytes());
    Reader reader = new InputStreamReader(is);
    return reader;
  }

}