com.opengamma.web.server.push.rest.ReportMessageBodyWriter.java Source code

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Here is the source code for com.opengamma.web.server.push.rest.ReportMessageBodyWriter.java

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/**
 * Copyright (C) 2011 - present by OpenGamma Inc. and the OpenGamma group of companies
 *
 * Please see distribution for license.
 */
package com.opengamma.web.server.push.rest;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

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

import org.apache.commons.io.IOUtils;

import com.opengamma.web.server.push.reports.Report;

/**
 * Writes {@link Report} instance into the body of an HTTP reponse.
 * @deprecated reports are going to be redesigned
 */
@Provider
public class ReportMessageBodyWriter implements MessageBodyWriter<Report> {

    /**
     * @param type Must be {@link Report}
     * @return {@code true} if {@code type} is {@link Report}
     */
    @Override
    public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return Report.class.equals(type);
    }

    /**
     * TODO is this a problem?
     * @return -1 (size not known)
     */
    @Override
    public long getSize(Report report, Class<?> type, Type genericType, Annotation[] annotations,
            MediaType mediaType) {
        return -1;
    }

    /**
     * Writes from {@link Report#getInputStream()} to {@code entityStream}.
     */
    @Override
    public void writeTo(Report report, Class<?> type, Type genericType, Annotation[] annotations,
            MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
            throws IOException, WebApplicationException {
        InputStream inputStream = null;
        try {
            inputStream = report.getInputStream();
            IOUtils.copy(inputStream, entityStream);
        } finally {
            IOUtils.closeQuietly(inputStream);
        }
    }
}