IReportingService draft

IReportingService.java

package de.lmu.ifi.dbs.medmon.medic.core.service;

import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Path;
import java.util.Map;

public interface IReportingService {
	
	//TODO Maybe one more parameter to determine if the report should be rendered as html, pdf, etc
	/**
	 * 
	 * @param reportDocument
	 * @param reportOutput
	 */
	public void renderReport(InputStream reportDocument, OutputStream reportOutput);
	
	
	//TODO Maybe one more parameter to determine if the report should be rendered as html, pdf, etc
	/**
	 * 
	 * @param reportDesign - InputStream for reportDesign
	 * @param taskParameters - parameters to needed by the report, e.g. data or scheme files 
	 * @param loader - to allocate the classes
	 * @param reportOutput - OutputStream where the report should be stored
	 */
	public void renderReport(InputStream reportDesign, Map<String, Object> taskParameters, ClassLoader loader, Path reportOutput);
	
	//TODO Maybe one more parameter to determine if the report should be rendered as html, pdf, etc
	/**
	 * 
	 * @param reportDesign
	 * @param taskParameters
	 * @param loader
	 * @param reportDocumentOutput
	 */
	public void createReportDocument(InputStream reportDesign, Map<String, Object> taskParameters, ClassLoader loader, Path reportDocumentOutput);
	
}

the createReportDocument method should not use a java.nio.Path argument. Instead use
OutputStream to store the document and write it to a temporary file if necessary. E.g with

        try {
            Path tempFile = Files.createTempFile("prefix", "sufix");
            System.out.println("Temp file " + tempFile);

            try (BufferedWriter writer = Files.newBufferedWriter(tempFile, Charset.defaultCharset())) {
                writer.write("Test string");
                writer.newLine();
                writer.write("Line 2");
                writer.flush();
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

            try (BufferedReader reader = Files.newBufferedReader(tempFile, Charset.defaultCharset())) {
                String first = reader.readLine();
                System.out.println(first);
                String second = reader.readLine();
                System.out.println(second);
                reader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            Files.deleteIfExists(tempFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }