/**
* Prepare a Research Object to be sent as a package in a zip format to dArceo.
*
* @param researchObject Research Object
* @return input stream with zipped ro.
* @throws IOException
*/
public static InputStream toZipInputStream(ResearchObjectSerializable researchObject) {
File tmpFile = null;
Set<String> entries = new HashSet<>();
try {
tmpFile = File.createTempFile("dArceoArtefact", ".zip");
tmpFile.deleteOnExit();
ZipOutputStream zipOutput = new ZipOutputStream(new FileOutputStream(tmpFile));
for (ResearchObjectComponentSerializable component :
researchObject.getSerializables().values()) {
Path componentPath = Paths.get(CONTENT_PATH, component.getPath());
putEntryAndDirectoriesPath(
zipOutput, componentPath.toString(), component.getSerialization(), entries);
}
// add metadata
putMetadataId(zipOutput, entries, researchObject.getUri());
zipOutput.flush();
zipOutput.close();
InputStream result = new FileInputStream(tmpFile);
tmpFile.delete();
return result;
} catch (IOException e) {
LOGGER.error("Can't prepare a RO " + researchObject.getUri() + " for dArceo", e);
if (tmpFile != null) {
tmpFile.delete();
}
return null;
}
}
@Test
public void testZipInputStreamToResearchObject() {
URI id = URI.create("http://www.example.com/ROs/simple/");
ResearchObjectSerializable ro =
IO.toResearchObject(id, getClass().getClassLoader().getResourceAsStream("simple.zip"));
// check the content of the returned ro
for (ResearchObjectComponentSerializable component : ro.getSerializables().values()) {
System.out.println(component.getUri());
}
Assert.assertNotNull(ro.getSerializables().get(id.resolve("1.txt")));
Assert.assertNotNull(ro.getSerializables().get(id.resolve("2.txt")));
Assert.assertNotNull(ro.getSerializables().get(id.resolve(".ro/manifest.rdf")));
Assert.assertNotNull(ro.getSerializables().get(id.resolve(".ro/evo_info.ttl")));
}