/**
* Deserializes examplars stored in archives in getArchiveDirectory().
*
* @throws RuntimeException if clazz cannot be serialized. This exception has an informative
* message and wraps the originally thrown exception as root cause.
* @see #getArchiveDirectory()
*/
public void deserializeArchivedVersions() throws RuntimeException {
System.out.println("Deserializing archived instances in " + getArchiveDirectory() + ".");
File archive = new File(getArchiveDirectory());
if (!archive.exists() || !archive.isDirectory()) {
return;
}
String[] listing = archive.list();
for (String archiveName : listing) {
if (!(archiveName.endsWith(".zip"))) {
continue;
}
try {
File file = new File(getArchiveDirectory(), archiveName);
ZipFile zipFile = new ZipFile(file);
ZipEntry entry = zipFile.getEntry("class_fields.ser");
InputStream inputStream = zipFile.getInputStream(entry);
ObjectInputStream objectIn = new ObjectInputStream(inputStream);
Map<String, List<String>> classFields = (Map<String, List<String>>) objectIn.readObject();
zipFile.close();
for (String className : classFields.keySet()) {
// if (classFields.equals("HypotheticalGraph")) continue;
List<String> fieldNames = classFields.get(className);
Class<?> clazz = Class.forName(className);
ObjectStreamClass streamClass = ObjectStreamClass.lookup(clazz);
if (streamClass == null) {
System.out.println();
}
for (String fieldName : fieldNames) {
assert streamClass != null;
ObjectStreamField field = streamClass.getField(fieldName);
if (field == null) {
throw new RuntimeException(
"Field '"
+ fieldName
+ "' was dropped from class '"
+ className
+ "' as a serializable field! Please "
+ "put it back!!!"
+ "\nIt used to be in "
+ className
+ " in this archive: "
+ archiveName
+ ".");
}
}
}
} catch (ClassNotFoundException e) {
throw new RuntimeException(
"Could not read class_fields.ser in archive + " + archiveName + " .", e);
} catch (IOException e) {
throw new RuntimeException("Problem reading archive" + archiveName + "; see cause.", e);
}
System.out.println("...Deserializing instances in " + archiveName + "...");
ZipEntry zipEntry = null;
try {
File file = new File(getArchiveDirectory(), archiveName);
FileInputStream in = new FileInputStream(file);
ZipInputStream zipinputstream = new ZipInputStream(in);
while ((zipEntry = zipinputstream.getNextEntry()) != null) {
if (!zipEntry.getName().endsWith(".ser")) {
continue;
}
ObjectInputStream objectIn = new ObjectInputStream(zipinputstream);
objectIn.readObject();
zipinputstream.closeEntry();
}
zipinputstream.close();
} catch (ClassNotFoundException e) {
throw new RuntimeException(
"Could not read object zipped file "
+ zipEntry.getName()
+ " in archive "
+ archiveName
+ ". "
+ "Perhaps the class was renamed, moved to another package, or "
+ "removed. In any case, please put it back where it was.",
e);
} catch (IOException e) {
throw new RuntimeException("Problem reading archive" + archiveName + "; see cause.", e);
}
}
System.out.println("Finished deserializing archived instances.");
}
/** java.io.ObjectStreamClass#getField(java.lang.String) */
public void test_getFieldLjava_lang_String() {
ObjectStreamClass osc = ObjectStreamClass.lookup(DummyClass.class);
assertEquals("getField did not return correct field", 'J', osc.getField("bam").getTypeCode());
assertNull("getField did not null for non-existent field", osc.getField("wham"));
}