/**
* Returns the definition of the selected attribute / object class OID.
*
* @param schemaEntry The selected schema entry to search on.
* @param type The type of the research. ("objectClasses" or "attributeTypes")
* @param oid The OID of the element to search for.
* @return The byte string definition of the element.
*/
private static ByteString getSchemaElement(
final Entry schemaEntry, final String type, final String oid) {
final Attribute attribute = schemaEntry.getAttribute(type);
final MatchingRule mrule = CoreSchema.getObjectIdentifierFirstComponentMatchingRule();
Assertion assertion;
try {
assertion = mrule.getAssertion(ByteString.valueOfUtf8(oid));
for (final ByteString value : attribute) {
final ByteString nvalue = mrule.normalizeAttributeValue(value);
if (assertion.matches(nvalue).toBoolean()) {
return value;
}
}
} catch (DecodeException e) {
throw new IllegalStateException(e);
}
throw new IllegalStateException(ERR_UPGRADE_UNKNOWN_OC_ATT.get(type, oid).toString());
}
/**
* This task adds new attributes / object classes to the specified destination file. The new
* attributes and object classes must be originally defined in the template file.
*
* @param templateFile The file in which the new attribute/object definition can be read.
* @param destination The file where we want to add the new definitions.
* @param attributes Those attributes needed to be inserted into the new destination file.
* @param objectClasses Those object classes needed to be inserted into the new destination file.
* @return An integer which represents each time an attribute / object class is inserted
* successfully to the destination file.
* @throws IOException If an unexpected IO error occurred while reading the entry.
* @throws IllegalStateException Failure to find an attribute in the template schema indicates
* either a programming error (e.g. typo in the attribute name) or template corruption.
* Upgrade should stop.
*/
static int updateSchemaFile(
final File templateFile,
final File destination,
final String[] attributes,
final String[] objectClasses)
throws IOException, IllegalStateException {
int changeCount = 0;
LDIFEntryReader templateReader = null;
LDIFEntryReader destinationReader = null;
LDIFEntryWriter destinationWriter = null;
File copy = null;
try {
templateReader = new LDIFEntryReader(new FileInputStream(templateFile));
if (!templateReader.hasNext()) {
// Unless template are corrupted, this should not happen.
throw new IOException(
ERR_UPGRADE_CORRUPTED_TEMPLATE.get(templateFile.getPath()).toString());
}
final Entry templateSchemaEntry = templateReader.readEntry();
destinationReader = new LDIFEntryReader(new FileInputStream(destination));
if (!destinationReader.hasNext()) {
// Unless template are corrupted, this should not happen.
throw new IOException(ERR_UPGRADE_CORRUPTED_TEMPLATE.get(destination.getPath()).toString());
}
final Entry destinationSchemaEntry = destinationReader.readEntry();
if (attributes != null) {
for (final String att : attributes) {
final ByteString attributeType =
getSchemaElement(templateSchemaEntry, "attributeTypes", att);
destinationSchemaEntry.getAttribute("attributeTypes").add(attributeType);
changeCount++;
logger.debug(LocalizableMessage.raw(String.format("Added %s", attributeType)));
}
}
if (objectClasses != null) {
for (final String oc : objectClasses) {
final ByteString objectClass = getSchemaElement(templateSchemaEntry, "objectClasses", oc);
destinationSchemaEntry.getAttribute("objectClasses").add(objectClass);
changeCount++;
logger.trace("Added %s", objectClass);
}
}
// Then writes the new schema entry.
copy = File.createTempFile("copySchema", ".tmp", destination.getParentFile());
final FileOutputStream fos = new FileOutputStream(copy);
destinationWriter = new LDIFEntryWriter(fos);
destinationWriter.setWrapColumn(79);
// Copy comments to fos (get License and first comments only).
writeFileHeaderComments(templateFile, destinationWriter);
// Writes the entry after.
destinationWriter.writeEntry(destinationSchemaEntry);
} finally {
// Readers and writer must be close before writing files.
// This causes exceptions under windows OS.
StaticUtils.close(templateReader, destinationReader, destinationWriter);
}
// Renames the copy to make it the new schema file.
try {
rename(copy, destination);
} catch (IOException e) {
logger.error(LocalizableMessage.raw(e.getMessage()));
deleteRecursively(copy);
throw e;
}
return changeCount;
}