private static void addElement(
List<String> lines, Patch patch, Map<String, RevFeatureType> featureTypes)
throws IOException {
String[] headerTokens = lines.get(0).split("\t");
if (headerTokens.length == 4 || headerTokens.length == 3) { // feature or feature type
// modified // modification
if (lines.size() == 1) { // feature type
FeatureTypeDiff diff =
new FeatureTypeDiff(
headerTokens[0],
ObjectId.valueOf(headerTokens[1]),
ObjectId.valueOf(headerTokens[2]));
patch.addAlteredTree(diff);
} else { // feature
String element = Joiner.on("\n").join(lines.subList(1, lines.size()));
ByteArrayInputStream stream;
stream = new ByteArrayInputStream(element.getBytes(Charsets.UTF_8));
String operation = headerTokens[0].trim();
if (operation.equals("M")) {
String fullPath = headerTokens[1].trim();
String oldMetadataId = headerTokens[2].trim();
String newMetadataId = headerTokens[3].trim();
RevFeatureType newRevFeatureType = featureTypes.get(newMetadataId);
RevFeatureType oldRevFeatureType = featureTypes.get(oldMetadataId);
Map<PropertyDescriptor, AttributeDiff> map = Maps.newHashMap();
for (int i = 1; i < lines.size(); i++) {
addDifference(lines.get(i), map, oldRevFeatureType, newRevFeatureType);
}
FeatureDiff featureDiff =
new FeatureDiff(fullPath, map, oldRevFeatureType, newRevFeatureType);
patch.addModifiedFeature(featureDiff);
} else if (operation.equals("A") || operation.equals("R")) {
String fullPath = headerTokens[1].trim();
String featureTypeId = headerTokens[2].trim();
RevFeatureType revFeatureType;
revFeatureType = featureTypes.get(featureTypeId);
FeatureBuilder featureBuilder = new FeatureBuilder(revFeatureType);
RevFeature revFeature = (RevFeature) serializer.read(null, stream);
Feature feature = featureBuilder.build(NodeRef.nodeFromPath(fullPath), revFeature);
if (operation.equals("R")) {
patch.addRemovedFeature(fullPath, feature, revFeatureType);
} else {
patch.addAddedFeature(fullPath, feature, revFeatureType);
}
} else {
throw new IllegalArgumentException("Wrong patch content: " + lines.get(0));
}
}
} else if (headerTokens.length == 1) { // feature type definition
String element = Joiner.on("\n").join(lines);
ByteArrayInputStream stream = new ByteArrayInputStream(element.getBytes(Charsets.UTF_8));
String[] tokens = lines.get(1).split("\t");
RevFeatureType featureType = (RevFeatureType) serializer.read(null, stream);
featureTypes.put(featureType.getId().toString(), featureType);
} else {
throw new IllegalArgumentException("Wrong patch content: " + lines.get(0));
}
}
