public final void readFields(DataInput in) throws IOException {
metadata.clear();
int sizeOrVersion = in.readInt();
if (sizeOrVersion < 0) { // version
version = sizeOrVersion;
switch (version) {
case VERSION:
url = Text.readString(in);
base = Text.readString(in);
content = new byte[in.readInt()];
in.readFully(content);
contentType = Text.readString(in);
metadata.readFields(in);
break;
default:
throw new VersionMismatchException((byte) VERSION, (byte) version);
}
} else { // size
byte[] compressed = new byte[sizeOrVersion];
in.readFully(compressed, 0, compressed.length);
ByteArrayInputStream deflated = new ByteArrayInputStream(compressed);
DataInput inflater = new DataInputStream(new InflaterInputStream(deflated));
readFieldsCompressed(inflater);
}
}
private final void readFieldsCompressed(DataInput in) throws IOException {
byte oldVersion = in.readByte();
switch (oldVersion) {
case 0:
case 1:
url = UTF8.readString(in); // read url
base = UTF8.readString(in); // read base
content = new byte[in.readInt()]; // read content
in.readFully(content);
contentType = UTF8.readString(in); // read contentType
// reconstruct metadata
int keySize = in.readInt();
String key;
for (int i = 0; i < keySize; i++) {
key = UTF8.readString(in);
int valueSize = in.readInt();
for (int j = 0; j < valueSize; j++) {
metadata.add(key, UTF8.readString(in));
}
}
break;
case 2:
url = Text.readString(in); // read url
base = Text.readString(in); // read base
content = new byte[in.readInt()]; // read content
in.readFully(content);
contentType = Text.readString(in); // read contentType
metadata.readFields(in); // read meta data
break;
default:
throw new VersionMismatchException((byte) 2, oldVersion);
}
}