@Override
public void validateDatum(
final @NonNull NodesTransaction txn,
final @NonNull NodeId nodeId,
final @NonNull Datum datum) {
if (!(datum instanceof StringDatum))
throw new DataTypeException(nodeId, datum.getType(), StringDatumType.INSTANCE, getNodeId());
}
@Override
public @NonNull URL getUrl(final @NonNull NodesTransaction txn, final @NonNull NodeId nodeId) {
final Datum datum = txn.getDatum(nodeId);
if (!(datum instanceof StringDatum))
throw new DataTypeException(nodeId, datum.getType(), StringDatumType.INSTANCE, getNodeId());
final StringDatum stringDatum = (StringDatum) datum;
final String string = stringDatum.getValue();
try {
return new URL(string);
} catch (final MalformedURLException e) {
throw new RuntimeException(e);
}
}
@Override
public void writeData(final @NonNull OutputChannel channel, final @NonNull Datum datum) {
if (!(channel instanceof BdbOutputChannel))
throw new IllegalArgumentException("Not a BDB channel");
final BdbOutputChannel bdbChannel = (BdbOutputChannel) channel;
if (!(datum instanceof ContextualStringDatum))
throw new IllegalArgumentException("Not an string datum");
final ContextualStringDatum stringDatum = (ContextualStringDatum) datum;
try {
bdbChannel.writeDatumType(datum.getType());
bdbChannel.dos.writeBoolean(stringDatum.unique);
bdbChannel.writeNodeId(stringDatum.contextNodeId);
bdbChannel.dos.writeUTF(stringDatum.value);
} catch (final IOException e) {
throw new FoobarError("Unable to save string data", e);
}
}
@Override
public void writeKey(final @NonNull OutputChannel channel, final @NonNull Datum datum) {
if (!(channel instanceof BdbOutputChannel))
throw new IllegalArgumentException("Not a BDB channel");
final BdbOutputChannel bdbChannel = (BdbOutputChannel) channel;
if (!(datum instanceof ContextualStringDatum))
throw new IllegalArgumentException("Not an string datum");
final ContextualStringDatum stringDatum = (ContextualStringDatum) datum;
try {
bdbChannel.writeDatumType(datum.getType());
bdbChannel.dos.writeBoolean(stringDatum.unique);
bdbChannel.writeNodeId(stringDatum.contextNodeId);
// for the key we don't need to record the length because 1) it would
// mess up the ordering and 2) we don't need to read it back
final char[] chars = stringDatum.value.toCharArray();
for (final char c : chars) bdbChannel.dos.writeChar(c);
} catch (final IOException e) {
throw new FoobarError("Unable to save string key", e);
}
}
