public void jsonSerializeTree(final ObjectMapper mapper, final OutputStream output)
throws IOException {
final JsonGenerator generator = mapper.getFactory().createJsonGenerator(output);
generator.configure(JsonGenerator.Feature.AUTO_CLOSE_TARGET, false);
walkTree(
new WalkCallback() {
private int curDepth = 0;
@Override
public void onCurrentNode(
final int depth, final NodeInterval curNode, final NodeInterval parent) {
final ItemsNodeInterval node = (ItemsNodeInterval) curNode;
if (node.isRoot()) {
return;
}
try {
if (curDepth < depth) {
generator.writeStartArray();
curDepth = depth;
} else if (curDepth > depth) {
generator.writeEndArray();
curDepth = depth;
}
generator.writeObject(node);
} catch (IOException e) {
throw new RuntimeException("Failed to deserialize tree", e);
}
}
});
generator.close();
}
static {
try {
WRITER = JSON_MAPPER.getFactory().createGenerator(System.out);
} catch (final IOException e) {
throw new RuntimeException(e);
}
WRITER.configure(Feature.AUTO_CLOSE_TARGET, false);
WRITER.useDefaultPrettyPrinter();
}