private JSONObject setFieldAttributes(String clazz, CompactFieldNode field) throws JSONException {
JSONObject port = new JSONObject();
port.put("name", field.getName());
TypeGraphVertex tgv = typeGraph.getTypeGraphVertex(clazz);
putFieldDescription(field, port, tgv);
List<CompactAnnotationNode> annotations = field.getVisibleAnnotations();
CompactAnnotationNode firstAnnotation;
if (annotations != null
&& !annotations.isEmpty()
&& (firstAnnotation = field.getVisibleAnnotations().get(0)) != null) {
for (Map.Entry<String, Object> entry : firstAnnotation.getAnnotations().entrySet()) {
port.put(entry.getKey(), entry.getValue());
}
}
return port;
}
private OperatorClassInfo getOperatorClassWithGetterSetter(
String operatorClass, String setterName, String getterName) {
TypeGraphVertex tgv = typeGraph.getTypeGraphVertex(operatorClass);
return getOperatorClassWithGetterSetter(tgv, setterName, getterName);
}
public JSONObject describeOperator(String clazz) throws Exception {
TypeGraphVertex tgv = typeGraph.getTypeGraphVertex(clazz);
if (tgv.isInstantiable()) {
JSONObject response = new JSONObject();
JSONArray inputPorts = new JSONArray();
JSONArray outputPorts = new JSONArray();
// Get properties from ASM
JSONObject operatorDescriptor = describeClassByASM(clazz);
JSONArray properties = operatorDescriptor.getJSONArray("properties");
properties = enrichProperties(clazz, properties);
JSONArray portTypeInfo = operatorDescriptor.getJSONArray("portTypeInfo");
List<CompactFieldNode> inputPortfields = typeGraph.getAllInputPorts(clazz);
List<CompactFieldNode> outputPortfields = typeGraph.getAllOutputPorts(clazz);
try {
for (CompactFieldNode field : inputPortfields) {
JSONObject inputPort = setFieldAttributes(clazz, field);
if (!inputPort.has("optional")) {
inputPort.put(
"optional",
false); // input port that is not annotated is default to be not optional
}
if (!inputPort.has(SCHEMA_REQUIRED_KEY)) {
inputPort.put(SCHEMA_REQUIRED_KEY, false);
}
inputPorts.put(inputPort);
}
for (CompactFieldNode field : outputPortfields) {
JSONObject outputPort = setFieldAttributes(clazz, field);
if (!outputPort.has("optional")) {
outputPort.put(
"optional", true); // output port that is not annotated is default to be optional
}
if (!outputPort.has("error")) {
outputPort.put("error", false);
}
if (!outputPort.has(SCHEMA_REQUIRED_KEY)) {
outputPort.put(SCHEMA_REQUIRED_KEY, false);
}
outputPorts.put(outputPort);
}
response.put("name", clazz);
response.put("properties", properties);
response.put(PORT_TYPE_INFO_KEY, portTypeInfo);
response.put("inputPorts", inputPorts);
response.put("outputPorts", outputPorts);
OperatorClassInfo oci = classInfo.get(clazz);
if (oci != null) {
if (oci.comment != null) {
String[] descriptions;
// first look for a <p> tag
String keptPrefix = "<p>";
descriptions = oci.comment.split("<p>", 2);
if (descriptions.length == 0) {
keptPrefix = "";
// if no <p> tag, then look for a blank line
descriptions = oci.comment.split("\n\n", 2);
}
if (descriptions.length > 0) {
response.put("shortDesc", descriptions[0]);
}
if (descriptions.length > 1) {
response.put("longDesc", keptPrefix + descriptions[1]);
}
}
response.put("category", oci.tags.get("@category"));
String displayName = oci.tags.get("@displayName");
if (displayName == null) {
displayName = decamelizeClassName(ClassUtils.getShortClassName(clazz));
}
response.put("displayName", displayName);
String tags = oci.tags.get("@tags");
if (tags != null) {
JSONArray tagArray = new JSONArray();
for (String tag : StringUtils.split(tags, ',')) {
tagArray.put(tag.trim().toLowerCase());
}
response.put("tags", tagArray);
}
String doclink = oci.tags.get("@doclink");
if (doclink != null) {
response.put("doclink", doclink + "?" + getDocName(clazz));
} else if (clazz.startsWith("com.datatorrent.lib.")
|| clazz.startsWith("com.datatorrent.contrib.")) {
response.put("doclink", DT_OPERATOR_DOCLINK_PREFIX + "?" + getDocName(clazz));
}
}
} catch (JSONException ex) {
throw new RuntimeException(ex);
}
return response;
} else {
throw new UnsupportedOperationException();
}
}