import java.util.Set;
import org.opendaylight.controller.sal.restconf.impl.CompositeNodeWrapper;
+import org.opendaylight.controller.sal.restconf.impl.EmptyNodeWrapper;
import org.opendaylight.controller.sal.restconf.impl.SimpleNodeWrapper;
+import org.opendaylight.controller.sal.restconf.impl.IdentityValuesDTO;
import com.google.common.collect.Lists;
import com.google.gson.JsonElement;
public CompositeNodeWrapper read(InputStream entityStream) throws UnsupportedFormatException {
JsonParser parser = new JsonParser();
-
+
JsonElement rootElement = parser.parse(new InputStreamReader(entityStream));
if (!rootElement.isJsonObject()) {
throw new UnsupportedFormatException("Root element of Json has to be Object");
}
-
+
Set<Entry<String, JsonElement>> entrySetsOfRootJsonObject = rootElement.getAsJsonObject().entrySet();
if (entrySetsOfRootJsonObject.size() != 1) {
throw new UnsupportedFormatException("Json Object should contain one element");
if (firstElementInArray.isJsonObject()) {
return createStructureWithRoot(firstElementName, firstElementInArray.getAsJsonObject());
}
- throw new UnsupportedFormatException("Array as the first element in Json Object can have only Object element");
+ throw new UnsupportedFormatException(
+ "Array as the first element in Json Object can have only Object element");
}
}
- throw new UnsupportedFormatException("First element in Json Object has to be \"Object\" or \"Array with one Object element\". Other scenarios are not supported yet.");
+ throw new UnsupportedFormatException(
+ "First element in Json Object has to be \"Object\" or \"Array with one Object element\". Other scenarios are not supported yet.");
}
}
-
+
private CompositeNodeWrapper createStructureWithRoot(String rootObjectName, JsonObject rootObject) {
- CompositeNodeWrapper firstNode = new CompositeNodeWrapper(getNamespaceFrom(rootObjectName),
- getLocalNameFrom(rootObjectName));
+ CompositeNodeWrapper firstNode = new CompositeNodeWrapper(getNamespaceFor(rootObjectName),
+ getLocalNameFor(rootObjectName));
for (Entry<String, JsonElement> childOfFirstNode : rootObject.entrySet()) {
addChildToParent(childOfFirstNode.getKey(), childOfFirstNode.getValue(), firstNode);
}
return firstNode;
}
-
+
private void addChildToParent(String childName, JsonElement childType, CompositeNodeWrapper parent) {
if (childType.isJsonObject()) {
- CompositeNodeWrapper child = new CompositeNodeWrapper(getNamespaceFrom(childName),
- getLocalNameFrom(childName));
+ CompositeNodeWrapper child = new CompositeNodeWrapper(getNamespaceFor(childName),
+ getLocalNameFor(childName));
parent.addValue(child);
for (Entry<String, JsonElement> childOfChild : childType.getAsJsonObject().entrySet()) {
addChildToParent(childOfChild.getKey(), childOfChild.getValue(), child);
}
} else if (childType.isJsonArray()) {
- for (JsonElement childOfChildType : childType.getAsJsonArray()) {
- addChildToParent(childName, childOfChildType, parent);
+ if (childType.getAsJsonArray().size() == 1 && childType.getAsJsonArray().get(0).isJsonNull()) {
+ parent.addValue(new EmptyNodeWrapper(getNamespaceFor(childName), getLocalNameFor(childName)));
+
+ } else {
+ for (JsonElement childOfChildType : childType.getAsJsonArray()) {
+ addChildToParent(childName, childOfChildType, parent);
+ }
}
} else if (childType.isJsonPrimitive()) {
JsonPrimitive childPrimitive = childType.getAsJsonPrimitive();
String value = childPrimitive.getAsString();
- SimpleNodeWrapper child = null;
- if (value.equals("[null]")) {
- child = new SimpleNodeWrapper(getNamespaceFrom(childName), getLocalNameFrom(childName), null);
- } else {
- child = new SimpleNodeWrapper(getNamespaceFrom(childName), getLocalNameFrom(childName), value);
- }
- parent.addValue(child);
+ parent.addValue(new SimpleNodeWrapper(getNamespaceFor(childName), getLocalNameFor(childName),
+ resolveValueOfElement(value)));
}
}
- private URI getNamespaceFrom(String jsonElementName) {
- int indexOfDelimeter = jsonElementName.lastIndexOf(':');
- if (indexOfDelimeter == -1) {
+ private URI getNamespaceFor(String jsonElementName) {
+ String[] moduleNameAndLocalName = jsonElementName.split(":");
+ if (moduleNameAndLocalName.length != 2) { // it is not "moduleName:localName"
return null;
}
- return URI.create(jsonElementName.substring(0, indexOfDelimeter));
+ return URI.create(moduleNameAndLocalName[0]);
}
- private String getLocalNameFrom(String jsonElementName) {
- int indexOfDelimeter = jsonElementName.lastIndexOf(':');
- if (indexOfDelimeter == -1) {
+ private String getLocalNameFor(String jsonElementName) {
+ String[] moduleNameAndLocalName = jsonElementName.split(":");
+ if (moduleNameAndLocalName.length != 2) { // it is not "moduleName:localName"
return jsonElementName;
}
- return jsonElementName.substring(indexOfDelimeter + 1, jsonElementName.length());
+ return moduleNameAndLocalName[1];
+ }
+
+ /**
+ * @param value
+ * value of json element
+ * @return if value is "moduleName:localName" then {@link IdentityValuesDTO} else
+ * the same string as parameter "value"
+ */
+ private Object resolveValueOfElement(String value) {
+ URI namespace = getNamespaceFor(value);
+ return namespace == null ? value : new IdentityValuesDTO(namespace.toString(), getLocalNameFor(value), null);
}
}