Instance identifier support

[controller.git] / opendaylight / md-sal / sal-rest-connector / src / main / java / org / opendaylight / controller / sal / rest / impl / JsonReader.java

diff --git a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/JsonReader.java b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/JsonReader.java
index a0acaf156facb47a74f9e672f1514277f78fc4a4..3fc402ca3af95b052099a66345b0bafde524ae79 100644 (file)
--- a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/JsonReader.java
+++ b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/JsonReader.java
@@ -6,7 +6,10 @@ import java.net.URI;
 import java.util.Map.Entry;
 import java.util.Set;
 
+import org.opendaylight.controller.sal.rest.impl.RestUtil.PrefixMapingFromJson;
 import org.opendaylight.controller.sal.restconf.impl.CompositeNodeWrapper;
+import org.opendaylight.controller.sal.restconf.impl.EmptyNodeWrapper;
+import org.opendaylight.controller.sal.restconf.impl.IdentityValuesDTO;
 import org.opendaylight.controller.sal.restconf.impl.SimpleNodeWrapper;
 
 import com.google.common.collect.Lists;
@@ -19,12 +22,12 @@ class JsonReader {
 
     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");
@@ -41,61 +44,81 @@ class JsonReader {
                     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(":");
+        // it is not "moduleName:localName"
+        if (moduleNameAndLocalName.length != 2) {
             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(":");
+        // it is not "moduleName:localName"
+        if (moduleNameAndLocalName.length != 2) {
             return jsonElementName;
         }
-        return jsonElementName.substring(indexOfDelimeter + 1, jsonElementName.length());
+        return moduleNameAndLocalName[1];
+    }
+
+    private Object resolveValueOfElement(String value) {
+        // it could be instance-identifier Built-In Type
+        if (value.startsWith("/")) {
+            IdentityValuesDTO resolvedValue = RestUtil.asInstanceIdentifier(value, new PrefixMapingFromJson());
+            if (resolvedValue != null) {
+                return resolvedValue;
+            }
+        }
+        // it could be identityref Built-In Type
+        URI namespace = getNamespaceFor(value);
+        if (namespace != null) {
+            return new IdentityValuesDTO(namespace.toString(), getLocalNameFor(value), null);
+        }
+        // it is not "prefix:value" but just "value"
+        return value;
     }
 
 }