Remove IntentStore access in IntentUpdate subclasses

Change-Id: I923c62f1d34dc2c911323f11990de5c9788bf655

@@ -27,16 +27,16 @@ class InstallRequest implements IntentUpdate {
     // TODO: define an interface and use it, instead of IntentManager
     private final IntentManager intentManager;
     private final IntentData pending;
+    private final Optional<IntentData> current;
 
-    InstallRequest(IntentManager intentManager, IntentData intentData) {
+    InstallRequest(IntentManager intentManager, IntentData intentData, Optional<IntentData> current) {
         this.intentManager = checkNotNull(intentManager);
         this.pending = checkNotNull(intentData);
+        this.current = checkNotNull(current);
     }
 
     @Override
     public Optional<IntentUpdate> execute() {
-        //FIXME... store hack
-        IntentData current = intentManager.store.getIntentData(pending.key());
-        return Optional.of(new Compiling(intentManager, pending, current));
+        return Optional.of(new Compiling(intentManager, pending, current.orElse(null)));
     }
 }

@@ -489,19 +489,16 @@ public class IntentManager
     }
 
     private IntentUpdate createIntentUpdate(IntentData intentData) {
+        IntentData current = store.getIntentData(intentData.key());
         switch (intentData.state()) {
             case INSTALL_REQ:
-                return new InstallRequest(this, intentData);
+                return new InstallRequest(this, intentData, Optional.ofNullable(current));
             case WITHDRAW_REQ:
-                return new WithdrawRequest(this, intentData);
-            // fallthrough
-            case COMPILING:
-            case INSTALLING:
-            case INSTALLED:
-            case RECOMPILING:
-            case WITHDRAWING:
-            case WITHDRAWN:
-            case FAILED:
+                if (current == null) {
+                    return new Withdrawn(current, WITHDRAWN);
+                } else {
+                    return new WithdrawRequest(this, intentData, current);
+                }
             default:
                 // illegal state
                 return new CompilingFailed(intentData);

@@ -20,7 +20,6 @@ import org.onosproject.net.intent.IntentData;
 import java.util.Optional;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-import static org.onosproject.net.intent.IntentState.WITHDRAWN;
 
 /**
  * Represents a phase of requesting a withdraw of an intent.
@@ -30,19 +29,16 @@ class WithdrawRequest implements IntentUpdate {
     // TODO: define an interface and use it, instead of IntentManager
     private final IntentManager intentManager;
     private final IntentData pending;
+    private final IntentData current;
 
-    WithdrawRequest(IntentManager intentManager, IntentData intentData) {
+    WithdrawRequest(IntentManager intentManager, IntentData intentData, IntentData current) {
         this.intentManager = checkNotNull(intentManager);
         this.pending = checkNotNull(intentData);
+        this.current = checkNotNull(current);
     }
 
     @Override
     public Optional<IntentUpdate> execute() {
-        //FIXME need store interface
-        IntentData current = intentManager.store.getIntentData(pending.key());
-        if (current == null) {
-            return Optional.of(new Withdrawn(pending, WITHDRAWN));
-        }
         //TODO perhaps we want to validate that the pending and current are the
         // same version i.e. they are the same
         // Note: this call is not just the symmetric version of submit