Implement a cancelation mechanism for queries.

Added new API to enable cancelation of SQLite and content provider
queries by means of a CancelationSignal object.  The application
creates a CancelationSignal object and passes it as an argument
to the query.  The cancelation signal can then be used to cancel
the query while it is executing.

If the cancelation signal is raised before the query is executed,
then it is immediately terminated.

Change-Id: If2c76e9a7e56ea5e98768b6d4f225f0a1ca61c61

1 files changed, 8 insertions, 2 deletions

diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java
index c91a3bf..c64ab65 100644
--- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java
@@ -19,6 +19,7 @@ package com.android.layoutlib.bridge.android;
 import android.content.ContentProviderOperation;
 import android.content.ContentProviderResult;
 import android.content.ContentValues;
+import android.content.ICancelationSignal;
 import android.content.IContentProvider;
 import android.content.OperationApplicationException;
 import android.content.res.AssetFileDescriptor;
@@ -90,8 +91,8 @@ public final class BridgeContentProvider implements IContentProvider {
     }
 
     @Override
-    public Cursor query(Uri arg0, String[] arg1, String arg2, String[] arg3, String arg4)
-            throws RemoteException {
+    public Cursor query(Uri arg0, String[] arg1, String arg2, String[] arg3, String arg4,
+            ICancelationSignal arg5) throws RemoteException {
         // TODO Auto-generated method stub
         return null;
     }
@@ -122,4 +123,9 @@ public final class BridgeContentProvider implements IContentProvider {
         return null;
     }
 
+    @Override
+    public ICancelationSignal createCancelationSignal() throws RemoteException {
+        // TODO Auto-generated method stub
+        return null;
+    }
 }