added panicModeRemoveAllObjects()

Author: greenrobot

objectbox-java/src/main/java/io/objectbox/Box.java

@@ -29,6 +29,7 @@
 import javax.annotation.concurrent.ThreadSafe;
 
 import io.objectbox.annotation.apihint.Beta;
+import io.objectbox.annotation.apihint.Experimental;
 import io.objectbox.annotation.apihint.Internal;
 import io.objectbox.annotation.apihint.Temporary;
 import io.objectbox.exception.DbException;
@@ -468,6 +469,7 @@ public void remove(T object) {
  /**
  * Removes (deletes) the given Objects in a single transaction.
  */
+ @SuppressWarnings("Duplicates") // Detected duplicate has different type
  public void remove(@Nullable T... objects) {
  if (objects == null || objects.length == 0) {
  return;
@@ -487,6 +489,7 @@ public void remove(@Nullable T... objects) {
  /**
  * Removes (deletes) the given Objects in a single transaction.
  */
+ @SuppressWarnings("Duplicates") // Detected duplicate has different type
  public void remove(@Nullable Collection<T> objects) {
  if (objects == null || objects.isEmpty()) {
  return;
@@ -516,6 +519,17 @@ public void removeAll() {
  }
  }
 
+ /**
+ * WARNING: this method should generally be avoided as it is not transactional and thus may leave the DB in an
+ * inconsistent state. It may be the a last resort option to recover from a full DB.
+ * Like removeAll(), it removes all objects, returns the count of objects removed.
+ * Logs progress using warning log level.
+ */
+ @Experimental
+ public long panicModeRemoveAll() {
+ return store.panicModeRemoveAllObjects(getEntityInfo().getEntityId());
+ }
+
  /**
  * Returns a builder to create queries for Object matching supplied criteria.
  */

objectbox-java/src/main/java/io/objectbox/BoxStore.java

@@ -135,9 +135,12 @@ static native void nativeRegisterCustomType(long store, int entityId, int proper
  public static native boolean isObjectBrowserAvailable();
 
  public static String getVersion() {
+
  return VERSION;
  }
 
+ native long nativePanicModeRemoveAllObjects(long store, int entityId);
+
  private final File directory;
  private final String canonicalPath;
  private final long handle;
@@ -910,4 +913,8 @@ void setDebugFlags(int debugFlags) {
  nativeSetDebugFlags(handle, debugFlags);
  }
 
+ long panicModeRemoveAllObjects(int entityId) {
+ return nativePanicModeRemoveAllObjects(handle, entityId);
+ }
+
 }

tests/objectbox-java-test/src/main/java/io/objectbox/BoxTest.java

@@ -136,6 +136,14 @@ public void testRemoveMany() {
  assertEquals(0, box.count());
  }
 
+ @Test
+ public void testPanicModeRemoveAllObjects() {
+ assertEquals(0, box.panicModeRemoveAll());
+ putTestEntities(7);
+ assertEquals(7, box.panicModeRemoveAll());
+ assertEquals(0, box.count());
+ }
+
  @Test
  public void testRunInTx() {
  final long[] counts = {0, 0};