Support validate while open.

Author: greenrobot-team

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

@@ -181,11 +181,6 @@ static native void nativeRegisterCustomType(long store, int entityId, int proper
 
     static native boolean nativeIsObjectBrowserAvailable();
 
-    /**
-     * Validates up to {@code pageLimit} pages of the store. Set {@code checkLeafLevel} to check leafs, too.
-     * Throws StorageException if validation fails.
-     * Throws DbFileCorruptException or DbPagesCorruptException if the DB is actually inconsistent (corrupt).
-     */
     native long nativeValidate(long store, long pageLimit, boolean checkLeafLevel);
 
     public static boolean isObjectBrowserAvailable() {
@@ -951,6 +946,19 @@ public String diagnose() {
         return nativeDiagnose(handle);
     }
 
+    /**
+     * Validates up to {@code pageLimit} pages of the store. Set {@code checkLeafLevel} to check leafs, too.
+     * Returns the number of pages validated.
+     * Throws StorageException if validation fails.
+     * Throws DbFileCorruptException or DbPagesCorruptException if the DB is actually inconsistent (corrupt).
+     */
+    public long validate(long pageLimit, boolean checkLeafLevel) {
+        if (pageLimit < 0) {
+            throw new IllegalArgumentException("pageLimit must be zero or positive");
+        }
+        return nativeValidate(handle, pageLimit, checkLeafLevel);
+    }
+
     public int cleanStaleReadTransactions() {
         return nativeCleanStaleReadTransactions(handle);
     }

tests/objectbox-java-test/src/test/java/io/objectbox/BoxStoreTest.java

@@ -215,4 +215,10 @@ private Callable<String> createTestCallable(final int[] countHolder) {
         };
     }
 
+    @Test
+    public void validate() {
+        putTestEntities(10);
+        long validated = store.validate(0, true);
+        assertEquals(validated, 2);
+    }
 }