add warning in finalizer. deprecate protected members.

finalizer shoudl not be called ever. add a warning to say that.
adeprecate a few members in SQLiteProgram.java. they should not
have had protected access level. shoudl be package.

core/java/android/database/sqlite/SQLiteCompiledSql.java

@@ -28,6 +28,8 @@ import android.util.Log;
  */
 /* package */ class SQLiteCompiledSql {
 
+    private static final String TAG = "SQLiteCompiledSql";
+
     /** The database this program is compiled against. */
     /* package */ SQLiteDatabase mDatabase;
 
@@ -44,11 +46,17 @@ import android.util.Log;
      */
     /* package */ int nStatement = 0;
 
+    /** the following are for debugging purposes */
+    private String mSqlStmt = null;
+    private Throwable mStackTrace = null;
+
     /** when in cache and is in use, this member is set */
     private boolean mInUse = false;
 
     /* package */ SQLiteCompiledSql(SQLiteDatabase db, String sql) {
         mDatabase = db;
+        mSqlStmt = sql;
+        mStackTrace = new Exception().fillInStackTrace();
         this.nHandle = db.mNativeHandle;
         compile(sql, true);
     }
@@ -115,8 +123,15 @@ import android.util.Log;
      * Make sure that the native resource is cleaned up.
      */
     @Override
-    protected void finalize() {
-        releaseSqlStatement();
+    protected void finalize() throws Throwable {
+        try {
+            if (nStatement == 0) return;
+            // finalizer should NEVER get called
+            Log.w(TAG, "finalizer should never be called. sql: " + mSqlStmt, mStackTrace);
+            releaseSqlStatement();
+        } finally {
+            super.finalize();
+        }
     }
 
     /**

core/java/android/database/sqlite/SQLiteProgram.java

@@ -21,7 +21,10 @@ package android.database.sqlite;
  */
 public abstract class SQLiteProgram extends SQLiteClosable {
 
-    /** The database this program is compiled against. */
+    /** The database this program is compiled against.
+     * @deprecated do not use this
+     */
+    @Deprecated
     protected SQLiteDatabase mDatabase;
 
     /** The SQL used to create this query */
@@ -30,7 +33,9 @@ public abstract class SQLiteProgram extends SQLiteClosable {
     /**
      * Native linkage, do not modify. This comes from the database and should not be modified
      * in here or in the native code.
+     * @deprecated do not use this
      */
+    @Deprecated
     protected int nHandle = 0;
 
     /**
@@ -41,7 +46,9 @@ public abstract class SQLiteProgram extends SQLiteClosable {
     /**
      * SQLiteCompiledSql statement id is populated with the corresponding object from the above
      * member. This member is used by the native_bind_* methods
+     * @deprecated do not use this
      */
+    @Deprecated
     protected int nStatement = 0;
 
     /* package */ SQLiteProgram(SQLiteDatabase db, String sql) {