in finalizer warnings, use a better exception - NOT Exception()

finalizer warnings should use a more descriptive exception instead of
Exception() so it is clearer to the developers as to why this
warning is output.

core/java/android/database/sqlite/DatabaseObjectNotClosedException.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.database.sqlite;
+
+/**
+ * An exception that indicates that garbage-collector is finalizing a database object
+ * that is not explicitly closed
+ */
+public class DatabaseObjectNotClosedException extends RuntimeException
+{
+    private static final String s = "Application did not close the cursor or database object " +
+            "that was opened here";
+
+    public DatabaseObjectNotClosedException()
+    {
+        super(s);
+    }
+}

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

@@ -56,7 +56,7 @@ import android.util.Log;
     /* package */ SQLiteCompiledSql(SQLiteDatabase db, String sql) {
         mDatabase = db;
         mSqlStmt = sql;
-        mStackTrace = new Exception().fillInStackTrace();
+        mStackTrace = new DatabaseObjectNotClosedException().fillInStackTrace();
         this.nHandle = db.mNativeHandle;
         compile(sql, true);
     }

core/java/android/database/sqlite/SQLiteCursor.java

@@ -207,7 +207,7 @@ public class SQLiteCursor extends AbstractWindowedCursor {
             String editTable, SQLiteQuery query) {
         // The AbstractCursor constructor needs to do some setup.
         super();
-        mStackTrace = new Exception().fillInStackTrace();
+        mStackTrace = new DatabaseObjectNotClosedException().fillInStackTrace();
         mDatabase = db;
         mDriver = driver;
         mEditTable = editTable;

core/java/android/database/sqlite/SQLiteDatabase.java

@@ -1749,7 +1749,7 @@ public class SQLiteDatabase extends SQLiteClosable {
         mFlags = flags;
         mPath = path;
         mSlowQueryThreshold = SystemProperties.getInt(LOG_SLOW_QUERIES_PROPERTY, -1);
-        mStackTrace = new Exception().fillInStackTrace();
+        mStackTrace = new DatabaseObjectNotClosedException().fillInStackTrace();
         mFactory = factory;
         dbopen(mPath, mFlags);
         if (SQLiteDebug.DEBUG_SQL_CACHE) {