defaultRheakvStore-part2.java

    /**
     * Returns a heap-allocated iterator over the contents of the
     * database.
     * <p>
     * Caller should close the iterator when it is no longer needed.
     * The returned iterator should be closed before this db is closed.
     * <p>
     * <pre>
     *     KVIterator it = unsafeLocalIterator();
     *     try {
     *         // do something
     *     } finally {
     *         it.close();
     *     }
     * <pre/>
     */
    public KVIterator unsafeLocalIterator() {
        checkState();
        if (this.pdClient instanceof RemotePlacementDriverClient) {
            throw new UnsupportedOperationException("unsupported operation on multi-region");
        }
        if (this.storeEngine == null) {
            throw new IllegalStateException("current node do not have store engine");
        }
        return this.storeEngine.getRawKVStore().localIterator();
    }