Examples of org.rocksdb.RocksIterator.key()

org.rocksdb.RocksIterator.key()

Return the key for the current entry. The underlying storage for the returned slice is valid only until the next modification of the iterator.

REQUIRES: {@link #isValid()}
@return key for the current entry.


      iterator = db.newIterator();


      iterator.seekToFirst();
      assertThat(iterator.isValid()).isTrue();
      assertThat(iterator.key()).isEqualTo("key1".getBytes());
      assertThat(iterator.value()).isEqualTo("value1".getBytes());
      iterator.next();
      assertThat(iterator.isValid()).isTrue();
      assertThat(iterator.key()).isEqualTo("key2".getBytes());
      assertThat(iterator.value()).isEqualTo("value2".getBytes());

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      assertThat(iterator.isValid()).isTrue();
      assertThat(iterator.key()).isEqualTo("key1".getBytes());
      assertThat(iterator.value()).isEqualTo("value1".getBytes());
      iterator.next();
      assertThat(iterator.isValid()).isTrue();
      assertThat(iterator.key()).isEqualTo("key2".getBytes());
      assertThat(iterator.value()).isEqualTo("value2".getBytes());
      iterator.next();
      assertThat(iterator.isValid()).isFalse();
      iterator.seekToLast();
      iterator.prev();

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      iterator.next();
      assertThat(iterator.isValid()).isFalse();
      iterator.seekToLast();
      iterator.prev();
      assertThat(iterator.isValid()).isTrue();
      assertThat(iterator.key()).isEqualTo("key1".getBytes());
      assertThat(iterator.value()).isEqualTo("value1".getBytes());
      iterator.seekToFirst();
      iterator.seekToLast();
      assertThat(iterator.isValid()).isTrue();
      assertThat(iterator.key()).isEqualTo("key2".getBytes());

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      assertThat(iterator.key()).isEqualTo("key1".getBytes());
      assertThat(iterator.value()).isEqualTo("value1".getBytes());
      iterator.seekToFirst();
      iterator.seekToLast();
      assertThat(iterator.isValid()).isTrue();
      assertThat(iterator.key()).isEqualTo("key2".getBytes());
      assertThat(iterator.value()).isEqualTo("value2".getBytes());
      iterator.status();
    } finally {
      if (db != null) {
        db.close();

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