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## com.sleepycat.je
Class SecondaryCursor

    java.lang.Object
      com.sleepycat.je.Cursor
          com.sleepycat.je.SecondaryCursor

    public class SecondaryCursor

extends Cursor

A database cursor for a secondary database. Cursors are not thread safe and the application is responsible for coordinating any multithreaded access to a single cursor object.

Secondary cursors are returned by `SecondaryDatabase.openCursor` and `SecondaryDatabase.openSecondaryCursor`. The distinguishing characteristics of a secondary cursor are:

- Direct calls to `put()` methods on a secondary cursor are prohibited.
- The `delete()` method of a secondary cursor will delete the primary record and as well as all its associated secondary records.
- Calls to all get methods will return the data from the associated primary database.
- Additional get method signatures are provided to return the primary key in an additional pKey parameter.
- Calls to `dup(boolean)` will return a `SecondaryCursor`.
- The `dupSecondary(boolean)` method is provided to return a `SecondaryCursor` that doesn't require casting.

To obtain a secondary cursor with default attributes:

>          SecondaryCursor cursor = myDb.openSecondaryCursor(txn, null);

To customize the attributes of a cursor, use a CursorConfig object.

>          CursorConfig config = new CursorConfig();
>          config.setDirtyRead(true);
>          SecondaryCursor cursor = myDb.openSecondaryCursor(txn, config);

Method Summary
`OperationStatus` | `delete()` Delete the key/data pair to which the cursor refers from the primary database and all secondary indices.
`Cursor` | `dup(boolean samePosition)` Returns a new `SecondaryCursor` for the same transaction as the original cursor.
`SecondaryCursor` | `dupSecondary(boolean samePosition)` Returns a new copy of the cursor as a `SecondaryCursor`.
`OperationStatus` | `getCurrent(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Returns the key/data pair to which the cursor refers.
`OperationStatus` | `getCurrent(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Returns the key/data pair to which the cursor refers.
`OperationStatus` | `getFirst(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the first key/data pair of the database, and return that pair.
`OperationStatus` | `getFirst(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the first key/data pair of the database, and return that pair.
`OperationStatus` | `getLast(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the last key/data pair of the database, and return that pair.
`OperationStatus` | `getLast(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the last key/data pair of the database, and return that pair.
`OperationStatus` | `getNext(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the next key/data pair and return that pair.
`OperationStatus` | `getNext(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the next key/data pair and return that pair.
`OperationStatus` | `getNextDup(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` If the next key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the next key/data pair of the database and return that pair.
`OperationStatus` | `getNextDup(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` If the next key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the next key/data pair of the database and return that pair.
`OperationStatus` | `getNextNoDup(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the next non-duplicate key/data pair and return that pair.
`OperationStatus` | `getNextNoDup(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the next non-duplicate key/data pair and return that pair.
`OperationStatus` | `getPrev(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the previous key/data pair and return that pair.
`OperationStatus` | `getPrev(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the previous key/data pair and return that pair.
`OperationStatus` | `getPrevDup(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` If the previous key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the previous key/data pair of the database and return that pair.
`OperationStatus` | `getPrevDup(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` If the previous key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the previous key/data pair of the database and return that pair.
`OperationStatus` | `getPrevNoDup(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the previous non-duplicate key/data pair and return that pair.
`OperationStatus` | `getPrevNoDup(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the previous non-duplicate key/data pair and return that pair.
`Database` | `getPrimaryDatabase()` Returns the primary `Database` associated with this cursor.
`OperationStatus` | `getSearchBoth(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the specified secondary and primary key, where both the primary and secondary key items must match.
`OperationStatus` | `getSearchBoth(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` This operation is not allowed with this method signature.
`OperationStatus` | `getSearchBothRange(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the specified secondary key and closest matching primary key of the database.
`OperationStatus` | `getSearchBothRange(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` This operation is not allowed with this method signature.
`OperationStatus` | `getSearchKey(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the given key of the database, and return the datum associated with the given key.
`OperationStatus` | `getSearchKey(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the given key of the database, and return the datum associated with the given key.
`OperationStatus` | `getSearchKeyRange(DatabaseEntry key, DatabaseEntry pKey, DatabaseEntry data, LockMode lockMode)` Move the cursor to the closest matching key of the database, and return the data item associated with the matching key.
`OperationStatus` | `getSearchKeyRange(DatabaseEntry key, DatabaseEntry data, LockMode lockMode)` Move the cursor to the closest matching key of the database, and return the data item associated with the matching key.
`OperationStatus` | `put(DatabaseEntry key, DatabaseEntry data)` This operation is not allowed on a secondary database.
`OperationStatus` | `putCurrent(DatabaseEntry data)` This operation is not allowed on a secondary database.
`OperationStatus` | `putNoDupData(DatabaseEntry key, DatabaseEntry data)` This operation is not allowed on a secondary database.
`OperationStatus` | `putNoOverwrite(DatabaseEntry key, DatabaseEntry data)` This operation is not allowed on a secondary database.

Methods inherited from class com.sleepycat.je.Cursor
`close, count, getCacheMode, getConfig, getDatabase, setCacheMode`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### getPrimaryDatabase

    public Database getPrimaryDatabase()

  Returns the primary `Database` associated with this cursor.

  Calling this method is the equivalent of the following expression:

  >              ((SecondaryDatabase) this.getDatabase()).getPrimaryDatabase()

  Returns:
    The primary `Database` associated with this cursor.

### dup

    public Cursor dup(boolean samePosition)
               throws DatabaseException

  Returns a new `SecondaryCursor` for the same transaction as the original cursor.

  Overrides:
    `dup` in class `Cursor`
  Parameters:
    `samePosition` - If true, the newly created cursor is initialized to refer to the same position in the database as the original cursor (if any) and hold the same locks (if any). If false, or the original cursor does not hold a database position and locks, the returned cursor is uninitialized and will behave like a newly created cursor.
  Returns:
    A new cursor with the same transaction and locker ID as the original cursor.
  Throws:
    `DatabaseException` - if a failure occurs.

### dupSecondary

    public SecondaryCursor dupSecondary(boolean samePosition)
                                 throws DatabaseException

  Returns a new copy of the cursor as a `SecondaryCursor`.

  Calling this method is the equivalent of calling `dup(boolean)` and casting the result to `SecondaryCursor`.

  Throws:
    `DatabaseException`
  See Also:
    `dup(boolean)`

### delete

    public OperationStatus delete()
                           throws DatabaseException

  Delete the key/data pair to which the cursor refers from the primary database and all secondary indices.

  This method behaves as if `Database.delete(com.sleepycat.je.Transaction, com.sleepycat.je.DatabaseEntry)` were called for the primary database, using the primary key obtained via the secondary key parameter.

  The cursor position is unchanged after a delete, and subsequent calls to cursor functions expecting the cursor to refer to an existing key will fail.

  Overrides:
    `delete` in class `Cursor`
  Returns:
    an OperationStatus for the operation.
  Throws:
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `DatabaseException` - if a failure occurs.

### put

    public OperationStatus put(DatabaseEntry key,
                               DatabaseEntry data)
                        throws DatabaseException

  This operation is not allowed on a secondary database. `UnsupportedOperationException` will always be thrown by this method. The corresponding method on the primary database should be used instead.

  Overrides:
    `put` in class `Cursor`
  Parameters:
    `key` - the key `DatabaseEntry` operated on.
    `data` - the data `DatabaseEntry` stored.
  Returns:
    an OperationStatus for the operation.
  Throws:
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `DatabaseException` - if a failure occurs.

### putNoOverwrite

    public OperationStatus putNoOverwrite(DatabaseEntry key,
                                          DatabaseEntry data)
                                   throws DatabaseException

  This operation is not allowed on a secondary database. `UnsupportedOperationException` will always be thrown by this method. The corresponding method on the primary database should be used instead.

  Overrides:
    `putNoOverwrite` in class `Cursor`
  Parameters:
    `key` - the key `DatabaseEntry` operated on.
    `data` - the data `DatabaseEntry` stored.
  Returns:
    an OperationStatus for the operation.
  Throws:
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `DatabaseException` - if a failure occurs.

### putNoDupData

    public OperationStatus putNoDupData(DatabaseEntry key,
                                        DatabaseEntry data)
                                 throws DatabaseException

  This operation is not allowed on a secondary database. `UnsupportedOperationException` will always be thrown by this method. The corresponding method on the primary database should be used instead.

  Overrides:
    `putNoDupData` in class `Cursor`
  Parameters:
    `key` - the key `DatabaseEntry` operated on.
    `data` - the data `DatabaseEntry` stored.
  Returns:
    an OperationStatus for the operation.
  Throws:
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `DatabaseException` - if a failure occurs.

### putCurrent

    public OperationStatus putCurrent(DatabaseEntry data)
                               throws DatabaseException

  This operation is not allowed on a secondary database. `UnsupportedOperationException` will always be thrown by this method. The corresponding method on the primary database should be used instead.

  Overrides:
    `putCurrent` in class `Cursor`
  Parameters:
    `data` - - the data DatabaseEntry stored.
  Returns:
    an OperationStatus for the operation.
  Throws:
    `DeadlockException` - - if the operation was selected to resolve a deadlock.
    `DatabaseException` - - if the old and new data are not equal according to the configured duplicate comparator or default comparator, or if a failure occurs.

### getCurrent

    public OperationStatus getCurrent(DatabaseEntry key,
                                      DatabaseEntry data,
                                      LockMode lockMode)
                               throws DatabaseException

  Returns the key/data pair to which the cursor refers.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getCurrent` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.KEYEMPTY` if the key/pair at the cursor position has been deleted; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getCurrent

    public OperationStatus getCurrent(DatabaseEntry key,
                                      DatabaseEntry pKey,
                                      DatabaseEntry data,
                                      LockMode lockMode)
                               throws DatabaseException

  Returns the key/data pair to which the cursor refers.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.KEYEMPTY` if the key/pair at the cursor position has been deleted; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getFirst

    public OperationStatus getFirst(DatabaseEntry key,
                                    DatabaseEntry data,
                                    LockMode lockMode)
                             throws DatabaseException

  Move the cursor to the first key/data pair of the database, and return that pair. If the first key has duplicate values, the first data item in the set of duplicates is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getFirst` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getFirst

    public OperationStatus getFirst(DatabaseEntry key,
                                    DatabaseEntry pKey,
                                    DatabaseEntry data,
                                    LockMode lockMode)
                             throws DatabaseException

  Move the cursor to the first key/data pair of the database, and return that pair. If the first key has duplicate values, the first data item in the set of duplicates is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getLast

    public OperationStatus getLast(DatabaseEntry key,
                                   DatabaseEntry data,
                                   LockMode lockMode)
                            throws DatabaseException

  Move the cursor to the last key/data pair of the database, and return that pair. If the last key has duplicate values, the last data item in the set of duplicates is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getLast` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getLast

    public OperationStatus getLast(DatabaseEntry key,
                                   DatabaseEntry pKey,
                                   DatabaseEntry data,
                                   LockMode lockMode)
                            throws DatabaseException

  Move the cursor to the last key/data pair of the database, and return that pair. If the last key has duplicate values, the last data item in the set of duplicates is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getNext

    public OperationStatus getNext(DatabaseEntry key,
                                   DatabaseEntry data,
                                   LockMode lockMode)
                            throws DatabaseException

  Move the cursor to the next key/data pair and return that pair. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the first key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the next key/data pair of the database, and that pair is returned. In the presence of duplicate key values, the value of the key may not change.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getNext` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getNext

    public OperationStatus getNext(DatabaseEntry key,
                                   DatabaseEntry pKey,
                                   DatabaseEntry data,
                                   LockMode lockMode)
                            throws DatabaseException

  Move the cursor to the next key/data pair and return that pair. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the first key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the next key/data pair of the database, and that pair is returned. In the presence of duplicate key values, the value of the key may not change.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getNextDup

    public OperationStatus getNextDup(DatabaseEntry key,
                                      DatabaseEntry data,
                                      LockMode lockMode)
                               throws DatabaseException

  If the next key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the next key/data pair of the database and return that pair.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getNextDup` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getNextDup

    public OperationStatus getNextDup(DatabaseEntry key,
                                      DatabaseEntry pKey,
                                      DatabaseEntry data,
                                      LockMode lockMode)
                               throws DatabaseException

  If the next key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the next key/data pair of the database and return that pair.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getNextNoDup

    public OperationStatus getNextNoDup(DatabaseEntry key,
                                        DatabaseEntry data,
                                        LockMode lockMode)
                                 throws DatabaseException

  Move the cursor to the next non-duplicate key/data pair and return that pair. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the first key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the next non-duplicate key of the database, and that key/data pair is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getNextNoDup` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getNextNoDup

    public OperationStatus getNextNoDup(DatabaseEntry key,
                                        DatabaseEntry pKey,
                                        DatabaseEntry data,
                                        LockMode lockMode)
                                 throws DatabaseException

  Move the cursor to the next non-duplicate key/data pair and return that pair. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the first key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the next non-duplicate key of the database, and that key/data pair is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getPrev

    public OperationStatus getPrev(DatabaseEntry key,
                                   DatabaseEntry data,
                                   LockMode lockMode)
                            throws DatabaseException

  Move the cursor to the previous key/data pair and return that pair. If the matching key has duplicate values, the last data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the last key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the previous key/data pair of the database, and that pair is returned. In the presence of duplicate key values, the value of the key may not change.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getPrev` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getPrev

    public OperationStatus getPrev(DatabaseEntry key,
                                   DatabaseEntry pKey,
                                   DatabaseEntry data,
                                   LockMode lockMode)
                            throws DatabaseException

  Move the cursor to the previous key/data pair and return that pair. If the matching key has duplicate values, the last data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the last key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the previous key/data pair of the database, and that pair is returned. In the presence of duplicate key values, the value of the key may not change.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getPrevDup

    public OperationStatus getPrevDup(DatabaseEntry key,
                                      DatabaseEntry data,
                                      LockMode lockMode)
                               throws DatabaseException

  If the previous key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the previous key/data pair of the database and return that pair.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getPrevDup` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getPrevDup

    public OperationStatus getPrevDup(DatabaseEntry key,
                                      DatabaseEntry pKey,
                                      DatabaseEntry data,
                                      LockMode lockMode)
                               throws DatabaseException

  If the previous key/data pair of the database is a duplicate data record for the current key/data pair, move the cursor to the previous key/data pair of the database and return that pair.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getPrevNoDup

    public OperationStatus getPrevNoDup(DatabaseEntry key,
                                        DatabaseEntry data,
                                        LockMode lockMode)
                                 throws DatabaseException

  Move the cursor to the previous non-duplicate key/data pair and return that pair. If the matching key has duplicate values, the last data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the last key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the previous non-duplicate key of the database, and that key/data pair is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getPrevNoDup` in class `Cursor`
  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getPrevNoDup

    public OperationStatus getPrevNoDup(DatabaseEntry key,
                                        DatabaseEntry pKey,
                                        DatabaseEntry data,
                                        LockMode lockMode)
                                 throws DatabaseException

  Move the cursor to the previous non-duplicate key/data pair and return that pair. If the matching key has duplicate values, the last data item in the set of duplicates is returned.

  If the cursor is not yet initialized, move the cursor to the last key/data pair of the database, and return that pair. Otherwise, the cursor is moved to the previous non-duplicate key of the database, and that key/data pair is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key returned as output. Its byte array does not need to be initialized by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getSearchKey

    public OperationStatus getSearchKey(DatabaseEntry key,
                                        DatabaseEntry data,
                                        LockMode lockMode)
                                 throws DatabaseException

  Move the cursor to the given key of the database, and return the datum associated with the given key. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getSearchKey` in class `Cursor`
  Parameters:
    `key` - the secondary key used as input. It must be initialized with a non-null byte array by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getSearchKey

    public OperationStatus getSearchKey(DatabaseEntry key,
                                        DatabaseEntry pKey,
                                        DatabaseEntry data,
                                        LockMode lockMode)
                                 throws DatabaseException

  Move the cursor to the given key of the database, and return the datum associated with the given key. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key used as input. It must be initialized with a non-null byte array by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getSearchKeyRange

    public OperationStatus getSearchKeyRange(DatabaseEntry key,
                                             DatabaseEntry data,
                                             LockMode lockMode)
                                      throws DatabaseException

  Move the cursor to the closest matching key of the database, and return the data item associated with the matching key. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  The returned key/data pair is for the smallest key greater than or equal to the specified key (as determined by the key comparison function), permitting partial key matches and range searches.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Overrides:
    `getSearchKeyRange` in class `Cursor`
  Parameters:
    `key` - the secondary key used as input and returned as output. It must be initialized with a non-null byte array by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getSearchKeyRange

    public OperationStatus getSearchKeyRange(DatabaseEntry key,
                                             DatabaseEntry pKey,
                                             DatabaseEntry data,
                                             LockMode lockMode)
                                      throws DatabaseException

  Move the cursor to the closest matching key of the database, and return the data item associated with the matching key. If the matching key has duplicate values, the first data item in the set of duplicates is returned.

  The returned key/data pair is for the smallest key greater than or equal to the specified key (as determined by the key comparison function), permitting partial key matches and range searches.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key used as input and returned as output. It must be initialized with a non-null byte array by the caller.
    `pKey` - the primary key returned as output. Its byte array does not need to be initialized by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getSearchBoth

    public OperationStatus getSearchBoth(DatabaseEntry key,
                                         DatabaseEntry data,
                                         LockMode lockMode)
                                  throws DatabaseException

  This operation is not allowed with this method signature. `UnsupportedOperationException` will always be thrown by this method. The corresponding method with the `pKey` parameter should be used instead.

  Overrides:
    `getSearchBoth` in class `Cursor`
  Parameters:
    `key` - the key used as input. It must be initialized with a non-null byte array by the caller.
    `data` - the data used as input. It must be initialized with a non-null byte array by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `DatabaseException` - if a failure occurs.

### getSearchBoth

    public OperationStatus getSearchBoth(DatabaseEntry key,
                                         DatabaseEntry pKey,
                                         DatabaseEntry data,
                                         LockMode lockMode)
                                  throws DatabaseException

  Move the cursor to the specified secondary and primary key, where both the primary and secondary key items must match.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key used as input. It must be initialized with a non-null byte array by the caller.
    `pKey` - the primary key used as input. It must be initialized with a non-null byte array by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

### getSearchBothRange

    public OperationStatus getSearchBothRange(DatabaseEntry key,
                                              DatabaseEntry data,
                                              LockMode lockMode)
                                       throws DatabaseException

  This operation is not allowed with this method signature. `UnsupportedOperationException` will always be thrown by this method. The corresponding method with the `pKey` parameter should be used instead.

  Overrides:
    `getSearchBothRange` in class `Cursor`
  Parameters:
    `key` - the key used as input and returned as output. It must be initialized with a non-null byte array by the caller.
    `data` - the data used as input and returned as output. It must be initialized with a non-null byte array by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `DatabaseException` - if a failure occurs.

### getSearchBothRange

    public OperationStatus getSearchBothRange(DatabaseEntry key,
                                              DatabaseEntry pKey,
                                              DatabaseEntry data,
                                              LockMode lockMode)
                                       throws DatabaseException

  Move the cursor to the specified secondary key and closest matching primary key of the database.

  In the case of any database supporting sorted duplicate sets, the returned key/data pair is for the smallest primary key greater than or equal to the specified primary key (as determined by the key comparison function), permitting partial matches and range searches in duplicate data sets.

  If this method fails for any reason, the position of the cursor will be unchanged.

  Parameters:
    `key` - the secondary key used as input and returned as output. It must be initialized with a non-null byte array by the caller.
    `pKey` - the primary key used as input and returned as output. It must be initialized with a non-null byte array by the caller.
    `data` - the primary data returned as output. Its byte array does not need to be initialized by the caller.
    `lockMode` - the locking attributes; if null, default attributes are used.
  Returns:
    `OperationStatus.NOTFOUND` if no matching key/data pair is found; otherwise, `OperationStatus.SUCCESS`.
  Throws:
    `NullPointerException` - if a DatabaseEntry parameter is null or does not contain a required non-null byte array.
    `DeadlockException` - if the operation was selected to resolve a deadlock.
    `IllegalArgumentException` - if an invalid parameter was specified.
    `DatabaseException` - if a failure occurs.

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