Package org.apache.commons.configuration2.sync

# Enum NoOpSynchronizer

java.lang.Object
java.lang.Enum<NoOpSynchronizer>
org.apache.commons.configuration2.sync.NoOpSynchronizer

All Implemented Interfaces:
  `Serializable`, `Comparable<NoOpSynchronizer>`, `Synchronizer`

public enum NoOpSynchronizer extends Enum<NoOpSynchronizer> implements Synchronizer

An implementation of the `Synchronizer` interface which does not perform any synchronization.

This class is the option of choice for applications that do not access configuration concurrently. All methods required by the `Synchronizer` interface are just empty dummies. Therefore, this class does not have any synchronization overhead. Of course, configurations using this `Synchronizer` implementation are not thread-safe!

Implementation note: This class is an enumeration because only a single instance needs to exist. This instance can be shared between arbitrary configurations.

Since:
  2.0

- ## Enum Constant Summary

  Enum Constants
  Enum Constant
  Description
  `INSTANCE`
  The single shared instance of this class.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `beginRead()`
  Notifies this `Synchronizer` that the current thread is going to start a read operation on the managed configuration.
  `void`
  `beginWrite()`
  Notifies this `Synchronizer` that the current thread is going to start a write operation on the managed configuration.
  `void`
  `endRead()`
  Notifies this `Synchronizer` that the current thread has finished its read operation.
  `void`
  `endWrite()`
  Notifies this `Synchronizer` that the current thread has finished its write operation.
  `static NoOpSynchronizer`
  `valueOf(String name)`
  Returns the enum constant of this type with the specified name.
  `static NoOpSynchronizer[]`
  `values()`
  Returns an array containing the constants of this enum type, in the order they are declared.

  ### Methods inherited from class java.lang.Enum

  `clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

  ### Methods inherited from class java.lang.Object

  `getClass, notify, notifyAll, wait, wait, wait`

- ## Enum Constant Details

  - ### INSTANCE

    public static final NoOpSynchronizer INSTANCE
    The single shared instance of this class.

- ## Method Details

  - ### values

    public static NoOpSynchronizer[] values()
    Returns an array containing the constants of this enum type, in the order they are declared.
    Returns:
      an array containing the constants of this enum type, in the order they are declared

  - ### valueOf

    public static NoOpSynchronizer valueOf(String name)
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    Parameters:
      `name` - the name of the enum constant to be returned.
    Returns:
      the enum constant with the specified name
    Throws:
      `IllegalArgumentException` - if this enum type has no constant with the specified name
      `NullPointerException` - if the argument is null

  - ### beginRead

    public void beginRead()
    Description copied from interface: `Synchronizer`
    Notifies this `Synchronizer` that the current thread is going to start a read operation on the managed configuration. This call can block if a concrete implementation decides that the thread has to wait until a specific condition is fulfilled.
    Specified by:
      `beginRead` in interface `Synchronizer`

  - ### beginWrite

    public void beginWrite()
    Description copied from interface: `Synchronizer`
    Notifies this `Synchronizer` that the current thread is going to start a write operation on the managed configuration. This call may block. For instance, a concrete implementation may suspend the thread until all read operations currently active are finished,
    Specified by:
      `beginWrite` in interface `Synchronizer`

  - ### endRead

    public void endRead()
    Description copied from interface: `Synchronizer`
    Notifies this `Synchronizer` that the current thread has finished its read operation. This may cause other waiting threads to be granted access to the managed configuration.
    Specified by:
      `endRead` in interface `Synchronizer`

  - ### endWrite

    public void endWrite()
    Description copied from interface: `Synchronizer`
    Notifies this `Synchronizer` that the current thread has finished its write operation. This may cause other waiting threads to be granted access to the managed configuration.
    Specified by:
      `endWrite` in interface `Synchronizer`