org.apache.log

## Class ContextMap

- java.lang.Object
- - org.apache.log.ContextMap

- All Implemented Interfaces:
    Serializable

  Deprecated.
  Will be dropped in 3.3

      @Deprecated
      public final class ContextMap
      extends Object
      implements Serializable

  The ContextMap contains non-hierarchical context information relevant to a particular LogEvent. It may include information such as;
  - user ->fred
  - hostname ->helm.realityforge.org
  - ipaddress ->1.2.3.4
  - interface ->127.0.0.1
  - caller ->com.biz.MyCaller.method(MyCaller.java:18)
  - source ->1.6.3.2:33
  The context is bound to a thread (and inherited by sub-threads) but it can also be added to by LogTargets.
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ContextMap()` Deprecated. Default constructor.
    `ContextMap(ContextMap parent)` Deprecated. Constructor that sets parent contextMap.

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `bind(ContextMap context)` Deprecated. Bind a particular ContextMap to current thread.
    `void` | `clear()` Deprecated. Empty the context map.
    `Object` | `get(String key)` Deprecated. Get an entry from the context.
    `Object` | `get(String key, Object defaultObject)` Deprecated. Get an entry from the context.
    `static ContextMap` | `getCurrentContext()` Deprecated. Get the Current ContextMap.
    `static ContextMap` | `getCurrentContext(boolean autocreate)` Deprecated. Get the Current ContextMap.
    `int` | `getSize()` Deprecated. Get the number of contexts in map.
    `boolean` | `isReadOnly()` Deprecated. Determine if context is read-only.
    `void` | `makeReadOnly()` Deprecated. Make the context read-only.
    `void` | `set(String key, Object value)` Deprecated. Set a value in context

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

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### ContextMap

          public ContextMap()

      Deprecated.
      Default constructor.

    - #### ContextMap

          public ContextMap(ContextMap parent)

      Deprecated.
      Constructor that sets parent contextMap.
      Parameters:
        `parent` - the parent ContextMap

  - ### Method Detail

    - #### getCurrentContext

          public static final ContextMap getCurrentContext()

      Deprecated.
      Get the Current ContextMap. This method returns a ContextMap associated with current thread. If the thread doesn't have a ContextMap associated with it then a new ContextMap is created.
      Returns:
        the current ContextMap

    - #### getCurrentContext

          public static final ContextMap getCurrentContext(boolean autocreate)

      Deprecated.
      Get the Current ContextMap. This method returns a ContextMap associated with current thread. If the thread doesn't have a ContextMap associated with it and autocreate is true then a new ContextMap is created.
      Parameters:
        `autocreate` - true if a ContextMap is to be created if it doesn't exist
      Returns:
        the current ContextMap

    - #### bind

          public static final void bind(ContextMap context)

      Deprecated.
      Bind a particular ContextMap to current thread.
      Parameters:
        `context` - the context map (may be null)

    - #### makeReadOnly

          public void makeReadOnly()

      Deprecated.
      Make the context read-only. This makes it safe to allow untrusted code reference to ContextMap.

    - #### isReadOnly

          public boolean isReadOnly()

      Deprecated.
      Determine if context is read-only.
      Returns:
        true if Context is read only, false otherwise

    - #### clear

          public void clear()

      Deprecated.
      Empty the context map.

    - #### get

          public Object get(String key,
                            Object defaultObject)

      Deprecated.
      Get an entry from the context.
      Parameters:
        `key` - the key to map
        `defaultObject` - a default object to return if key does not exist
      Returns:
        the object in context

    - #### get

          public Object get(String key)

      Deprecated.
      Get an entry from the context.
      Parameters:
        `key` - the key to map
      Returns:
        the object in context or null if none with specified key

    - #### set

          public void set(String key,
                          Object value)

      Deprecated.
      Set a value in context
      Parameters:
        `key` - the key
        `value` - the value (may be null)

    - #### getSize

          public int getSize()

      Deprecated.
      Get the number of contexts in map.
      Returns:
        the number of contexts in map

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