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## weblogic.workarea
Interface WorkContextMap

    public interface WorkContextMap

`WorkContextMap` provides internal users and layered products mechanisms for tagging certain requests (whether remote or local) and propagating that information based on certain policy constraints. `WorkContextMap` is part of a client or application's JNDI environment and can be access through JNDI:

     WorkContextMap rc = (WorkContextMap)
       new InitialContext().lookup("java:comp/WorkContextMap");

Method Summary
`WorkContext` | `get(String key)` Get the current WorkContextMap's context data for key.
`int` | `getPropagationMode(String key)` Get the current `WorkContextMap`'s `PropagationMode` value for key.
`boolean` | `isEmpty()` Tests to see whether there are any `WorkContext`s in existance in the map.
`Iterator` | `iterator()` Return a iterator for all of the current `WorkContext` entries.
`Iterator` | `keys()` Return a iterator for all of the current `WorkContext` keys.
`WorkContext` | `put(String key, WorkContext ctx)` Adds context data with key `key` to the current WorkContextMap and associates it with the current thread.
`WorkContext` | `put(String key, WorkContext ctx, int propagationMode)` Adds context data with key `key` to the current WorkContextMap and associates it with the current thread.
`WorkContext` | `remove(String key)` Remove the context data for key from the current WorkContextMap.

Method Detail

### put

    WorkContext put(String key,
                    WorkContext ctx)
                    throws PropertyReadOnlyException

  Adds context data with key `key` to the current WorkContextMap and associates it with the current thread. The context data is propagated according to the default `PropagationMode`. The defaults are `PropagationMode.DEFAULT`.

  Parameters:
    `key` - a unique `String` that is used to obtain a reference to a particular `WorkContext`. Keys are encoded as `DataOutput.writeUTF(java.lang.String)`. In order to protect the key namespace a good convention is to use package names as a prefix. For example `com.you.SomeKey}.`
    `ctx` - The `WorkContext` to put in the map.
  Returns:
    the previous WorkContext for key
  Throws:
    `PropertyReadOnlyException` - if the property already exists and is read-only.
    `NullPointerException` - if the property or context is null.

### put

    WorkContext put(String key,
                    WorkContext ctx,
                    int propagationMode)
                    throws PropertyReadOnlyException

  Adds context data with key `key` to the current WorkContextMap and associates it with the current thread. This context data is propagated according to the provided mode `propagationMode`. Any existing value for key will be changed as per the property mode `propertyModeType`. It is legal for multiple context data items to be propagated as long as their keys differ. Properties that are set in the WorkContextMap are propagated based on propagation policies assigned to the property. By default a property is not propagated out of the current thread. Applying `PropagationMode.WORK` allows a property to be propagated to Work instances. Applying `PropagationMode.RMI` allows a property to be propagated in RMI calls. Applying `PropagationMode.TRANSACTION` allows a property to be propagated between different global transactions. Applying `PropagationMode.JMS_QUEUE` allows a property to be propagated to JMS consumers. Applying `PropagationMode.JMS_TOPIC` allows a property to be propagated from JMS producers. Applying `PropagationMode.SOAP` allows a property to be propagated across SOAP messages. Applying `PropagationMode.MIME_HEADER` allows a property to be propagated from mail messages or cookies. `PropagationMode`s are additive and can be used together. `PropagationMode.GLOBAL` is an alias for `PropagationMode.RMI, PropagationMode.SOAP, PropagationMode.JMS_QUEUE` and `PropagationMode.MIME_HEADERS`

  Parameters:
    `key` - a unique `String` that is used to obtain a reference to a particular `WorkContext`. Keys are encoded as `DataOutput.writeUTF(java.lang.String)`. In order to protect the key namespace a good convention is to use package names as a prefix. For example `com.you.SomeKey`.
    `ctx` - The `WorkContext` to put in the map. specifies how the `WorkContext` entry can be modified.
    `propagationMode` - a bitwise-OR of `PropagationMode` values prescribing how the `WorkContext` entry should be propagated.
  Returns:
    the previous WorkContext for key
  Throws:
    `PropertyReadOnlyException` - if the property already exists and is read-only.
    `NullPointerException` - if the property or context is null.
  See Also:
    `PropagationMode`

### get

    WorkContext get(String key)

  Get the current WorkContextMap's context data for key. If the current WorkContextMap has no value for key then null is returned.

  Parameters:
    `key` - a unique `String` that is used to obtain a reference to a particular `WorkContext`
  Returns:
    a `WorkContext` value or null if there is none.

### getPropagationMode

    int getPropagationMode(String key)

  Get the current `WorkContextMap`'s `PropagationMode` value for key. If the current `WorkContextMap` has no value for key then PropagationMode.LOCAL is returned.

  Parameters:
    `key` - a unique `String` that is used to obtain a reference to a particular `WorkContext`
  Returns:
    a bitwise-OR of `PropagationMode` values prescribing how the `WorkContext` entry should be propagated.

### remove

    WorkContext remove(String key)
                       throws NoWorkContextException,
                              PropertyReadOnlyException

  Remove the context data for key from the current WorkContextMap. This will throw `PropertyReadOnlyException` if the permissions on the key do not allow deletion.

  Parameters:
    `key` - a unique `String` that is used to obtain a reference to a particular `WorkContext`
  Returns:
    the removed WorkContext
  Throws:
    `NoWorkContextException` - if there is no mapping for `key`
    `PropertyReadOnlyException` - if a mapping exists but is read-only.

### isEmpty

    boolean isEmpty()

  Tests to see whether there are any `WorkContext`s in existance in the map. Returns true if there are no elements in the map, false otherwise.

  Returns:
    a `boolean` value

### iterator

    Iterator iterator()

  Return a iterator for all of the current `WorkContext` entries. If there are no entries then null is returned.

  Returns:
    a `Iterator` representing the current entries.

### keys

    Iterator keys()

  Return a iterator for all of the current `WorkContext` keys. If there are no entries then null is returned.

  Returns:
    a `Iterator` representing the current keys.

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