Ice::ImplicitContext Local Interface Reference

An interface to associate implict contexts with communicators. More...

Defined in <Ice/ImplicitContext.ice>

local interface ImplicitContext { ... }

Operations
bool	containsKey (string key)
	Check if this key has an associated value in the underlying context. More...
string	get (string key)
	Get the value associated with the given key in the underlying context. More...
Context	getContext ()
	Get a copy of the underlying context. More...
string	put (string key, string value)
	Create or update a key/value entry in the underlying context. More...
string	remove (string key)
	Remove the entry for the given key in the underlying context. More...
void	setContext (Context newContext)
	Set the underlying context. More...

Detailed Description

An interface to associate implict contexts with communicators.

When you make a remote invocation without an explicit context parameter, Ice uses the per-proxy context (if any) combined with the ImplicitContext associated with the communicator.

Ice provides several implementations of ImplicitContext. The implementation used depends on the value of the Ice.ImplicitContext property.

None (default)

No implicit context at all.

PerThread

The implementation maintains a context per thread.

Shared

The implementation maintains a single context shared by all threads.

ImplicitContext also provides a number of operations to create, update or retrieve an entry in the underlying context without first retrieving a copy of the entire context. These operations correspond to a subset of the java.util.Map methods, with java.lang.Object replaced by string and null replaced by the empty-string.

Operation Documentation

containsKey()

["cpp:const"]

bool containsKey

(

string

key

)

Check if this key has an associated value in the underlying context.

Parameters

key

The key.

Returns

True if the key has an associated value, False otherwise.

get()

["cpp:const"]

string get

(

string

key

)

Get the value associated with the given key in the underlying context.

Returns an empty string if no value is associated with the key. containsKey allows you to distinguish between an empty-string value and no value at all.

Parameters

key

The key.

Returns

The value associated with the key.

getContext()

["cpp:const"]

Context getContext

(

)

Get a copy of the underlying context.

Returns

A copy of the underlying context.

put()

string put	(	string	key,
		string	value
	)

Create or update a key/value entry in the underlying context.

Parameters

key	The key.
value	The value.

Returns

The previous value associated with the key, if any.

remove()

string remove

(

string

key

)

Remove the entry for the given key in the underlying context.

Parameters

key

The key.

Returns

The value associated with the key, if any.

setContext()

void setContext

(

Context

newContext

)

Set the underlying context.

Parameters

newContext

The new context.

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The documentation for this interface was generated from the following file:

• Ice/ImplicitContext.ice