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Common Pull interface for Dream components. This interface defines a
method pull
that allows a component to ask another component
for a message.
Field Summary | |
static String |
IN_PULL_ITF_NAME
The commonly used name to refer to this interface when it is used as an input. |
static String |
OUT_PULL_ITF_NAME
The commonly used name to refer to this interface when it is used as an output. |
Method Summary | |
Message |
pull(Map context)
Asks for a message. |
Field Detail |
public static final String OUT_PULL_ITF_NAME
public static final String IN_PULL_ITF_NAME
Method Detail |
public Message pull(Map context) throws PullException
null
or block until a message is available.
context
- a general purpose context map. can be null
.
PullException
- if an exception occurs.
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