Package com.microfocus.zfe.haapi
Interface Session
public interface Session
A Session object represents a host session.
Once you have obtained the Session object, you can access the other elements
of the host session, such as the presentation space, operator information
area, file transfer object and Printing services.
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Method Summary
Modifier and TypeMethodDescriptionvoid
addConnectionListener
(ConnectionListener listener) Registers a listener that will receive connection events from this Session instance.void
connect()
Attempts a connection to the host.void
Disconnects from the host.Returns the current state of the host connection.This method will return the connected device name if available, or the configured device name, or null if no device name was configured.getOIA()
Returns the operator information area object (OIA) associated with the session.Returns the presentation space object associated with the session.getType()
Returns the type of host session.boolean
Determines whether the connection to the host is connected and ready.boolean
removeConnectionListener
(ConnectionListener listener) Unregisters an event listener that no longer wishes to receive connection events.void
setDeviceName
(String name) Configure a new device name for the session.
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Method Details
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connect
void connect()Attempts a connection to the host. The connection is attempted only if the current connection state isConnectionState.DISCONNECTED
. When this method is called, the connection state is first set toConnectionState.CONNECTING
. Only after the connection has been established is the status changed toConnectionState.CONNECTED
. You may choose to implement a timer in your code so if a connection does not succeed after a certain amount of time, you can calldisconnect
to cancel the connection attempt. Otherwise, the connection attempt may proceed indefinitely. This call returns immediately, status and errors are reported viaConnectionListener
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disconnect
void disconnect()Disconnects from the host. If the connection is currently pending and this method is called, the connection attempt is interrupted. As soon as this method is called, the connection status is set toConnectionState.DISCONNECTING
. Only after the connection has disconnected is the status changed toConnectionState.DISCONNECTED
. This call returns immediately, status and errors are reported viaConnectionListener
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isConnected
boolean isConnected()Determines whether the connection to the host is connected and ready.- Returns:
- true if the connection status is
ConnectionState.CONNECTED
, false otherwise.
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getConnectionState
ConnectionState getConnectionState()Returns the current state of the host connection.- Returns:
- the connection status
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getDeviceName
String getDeviceName()This method will return the connected device name if available, or the configured device name, or null if no device name was configured.- Returns:
- the connected device name, the configured device name, or null.
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setDeviceName
Configure a new device name for the session. Overrides any previously configured name.- Parameters:
name
- to use on the next connect.- Throws:
IllegalStateException
- if an attempt is made to set this property while the session is connected.
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addConnectionListener
Registers a listener that will receive connection events from this Session instance. If the listener has already been added it will not be added again.- Parameters:
listener
- the object that wishes to receive communication events.
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removeConnectionListener
Unregisters an event listener that no longer wishes to receive connection events. Before the object is unregistered, it receives a NotifyStop event.- Parameters:
listener
- the object that wishes to stop receiving notification.- Returns:
- true if successful.
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getType
SessionType getType()Returns the type of host session.- Returns:
- the type of host session
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getPresentationSpace
PresentationSpace getPresentationSpace()Returns the presentation space object associated with the session. The PresentationSpace object provides access to the virtual terminal screen.- Returns:
- the PresentationSpace object associated with the session.
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getOIA
OIA getOIA()Returns the operator information area object (OIA) associated with the session. The OIA object provides access to status information about the terminal screen.- Returns:
- the OIA object associated with the session.
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