java.lang.Object
- com.iizix.term.tn5250e.HostSession5250

All Implemented Interfaces:
TelnetCommListener, HostSessionPeer
```
public class HostSession5250
extends java.lang.Object
implements HostSessionPeer, TelnetCommListener
```
The 5250 host session peer.
Author:
Christopher Mindus

Field Summary
- Fields inherited from interface com.iizix.term.HostSessionPeer
  STATE_AnyLock, STATE_Connected, STATE_Connecting, STATE_Error, STATE_FieldFullError, STATE_InsertMode, STATE_Lock, STATE_MessageWaiting, STATE_MinusError, STATE_NonNumericError, STATE_OnFieldOrProtected, STATE_ReceiveWait, STATE_Reconnecting, STATE_Secure, STATE_Sending, STATE_SSCPLUOwned, STATE_SystemAvailable

Constructor Summary
Constructors
Constructor Description
HostSession5250(HostSession owner, TerminalProps properties)
Constructor only from this package.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`connect()`	Connects the session to host.
`boolean`	`disconnect()`	Disconnects the session from host.
`boolean`	`doesFieldHaveExtendedAttributes(HostField hostField)`	Checks if a host field has extended attributes or not.
`boolean`	`doesHostNeedFieldExit(int x, int y, int offset, int length, java.lang.String string)`	For 5250 only: checks if a field has the attributes that requires this particular string to enter the data followed by a "Field Exit" or "Field Minus" key.
`java.lang.String`	`getAllowedCharacters()`	Gets the string of characters that can be input by the user using the configured host code page for this session.
`void`	`getCharactersAndAttributes(char[] chars, int[] attrbs, int beginPos, int endPos)`	Gets the characters and attributes between two positions, including the end position.
`void`	`getCharactersAndAttributes(char[] chars, int[] attrbs, int beginPos, int endPos, char fieldOrNullChar)`	Gets the characters and attributes between two positions, including the end position.
`int`	`getClientHostFieldFlags(HostField hostField)`	Gets flags that are required for the client host fields for local editing, etc.
`SocketCommNIO`	`getComm()`	Gets the communication engine.
`Position`	`getCursor()`	Gets the current host cursor position.
`java.lang.String`	`getDeviceName()`	Gets the device name of the session.
`int`	`getHomeAddress()`	Gets the host address index on the screen.
`HostSession`	`getHostSession()`	Gets the host session owner.
`java.lang.String`	`getLastError(boolean doClear)`	Gets the last error message of the session.
`int`	`getNewCharAttribute(HostField hostField)`	Gets the attribute to use for new characters in a field that contains extended attributes (always zero for non-3270).
`int`	`getScreenLength()`	Gets the current screen length (width * height).
`Size`	`getScreenSize()`	Gets the current screen size.
`int`	`getSessionState()`	Gets the current session state.
`void`	`hostAcceptedDataStream(TelnetComm comm, java.lang.String terminalType)`	The host accepted the options for the terminal type and went into BINARY mode.
`boolean`	`is3270()`	Checks if a session is 3270 or 5250.
`boolean`	`isAutoReconnectSessionEnabled()`	Checks if the use of auto reconnect session is handled or not.
`boolean`	`isDisplayInSystemRequestMode()`	Checks if the display (5250 only) is in System Request mode.
`boolean`	`isFieldFormatted()`	Checks if this host screen is field formatted.
`boolean`	`isPrinter()`	Checks if this is a printer or not (always false).
`boolean`	`isProcessingDataStream()`	Checks if the session is currently processing data stream commands to update the screen/cursor, state, etc.
`void`	`onCommClosed(TelnetComm comm)`	Called when the communication link is closed.
`void`	`onCommConnected(TelnetComm comm)`	Called when the communication link is connected.
`void`	`onCommError(TelnetComm comm, java.io.IOException e)`	Called when the communication link is closed.
`void`	`onCommOpen(TelnetComm comm)`	Called when the communication link is opened.
`void`	`onCommState(SocketCommNIO comm)`	Called when the state changes.
`void`	`processInboundDataStream(TelnetComm comm, byte[] inputBuf, int pos, int inputBufLen)`	Processes the inbound 3270 or 5250 data stream.
`void`	`processInboundSCSDataStream(TelnetComm comm, byte[] inputBuf, int inputBufLen)`	Processes the inbound 3270 printer data stream.
`void`	`processInboundSSCPLUDataStream(TelnetComm comm, byte[] inputBuf, int pos, int inputBufLen)`	Processes the inbound 3270 SSCP-LU data stream.
`void`	`processPrintEOJ(TelnetComm comm)`	Processes a Print End-of-Job for 3270 printers.
`void`	`refreshHostFields(HostFields fields)`	Refreshes the host fields of the current session.
`boolean`	`sendCharacterString(java.lang.String keys)`	Sends character keystrokes to host.
`boolean`	`sendKey(int key)`	Sends character keystrokes to host.
`boolean`	`setCursor(int x, int y)`	Sets the host cursor position.
`boolean`	`setHostField(HostField hostField, java.lang.String data, int[] attrs)`	Sets a host field fully with text data and perhaps attributes (if these are non-null).
`boolean`	`setHostString(int x, int y, int offset, int length, java.lang.String string)`	Sets a string to a host field.
`boolean`	`setHostStringAsKeys(int x, int y, int offset, int length, java.lang.String string)`	Sets a string to a host field just as if the user typed the characters.
`boolean`	`setInsertMode(boolean on)`	Sets the insert mode.
`void`	`setLastError(java.lang.String errMsg)`	Sets the last error message of the session.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HostSession5250
```
public HostSession5250(HostSession owner,
                       TerminalProps properties)
                throws java.io.IOException
```
    Constructor only from this package.
    Parameters:
    owner - Owner of session.
    properties - The terminal and communication properties.
    Throws:
    java.io.IOException - For connection failure.
- Method Detail
  - getHostSession
```
public HostSession getHostSession()
```
    Gets the host session owner.
    Specified by:
    getHostSession in interface HostSessionPeer
  - is3270
```
public boolean is3270()
```
    Checks if a session is 3270 or 5250.
    Specified by:
    is3270 in interface HostSessionPeer
    Returns:
    false is always 5250.
  - isProcessingDataStream
```
public boolean isProcessingDataStream()
```
    Checks if the session is currently processing data stream commands to update the screen/cursor, state, etc.
    Specified by:
    isProcessingDataStream in interface HostSessionPeer
  - connect
```
public boolean connect()
```
    Connects the session to host.
    Specified by:
    connect in interface HostSessionPeer
  - disconnect
```
public boolean disconnect()
```
    Disconnects the session from host.
    Specified by:
    disconnect in interface HostSessionPeer
  - sendCharacterString
```
public boolean sendCharacterString(java.lang.String keys)
```
    Sends character keystrokes to host.
    Specified by:
    sendCharacterString in interface HostSessionPeer
  - sendKey
```
public boolean sendKey(int key)
```
    Sends character keystrokes to host.
    Specified by:
    sendKey in interface HostSessionPeer
    See Also:
    HostSendKeys
  - setHostString
```
public boolean setHostString(int x,
                             int y,
                             int offset,
                             int length,
                             java.lang.String string)
```
    Sets a string to a host field.
    Specified by:
    setHostString in interface HostSessionPeer
  - setHostStringAsKeys
```
public boolean setHostStringAsKeys(int x,
                                   int y,
                                   int offset,
                                   int length,
                                   java.lang.String string)
```
    Sets a string to a host field just as if the user typed the characters. The host field is first cleared with (3270) Clear EOF or (5250) Field Exit or Field Minus (for negative numbers in a numeric field). The string is then entered as a set of keystrokes, followed by a potential Field Exit or Field Minus (for negative numbers in a numeric field), but only for 5250.
    Specified by:
    setHostStringAsKeys in interface HostSessionPeer
  - doesHostNeedFieldExit
```
public boolean doesHostNeedFieldExit(int x,
                                     int y,
                                     int offset,
                                     int length,
                                     java.lang.String string)
```
    For 5250 only: checks if a field has the attributes that requires this particular string to enter the data followed by a "Field Exit" or "Field Minus" key. For 3270 it's always false.
    Specified by:
    doesHostNeedFieldExit in interface HostSessionPeer
    Returns:
    false=field doesn't require field exit, true=field requires field exit.
  - setCursor
```
public boolean setCursor(int x,
                         int y)
```
    Sets the host cursor position.
    Specified by:
    setCursor in interface HostSessionPeer
  - getCursor
```
public Position getCursor()
```
    Gets the current host cursor position.
    Specified by:
    getCursor in interface HostSessionPeer
  - getScreenSize
```
public Size getScreenSize()
```
    Gets the current screen size.
    Specified by:
    getScreenSize in interface HostSessionPeer
  - getScreenLength
```
public int getScreenLength()
```
    Gets the current screen length (width * height).
    Specified by:
    getScreenLength in interface HostSessionPeer
  - getSessionState
```
public int getSessionState()
```
    Gets the current session state.
    Specified by:
    getSessionState in interface HostSessionPeer
    Returns:
    A combination of HostSessionPeer.STATE_* flags is returned.
  - getCharactersAndAttributes
```
public void getCharactersAndAttributes(char[] chars,
                                       int[] attrbs,
                                       int beginPos,
                                       int endPos)
```
    Gets the characters and attributes between two positions, including the end position.
    Specified by:
    getCharactersAndAttributes in interface HostSessionPeer
  - getCharactersAndAttributes
```
public void getCharactersAndAttributes(char[] chars,
                                       int[] attrbs,
                                       int beginPos,
                                       int endPos,
                                       char fieldOrNullChar)
```
    Gets the characters and attributes between two positions, including the end position. The character "fieldOrNullChar" is the character that will be used instead of field attributes and null characters.
    Specified by:
    getCharactersAndAttributes in interface HostSessionPeer
  - refreshHostFields
```
public void refreshHostFields(HostFields fields)
```
    Refreshes the host fields of the current session. The host session will add all available host fields sorted left to right, top to bottom.
    Specified by:
    refreshHostFields in interface HostSessionPeer
  - getLastError
```
public java.lang.String getLastError(boolean doClear)
```
    Gets the last error message of the session.
    Specified by:
    getLastError in interface HostSessionPeer
    Returns:
    null if the session doesn't support it (3270 doesn't).
  - setLastError
```
public void setLastError(java.lang.String errMsg)
```
    Sets the last error message of the session.
    Specified by:
    setLastError in interface HostSessionPeer
  - getDeviceName
```
public java.lang.String getDeviceName()
```
    Gets the device name of the session.
    Specified by:
    getDeviceName in interface HostSessionPeer
    Returns:
    null if no device name exists.
  - isPrinter
```
public boolean isPrinter()
```
    Checks if this is a printer or not (always false).
    Specified by:
    isPrinter in interface HostSessionPeer
  - setInsertMode
```
public boolean setInsertMode(boolean on)
```
    Sets the insert mode.
    Specified by:
    setInsertMode in interface HostSessionPeer
    Returns:
    true for success, false for failure.
  - doesFieldHaveExtendedAttributes
```
public boolean doesFieldHaveExtendedAttributes(HostField hostField)
```
    Checks if a host field has extended attributes or not. 5250 never has, but 3270 could have, e.g. special highlighting.
    Specified by:
    doesFieldHaveExtendedAttributes in interface HostSessionPeer
  - getNewCharAttribute
```
public int getNewCharAttribute(HostField hostField)
```
    Gets the attribute to use for new characters in a field that contains extended attributes (always zero for non-3270).
    Specified by:
    getNewCharAttribute in interface HostSessionPeer
  - getClientHostFieldFlags
```
public int getClientHostFieldFlags(HostField hostField)
```
    Gets flags that are required for the client host fields for local editing, etc.
    Specified by:
    getClientHostFieldFlags in interface HostSessionPeer
  - isAutoReconnectSessionEnabled
```
public boolean isAutoReconnectSessionEnabled()
```
    Checks if the use of auto reconnect session is handled or not.
    Specified by:
    isAutoReconnectSessionEnabled in interface HostSessionPeer
  - getHomeAddress
```
public int getHomeAddress()
```
    Gets the host address index on the screen.
    Specified by:
    getHomeAddress in interface HostSessionPeer
  - setHostField
```
public boolean setHostField(HostField hostField,
                            java.lang.String data,
                            int[] attrs)
```
    Sets a host field fully with text data and perhaps attributes (if these are non-null).
    Specified by:
    setHostField in interface HostSessionPeer
    Returns:
    true for success, false for failure.
  - getAllowedCharacters
```
public java.lang.String getAllowedCharacters()
```
    Gets the string of characters that can be input by the user using the configured host code page for this session.
    If the return string is empty, for the EE package for example, all characters are "inputable".
    Specified by:
    getAllowedCharacters in interface HostSessionPeer
  - isFieldFormatted
```
public boolean isFieldFormatted()
```
    Checks if this host screen is field formatted. This method is not like the one in HostScreen, this one checks directly to see if any fields are present.
    Specified by:
    isFieldFormatted in interface HostSessionPeer
    Returns:
    true 5250 is always field formatted.
  - isDisplayInSystemRequestMode
```
public boolean isDisplayInSystemRequestMode()
```
    Checks if the display (5250 only) is in System Request mode.
    Specified by:
    isDisplayInSystemRequestMode in interface HostSessionPeer
  - onCommOpen
```
public void onCommOpen(TelnetComm comm)
```
    Description copied from interface: TelnetCommListener
    Called when the communication link is opened.
    Specified by:
    onCommOpen in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
  - onCommConnected
```
public void onCommConnected(TelnetComm comm)
```
    Description copied from interface: TelnetCommListener
    Called when the communication link is connected.
    Specified by:
    onCommConnected in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
  - hostAcceptedDataStream
```
public void hostAcceptedDataStream(TelnetComm comm,
                                   java.lang.String terminalType)
```
    Description copied from interface: TelnetCommListener
    The host accepted the options for the terminal type and went into BINARY mode. This means that 3270/5250 data stream will follow. Inform the host session listener of a connect change.
    Specified by:
    hostAcceptedDataStream in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
    terminalType - The terminal type accepted by the host at Telnet terminal negotiation.
  - processInboundDataStream
```
public void processInboundDataStream(TelnetComm comm,
                                     byte[] inputBuf,
                                     int pos,
                                     int inputBufLen)
                              throws java.io.IOException
```
    Description copied from interface: TelnetCommListener
    Processes the inbound 3270 or 5250 data stream.
    Specified by:
    processInboundDataStream in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
    inputBuf - The input buffer.
    pos - Start position in buffer.
    inputBufLen - Length of input buffer.
    Throws:
    java.io.IOException - If an I/O error occurs.
  - processInboundSCSDataStream
```
public void processInboundSCSDataStream(TelnetComm comm,
                                        byte[] inputBuf,
                                        int inputBufLen)
                                 throws java.io.IOException
```
    Description copied from interface: TelnetCommListener
    Processes the inbound 3270 printer data stream. Processing of the buffer always starts at position 0.
    Specified by:
    processInboundSCSDataStream in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
    inputBuf - The input buffer.
    inputBufLen - Length of input buffer.
    Throws:
    java.io.IOException - If an I/O error occurs.
  - processInboundSSCPLUDataStream
```
public void processInboundSSCPLUDataStream(TelnetComm comm,
                                           byte[] inputBuf,
                                           int pos,
                                           int inputBufLen)
                                    throws java.io.IOException
```
    Description copied from interface: TelnetCommListener
    Processes the inbound 3270 SSCP-LU data stream.
    Specified by:
    processInboundSSCPLUDataStream in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
    inputBuf - The input buffer.
    pos - Start position in buffer.
    inputBufLen - Length of input buffer.
    Throws:
    java.io.IOException - If an I/O error occurs.
  - processPrintEOJ
```
public void processPrintEOJ(TelnetComm comm)
                     throws java.io.IOException
```
    Description copied from interface: TelnetCommListener
    Processes a Print End-of-Job for 3270 printers.
    Specified by:
    processPrintEOJ in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
    Throws:
    java.io.IOException - If an I/O error occurs.
  - onCommError
```
public void onCommError(TelnetComm comm,
                        java.io.IOException e)
```
    Description copied from interface: TelnetCommListener
    Called when the communication link is closed.
    Specified by:
    onCommError in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.
    e - The exception.
  - getComm
```
public SocketCommNIO getComm()
```
    Gets the communication engine.
    Specified by:
    getComm in interface HostSessionPeer
    Returns:
    The NIO instance.
  - onCommState
```
public void onCommState(SocketCommNIO comm)
```
    Called when the state changes.
    Specified by:
    onCommState in interface TelnetCommListener
    Parameters:
    comm - Socket communication instance.
  - onCommClosed
```
public void onCommClosed(TelnetComm comm)
```
    Description copied from interface: TelnetCommListener
    Called when the communication link is closed.
    Specified by:
    onCommClosed in interface TelnetCommListener
    Parameters:
    comm - The telnet communication instance.

Class HostSession5250

Field Summary

Fields inherited from interface com.iizix.term.HostSessionPeer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

HostSession5250

Method Detail

getHostSession

is3270

isProcessingDataStream

connect

disconnect

sendCharacterString

sendKey

setHostString

setHostStringAsKeys

doesHostNeedFieldExit

setCursor

getCursor

getScreenSize

getScreenLength

getSessionState

getCharactersAndAttributes

getCharactersAndAttributes

refreshHostFields

getLastError

setLastError

getDeviceName

isPrinter

setInsertMode

doesFieldHaveExtendedAttributes

getNewCharAttribute

getClientHostFieldFlags

isAutoReconnectSessionEnabled

getHomeAddress

setHostField

getAllowedCharacters

isFieldFormatted

isDisplayInSystemRequestMode

onCommOpen

onCommConnected

hostAcceptedDataStream

processInboundDataStream

processInboundSCSDataStream

processInboundSSCPLUDataStream

processPrintEOJ

onCommError

getComm

onCommState

onCommClosed