java.lang.Object
- com.iizix.term.EmptyHostSession

All Implemented Interfaces:: HostSessionPeer

public class EmptyHostSession
extends java.lang.Object
implements HostSessionPeer

The empty host session peer.

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

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[] attrs, int beginPos, int endPos)`	Gets the characters and attributes between two positions, including the end position.
`void`	`getCharactersAndAttributes(char[] chars, int[] attrs, 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.
`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.
`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()`	Never 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`	`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 originalOffset, 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 m)`	Sets the insert mode on or off.
`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

- Method Detail
  - is3270
```
public boolean is3270()
```
    Checks if a session is 3270 or 5250.
    Specified by:
    is3270 in interface HostSessionPeer
    Returns:
    true is always 3270.
  - 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 originalOffset,
                             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[] attrs,
                                       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[] attrs,
                                       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
  - setInsertMode
```
public boolean setInsertMode(boolean m)
```
    Sets the insert mode on or off.
    Specified by:
    setInsertMode in interface HostSessionPeer
    Returns:
    true for success, false for failure.
  - 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 always.
  - isPrinter
```
public boolean isPrinter()
```
    Checks if this is a printer or not (always false).
    Specified by:
    isPrinter in interface HostSessionPeer
  - 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 "input'able".
    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
  - isDisplayInSystemRequestMode
```
public boolean isDisplayInSystemRequestMode()
```
    Never in system request mode.
    Specified by:
    isDisplayInSystemRequestMode in interface HostSessionPeer
  - getComm
```
public SocketCommNIO getComm()
```
    Gets the communication engine.
    Specified by:
    getComm in interface HostSessionPeer
    Returns:
    The NIO instance.
  - getHostSession
```
public HostSession getHostSession()
```
    Gets the host session.
    Specified by:
    getHostSession in interface HostSessionPeer

Class EmptyHostSession

Field Summary

Fields inherited from interface com.iizix.term.HostSessionPeer

Method Summary

Methods inherited from class java.lang.Object

Method Detail

is3270

isProcessingDataStream

connect

disconnect

sendCharacterString

sendKey

setHostString

setHostStringAsKeys

doesHostNeedFieldExit

setCursor

getCursor

getScreenSize

getScreenLength

getSessionState

getCharactersAndAttributes

getCharactersAndAttributes

refreshHostFields

setInsertMode

getLastError

setLastError

getDeviceName

isPrinter

doesFieldHaveExtendedAttributes

getNewCharAttribute

getClientHostFieldFlags

isAutoReconnectSessionEnabled

getHomeAddress

setHostField

getAllowedCharacters

isFieldFormatted

isDisplayInSystemRequestMode

getComm

getHostSession