CommFunctionBlockLayer

java.lang.Object
- de.htw.berlin.polysun4diac.forte.comm.AbstractCommunicationLayer
- - de.htw.berlin.polysun4diac.forte.comm.CommFunctionBlockLayer

All Implemented Interfaces:

ICommunicationLayer, IForteSocket, java.io.Serializable
```
public class CommFunctionBlockLayer
extends AbstractCommunicationLayer
implements IForteSocket
```
Top level OSI layer for handling communication with IEC 61499 communication service interface function blocks (CSIFBs) running on 4diac-RTE (FORTE). This layer is intended for use only if the number of function block inputs differs from the number of function block outputs, since the ForteDataBufferLayer by itself can only communicate with function blocks whose number of inputs do not differ from their number of outputs.

Author:

Marc Jakobi
HTW Berlin
July 2017

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description

CommFunctionBlockLayer()

Constructors
Constructor and Description
`CommFunctionBlockLayer()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`byte[]`	`array()` This method is intended to allow array-backed buffers to be passed to native code more efficiently.
`int`	`capacity()` Returns the input byte buffer's capacity
`boolean`	`closeConnection()` Closes this layer and calls closeConnection() on the layer below.
`void`	`disconnect()` Closes the connection.
`ICommunicationLayer`	`getBelow()`
`boolean`	`getBool()` Increments the position by one.
`boolean[]`	`getBoolArray()` Increments the position by one.
`DateAndTime`	`getDateAndTime()` Increments the position by one.
`DateAndTime[]`	`getDateAndTimeArray()` Increments the position by one.
`double`	`getDouble()` Increments the position by one.
`double[]`	`getDoubleArray()` Increments the position by one.
`float`	`getFloat()` Increments the position by one.
`float[]`	`getFloatArray()` Increments the position by one.
`int`	`getInt()` Increments the position by one.
`int[]`	`getIntArray()` Increments the position by one.
`long`	`getLong()` Increments the position by one.
`long[]`	`getLongArray()` Increments the position by one.
`int`	`getNumDataValues()`
`int`	`getPosition()` Returns this data buffer's position.
`java.lang.String`	`getString()` Increments the position by one.
`java.lang.String[]`	`getStringArray()` Increments the position by one.
`ForteDataType`	`getTypeAtNextPosition()` Returns Intended for enabling the dynamic retrieval of data from the buffer.
`ForteDataType`	`getTypeAtPosition(int position)` Intended for enabling the dynamic retrieval of data from the buffer.
`boolean`	`incrementPosition()` Increments this buffer's position by 1.
`boolean`	`isArrayAtPosition(int position)` Intended for enabling the dynamic retrieval of data from the buffer.
`boolean`	`isBool()`
`boolean`	`isBoolArray()`
`boolean`	`isConnected()`
`boolean`	`isDateAndTime()`
`boolean`	`isDateAndTimeArray()`
`boolean`	`isDouble()`
`boolean`	`isDoubleArray()`
`boolean`	`isFloat()`
`boolean`	`isFloatArray()`
`boolean`	`isInt()`
`boolean`	`isIntArray()`
`boolean`	`isLong()`
`boolean`	`isLongArray()`
`boolean`	`isString()`
`boolean`	`isStringArray()`
`java.util.Iterator<java.lang.Object>`	`iterator()` Use this method with caution.
`boolean`	`openConnection(CommLayerParams params)` Opens the connection and sets up the communication stack.
`boolean`	`put(boolean value)` Adds a boolean to be sent to FORTE as an IEC 61499 BOOLEAN to buffer
`boolean`	`put(boolean[] value)` Adds a boolean[] array to be sent to FORTE as an IEC 61499 BOOLEAN array to buffer
`boolean`	`put(DateAndTime value)` Adds a DateAndTime object to be sent to FORTE as IEC 61499 DATE_AND_TIME data to buffer
`boolean`	`put(DateAndTime[] value)` Adds a DateAndTime[] array to be sent to FORTE as an IEC 61499 DATE_AND_TIME array to buffer
`boolean`	`put(double value)` Adds a double to be sent to FORTE as IEC 61499 LREAL to buffer
`boolean`	`put(double[] value)` Adds a double[] array to be sent to FORTE as an IEC 61499 LREAL array to buffer
`boolean`	`put(float value)` Adds a float to be sent to FORTE as IEC 61499 REAL to buffer
`boolean`	`put(float[] value)` Adds a float[] array to be sent to FORTE as an IEC 61499 REAL array to buffer
`boolean`	`put(int value)` Adds a 32 bit int to be sent to FORTE as one of the IEC 61499 32 bit integer types to buffer
`boolean`	`put(int[] value)` Adds a 32 bit int[] array to be sent to FORTE as an IEC 61499 32 bit integer array to buffer
`boolean`	`put(long value)` Adds a 64 bit long integer to be sent to FORTE as an IEC 61499 integer to buffer
`boolean`	`put(long[] value)` Adds a 64 bit long[] integer array to be sent to FORTE as an IEC 61499 integer array to buffer
`boolean`	`put(java.lang.String value)` Adds a String to be sent to FORTE as an IEC 61499 STRING to buffer
`boolean`	`put(java.lang.String[] value)` Adds a String[] array to be sent to FORTE as an IEC 61499 STRING array to buffer
`byte`	`readByte()` Reads a byte from the communication layer below or the connected device if this layer is the bottom layer.
`double`	`readDouble()` Reads 8 bytes from the communication layer below or the connected device if this layer is the bottom layer.
`float`	`readFloat()` Reads 4 bytes from the communication layer below or the connected device if this layer is the bottom layer.
`long`	`readLong()` Reads 4 bytes from the communication layer below or the connected device if this layer is the bottom layer.
`void`	`recvData()` Performs the necessary actions for receiving data.
`void`	`reset()` Resets the position to its initialized state and clears the internal byte buffer.
`void`	`rewind()` Resets the position to its initialized state.
`void`	`sendData()` Writes the data stored within this instance's byte buffer to a DataOutputStream.
`void`	`sendData(byte[] data, int off, int len)` Performs the necessary actions for sending data.
`void`	`sendRsp()` Sends a response (e.g., a single byte with the value of 5)
`void`	`setBelow(ICommunicationLayer below)` Sets the communication layer below this layer.
`void`	`setDateAndTimeReference(DateAndTime dt)` Sets a DateAndTime object as reference for any new DateAndTime objects received.
`void`	`setPosition(int position)` Sets the position.

Methods inherited from class de.htw.berlin.polysun4diac.forte.comm.AbstractCommunicationLayer
getAbove, getConnectionState, getRawBytes, sendData, setAbove

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

- Constructor Detail
  - CommFunctionBlockLayer
```
public CommFunctionBlockLayer()
```
- Method Detail
  - array
```
public byte[] array()
```
    This method is intended to allow array-backed buffers to be passed to native code more efficiently. Modifications to this buffer's content will cause the returned array's content to be modified, and vice versa.
    
    Specified by:
    
    array in interface IForteSocket
    
    Returns:
    
    the array that backs this buffer�for data to be sent�(optional operation).
  - capacity
```
public int capacity()
```
    Returns the input byte buffer's capacity
    
    Specified by:
    
    capacity in interface IForteSocket
  - getBool
```
public boolean getBool()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isBool() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getBool in interface IForteSocket
    
    Returns:
    
    boolean value at the next position.
  - getBoolArray
```
public boolean[] getBoolArray()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isBoolArray() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getBoolArray in interface IForteSocket
    
    Returns:
    
    boolean[] value at the next position.
  - getDateAndTime
```
public DateAndTime getDateAndTime()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isDateAndTime() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getDateAndTime in interface IForteSocket
    
    Returns:
    
    DateAndTime value at the next position.
  - getDateAndTimeArray
```
public DateAndTime[] getDateAndTimeArray()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isDateAndTimeArray() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getDateAndTimeArray in interface IForteSocket
    
    Returns:
    
    DateAndTime[] value at the next position.
  - getDouble
```
public double getDouble()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isDouble() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getDouble in interface IForteSocket
    
    Returns:
    
    double value at the next position.
  - getDoubleArray
```
public double[] getDoubleArray()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isDoubleArray() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getDoubleArray in interface IForteSocket
    
    Returns:
    
    double[] value at the next position.
  - getFloat
```
public float getFloat()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isFloat() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getFloat in interface IForteSocket
    
    Returns:
    
    float value at the next position.
  - getFloatArray
```
public float[] getFloatArray()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isFloatArray() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getFloatArray in interface IForteSocket
    
    Returns:
    
    float[] value at the next position.
  - getInt
```
public int getInt()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isInt() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getInt in interface IForteSocket
    
    Returns:
    
    int value at the next position.
  - getIntArray
```
public int[] getIntArray()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isIntArray() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getIntArray in interface IForteSocket
    
    Returns:
    
    int[] value at the next position.
  - getLong
```
public long getLong()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isLong() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getLong in interface IForteSocket
    
    Returns:
    
    long value at the next position.
  - getLongArray
```
public long[] getLongArray()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isLongArray() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getLongArray in interface IForteSocket
    
    Returns:
    
    long[] value at the next position.
  - getNumDataValues
```
public int getNumDataValues()
```
    Specified by:
    
    getNumDataValues in interface IForteSocket
    
    Returns:
    
    The number of data values that can be stored within this buffer.
  - getPosition
```
public int getPosition()
```
    Description copied from interface: IForteSocket
    
    Returns this data buffer's position. If this method returns -1, IForteSocket.incrementPosition() must be called before extracting data.
    
    Specified by:
    
    getPosition in interface IForteSocket
  - getString
```
public java.lang.String getString()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isString() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getString in interface IForteSocket
    
    Returns:
    
    String value at the next position.
  - getStringArray
```
public java.lang.String[] getStringArray()
```
    Description copied from interface: IForteSocket
    
    Increments the position by one.
    Use IForteSocket.isStringArray() to determine whether the correct data type is at the next position.
    
    Specified by:
    
    getStringArray in interface IForteSocket
    
    Returns:
    
    String[] value at the next position.
  - getTypeAtNextPosition
```
public ForteDataType getTypeAtNextPosition()
```
    Description copied from interface: IForteSocket
    
    Returns Intended for enabling the dynamic retrieval of data from the buffer. Throws an exception if position is out of bounds.
    
    Specified by:
    
    getTypeAtNextPosition in interface IForteSocket
    
    Returns:
    
    a ForteDataType enumeration representing the FORTE data type at the next position.
  - getTypeAtPosition
```
public ForteDataType getTypeAtPosition(int position)
```
    Description copied from interface: IForteSocket
    
    Intended for enabling the dynamic retrieval of data from the buffer. Throws an exception if position is out of bounds.
    
    Specified by:
    
    getTypeAtPosition in interface IForteSocket
    
    Returns:
    
    a ForteDataType enumeration representing the FORTE data type at the specified position.
  - incrementPosition
```
public boolean incrementPosition()
```
    Description copied from interface: IForteSocket
    
    Increments this buffer's position by 1.
    
    Specified by:
    
    incrementPosition in interface IForteSocket
    
    Returns:
    
    true if Position was successfully incremented, false otherwise
  - isArrayAtPosition
```
public boolean isArrayAtPosition(int position)
```
    Description copied from interface: IForteSocket
    
    Intended for enabling the dynamic retrieval of data from the buffer. Throws an exception if position is out of bounds.
    
    Specified by:
    
    isArrayAtPosition in interface IForteSocket
    
    Returns:
    
    true if the data at the specified position is an array and false otherwise.
  - isBool
```
public boolean isBool()
```
    Specified by:
    
    isBool in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type boolean. If the position is at the end of the data buffer, the current position is checked.
  - isBoolArray
```
public boolean isBoolArray()
```
    Specified by:
    
    isBoolArray in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type boolean[]. If the position is at the end of the data buffer, the current position is checked.
  - isDateAndTime
```
public boolean isDateAndTime()
```
    Specified by:
    
    isDateAndTime in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type DateAndTime. If the position is at the end of the data buffer, the current position is checked.
  - isDateAndTimeArray
```
public boolean isDateAndTimeArray()
```
    Specified by:
    
    isDateAndTimeArray in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type DateAndTime[]. If the position is at the end of the data buffer, the current position is checked.
  - isDouble
```
public boolean isDouble()
```
    Specified by:
    
    isDouble in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type double. If the position is at the end of the data buffer, the current position is checked.
  - isDoubleArray
```
public boolean isDoubleArray()
```
    Specified by:
    
    isDoubleArray in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type double[]. If the position is at the end of the data buffer, the current position is checked.
  - isFloat
```
public boolean isFloat()
```
    Specified by:
    
    isFloat in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type float. If the position is at the end of the data buffer, the current position is checked.
  - isFloatArray
```
public boolean isFloatArray()
```
    Specified by:
    
    isFloatArray in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type float[]. If the position is at the end of the data buffer, the current position is checked.
  - isInt
```
public boolean isInt()
```
    Specified by:
    
    isInt in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type int. If the position is at the end of the data buffer, the current position is checked.
  - isIntArray
```
public boolean isIntArray()
```
    Specified by:
    
    isIntArray in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type int[]. If the position is at the end of the data buffer, the current position is checked.
  - isLong
```
public boolean isLong()
```
    Specified by:
    
    isLong in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type long. If the position is at the end of the data buffer, the current position is checked.
  - isLongArray
```
public boolean isLongArray()
```
    Specified by:
    
    isLongArray in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type long[]. If the position is at the end of the data buffer, the current position is checked.
  - isString
```
public boolean isString()
```
    Specified by:
    
    isString in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type String. If the position is at the end of the data buffer, the current position is checked.
  - isStringArray
```
public boolean isStringArray()
```
    Specified by:
    
    isStringArray in interface IForteSocket
    
    Returns:
    
    true if value at next position is of type String[]. If the position is at the end of the data buffer, the current position is checked.
  - iterator
```
public java.util.Iterator<java.lang.Object> iterator()
```
    Description copied from interface: IForteSocket
    
    Use this method with caution. It is recommended to use the class's type-safe built-in iteration methods instead.
    
    Specified by:
    
    iterator in interface IForteSocket
    
    Returns:
    
    Iterator over the elements in this buffer in proper sequence.
    
    See Also:
    
    #isDouble()}, {@link #getDouble()} {@link #isDoubleArray()}, {@link #getDoubleArray()}, {@link #getBool()}, {@link #getInt()} {@link #getLong()}, {@link #getFloat()}, {@link #getString()}, {@link #getDateAndTime()}, {@link #getLocalDateTime()}, {@link #getBoolArray()}, {@link #getIntArray()} {@link #getLongArray()}, {@link #getFloatArray()}, {@link #getStringArray()}, {@link #getDateAndTimeArray()}, {@link #getLocalDateTimeArray()}, etc.
  - put
```
public boolean put(boolean value)
```
    Description copied from interface: IForteSocket
    
    Adds a boolean to be sent to FORTE as an IEC 61499 BOOLEAN to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(boolean[] value)
```
    Description copied from interface: IForteSocket
    
    Adds a boolean[] array to be sent to FORTE as an IEC 61499 BOOLEAN array to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(DateAndTime value)
```
    Description copied from interface: IForteSocket
    
    Adds a DateAndTime object to be sent to FORTE as IEC 61499 DATE_AND_TIME data to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(DateAndTime[] value)
```
    Description copied from interface: IForteSocket
    
    Adds a DateAndTime[] array to be sent to FORTE as an IEC 61499 DATE_AND_TIME array to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(double value)
```
    Description copied from interface: IForteSocket
    
    Adds a double to be sent to FORTE as IEC 61499 LREAL to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(double[] value)
```
    Description copied from interface: IForteSocket
    
    Adds a double[] array to be sent to FORTE as an IEC 61499 LREAL array to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(float value)
```
    Description copied from interface: IForteSocket
    
    Adds a float to be sent to FORTE as IEC 61499 REAL to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(float[] value)
```
    Description copied from interface: IForteSocket
    
    Adds a float[] array to be sent to FORTE as an IEC 61499 REAL array to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(int value)
```
    Description copied from interface: IForteSocket
    
    Adds a 32 bit int to be sent to FORTE as one of the IEC 61499 32 bit integer types to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Parameters:
    
    value - Value to be converted to byte data
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(int[] value)
```
    Description copied from interface: IForteSocket
    
    Adds a 32 bit int[] array to be sent to FORTE as an IEC 61499 32 bit integer array to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(long value)
```
    Description copied from interface: IForteSocket
    
    Adds a 64 bit long integer to be sent to FORTE as an IEC 61499 integer to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(long[] value)
```
    Description copied from interface: IForteSocket
    
    Adds a 64 bit long[] integer array to be sent to FORTE as an IEC 61499 integer array to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(java.lang.String value)
```
    Description copied from interface: IForteSocket
    
    Adds a String to be sent to FORTE as an IEC 61499 STRING to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - put
```
public boolean put(java.lang.String[] value)
```
    Description copied from interface: IForteSocket
    
    Adds a String[] array to be sent to FORTE as an IEC 61499 STRING array to buffer
    
    Specified by:
    
    put in interface IForteSocket
    
    Returns:
    
    true if more data can be added, false if not
  - reset
```
public void reset()
```
    Description copied from interface: IForteSocket
    
    Resets the position to its initialized state and clears the internal byte buffer.
    
    Specified by:
    
    reset in interface IForteSocket
  - rewind
```
public void rewind()
```
    Description copied from interface: IForteSocket
    
    Resets the position to its initialized state.
    
    Specified by:
    
    rewind in interface IForteSocket
  - setDateAndTimeReference
```
public void setDateAndTimeReference(DateAndTime dt)
```
    Description copied from interface: IForteSocket
    
    Sets a DateAndTime object as reference for any new DateAndTime objects received.
    
    Specified by:
    
    setDateAndTimeReference in interface IForteSocket
  - setPosition
```
public void setPosition(int position)
```
    Description copied from interface: IForteSocket
    
    Sets the position. The position is limited to [-1, IForteSocket.getNumDataValues()]. -1 is the initialized state.
    
    Specified by:
    
    setPosition in interface IForteSocket
  - sendData
```
public void sendData()
              throws java.io.IOException
```
    Description copied from interface: IForteSocket
    
    Writes the data stored within this instance's byte buffer to a DataOutputStream. IForteSocket.reset() is called after completing the write operation. Before calling this method, the data output layer must be set using #setOutputLayer(AbstractCommunicationLayer).
    
    Specified by:
    
    sendData in interface IForteSocket
    
    Throws:
    
    java.io.IOException
  - sendRsp
```
public void sendRsp()
             throws java.io.IOException
```
    Description copied from interface: IForteSocket
    
    Sends a response (e.g., a single byte with the value of 5)
    
    Specified by:
    
    sendRsp in interface IForteSocket
    
    Throws:
    
    java.io.IOException
  - disconnect
```
public void disconnect()
                throws java.io.IOException
```
    Description copied from interface: IForteSocket
    
    Closes the connection.
    
    Specified by:
    
    disconnect in interface IForteSocket
    
    Throws:
    
    java.io.IOException
  - openConnection
```
public boolean openConnection(CommLayerParams params)
                       throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Opens the connection and sets up the communication stack. If necessary, additional layers below this layer are created.
    
    Specified by:
    
    openConnection in interface ICommunicationLayer
    
    Overrides:
    
    openConnection in class AbstractCommunicationLayer
    
    Parameters:
    
    params - CommLayerParams object holding the connection info
    
    Returns:
    
    true if the connection was opened successfully, false otherwise
    
    Throws:
    
    java.io.IOException
  - closeConnection
```
public boolean closeConnection()
                        throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Closes this layer and calls closeConnection() on the layer below.
    
    Specified by:
    
    closeConnection in interface ICommunicationLayer
    
    Overrides:
    
    closeConnection in class AbstractCommunicationLayer
    
    Returns:
    
    true if the connection was closed successfully, false otherwise
    
    Throws:
    
    java.io.IOException
  - sendData
```
public void sendData(byte[] data,
                     int off,
                     int len)
              throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Performs the necessary actions for sending data.
    
    Specified by:
    
    sendData in interface ICommunicationLayer
    
    Overrides:
    
    sendData in class AbstractCommunicationLayer
    
    Parameters:
    
    data - Byte array containing the data
    
    len - Length of the data to be sent
    
    Throws:
    
    java.io.IOException
  - recvData
```
public void recvData()
              throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Performs the necessary actions for receiving data.
    
    Specified by:
    
    recvData in interface ICommunicationLayer
    
    Specified by:
    
    recvData in interface IForteSocket
    
    Overrides:
    
    recvData in class AbstractCommunicationLayer
    
    Throws:
    
    java.io.IOException
  - readByte
```
public byte readByte()
              throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Reads a byte from the communication layer below or the connected device if this layer is the bottom layer.
    
    Specified by:
    
    readByte in interface ICommunicationLayer
    
    Overrides:
    
    readByte in class AbstractCommunicationLayer
    
    Throws:
    
    java.io.IOException
  - readLong
```
public long readLong()
              throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Reads 4 bytes from the communication layer below or the connected device if this layer is the bottom layer.
    
    Specified by:
    
    readLong in interface ICommunicationLayer
    
    Overrides:
    
    readLong in class AbstractCommunicationLayer
    
    Returns:
    
    the long value represented by the 4 bytes.
    
    Throws:
    
    java.io.IOException
  - readDouble
```
public double readDouble()
                  throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Reads 8 bytes from the communication layer below or the connected device if this layer is the bottom layer.
    
    Specified by:
    
    readDouble in interface ICommunicationLayer
    
    Overrides:
    
    readDouble in class AbstractCommunicationLayer
    
    Returns:
    
    the double value represented by the 8 bytes.
    
    Throws:
    
    java.io.IOException
  - readFloat
```
public float readFloat()
                throws java.io.IOException
```
    Description copied from interface: ICommunicationLayer
    
    Reads 4 bytes from the communication layer below or the connected device if this layer is the bottom layer.
    
    Specified by:
    
    readFloat in interface ICommunicationLayer
    
    Overrides:
    
    readFloat in class AbstractCommunicationLayer
    
    Returns:
    
    the float value represented by the 4 bytes.
    
    Throws:
    
    java.io.IOException
  - isConnected
```
public boolean isConnected()
```
    Specified by:
    
    isConnected in interface IForteSocket
    
    Returns:
    
    true if the socket is connected, false otherwise.
  - getBelow
```
public ICommunicationLayer getBelow()
```
    Specified by:
    
    getBelow in interface ICommunicationLayer
    
    Overrides:
    
    getBelow in class AbstractCommunicationLayer
    
    Returns:
    
    the communication layer below the two ForteDataBufferLayers below this layer.
  - setBelow
```
public void setBelow(ICommunicationLayer below)
```
    Description copied from interface: ICommunicationLayer
    
    Sets the communication layer below this layer.
    
    Specified by:
    
    setBelow in interface ICommunicationLayer
    
    Overrides:
    
    setBelow in class AbstractCommunicationLayer

Class CommFunctionBlockLayer

Constructor Summary

Method Summary

Methods inherited from class de.htw.berlin.polysun4diac.forte.comm.AbstractCommunicationLayer

Methods inherited from class java.lang.Object

Constructor Detail

CommFunctionBlockLayer

Method Detail

array

capacity

getBool

getBoolArray

getDateAndTime

getDateAndTimeArray

getDouble

getDoubleArray

getFloat

getFloatArray

getInt

getIntArray

getLong

getLongArray

getNumDataValues

getPosition

getString

getStringArray

getTypeAtNextPosition

getTypeAtPosition

incrementPosition

isArrayAtPosition

isBool

isBoolArray

isDateAndTime

isDateAndTimeArray

isDouble

isDoubleArray

isFloat

isFloatArray

isInt

isIntArray

isLong

isLongArray

isString

isStringArray

iterator

put

put

put

put

put

put

put

put

put

put

put

put

put

put

reset

rewind

setDateAndTimeReference

setPosition

sendData

sendRsp

disconnect

openConnection

closeConnection

sendData

recvData

readByte

readLong

readDouble

readFloat

isConnected

getBelow

setBelow