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https://issues.apache.org/jira/browse/PLC4X-288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rogier Cobben updated PLC4X-288:
--------------------------------
Description:
The Mock driver is usefull for developing applications without available
hardware. Reads from Mock devices work, but writes seem broken.
Scenario:
implement *MockDevice* interface and the *write* method. See that this device
is set in the connection using the *MockConnection*.*setDevice* method.
When a WriteRequest is issued on the connection, the *MockDevice*.*write*
method is indeed called, but the *value* parameter is always _*null*_. The
given value to write is not passed through.
Debugging and looking into the sourcecode shows following:
*MockConnection.write* uses following statement to retrieve the value:
{code:java}
// MockConnection:147
((MockField) writeRequest.getField(name)).getPlcValue()
{code}
This retrieves the *plcValue* member from the MockField object. This
*plcValue* is written to by constructor *MockField(String address, MockPlcValue
plcValue)* only. However, I did not find any call to this constructor.
Note:
Other Drivers seem to use
{code:java}
writeRequest.getPlcValue()
{code}
instead and do not have a value member in the Field class. (e.g. Simulator,
Modbus )
was:
The Mock driver is usefull for developing applications without available
hardware. Reads from Mock devices work, but writes seem broken.
Scenario:
implement *MockDevice* interface class and the *write* method. See that this
device is set in the connection using the *MockConnection*.*setDevice* method.
When a WriteRequest is issued on the connection, the *MockDevice*.*write*
method is indeed called, but the *value* parameter is always _*null*_. The
given value to write is not passed through.
Debugging and looking into the sourcecode shows following:
*MockConnection.write* uses following statement to retrieve the value:
{code:java}
// MockConnection:147
((MockField) writeRequest.getField(name)).getPlcValue()
{code}
This retrieves the *plcValue* member from the MockField object. This
*plcValue* is written to by constructor *MockField(String address, MockPlcValue
plcValue)* only. However, I did not find any call to this constructor.
Note:
Other Drivers seem to use
{code:java}
writeRequest.getPlcValue()
{code}
instead and do not have a value member in the Field class. (e.g. Simulator,
Modbus )
> Mock driver always writes null value
> ------------------------------------
>
> Key: PLC4X-288
> URL: https://issues.apache.org/jira/browse/PLC4X-288
> Project: Apache PLC4X
> Issue Type: Bug
> Components: Testing
> Affects Versions: 0.8.0
> Reporter: Rogier Cobben
> Priority: Major
>
> The Mock driver is usefull for developing applications without available
> hardware. Reads from Mock devices work, but writes seem broken.
> Scenario:
> implement *MockDevice* interface and the *write* method. See that this device
> is set in the connection using the *MockConnection*.*setDevice* method.
> When a WriteRequest is issued on the connection, the *MockDevice*.*write*
> method is indeed called, but the *value* parameter is always _*null*_. The
> given value to write is not passed through.
> Debugging and looking into the sourcecode shows following:
> *MockConnection.write* uses following statement to retrieve the value:
>
> {code:java}
> // MockConnection:147
> ((MockField) writeRequest.getField(name)).getPlcValue()
> {code}
> This retrieves the *plcValue* member from the MockField object. This
> *plcValue* is written to by constructor *MockField(String address,
> MockPlcValue plcValue)* only. However, I did not find any call to this
> constructor.
>
> Note:
> Other Drivers seem to use
> {code:java}
> writeRequest.getPlcValue()
> {code}
> instead and do not have a value member in the Field class. (e.g. Simulator,
> Modbus )
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