Package com.inductiveautomation.ignition.gateway.tags.distributed

Class TagProviderService2VersionAdapter.ParameterVersionJavaSerializationCodec

java.lang.Object

com.inductiveautomation.ignition.gateway.tags.distributed.TagProviderService2VersionAdapter.ParameterVersionJavaSerializationCodec

All Implemented Interfaces:

com.inductiveautomation.metro.api.MessageCodec

Enclosing class:

TagProviderService2VersionAdapter

protected static class TagProviderService2VersionAdapter.ParameterVersionJavaSerializationCodec
extends Object
implements com.inductiveautomation.metro.api.MessageCodec

This class does some trickery to avoid sending our new Parameters and ParameterValues to old gateays. It uses a custom serializer to swap those out for objects that are compatible with older version.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	TagProviderService2VersionAdapter.ParameterVersionJavaSerializationCodec.CustomObjectOutputStream

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ID
protected static final org.apache.log4j.Logger	logger

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ParameterVersionJavaSerializationCodec()

Method Summary

Modifier and Type	Method	Description
protected ObjectInputStream	createObjectInputStream(InputStream is)	Note that when Metro is used with Ignition, this method never gets called.
Object	decode(InputStream inputStream)
InputStream	encode(Object data)
String	getId()
protected byte[]	serialize(Serializable object)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ID

public static final String ID

See Also:

• Constant Field Values

logger

protected static final org.apache.log4j.Logger logger

Constructor Details

ParameterVersionJavaSerializationCodec

protected ParameterVersionJavaSerializationCodec()

Method Details

getId

public String getId()

Specified by:

getId in interface com.inductiveautomation.metro.api.MessageCodec

serialize

protected byte[] serialize(Serializable object)
                    throws IOException

Throws:

IOException

encode

public InputStream encode(Object data)
                   throws Exception

Specified by:

encode in interface com.inductiveautomation.metro.api.MessageCodec

Throws:

Exception

decode

public Object decode(InputStream inputStream)
              throws Exception

Specified by:

decode in interface com.inductiveautomation.metro.api.MessageCodec

Throws:

Exception

createObjectInputStream

protected ObjectInputStream createObjectInputStream(InputStream is)
                                             throws IOException

Note that when Metro is used with Ignition, this method never gets called. Instead, ModuleSerializationCodec.createObjectInputStream gets called.

Throws:

IOException