com.inductiveautomation.ignition.gateway.sqltags.contexts

Class BasicTagEvaluationContext

java.lang.Object

com.inductiveautomation.ignition.gateway.sqltags.contexts.BasicTagEvaluationContext

All Implemented Interfaces:

TagEvaluationContext, TagWriteContext

public class BasicTagEvaluationContext
extends java.lang.Object
implements TagEvaluationContext

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Map<java.lang.String,HistoricalDataList>	historicalValues

Constructor Summary

Constructors

Constructor and Description
BasicTagEvaluationContext()

Method Summary

Modifier and Type	Method and Description
void	addValueChange(TagPropertyValue value) Registers that a tag's value has changed.
protected HistoricalDataList	createHistoricalDataList()
int	executeWrites(OPCManager opcManager, SQLTagsManager sqltManager, org.apache.log4j.Logger logger) Executes any writes, etc.
java.util.Map<java.lang.String,? extends HistoricalData>	getHistoricalData()
int	getOPCValueChanges()
java.util.List<TagOPCWriteRequest>	getOPCWriteList() Returns a copy of list of writes to perform.
java.util.List<WriteRequest<TagPath>>	getSQLTagWriteList()
java.util.List<TagPropertyValue>	getValueChanges() Returns a list of tags whose values have changed.
void	incrementOPCValueChanges() Increments the count of changed opc items.
void	reset()
void	resetWriteRequests()
void	storeHistoricalValue(java.lang.String historicalProvider, HistoricalTagValue value)
java.lang.String	toString()
void	writeOPCValue(TagOPCWriteRequest value) Adds a write to perform to the write list.
void	writeSQLTagValue(AsyncWriteRequest<TagPath> value)

Methods inherited from class java.lang.Object

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

Field Detail

historicalValues

protected java.util.Map<java.lang.String,HistoricalDataList> historicalValues

Constructor Detail

BasicTagEvaluationContext

public BasicTagEvaluationContext()

Method Detail

getOPCWriteList

public java.util.List<TagOPCWriteRequest> getOPCWriteList()

Returns a copy of list of writes to perform.

getSQLTagWriteList

public java.util.List<WriteRequest<TagPath>> getSQLTagWriteList()

writeOPCValue

public void writeOPCValue(TagOPCWriteRequest value)

Adds a write to perform to the write list.

Specified by:

writeOPCValue in interface TagWriteContext

Parameters:

value -

writeSQLTagValue

public void writeSQLTagValue(AsyncWriteRequest<TagPath> value)

Specified by:

writeSQLTagValue in interface TagWriteContext

storeHistoricalValue

public void storeHistoricalValue(java.lang.String historicalProvider,
                                 HistoricalTagValue value)

Specified by:

storeHistoricalValue in interface TagEvaluationContext

createHistoricalDataList

protected HistoricalDataList createHistoricalDataList()

getHistoricalData

public java.util.Map<java.lang.String,? extends HistoricalData> getHistoricalData()

getValueChanges

public java.util.List<TagPropertyValue> getValueChanges()

Returns a list of tags whose values have changed.

Returns:

addValueChange

public void addValueChange(TagPropertyValue value)

Registers that a tag's value has changed.

Specified by:

addValueChange in interface TagEvaluationContext

Parameters:

path -

incrementOPCValueChanges

public void incrementOPCValueChanges()

Increments the count of changed opc items. Used to track how much opc data is coming through each execution.

getOPCValueChanges

public int getOPCValueChanges()

resetWriteRequests

public void resetWriteRequests()

reset

public void reset()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

executeWrites

public int executeWrites(OPCManager opcManager,
                         SQLTagsManager sqltManager,
                         org.apache.log4j.Logger logger)

Executes any writes, etc. that are outstanding, writing the results to the log. Returns the number of writes performed.

Parameters:

context -

logger -