Package org.epics.archiverappliance.retrieval

Class RetrievalState

java.lang.Object

org.epics.archiverappliance.retrieval.RetrievalState

Direct Known Subclasses:

SampleRetrievalState

public class RetrievalState
extends Object

Constructor Summary

Constructors

Constructor	Description
RetrievalState(ConfigService configService)

Method Summary

Modifier and Type	Method	Description
List<DataSourceforPV>	getDataSources(BasicContext context, String pvName, PVTypeInfo typeInfo, Timestamp start, Timestamp end, javax.servlet.http.HttpServletRequest req)	Get the data sources for a PV in the order of their lifetime id...
static boolean	includeExternalServers(javax.servlet.http.HttpServletRequest req)	To prevent infinite loops and such, we can specify that we do not proxy to external servers for this data retrieval request.

Methods inherited from class java.lang.Object

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

Constructor Detail

RetrievalState

public RetrievalState(ConfigService configService)

Method Detail

getDataSources

public List<DataSourceforPV> getDataSources(BasicContext context,
                                            String pvName,
                                            PVTypeInfo typeInfo,
                                            Timestamp start,
                                            Timestamp end,
                                            javax.servlet.http.HttpServletRequest req)
                                     throws IOException

Get the data sources for a PV in the order of their lifetime id...

Parameters:

context - BasicContext

pvName - The name of PV.

typeInfo - PVTypeInfo

start - Timestamp

end - Timestamp

req - HttpServletRequest

Returns:

the data source for a PV

Throws:

IOException -  

includeExternalServers

public static boolean includeExternalServers(javax.servlet.http.HttpServletRequest req)

To prevent infinite loops and such, we can specify that we do not proxy to external servers for this data retrieval request.

Parameters:

req - HttpServletRequest

Returns:

boolean True or False