org.lsst.ccs.localdb.dao

Class LocaldbFacade

java.lang.Object

org.lsst.ccs.localdb.dao.LocaldbFacade

public class LocaldbFacade
extends Object

Simplistic access to the database, through static methods.

Author:

LSST CCS Team

Method Summary

Modifier and Type	Method and Description
static AgentDesc	getAgentDesc(org.lsst.ccs.bus.data.AgentInfo agentInfo, Session sess) Returns the persistent AgentDesc corresponding to the AgentInfo.
static AgentState	getAgentState(AgentDesc ad, org.lsst.ccs.bus.states.StateBundle sb, Session sess) Returns the AgentState corresponding to the given stateBundle.
static AlertDesc	getAlertDesc(AgentDesc agentDesc, String alertId, Session sess) Looks for a persisted AlertDesc corresponding to the given parameters.
static AlertDesc	getAlertDescOrPersist(AgentDesc agentDesc, org.lsst.ccs.bus.data.Alert alert, Session sess)
static StatData	getStatDataOrNull(StatDesc sd, StatTimeInterval sti, Session sess) Retrieves a StatData entity corresponding to the given StatDesc and StatTimeInterval.
static StatTimeInterval	getStatTimeInterval(long binWidth, long dataTime, Session sess)

Methods inherited from class java.lang.Object

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

Method Detail

getAgentDesc

public static AgentDesc getAgentDesc(org.lsst.ccs.bus.data.AgentInfo agentInfo,
                                     Session sess)

Returns the persistent AgentDesc corresponding to the AgentInfo. If not found in the first place, creates it and persists it.

Parameters:

agentInfo -

sess -

Returns:

an AgentDesc in persisted state.

getAlertDescOrPersist

public static AlertDesc getAlertDescOrPersist(AgentDesc agentDesc,
                                              org.lsst.ccs.bus.data.Alert alert,
                                              Session sess)

Parameters:

agentDesc -

alert -

sess -

Returns:

an AlertDesc in persisted state.

getAlertDesc

public static AlertDesc getAlertDesc(AgentDesc agentDesc,
                                     String alertId,
                                     Session sess)

Looks for a persisted AlertDesc corresponding to the given parameters. Returns null if not found.

Parameters:

agentDesc -

alertId -

sess -

Returns:

the corresponding AlertDesc, or null if not found.

getAgentState

public static AgentState getAgentState(AgentDesc ad,
                                       org.lsst.ccs.bus.states.StateBundle sb,
                                       Session sess)

Returns the AgentState corresponding to the given stateBundle. An AgentState is the combination of the 5 framework-defined states and of additional subsystem-developer-defined states.

Parameters:

ad - the agent description in persisted state

sb -

sess -

Returns:

an AgentState in persisted state.

getStatTimeInterval

public static StatTimeInterval getStatTimeInterval(long binWidth,
                                                   long dataTime,
                                                   Session sess)

getStatDataOrNull

public static StatData getStatDataOrNull(StatDesc sd,
                                         StatTimeInterval sti,
                                         Session sess)

Retrieves a StatData entity corresponding to the given StatDesc and StatTimeInterval.

Parameters:

sd - The StatDesc entity

sti - the StatTimeInterval

Returns:

a StatData or null if no StatData was found