com.isti.trinetwatch.station
Class Station

java.lang.Object
  com.isti.trinetwatch.station.Station

public class Station
extends java.lang.Object

Class Station manages station-specific information.

Field Summary

static java.lang.String	statusParamName Name of server-generated parameter for station status level.
static java.lang.String	usageParamName Name of server-generated parameter for station usage level.

Constructor Summary

Station(java.lang.String shortName, UsageLevelTag defaultUsageLevel, RuleSet ruleSetObj)
Creates a new station object.

Station(java.lang.String shortName, UsageLevelTag defaultUsageLevel, RuleSet ruleSetObj, java.lang.String longName, java.lang.String helpString, java.util.Vector groupNamesVec)
Creates a new station object.

Station(java.lang.String shortName, UsageLevelTag defaultUsageLevel, RuleSet ruleSetObj, java.lang.String longName, java.lang.String helpString, java.util.Vector groupNamesVec, StaticParamTable cfgParams)
Creates a new station object.

Method Summary

boolean	addCfgParam(StaticParameter param) Adds the given static parameter object to the configuration parameter table for the station.
boolean	addCfgParam(java.lang.String nameStr, java.lang.String dataStr) Creates a new StaticParameter object and adds it to the configuration parameter table for the station.
boolean	addStaticParam(StaticParameter param) Adds the given static parameter object to the static parameter table for the station.
boolean	addStaticParam(java.lang.String nameStr, java.lang.String dataStr) Creates a new StaticParameter object and adds it to the static parameter table for the station.
void	changeRuleSet(RuleSet ruleSetObj) Changes the rule set for this station.
boolean	checkSetControlFlag() Attempts to set the control flag to indicate that a control operation is in progress.
void	clearControlFlag(java.lang.String message) Clears the control flag to indicate that a control operation is no longer in progress.
void	closeParamHistories() Closes the history tracking for the parameters for this station, releasing resources allocated by their archive managers.
boolean	compRuleSetName(java.lang.String name) Compares the name associated with the current rule set for this station against the given name.
boolean	containsCfgParamKey(java.lang.String str) Determines if the given parameter name key exists in the configuration parameter table.
boolean	containsDynamicParam(DynamicParamHolder dParam) Determines if the given dynamic parameter holder object is held by this station.
boolean	containsStaticParamKey(java.lang.String str) Determines if the given parameter name key exists in the static parameter table.
void	enterStationInfo(Station srcStationObj) Enters updated information from the given 'Station' object into this object.
ArchiveParameterFlag	getArchiveParameterFlag(java.lang.String paramNameStr) Get the archive-parameter flag for the given dynamic-parameter-name.
java.lang.String	getCacheLevelsAtTimeStr(long timeVal) Returns a string containing the status and usage level names for the given time value, fetched from the levels cache.
StaticParameter	getCfgParam(java.lang.String str) Returns the static parameter object associated with the given key in the configuration parameter table.
StaticParamTable	getCfgParams() Returns the configuration parameters for the station.
java.util.Enumeration	getCfgParamsEnum() Returns an enumeration of configuration parameters for the station.
boolean	getControlFlag() Returns the control flag for the station.
int	getControlTimeoutSec() Returns the timeout value (in seconds) associated with the usage control change operation in progress.
java.lang.String	getDisplayString() Returns a display string containing information about the station and its basic fields.
java.lang.String	getDisplayString(boolean cfgParamsFlag) Returns a display string containing information about the station and its various fields.
boolean	getDynamicCreatedFlag() Determines if this station was dynamically created.
DynamicParamHolder	getDynamicParamHolder(java.lang.String str) Returns the dynamic parameter holder object associated with the given key.
java.util.Vector	getDynamicParamsVec(long timeVal) Returns a Vector of dynamic parameter objects for the station that have been updated.
java.lang.String	getGroupNamesString() Returns a string of group names for the station.
java.util.Vector	getGroupNamesVec() Returns the group names Vector for the station.
java.lang.String	getHelpString() Returns the help string for the station.
java.lang.String	getLongName() Returns the long name for the station.
java.util.Vector	getParamHistoryVec(java.lang.String paramName, long startTime, long endTime) Returns (for the given parameter) a new Vector containing 'ValueTimeBlock' objects with timestamps in the specified range.
StatusLevelTag	getRawStatusLevel() Returns the "raw" status level for this station.
java.lang.String	getShortName() Returns the short name for the station.
StaticParameter	getStaticParam(java.lang.String str) Returns the static parameter object associated with the given key in the static parameter table.
java.util.Enumeration	getStaticParamsEnum() Returns an enumeration of static parameters for the station.
long	getStationTimeValue() Returns the time of the last change to the station.
StatusLevelTag	getStatusLevel() Returns the status level for the station.
StatusLevelTag	getStatusLevel(java.lang.String agentName) Returns the status level for the station.
DynamicParamHolder	getStatusParamHolder() Returns the parameter-holder object used to track status-level history.
long	getStatusUsageTimeValue() Returns the time of the last change to the status or usage level for the station.
long	getStatusUsageTimeValue(java.lang.String agentName) Returns the time of the last change to the status or usage level for this station's table of parameters for the given agent name.
UsageLevelTag	getUsageLevel() Returns the usage level for the station.
DynamicParamHolder	getUsageParamHolder() Returns the parameter-holder object used to track usage-level history.
java.lang.String	getUsageResultMsg() Returns a message string for the client reporting the result of the last usage-control change request for this station.
boolean	hasHelpString() Determines if the help string is available for the station.
boolean	hasLongName() Determines if the long name is available for the station.
boolean	hasRuleSet() Determines if the rule set is available for the station.
boolean	isParamInRuleSet(java.lang.String paramNameStr) Determines if an entry for the given dynamic parameter name exists in the station's rule set.
void	loadDynParamsFromArchive(ParamValues paramValuesObj, StatusLevelTable sLevelTableObj, UsageLevelTable uLevelTableObj, GroupTable agentsTable, long minTimeVal) Loads the status level, usage level and dynamic parameters from the newest items in the history archive.
void	preloadAndEnableLevelsCache(ParamValues paramValuesObj, long baseTimeVal, StatusLevelTable sLevelTableObj, UsageLevelTable uLevelTableObj) Preloads the station-levels cache from the history archive and enables it.
void	purgeOldLevelsCacheEntries(long timeVal) Purges entries from the station-levels cache that are older than the given time value.
StaticParameter	removeCfgParam(java.lang.String str) Removes the static parameter object associated with the given key in the static parameter table.
StaticParameter	removeStaticParam(java.lang.String str) Removes the static parameter object associated with the given key in the static parameter table.
void	setControlTimeoutSec(int val) Sets the timeout value (in seconds) associated with the usage control change operation in progress.
void	setDynamicCreatedFlag() Sets the dynamically-created-station flag to true.
void	setGroupNamesVec(java.util.Vector vec) Sets the group names Vector for the station.
void	setHelpString(java.lang.String str) Sets the help string for the station.
void	setLongName(java.lang.String str) Sets the long name for the station.
void	setUsageLevel(ParamValues paramValuesObj, UsageLevelTag uLevel) Sets the usage level variable for this station.
java.lang.String	toString() Returns the short station name.
boolean	updateDynamicParam(ParamValues paramValues, DynamicParamHolder dParamHolderObj) Updates or adds a parameter to the dynamic parameter table for the station.
boolean	updateDynamicParam(ParamValues paramValues, java.lang.String nameStr, java.lang.String dataStr, AgentInfo agentObj) Updates or adds a parameter to the dynamic parameter table for the station.
protected boolean	updateDynamicParam(ParamValues paramValues, java.lang.String nameStr, java.lang.String dataStr, AgentInfo agentObj, DynamicParamHolder dParamHolderObj) Updates or adds a parameter to the dynamic parameter table for the station.
protected void	updateTimeValues() Updates the time values.

Methods inherited from class java.lang.Object

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

Field Detail

statusParamName

public static final java.lang.String statusParamName

Name of server-generated parameter for station status level.

See Also:

Constant Field Values

usageParamName

public static final java.lang.String usageParamName

Name of server-generated parameter for station usage level.

See Also:

Constant Field Values

Constructor Detail

Station

public Station(java.lang.String shortName,
               UsageLevelTag defaultUsageLevel,
               RuleSet ruleSetObj,
               java.lang.String longName,
               java.lang.String helpString,
               java.util.Vector groupNamesVec,
               StaticParamTable cfgParams)

Creates a new station object.

Parameters:

shortName - short name for station (such as "ABC").

defaultUsageLevel - the default usage level or null if none.

ruleSetObj - rule-set object for station.

longName - long name for station.

helpString - help string for station.

groupNamesVec - a vector of String objects containing the group names associated with the station.

cfgParams - a table of configuration parameters read from the "stations_info.ini" file.

Station

public Station(java.lang.String shortName,
               UsageLevelTag defaultUsageLevel,
               RuleSet ruleSetObj,
               java.lang.String longName,
               java.lang.String helpString,
               java.util.Vector groupNamesVec)

Creates a new station object.

Parameters:

shortName - short name for station (such as "ABC").

defaultUsageLevel - the default usage level or null if none.

ruleSetObj - rule-set object for station.

longName - long name for station.

helpString - help string for station.

groupNamesVec - a vector of String objects containing the group names associated with the station.

Station

public Station(java.lang.String shortName,
               UsageLevelTag defaultUsageLevel,
               RuleSet ruleSetObj)

Creates a new station object.

Parameters:

shortName - short name for station (such as "ABC").

defaultUsageLevel - the default usage level or null if none.

ruleSetObj - rule-set object for station.

Method Detail

enterStationInfo

public void enterStationInfo(Station srcStationObj)

Enters updated information from the given 'Station' object into this object.

Parameters:

srcStationObj - source 'Station' object to use.

addCfgParam

public boolean addCfgParam(java.lang.String nameStr,
                           java.lang.String dataStr)

Creates a new StaticParameter object and adds it to the configuration parameter table for the station.

Parameters:

nameStr - the name of the parameter.

dataStr - the data string for the parameter.

Returns:

true if successful, false if a parameter with the same name already exists in table or if an invalid parameter is detected.

addCfgParam

public boolean addCfgParam(StaticParameter param)

Adds the given static parameter object to the configuration parameter table for the station.

Parameters:

param - the parameter.

Returns:

true if successful, false if a parameter with the same name already exists in table or if an invalid parameter is detected.

getCfgParam

public StaticParameter getCfgParam(java.lang.String str)

Returns the static parameter object associated with the given key in the configuration parameter table.

Parameters:

str - a string matching the contents of the 'name' field of the desired parameter object.

Returns:

The handle of the parameter object or null if no matching object was found.

containsCfgParamKey

public boolean containsCfgParamKey(java.lang.String str)

Determines if the given parameter name key exists in the configuration parameter table.

Parameters:

str - the parameter name key.

Returns:

true if the given parameter name key exists in the configuration parameter table, false otherwise.

removeCfgParam

public StaticParameter removeCfgParam(java.lang.String str)

Removes the static parameter object associated with the given key in the static parameter table.

Parameters:

str - a string matching the contents of the 'name' field of the parameter object to be removed.

Returns:

The handle of the parameter object which was removed or null if no matching object was found.

getCfgParams

public StaticParamTable getCfgParams()

Returns the configuration parameters for the station.

Returns:

the configuration parameters for the station.

getCfgParamsEnum

public java.util.Enumeration getCfgParamsEnum()

Returns an enumeration of configuration parameters for the station.

Returns:

enumeration of configuration parameters for the station.

addStaticParam

public boolean addStaticParam(java.lang.String nameStr,
                              java.lang.String dataStr)

Creates a new StaticParameter object and adds it to the static parameter table for the station.

Parameters:

nameStr - the name of the parameter.

dataStr - the data string for the parameter.

Returns:

true if successful, false if a parameter with the same name already exists in table or if an invalid parameter is detected.

addStaticParam

public boolean addStaticParam(StaticParameter param)

Adds the given static parameter object to the static parameter table for the station.

Parameters:

param - the parameter.

Returns:

true if successful, false if a parameter with the same name already exists in table or if an invalid parameter is detected.

getStaticParam

public StaticParameter getStaticParam(java.lang.String str)

Returns the static parameter object associated with the given key in the static parameter table.

Parameters:

str - a string matching the contents of the 'name' field of the desired parameter object.

Returns:

The handle of the parameter object or null if no matching object was found.

containsStaticParamKey

public boolean containsStaticParamKey(java.lang.String str)

Determines if the given parameter name key exists in the static parameter table.

Parameters:

str - the parameter name key.

Returns:

true if the given parameter name key exists in the static parameter table, false otherwise.

removeStaticParam

public StaticParameter removeStaticParam(java.lang.String str)

Removes the static parameter object associated with the given key in the static parameter table.

Parameters:

str - a string matching the contents of the 'name' field of the parameter object to be removed.

Returns:

The handle of the parameter object which was removed or null if no matching object was found.

getStaticParamsEnum

public java.util.Enumeration getStaticParamsEnum()

Returns an enumeration of static parameters for the station.

Returns:

an enumeration of static parameters for the station.

updateDynamicParam

protected boolean updateDynamicParam(ParamValues paramValues,
                                     java.lang.String nameStr,
                                     java.lang.String dataStr,
                                     AgentInfo agentObj,
                                     DynamicParamHolder dParamHolderObj)

Updates or adds a parameter to the dynamic parameter table for the station. The data string is interpreted and converted to a numeric or boolean type when appropriate, otherwise it is used as a literal string. If the literal string is surrounded by quotes (""), they are removed. Error-warning and debug messages are sent to the global log file. If a 'dParamHolderObj' parameter is provided then its values are used instead of the 'nameStr', 'dataStr' and 'agentObj' parameter values.

Parameters:

paramValues - parameter values.

nameStr - the name of the dynamic parameter.

dataStr - the data string for the dynamic parameter.

agentObj - the agent information block object associated with the source agent for this parameter.

dParamHolderObj - dynamic-parameter holder object to use, or null to create a new one.

Returns:

true if successful, false if error (log message generated).

updateDynamicParam

public boolean updateDynamicParam(ParamValues paramValues,
                                  java.lang.String nameStr,
                                  java.lang.String dataStr,
                                  AgentInfo agentObj)

Updates or adds a parameter to the dynamic parameter table for the station. The data string is interpreted and converted to a numeric or boolean type when appropriate, otherwise it is used as a literal string. If the literal string is surrounded by quotes (""), they are removed. Error-warning and debug messages are sent to the global log file.

Parameters:

paramValues - parameter values.

nameStr - the name of the dynamic parameter.

dataStr - the data string for the dynamic parameter.

agentObj - the agent information block object associated with the source agent for this parameter.

Returns:

true if successful, false if error (log message generated).

updateDynamicParam

public boolean updateDynamicParam(ParamValues paramValues,
                                  DynamicParamHolder dParamHolderObj)

Updates or adds a parameter to the dynamic parameter table for the station.

Parameters:

paramValues - parameter values.

dParamHolderObj - dynamic-parameter holder object to use.

Returns:

true if successful, false if error (log message generated).

getDynamicParamHolder

public DynamicParamHolder getDynamicParamHolder(java.lang.String str)

Returns the dynamic parameter holder object associated with the given key.

Parameters:

str - a string matching the contents of the 'name' field of the desired parameter object.

Returns:

The handle of the parameter object or null if no matching object was found.

containsDynamicParam

public boolean containsDynamicParam(DynamicParamHolder dParam)

Determines if the given dynamic parameter holder object is held by this station.

Parameters:

dParam - the dynamic parameter.

Returns:

true if the given dynamic parameter holder object is held by this station, false otherwise.

getStatusLevel

public StatusLevelTag getStatusLevel(java.lang.String agentName)

Returns the status level for the station.

Parameters:

agentName - the name of agent use to fetch the status level, or null to fetch the status level for the station.

Returns:

The minimum status level found in the table of dynamic parameters for the station (or agent), or the "Unknown" status level tag if a status level cannot be fetched.

getStatusLevel

public StatusLevelTag getStatusLevel()

Returns the status level for the station.

Returns:

The minimum status level found in the table of dynamic parameters for the station, or the "Unknown" status level tag if a status level cannot be generated.

getRawStatusLevel

public StatusLevelTag getRawStatusLevel()

Returns the "raw" status level for this station. No warning is generated if the usage level for the station is not set, and 'null' will be returned if the status level cannot be fetched.

Returns:

the "raw" status level for this station.

compRuleSetName

public boolean compRuleSetName(java.lang.String name)

Compares the name associated with the current rule set for this station against the given name.

Parameters:

name - the name to compare against.

Returns:

true if the given name is the same as the name associated with the current rule set for this station.

changeRuleSet

public void changeRuleSet(RuleSet ruleSetObj)

Changes the rule set for this station.

Parameters:

ruleSetObj - the new rule set object to use.

getDynamicParamsVec

public java.util.Vector getDynamicParamsVec(long timeVal)

Returns a Vector of dynamic parameter objects for the station that have been updated.

Parameters:

timeVal - only dynamic parameter objects with timestamps greater than this value are returned.

Returns:

a Vector of DynamicParamHolder objects.

getParamHistoryVec

public java.util.Vector getParamHistoryVec(java.lang.String paramName,
                                           long startTime,
                                           long endTime)

Returns (for the given parameter) a new Vector containing 'ValueTimeBlock' objects with timestamps in the specified range. The start and end time parameter values are in seconds since 1/1/1970, and are "inclusive".

Parameters:

paramName - the name of specified parameter.

startTime - the start time for the range, or 0 for the beginning of the history.

endTime - the end time for the range, or 0 for the end of the history.

Returns:

A Vector of 'ValueTimeBlock' objects with timestamps in the specified range, or an empty Vector if no matching objects were found, or null if no matching parameter was found.

getStatusParamHolder

public DynamicParamHolder getStatusParamHolder()

Returns the parameter-holder object used to track status-level history.

Returns:

the parameter-holder object used to track status-level history, or null if none available.

getUsageParamHolder

public DynamicParamHolder getUsageParamHolder()

Returns the parameter-holder object used to track usage-level history.

Returns:

the parameter-holder object used to track usage-level history, or null if none available.

updateTimeValues

protected void updateTimeValues()

Updates the time values.

getStationTimeValue

public long getStationTimeValue()

Returns the time of the last change to the station. (In seconds since January 1, 1970.)

Returns:

the time of the last change to the station. (In seconds since January 1, 1970.)

getStatusUsageTimeValue

public long getStatusUsageTimeValue()

Returns the time of the last change to the status or usage level for the station. (In seconds since January 1, 1970.)

Returns:

the time of the last change to the status or usage level for the station. (In seconds since January 1, 1970.)

getStatusUsageTimeValue

public long getStatusUsageTimeValue(java.lang.String agentName)

Returns the time of the last change to the status or usage level for this station's table of parameters for the given agent name. (In seconds since January 1, 1970.) If the agent name is null or is not matched then the change value for the station as a whole is returned.

Parameters:

agentName - the agent name.

Returns:

the time of the last change to the status or usage level for this station's table of parameters for the given agent name.

isParamInRuleSet

public boolean isParamInRuleSet(java.lang.String paramNameStr)

Determines if an entry for the given dynamic parameter name exists in the station's rule set.

Parameters:

paramNameStr - parameter name to use.

Returns:

true if an entry for the given dynamic parameter name exists in the station's rule set; false if not.

getArchiveParameterFlag

public ArchiveParameterFlag getArchiveParameterFlag(java.lang.String paramNameStr)

Get the archive-parameter flag for the given dynamic-parameter-name.

Parameters:

paramNameStr - name of dynamic parameter.

Returns:

the archive-parameter flag.

getShortName

public java.lang.String getShortName()

Returns the short name for the station.

Returns:

the short name for the station.

getLongName

public java.lang.String getLongName()

Returns the long name for the station.

Returns:

the long name for the station.

hasHelpString

public boolean hasHelpString()

Determines if the help string is available for the station.

Returns:

true if it is available, false otherwise.

hasLongName

public boolean hasLongName()

Determines if the long name is available for the station.

Returns:

true if it is available, false otherwise.

hasRuleSet

public boolean hasRuleSet()

Determines if the rule set is available for the station.

Returns:

true if it is available, false otherwise.

setLongName

public void setLongName(java.lang.String str)

Sets the long name for the station.

Parameters:

str - the long name.

getHelpString

public java.lang.String getHelpString()

Returns the help string for the station.

Returns:

the help string for the station.

setHelpString

public void setHelpString(java.lang.String str)

Sets the help string for the station.

Parameters:

str - the help string.

getGroupNamesVec

public java.util.Vector getGroupNamesVec()

Returns the group names Vector for the station.

Returns:

the group names Vector for the station.

setGroupNamesVec

public void setGroupNamesVec(java.util.Vector vec)

Sets the group names Vector for the station.

Parameters:

vec - vector of grup names.

getGroupNamesString

public java.lang.String getGroupNamesString()

Returns a string of group names for the station. Each name is enclosed in double-quotes ("") and separated by a comma and space.

Returns:

a string of group names for the station.

getUsageLevel

public UsageLevelTag getUsageLevel()

Returns the usage level for the station. If no usage has been set then the "Undefined" usage level tag is returned.

Returns:

the usage level for the station.

setUsageLevel

public void setUsageLevel(ParamValues paramValuesObj,
                          UsageLevelTag uLevel)

Sets the usage level variable for this station. This function is thread synchronized.

Parameters:

paramValuesObj - object that implements the parameter-values interface, or null for none.

uLevel - the new usage level for this station; a value of 'null' is translated to 'UsageLevelTag.undefinedUsageTag'.

setControlTimeoutSec

public void setControlTimeoutSec(int val)

Sets the timeout value (in seconds) associated with the usage control change operation in progress.

Parameters:

val - the timeout value.

getControlTimeoutSec

public int getControlTimeoutSec()

Returns the timeout value (in seconds) associated with the usage control change operation in progress. If the timeout value has not been set (not yet received from the control agent) then the returned value will be -1.

Returns:

the timeout value.

getControlFlag

public boolean getControlFlag()

Returns the control flag for the station.

Returns:

true if a control operation is in progress, false if not.

checkSetControlFlag

public boolean checkSetControlFlag()

Attempts to set the control flag to indicate that a control operation is in progress. This function is thread synchronized. If the control request is granted (function returns 'true'), then the message string returned by 'getUsageResultMsg()' is cleared.

Returns:

true if the control flag was not previously set and is now set, false if the control flag is already set (meaning that another thread is performing a control operation.)

clearControlFlag

public void clearControlFlag(java.lang.String message)

Clears the control flag to indicate that a control operation is no longer in progress. This function is thread synchronized.

Parameters:

message - a message string for the client reporting the result of the usage-control change request. This string is returned by the 'getUsageResultMsg()' method.

getUsageResultMsg

public java.lang.String getUsageResultMsg()

Returns a message string for the client reporting the result of the last usage-control change request for this station. If the request is still in progress then an empty string is returned. This function is thread synchronized.

Returns:

usage result message.

toString

public java.lang.String toString()

Returns the short station name.

Overrides:

toString in class java.lang.Object

Returns:

the short station name.

setDynamicCreatedFlag

public void setDynamicCreatedFlag()

Sets the dynamically-created-station flag to true.

getDynamicCreatedFlag

public boolean getDynamicCreatedFlag()

Determines if this station was dynamically created.

Returns:

true if this station was dynamically created, false otherwise.

getDisplayString

public java.lang.String getDisplayString(boolean cfgParamsFlag)

Returns a display string containing information about the station and its various fields.

Parameters:

cfgParamsFlag - if true then information from the table of configuration file parameters is also included.

Returns:

a display string containing information about the station and its various fields.

getDisplayString

public java.lang.String getDisplayString()

Returns a display string containing information about the station and its basic fields. Information from the table of configuration file parameters is not included.

Returns:

a display string containing information about the station and its basic fields.

loadDynParamsFromArchive

public void loadDynParamsFromArchive(ParamValues paramValuesObj,
                                     StatusLevelTable sLevelTableObj,
                                     UsageLevelTable uLevelTableObj,
                                     GroupTable agentsTable,
                                     long minTimeVal)

Loads the status level, usage level and dynamic parameters from the newest items in the history archive.

Parameters:

paramValuesObj - object that implements the parameter-values interface.

sLevelTableObj - status-level table to use.

uLevelTableObj - usage-level table to use.

agentsTable - table of agent objects to use.

minTimeVal - minimum-acceptable time value for loaded parameters (in seconds since 1/1/1970).

preloadAndEnableLevelsCache

public void preloadAndEnableLevelsCache(ParamValues paramValuesObj,
                                        long baseTimeVal,
                                        StatusLevelTable sLevelTableObj,
                                        UsageLevelTable uLevelTableObj)

Preloads the station-levels cache from the history archive and enables it.

Parameters:

paramValuesObj - object that implements the parameter-values interface.

baseTimeVal - base time value for cache (seconds since 1/1/1970).

sLevelTableObj - status-level table for cache.

uLevelTableObj - usage-level table for cache.

getCacheLevelsAtTimeStr

public java.lang.String getCacheLevelsAtTimeStr(long timeVal)

Returns a string containing the status and usage level names for the given time value, fetched from the levels cache.

Parameters:

timeVal - requested time value (seconds since 1/1/1970).

Returns:

An ASCII string formatted as follows: NNNN:SSSSS,UUUUU where NNNN is the station name, SSSSS is the status level tag name and UUUUU is the usage level tag name; or an empty string if the levels cache is not enabled.

purgeOldLevelsCacheEntries

public void purgeOldLevelsCacheEntries(long timeVal)

Purges entries from the station-levels cache that are older than the given time value. The newest older item is left in the cache (so it is available for the 'getCacheLevelsAtTimeStr()' method).

Parameters:

timeVal - purge time value (seconds since 1/1/1970).

closeParamHistories

public void closeParamHistories()

Closes the history tracking for the parameters for this station, releasing resources allocated by their archive managers.