stella.ccd
Class AbstractCCDParameter

java.lang.Object
  util.PropertyContainer
      stella.parameter.AbstractParameter
          stella.parameter.AbstractRemoteParameter
              stella.ccd.AbstractCCDParameter

All Implemented Interfaces:

DriverDepending, Cloneable, Remote, Parameter, RemoteParameter, ExitCleaning, Initializable, PropertyBearing, RmiCaster

Direct Known Subclasses:

AbstractCCDValue

public abstract class AbstractCCDParameter
extends AbstractRemoteParameter
implements DriverDepending

A intermittent class that bundels a common requirement of all ccd parameters. All parameters are remote enabled, as they should serve as parameters for sensors. It allows the adding of a CcdDriver object, as all ccd parameters get their information from this parameters class.

Nested Class Summary

Nested classes/interfaces inherited from class util.PropertyContainer

PropertyContainer.URLResource

Field Summary

private static CcdDriver	camera The static reference to the main camera object.
private static Map	cameracache The cached camera info.
private static long	DEFCACHETIME The default caching time for camera queries.
static String	DEFCAMERANAME The default name of the CCD.
static String	KEY_CACHETIME The default caching time for camera queries.
static String	KEY_CAMERANAME The default name of the CCD.
private static long	lastcache The time the camera was queried last.

Fields inherited from class stella.parameter.AbstractRemoteParameter

DEFBIND, KEY_BIND

Fields inherited from class stella.parameter.AbstractParameter

KEY_FORMAT, KEY_NAME, KEY_PRESERVE, UNKNOWN

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_LOCALECOUNTRY, KEY_LOCALELANGUAGE, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR, KEY_NOINITONCREATE, KEY_RESOURCEBUNDLES

Fields inherited from interface util.PropertyBearing

CONFIG, KEY_CLASS, KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Constructor Summary

protected

AbstractCCDParameter(Map info) Protected constructor for constructor chaining.

Method Summary

Object	get() Checks, if a camera reference is given.
protected abstract Object	getFromCamera(Map ccd) Uses a reference to the camera object to return the requested value.
boolean	registerDriver(Driver ccd) Registers the main camera object to this parameter.
Object	set(Object newval) Setting of the parameter is not allowed.
private static void	updateCache() Updates the cache.

Methods inherited from class stella.parameter.AbstractRemoteParameter

addRmiListener, bindToRegistry, exit, init, isValid, remoteGet, removeRmiListener, rescanned, unbindFromRegistry

Methods inherited from class stella.parameter.AbstractParameter

createParameter, delivers, getFormatted, getFormatted, getName, getPreserveFile, getString, getString, register, setName, toString

Methods inherited from class util.PropertyContainer

augment, augment, augment, clone, createFrom, createFrom, createFrom, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getLocalClassLoader, getLocalized, getLocalized, getLocalizedString, getLocalizedString, getProperties, getPropertiesToKey, getPropertiesToKey, getProperty, getResource, getResourceAsStream, getResourceFromKey, getResources, has, isNew, keyCreate, keyCreate, parseObject, reload, reload, removeProperty, setObject, setProperties, setProperty, stringProperties

Methods inherited from class java.lang.Object

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

Methods inherited from interface util.PropertyBearing

defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsObject, getAsObject, getLocalized, getProperties, getProperty, getResource, getResourceAsStream, getResources, has, parseObject, removeProperty, setObject, setProperty, stringProperties

Field Detail

KEY_CAMERANAME

public static final String KEY_CAMERANAME

The default name of the CCD.

See Also:

Constant Field Values

KEY_CACHETIME

public static final String KEY_CACHETIME

The default caching time for camera queries.

See Also:

Constant Field Values

DEFCAMERANAME

public static final String DEFCAMERANAME

The default name of the CCD.

See Also:

Constant Field Values

DEFCACHETIME

private static final long DEFCACHETIME

The default caching time for camera queries.

See Also:

Constant Field Values

camera

private static CcdDriver camera

The static reference to the main camera object.

lastcache

private static long lastcache

The time the camera was queried last.

cameracache

private static Map cameracache

The cached camera info.

Constructor Detail

AbstractCCDParameter

protected AbstractCCDParameter(Map info)

Protected constructor for constructor chaining.

Method Detail

registerDriver

public boolean registerDriver(Driver ccd)

Registers the main camera object to this parameter. Must be called prior to data retrieval.

Specified by:

registerDriver in interface DriverDepending

Returns:

True if registering at the driver was successful.

get

public Object get()

Checks, if a camera reference is given. If not, null is returned.

Specified by:

get in interface Parameter

set

public Object set(Object newval)

Setting of the parameter is not allowed. Some of the values might be changed, but only via CcdCommands.

Specified by:

set in interface Parameter

Returns:

The previous value of this parameter.

Throws:

UnsupportedOperationException

getFromCamera

protected abstract Object getFromCamera(Map ccd)

Uses a reference to the camera object to return the requested value.

updateCache

private static void updateCache()

Updates the cache.