globals.value

Class IntegerId

java.lang.Object

util.PropertyContainer

util.PropertyResources

globals.parameter.AbstractParameter

globals.value.AbstractValue

globals.value.IntegerId

All Implemented Interfaces:

Parameter, StatePreserving, Value, Cloneable, ExitCleaning, Initializable, Preserving, PropertySupplying, ResourceSupplying

public class IntegerId
extends AbstractValue
implements StatePreserving

An ID describable as an integer. Preserves its state. Has the capability to be increased and returned by a single command getNextId().
Used as an counter for TPL command.

Nested Class Summary

Nested classes/interfaces inherited from class util.PropertyResources

PropertyResources.Load, PropertyResources.URLResource

Field Summary

Fields

Modifier and Type	Field and Description
private static int	DEFMAXID Maximum value, defaults to Integer.MAX_VALUE
private static int	DEFSTARTID Start value, defaults to 1.
private int	id The current value.
static String	KEY_MAXID Maximum value, defaults to Integer.MAX_VALUE
static String	KEY_STARTID Start value, defaults to 1.

Fields inherited from class globals.parameter.AbstractParameter

KEY_FORMAT, KEY_NAME, KEY_PRESERVE, UNKNOWN

Fields inherited from class util.PropertyResources

KEY_NOINITONCREATE, POSTFIX_ALPHABET, POSTFIX_BYTES, POSTFIX_DIR, POSTFIX_EXT, POSTFIX_FILE, POSTFIX_LIST, POSTFIX_MODTIME, POSTFIX_URL

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Fields inherited from interface util.ResourceSupplying

KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Constructor Summary

Constructors

Constructor and Description
IntegerId() Defaults all.
IntegerId(Map<String,String> prop) Constructs a new IntegerId.

Method Summary

Modifier and Type	Method and Description
int	getNextId() Returns the next id readily as an integer.
Number	getValue() Gets the current unique name identifier.
void	init() We scout for a file that hold the last unique value.
boolean	preserve() On exit, we save our current state if the serialize property is set.
boolean	restore() We restore our old value by reading the last date and target count from a serialization file.
Number	setValue(Number val) Setting the unique number is only allowed vai a call to next, therefore this method throws an UnsupportedOperationException.

Methods inherited from class globals.value.AbstractValue

get, set

Methods inherited from class globals.parameter.AbstractParameter

createParameter, delivers, exit, getFormatted, getFormatted, getName, getPreserveFile, getString, getString, overrideDefaultName, register, rescanned, setName, toString

Methods inherited from class util.PropertyResources

clone, createFrom, createFrom, createFrom, createInstance, getApplet, getAsResources, getLocate, getPropertiesToKey, getPropertiesToKey, getResource, getResourceAsStream, getResourceFromKey, getResources, hasLocalURLs, initProperties, keyCreate, keyCreate, reload, setApplet

Methods inherited from class util.PropertyContainer

augment, augment, augment, augment, augment, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, isNew, parseObject, parseObject, reload, removeProperty, requires, setObject, setProperties, setProperty, stringProperties

Methods inherited from class java.lang.Object

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

Methods inherited from interface globals.Parameter

get, getFormatted, getName, getString, set

Methods inherited from interface util.PropertySupplying

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

Methods inherited from interface util.ExitCleaning

exit

Field Detail

KEY_STARTID

public static final String KEY_STARTID

Start value, defaults to 1.

See Also:

Constant Field Values

KEY_MAXID

public static final String KEY_MAXID

Maximum value, defaults to Integer.MAX_VALUE

See Also:

Constant Field Values

DEFSTARTID

private static final int DEFSTARTID

Start value, defaults to 1.

See Also:

Constant Field Values

DEFMAXID

private static final int DEFMAXID

Maximum value, defaults to Integer.MAX_VALUE

See Also:

Constant Field Values

id

private int id

The current value.

Constructor Detail

IntegerId

public IntegerId()

Defaults all.

IntegerId

public IntegerId(Map<String,String> prop)

Constructs a new IntegerId. The value is restored in the init section.

Method Detail

init

public void init()
          throws InitException

We scout for a file that hold the last unique value. If this is not present or given, we use the default start value.

Specified by:

init in interface Initializable

Overrides:

init in class AbstractParameter

Throws:

InitException

restore

public boolean restore()

We restore our old value by reading the last date and target count from a serialization file.

Specified by:

restore in interface Preserving

preserve

public boolean preserve()

On exit, we save our current state if the serialize property is set. First the date, then the targetnumber is writtn.

Specified by:

preserve in interface Preserving

getValue

public Number getValue()

Gets the current unique name identifier.

Specified by:

getValue in interface Value

setValue

public Number setValue(Number val)
                throws UnsupportedOperationException

Setting the unique number is only allowed vai a call to next, therefore this method throws an UnsupportedOperationException.

Specified by:

setValue in interface Value

Throws:

UnsupportedOperationException

getNextId

public int getNextId()

Returns the next id readily as an integer.