net.sf.basedb.core
Class Quantity

java.lang.Object
  net.sf.basedb.core.BasicItem<QuantityData>
      net.sf.basedb.core.Quantity

All Implemented Interfaces:

AccessControlled, Identifiable, Nameable, Removable, SystemItem

public class Quantity
extends BasicItem<QuantityData>
implements Nameable, SystemItem, Removable

This class is used to represent a quantity for specifying units to annotations.

Version:

2.9

Author:

Nicklas

See Also:

Unit, Essentials of the SI: Base & derived units

Last modified

$Date: 2009-04-06 14:15:21 +0200 (Mon, 06 Apr 2009) $

Field Summary

static String	ABSORBED_DOSE The id for the Quantity object representing absorbed dose.
static String	ACCELERATION The id for the Quantity object representing acceleration.
static String	ANGLE The id for the Quantity object representing angle.
static String	AREA The id for the Quantity object representing area.
static String	CAPACITANCE The id for the Quantity object representing capacitance.
static String	CHARGE The id for the Quantity object representing electrical charge.
static String	CURRENT The id for the Quantity object representing electric current.
static String	DENSITY The id for the Quantity object representing density.
static String	ENERGY The id for the Quantity object representing energy.
static String	EQUIVALENT_DOSE The id for the Quantity object representing equivalent dose.
static String	FLOW_RATE The id for the Quantity object representing flow rate.
static String	FORCE The id for the Quantity object representing force.
static String	FRACTION The id for the Quantity object representing fractions.
static String	FREQUENCY The id for the Quantity object representing frequency.
static String	LENGTH The id for the Quantity object representing length.
static String	MAGNETIC_FIELD The id for the Quantity object representing magnetic field.
static String	MAGNETIC_FLUX The id for the Quantity object representing magnetic flux.
static String	MASS The id for the Quantity object representing mass.
static int	MAX_REFERENCE_UNIT_LENGTH The maximum length of the reference unit that can be stored in the database.
static String	MOMENTUM The id for the Quantity object representing momentum.
static String	POTENTIAL The id for the Quantity object representing electrical potential.
static String	POWER The id for the Quantity object representing power.
static String	PRESSURE The id for the Quantity object representing pressure.
static String	RADIOACTIVITY The id for the Quantity object representing radioactivity.
static String	RESISTANCE The id for the Quantity object representing electrical resistance.
static String	STORAGE_SIZE The id for the Quantity object representing storage sizes.
static String	SUBSTANCE The id for the Quantity object representing "amount of substance".
static String	TEMPERATURE The id for the Quantity object representing temperature.
static String	THERMAL_CONDUCTIVITY The id for the Quantity object representing thermal conductivity.
static String	TIME The id for the Quantity object representing time.
static String	TORGUE The id for the Quantity object representing torque.
static Item	TYPE The type of item represented by this class.
static String	VELOCITY The id for the Quantity object representing velocity.
static String	VOLUME The id for the Quantity object representing volume.

Fields inherited from interface net.sf.basedb.core.Nameable

MAX_DESCRIPTION_LENGTH, MAX_NAME_LENGTH

Fields inherited from interface net.sf.basedb.core.SystemItem

MAX_SYSTEM_ID_LENGTH

Constructor Summary

Quantity(QuantityData data)
Creates a quantity item.

Method Summary

static Quantity	getById(DbControl dc, int id) Get a Quantity object when you know the ID.
String	getDescription() Get the description for the item.
String	getName() Get the name of the item.
static Quantity	getNew(DbControl dc, String referenceUnit) Create a new Quantity item.
static ItemQuery<Quantity>	getQuery() Get a query configured to retrieve quantities.
String	getReferenceUnit() The reference unit describes the unit that all other units must relate to.
String	getSystemId() Get the system id for the item.
Item	getType() Get the type of item represented by the object.
(package private) UnitData	getUnit(org.hibernate.Session session, String symbol) Get the unit with a given symbol, or null if no unit is found.
Unit	getUnit(String symbol) Get a a unit by symbol, also checking among the aliases.
ItemQuery<Unit>	getUnits() Get a query that returns all units of this quantity.
Set<ItemProxy>	getUsingItems() Get all: Unit:s for this quantity AnnotationType:s using this quantity
(package private) void	initPermissions(int granted, int denied) If this is a system quantity, delete and create permissions are revoked.
boolean	isRemoved() Check if the removed flag is set for this item.
boolean	isSystemItem() Check if the item is a system item or not.
boolean	isUsed() Check if: Units for this quantity exists.
void	setDescription(String description) Set the description for the item.
void	setName(String name) Set the name of the item.
void	setReferenceUnit(String referenceUnit) Sets the reference unit.
void	setRemoved(boolean removed) Set the removed flag for this item.

Methods inherited from class net.sf.basedb.core.BasicItem

addUsingItems, addUsingItems, checkPermission, equals, getData, getDbControl, getId, getPermissions, getPluginPermissions, getSessionControl, getVersion, hashCode, hasPermission, isDetached, isInDatabase, onAfterCommit, onAfterInsert, onBeforeCommit, onRollback, setDbControl, setProjectDefaults, toString, toTransferable, validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.sf.basedb.core.Identifiable

getId, getVersion

Methods inherited from interface net.sf.basedb.core.AccessControlled

checkPermission, getPermissions, hasPermission

Field Detail

TYPE

public static final Item TYPE

The type of item represented by this class.

See Also:

Item.QUANTITY, getType()

LENGTH

public static final String LENGTH

The id for the Quantity object representing length.

See Also:

"http://physics.nist.gov/cuu/Units/meter.html", Constant Field Values

MASS

public static final String MASS

The id for the Quantity object representing mass.

See Also:

"http://physics.nist.gov/cuu/Units/kilogram.html", Constant Field Values

TIME

public static final String TIME

The id for the Quantity object representing time.

See Also:

"http://physics.nist.gov/cuu/Units/second.html", Constant Field Values

TEMPERATURE

public static final String TEMPERATURE

The id for the Quantity object representing temperature.

See Also:

"http://physics.nist.gov/cuu/Units/kelvin.html", Constant Field Values

CURRENT

public static final String CURRENT

The id for the Quantity object representing electric current.

See Also:

"http://physics.nist.gov/cuu/Units/ampere.html", Constant Field Values

SUBSTANCE

public static final String SUBSTANCE

The id for the Quantity object representing "amount of substance".

See Also:

"http://physics.nist.gov/cuu/Units/mole.html", Constant Field Values

AREA

public static final String AREA

The id for the Quantity object representing area.

See Also:

"http://en.wikipedia.org/wiki/Area", Constant Field Values

VOLUME

public static final String VOLUME

The id for the Quantity object representing volume.

See Also:

"http://en.wikipedia.org/wiki/Volume", Constant Field Values

VELOCITY

public static final String VELOCITY

The id for the Quantity object representing velocity.

See Also:

"http://en.wikipedia.org/wiki/Speed", Constant Field Values

ANGLE

public static final String ANGLE

The id for the Quantity object representing angle.

See Also:

"http://en.wikipedia.org/wiki/Radian", Constant Field Values

FORCE

public static final String FORCE

The id for the Quantity object representing force.

See Also:

"http://en.wikipedia.org/wiki/Newton", Constant Field Values

FREQUENCY

public static final String FREQUENCY

The id for the Quantity object representing frequency.

See Also:

"http://en.wikipedia.org/wiki/Newton", Constant Field Values

DENSITY

public static final String DENSITY

The id for the Quantity object representing density.

See Also:

"http://en.wikipedia.org/wiki/Density", Constant Field Values

ENERGY

public static final String ENERGY

The id for the Quantity object representing energy.

See Also:

"http://en.wikipedia.org/wiki/Joule", Constant Field Values

POWER

public static final String POWER

The id for the Quantity object representing power.

See Also:

"http://en.wikipedia.org/wiki/Watt", Constant Field Values

PRESSURE

public static final String PRESSURE

The id for the Quantity object representing pressure.

See Also:

"http://en.wikipedia.org/wiki/Pascal_(unit)", Constant Field Values

POTENTIAL

public static final String POTENTIAL

The id for the Quantity object representing electrical potential.

See Also:

"http://en.wikipedia.org/wiki/Volt", Constant Field Values

RESISTANCE

public static final String RESISTANCE

The id for the Quantity object representing electrical resistance.

See Also:

"http://en.wikipedia.org/wiki/Ohm", Constant Field Values

CHARGE

public static final String CHARGE

The id for the Quantity object representing electrical charge.

See Also:

"http://en.wikipedia.org/wiki/Coulomb", Constant Field Values

CAPACITANCE

public static final String CAPACITANCE

The id for the Quantity object representing capacitance.

See Also:

"http://en.wikipedia.org/wiki/Farad", Constant Field Values

MAGNETIC_FIELD

public static final String MAGNETIC_FIELD

The id for the Quantity object representing magnetic field.

See Also:

"http://en.wikipedia.org/wiki/Tesla_(unit)", Constant Field Values

MAGNETIC_FLUX

public static final String MAGNETIC_FLUX

The id for the Quantity object representing magnetic flux.

See Also:

"http://en.wikipedia.org/wiki/Weber_(unit)", Constant Field Values

ABSORBED_DOSE

public static final String ABSORBED_DOSE

The id for the Quantity object representing absorbed dose.

See Also:

"http://en.wikipedia.org/wiki/Gray_(unit)", Constant Field Values

EQUIVALENT_DOSE

public static final String EQUIVALENT_DOSE

The id for the Quantity object representing equivalent dose.

See Also:

"http://en.wikipedia.org/wiki/Sievert", Constant Field Values

RADIOACTIVITY

public static final String RADIOACTIVITY

The id for the Quantity object representing radioactivity.

See Also:

"http://en.wikipedia.org/wiki/Becquerel", Constant Field Values

FRACTION

public static final String FRACTION

The id for the Quantity object representing fractions.

See Also:

"http://en.wikipedia.org/wiki/Parts-per_notation", Constant Field Values

ACCELERATION

public static final String ACCELERATION

The id for the Quantity object representing acceleration.

See Also:

"http://en.wikipedia.org/wiki/Acceleration", Constant Field Values

TORGUE

public static final String TORGUE

The id for the Quantity object representing torque.

See Also:

"http://en.wikipedia.org/wiki/Torque", Constant Field Values

MOMENTUM

public static final String MOMENTUM

The id for the Quantity object representing momentum.

See Also:

"http://en.wikipedia.org/wiki/Momentum", Constant Field Values

FLOW_RATE

public static final String FLOW_RATE

The id for the Quantity object representing flow rate.

See Also:

"http://en.wikipedia.org/wiki/Volumetric_flow_rate", Constant Field Values

THERMAL_CONDUCTIVITY

public static final String THERMAL_CONDUCTIVITY

The id for the Quantity object representing thermal conductivity.

See Also:

"http://en.wikipedia.org/wiki/Thermal_conductivity", Constant Field Values

STORAGE_SIZE

public static final String STORAGE_SIZE

The id for the Quantity object representing storage sizes.

See Also:

"http://en.wikipedia.org/wiki/Byte", Constant Field Values

MAX_REFERENCE_UNIT_LENGTH

public static final int MAX_REFERENCE_UNIT_LENGTH

The maximum length of the reference unit that can be stored in the database.

See Also:

setReferenceUnit(String), Constant Field Values

Constructor Detail

Quantity

Quantity(QuantityData data)

Creates a quantity item.

Parameters:

data - the data

Method Detail

getNew

public static Quantity getNew(DbControl dc,
                              String referenceUnit)
                       throws BaseException

Create a new Quantity item.

Parameters:

dc - The DbControl which will be used for permission checking and database access

referenceUnit - The reference unit which all units must relate to

Returns:

The new Quantity item

Throws:

BaseException - If there is an error

getById

public static Quantity getById(DbControl dc,
                               int id)
                        throws ItemNotFoundException,
                               PermissionDeniedException,
                               BaseException

Get a Quantity object when you know the ID.

Parameters:

dc - The DbControl which will be used for permission checking and database access.

id - The system ID of the item to load.

Returns:

The Quantity item

Throws:

ItemNotFoundException - This exception is thrown if an item with the specified ID is not found

PermissionDeniedException - This exception is thrown if the logged in user doesn't have read permission to the item

BaseException - This exception is thrown if there is another error

getQuery

public static ItemQuery<Quantity> getQuery()

Get a query configured to retrieve quantities.

Returns:

An ItemQuery object

isUsed

public boolean isUsed()
               throws BaseException

Check if:

• Units for this quantity exists.
• Annotation types are using this quantity

Overrides:

isUsed in class BasicItem<QuantityData>

Returns:

TRUE if this item is used, FALSE otherwise

Throws:

BaseException - If not able to tell if item is used or not.

See Also:

BasicItem.getUsingItems()

getUsingItems

public Set<ItemProxy> getUsingItems()

Get all:

• Unit:s for this quantity
• AnnotationType:s using this quantity

  Overrides:

  getUsingItems in class BasicItem<QuantityData>

  Returns:

  A set containing proxies for the items, or an empty set if no items are using this item

  See Also:

  BasicItem.addUsingItems(Set, Item, org.hibernate.Query)

initPermissions

void initPermissions(int granted,
                     int denied)
               throws BaseException

If this is a system quantity, delete and create permissions are revoked.

Overrides:

initPermissions in class BasicItem<QuantityData>

Parameters:

granted - Permissions that have been granted by the subclass

denied - Permissions that have been denied by the subclass

Throws:

BaseException - If the permissions couldn't be initialised

getType

public Item getType()

Description copied from interface: Identifiable

Get the type of item represented by the object. The returned value is one of the values defined in the Item enumeration.

Specified by:

getType in interface Identifiable

Returns:

A value indicating the type of item

isRemoved

public boolean isRemoved()

Description copied from interface: Removable

Check if the removed flag is set for this item.

Specified by:

isRemoved in interface Removable

Returns:

TRUE if the item is flagged as removed, FALSE otherwise

setRemoved

public void setRemoved(boolean removed)
                throws PermissionDeniedException

Description copied from interface: Removable

Set the removed flag for this item.

Specified by:

setRemoved in interface Removable

Parameters:

removed - TRUE if the item should be flagged as removed, FALSE otherwise

Throws:

PermissionDeniedException - If the logged in user doesn't have Permission.DELETE permission for setting the flag to TRUE or Permission.WRITE permission for setting the flag to FALSE

getSystemId

public String getSystemId()

Description copied from interface: SystemItem

Get the system id for the item.

Specified by:

getSystemId in interface SystemItem

Returns:

The id of the item or null if it is not a system item

isSystemItem

public boolean isSystemItem()

Description copied from interface: SystemItem

Check if the item is a system item or not. A system item have a non-null value for the system id.

Specified by:

isSystemItem in interface SystemItem

Returns:

TRUE if this item is a system item, FALSE otherwise

getName

public String getName()

Description copied from interface: Nameable

Get the name of the item.

Specified by:

getName in interface Nameable

Returns:

A String with the name of the item

setName

public void setName(String name)
             throws PermissionDeniedException,
                    InvalidDataException

Description copied from interface: Nameable

Set the name of the item. The name cannot be null and mustn't be longer than the value specified by the Nameable.MAX_NAME_LENGTH constant.

Specified by:

setName in interface Nameable

Parameters:

name - The new name for the item

Throws:

PermissionDeniedException - If the logged in user doesn't have write permission

InvalidDataException - If the name is null or longer than specified by the Nameable.MAX_NAME_LENGTH constant

getDescription

public String getDescription()

Description copied from interface: Nameable

Get the description for the item.

Specified by:

getDescription in interface Nameable

Returns:

A String with a description of the item

setDescription

public void setDescription(String description)
                    throws PermissionDeniedException,
                           InvalidDataException

Description copied from interface: Nameable

Set the description for the item. The description can be null but mustn't be longer than the value specified by the Nameable.MAX_DESCRIPTION_LENGTH constant.

Specified by:

setDescription in interface Nameable

Parameters:

description - The new description for the item

Throws:

PermissionDeniedException - If the logged in user doesn't have write permission

InvalidDataException - If the description longer than specified by the Nameable.MAX_DESCRIPTION_LENGTH constant

getReferenceUnit

public String getReferenceUnit()

The reference unit describes the unit that all other units must relate to. When setting Unit.getReferenceFactor() and Unit.getReferenceOffset() for a unit the following formula should be used:

1 reference unit * factor + offset = 1 of the unit

For example:

1 meter * 0.001 + 0 = 1 millimeter
1 kelvin * 1 + 273.15 = 1 °Celsius

See Also:

Unit.getReferenceFactor(), Unit.getReferenceOffset()

setReferenceUnit

public void setReferenceUnit(String referenceUnit)
                      throws PermissionDeniedException,
                             InvalidDataException

Sets the reference unit.

Parameters:

referenceUnit -

Throws:

PermissionDeniedException - If the logged in user doesn't have write permission

InvalidDataException - If the value is null, or longer than MAX_REFERENCE_UNIT_LENGTH

getUnits

public ItemQuery<Unit> getUnits()

Get a query that returns all units of this quantity.

Returns:

An ItemQuery object

getUnit

public Unit getUnit(String symbol)

Get a a unit by symbol, also checking among the aliases. Note! This method always results in a database query. If you need to lookup lots of symbols, use a UnitCache instead which has better performance.

Parameters:

symbol - The symbol

getUnit

UnitData getUnit(org.hibernate.Session session,
                 String symbol)

Get the unit with a given symbol, or null if no unit is found.