uk.ac.ed.epcc.safe.accounting.db

Class DataObjectPropertyContainer

java.lang.Object

uk.ac.ed.epcc.webapp.model.data.DataObject

uk.ac.ed.epcc.safe.accounting.db.DataObjectPropertyContainer

All Implemented Interfaces:

ExpressionTarget, PropertyContainer, PropertyTarget, uk.ac.ed.epcc.webapp.Contexed, uk.ac.ed.epcc.webapp.ContextIndexed, uk.ac.ed.epcc.webapp.forms.Identified, uk.ac.ed.epcc.webapp.Indexed

Direct Known Subclasses:

UsageRecordFactory.Use

public class DataObjectPropertyContainer
extends uk.ac.ed.epcc.webapp.model.data.DataObject
implements PropertyContainer, ExpressionTarget

Basic extension of DataObject to implement PropertyContainer and ExpressionTarget

Author:

spb

Field Summary

Fields inherited from class uk.ac.ed.epcc.webapp.model.data.DataObject

DEBUG, record

Fields inherited from interface uk.ac.ed.epcc.webapp.forms.Identified

MAX_IDENTIFIER

Constructor Summary

Constructors

Constructor and Description
DataObjectPropertyContainer(DataObjectPropertyFactory<?> fac, uk.ac.ed.epcc.webapp.model.data.Repository.Record r)

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	evaluateExpression(PropExpression<T> expr) Evaluate an expression on the target object
<T> T	evaluateExpression(PropExpression<T> expr, T def) Evaluate expression with default.
java.util.Set<PropertyTag>	getDefinedProperties() Generate a set of all the properties defined in this container
ExpressionTargetFactory	getExpressionTargetFactory()
protected DataObjectPropertyFactory	getFac()
Parser	getParser() Get a Parser used to parse expressions for this target.
<T> T	getProperty(PropertyTag<T> tag) Get the specified property from the container.
<T> T	getProperty(PropertyTag<T> tag, T def) Get property with default.
uk.ac.ed.epcc.webapp.model.data.reference.IndexedReference	getReference()
void	setAll(PropertyContainer source) Copy all compatible properties from one container to another;
<T> void	setOptionalProperty(PropertyTag<? super T> tag, T value) Set the specified property if it is supported
<T> void	setProperty(PropertyTag<? super T> tag, T value) Set the specified property
<T> void	setProperty(PropertyTag<T> tag, PropertyContainer map)
boolean	supports(PropertyTag<?> tag) Is the specified property supported by the container.
boolean	writable(PropertyTag<?> tag) Is the specified property supported for write.

Methods inherited from class uk.ac.ed.epcc.webapp.model.data.DataObject

addToMap, addToMap, addToMap, commit, delete, empty, equals, formUpdate, getContext, getFactoryTag, getID, getIdentifier, getIdentifier, getLogger, getMap, getRecord, getRecord, getRecord, getSQLContext, getUniqueIdName, hashCode, post_commit, postCreate, pre_commit, release, setContents, setDirty, setMap, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DataObjectPropertyContainer

public DataObjectPropertyContainer(DataObjectPropertyFactory<?> fac,
                           uk.ac.ed.epcc.webapp.model.data.Repository.Record r)

Method Detail

getReference

public uk.ac.ed.epcc.webapp.model.data.reference.IndexedReference getReference()

getProperty

public final <T> T getProperty(PropertyTag<T> tag)
                    throws InvalidPropertyException

Description copied from interface: PropertyContainer

Get the specified property from the container. THe InvalidPropertyException should only be thrown if the supports method would have returned false for the requested property.

Specified by:

getProperty in interface PropertyContainer

Throws:

InvalidPropertyException

Type Parameters:

T - type of property

Parameters:

tag - PropertyTag identifying property

Returns:

value current value of property (may be null if not set).

getProperty

public final <T> T getProperty(PropertyTag<T> tag,
                T def)

Description copied from interface: PropertyTarget

Get property with default. If the property is not supported by the container of if no value has been set then the default value is returned.

Specified by:

getProperty in interface PropertyTarget

Type Parameters:

T - Type of property

Parameters:

tag - PropertTag identifying property

def - default value

Returns:

property value or default.

evaluateExpression

public final <T> T evaluateExpression(PropExpression<T> expr)
                           throws InvalidPropertyException

Description copied from interface: ExpressionTarget

Evaluate an expression on the target object

Specified by:

evaluateExpression in interface ExpressionTarget

Throws:

InvalidPropertyException

Type Parameters:

T - type of expression

Parameters:

expr - expression

Returns:

T

evaluateExpression

public final <T> T evaluateExpression(PropExpression<T> expr,
                       T def)

Description copied from interface: ExpressionTarget

Evaluate expression with default. If the expression does not resolve then return the default value

Specified by:

evaluateExpression in interface ExpressionTarget

Type Parameters:

T - type of expression

Parameters:

expr - expression

def - default value

Returns:

T

setProperty

public final <T> void setProperty(PropertyTag<? super T> tag,
                   T value)
                       throws InvalidPropertyException

Description copied from interface: PropertyContainer

Set the specified property

Specified by:

setProperty in interface PropertyContainer

Throws:

InvalidPropertyException

Type Parameters:

T - type of property

Parameters:

tag - PropertyTag identifying property

setOptionalProperty

public final <T> void setOptionalProperty(PropertyTag<? super T> tag,
                           T value)

Description copied from interface: PropertyContainer

Set the specified property if it is supported

Specified by:

setOptionalProperty in interface PropertyContainer

Type Parameters:

T - type of property

Parameters:

tag - PropertyTag identifying property

setProperty

public final <T> void setProperty(PropertyTag<T> tag,
                   PropertyContainer map)
                       throws InvalidPropertyException

Throws:

InvalidPropertyException

supports

public final boolean supports(PropertyTag<?> tag)

Description copied from interface: PropertyContainer

Is the specified property supported by the container. If the container is unconstrained this always returns true

Specified by:

supports in interface PropertyContainer

Returns:

boolean true if property supported

writable

public final boolean writable(PropertyTag<?> tag)

Description copied from interface: PropertyContainer

Is the specified property supported for write. If the container is unconstrained this always returns true

Specified by:

writable in interface PropertyContainer

Returns:

boolean true if property can be written

getExpressionTargetFactory

public ExpressionTargetFactory getExpressionTargetFactory()

getFac

protected DataObjectPropertyFactory getFac()

getDefinedProperties

public java.util.Set<PropertyTag> getDefinedProperties()

Description copied from interface: PropertyContainer

Generate a set of all the properties defined in this container

Specified by:

getDefinedProperties in interface PropertyContainer

Returns:

Set

setAll

public void setAll(PropertyContainer source)

Description copied from interface: PropertyContainer

Copy all compatible properties from one container to another;

Specified by:

setAll in interface PropertyContainer

Parameters:

source - PropertyContainer

getParser

public Parser getParser()

Description copied from interface: ExpressionTarget

Get a Parser used to parse expressions for this target.

Specified by:

getParser in interface ExpressionTarget

Returns:

Parser