com.massa.mrules.accessor.arithmetic

Class Round

java.lang.Object

com.massa.mrules.base.AbstractMRulesObject

com.massa.mrules.addon.AbstractAddon

com.massa.mrules.accessor.AbstractReadAccessor

com.massa.mrules.accessor.AbstractReadSourceAccessor

com.massa.mrules.accessor.arithmetic.Round

All Implemented Interfaces:

IAccessor, IAccessorValueHandler, IReadAccessor, IAddon, IMRulesObject, Outable, Serializable, Cloneable

@PersistantProperties(properties=@PersistantProperty(property="decimals",defaultValue="0"))
public class Round
extends AbstractReadSourceAccessor

Class that allows to round decimal numbers.
The source might be iterable, in which case the result will be too.
This accessor also handles rounding all members of a Collection, in which case it will return a new Collection instance.
The default behaviour if no decimal is precised is to round to 0 in HALF_UP mode.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.massa.mrules.accessor.IReadAccessor

IReadAccessor.Standalone

Field Summary

Fields

Modifier and Type	Field and Description
static String	ROUND_ID

Fields inherited from class com.massa.mrules.accessor.AbstractReadSourceAccessor

internalExpectedGenericType, internalExpectedType, source

Constructor Summary

Constructors

Constructor and Description
Round()
Round(IReadAccessor source)
Round(Rounder decimals)
Round(Rounder decimals, IReadAccessor source)

Method Summary

Modifier and Type	Method and Description
Round	clone() Clones the Addon.
<G,C extends Collection<G>> void	compileCollection(ICompilationContext ctxt, Class<C> expectedType, Class<G> expectedGenericType) Implementation to handle case when expected result is a Collection.
void	compileValue(ICompilationContext ctxt, Class<?> expectedType) Implementation to handle case when expected result is a single value.
boolean	equals(Object o)
protected BigDecimal	format(BigDecimal ret) Method used to format returned property (desired number of decimals, trailing zeros removed, etc ...)
Rounder	getDecimals()
String	getImplementationId() Unique addon implementation ID.
int	hashCode()
protected boolean	parseCollections() Always true.
void	setDecimals(Rounder decimals)
Object	specificHandleValue(IExecutionContext ctxt, Object value) Override this to apply specific transformation on value read from source accessor.
void	toString(OuterWithLevel outer) Method used to send String representation of the current object to the OuterWithLevel.

Methods inherited from class com.massa.mrules.accessor.AbstractReadSourceAccessor

getEstimatedReadCost, getGenericCollectionType, getInternalCacheIdentifier, getSource, getType, handleValue, internalGet, isCacheUsed, isConstantValue, isInternalCacheIdentifierNeeded, isShouldIterate, resetCachedData, setInternalCacheIdentifier, setSource, wasRegistered

Methods inherited from class com.massa.mrules.accessor.AbstractReadAccessor

castToExpected, compileRead, compileRead, compileRead, compileRead, get, getGenericTypes, isShouldBeWrappedToConstantValue, isShouldNotCache

Methods inherited from class com.massa.mrules.addon.AbstractAddon

optimize, toString

Methods inherited from class com.massa.mrules.base.AbstractMRulesObject

getDebugInfo, getDescription, getName, setDebugInfo, setDescription, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.massa.mrules.addon.IAddon

optimize

Methods inherited from interface com.massa.mrules.base.IMRulesObject

getDebugInfo, getDescription, getName, setDebugInfo, setDescription, setName

Field Detail

ROUND_ID

public static final String ROUND_ID

See Also:

Constant Field Values

Constructor Detail

Round

public Round()

Round

public Round(IReadAccessor source)

Round

public Round(Rounder decimals)

Round

public Round(Rounder decimals,
             IReadAccessor source)

Method Detail

compileValue

public void compileValue(ICompilationContext ctxt,
                         Class<?> expectedType)
                  throws MRuleValidationException

Description copied from class: AbstractReadAccessor

Implementation to handle case when expected result is a single value.

Specified by:

compileValue in class AbstractReadAccessor

Throws:

MRuleValidationException

compileCollection

public <G,C extends Collection<G>> void compileCollection(ICompilationContext ctxt,
                                                          Class<C> expectedType,
                                                          Class<G> expectedGenericType)
                                                   throws MRuleValidationException

Description copied from class: AbstractReadAccessor

Implementation to handle case when expected result is a Collection.

Specified by:

compileCollection in class AbstractReadAccessor

Throws:

MRuleValidationException

parseCollections

protected boolean parseCollections()

Always true.

Specified by:

parseCollections in class AbstractReadSourceAccessor

specificHandleValue

public Object specificHandleValue(IExecutionContext ctxt,
                                  Object value)
                           throws MAccessorException

Description copied from class: AbstractReadSourceAccessor

Override this to apply specific transformation on value read from source accessor.

Specified by:

specificHandleValue in class AbstractReadSourceAccessor

Throws:

MAccessorException

format

protected final BigDecimal format(BigDecimal ret)

Method used to format returned property (desired number of decimals, trailing zeros removed, etc ...)

getImplementationId

public String getImplementationId()

Description copied from interface: IAddon

Unique addon implementation ID. In case of conflict, an Class Initialization error will be raised.

clone

public Round clone()

Description copied from interface: IAddon

Clones the Addon.
The general contract is that the clone of a compiled Addon is still compiled.

Specified by:

clone in interface IAccessor

Specified by:

clone in interface IReadAccessor

Specified by:

clone in interface IAddon

Specified by:

clone in interface IMRulesObject

Overrides:

clone in class AbstractReadSourceAccessor

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractReadSourceAccessor

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractReadSourceAccessor

toString

public void toString(OuterWithLevel outer)
              throws IOException

Description copied from interface: Outable

Method used to send String representation of the current object to the OuterWithLevel.

Specified by:

toString in interface Outable

Overrides:

toString in class AbstractReadSourceAccessor

Throws:

IOException

getDecimals

public Rounder getDecimals()

setDecimals

public void setDecimals(Rounder decimals)