com.massa.mrules.accessor

Class MSearchAccessor

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.MSearchAccessor

All Implemented Interfaces:

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

Direct Known Subclasses:

MCountAccessor, MFilterAccessor, MMinMaxAccessor

@PersistantProperties(properties=@PersistantProperty(property="condition"))
public class MSearchAccessor
extends AbstractReadSourceAccessor

Allows to search a Collection for an Object validating a specific condition. Returns the first instance found.
This Accessor allows no casts, as searched object are in general complex beans, and not convertible types.
If nothing is found, returns null.

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	SEARCH_ID

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

internalExpectedGenericType, internalExpectedType, source

Constructor Summary

Constructors

Constructor and Description
MSearchAccessor()
MSearchAccessor(IReadAccessor source, ICondition condition)

Method Summary

Modifier and Type	Method and Description
protected void	check()
protected void	check(boolean conditionMandatory)
MSearchAccessor	clone() Clones the Addon.
protected void	commonCompile(ICompilationContext ctxt, Class<?> expectedType, Class<?> expectedGenericType)
<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)
ICondition	getCondition()
CostInfo	getEstimatedReadCost(ICompilationContext ctxt) Returns source's cost + 1.
String	getImplementationId() Unique addon implementation ID.
int	hashCode()
boolean	isCacheUsed() Returns false by default.
protected boolean	parseCollections() Always false.
void	setCondition(ICondition condition)
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

getGenericCollectionType, getInternalCacheIdentifier, getSource, getType, handleValue, internalGet, 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

SEARCH_ID

public static final String SEARCH_ID

See Also:

Constant Field Values

Constructor Detail

MSearchAccessor

public MSearchAccessor()

MSearchAccessor

public MSearchAccessor(IReadAccessor source,
                       ICondition condition)

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

commonCompile

protected void commonCompile(ICompilationContext ctxt,
                             Class<?> expectedType,
                             Class<?> expectedGenericType)
                      throws MRuleValidationException

Throws:

MRuleValidationException

check

protected void check()
              throws MRuleValidationException

Throws:

MRuleValidationException

check

protected void check(boolean conditionMandatory)
              throws MRuleValidationException

Throws:

MRuleValidationException

getEstimatedReadCost

public CostInfo getEstimatedReadCost(ICompilationContext ctxt)
                              throws MRuleValidationException

Description copied from class: AbstractReadSourceAccessor

Returns source's cost + 1.

Specified by:

getEstimatedReadCost in interface IReadAccessor

Overrides:

getEstimatedReadCost in class AbstractReadSourceAccessor

Parameters:

ctxt - Compilation context.

Throws:

MRuleValidationException - if validation problem detected.

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

parseCollections

protected boolean parseCollections()

Always false.

Specified by:

parseCollections in class AbstractReadSourceAccessor

getImplementationId

public String getImplementationId()

Description copied from interface: IAddon

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

isCacheUsed

public boolean isCacheUsed()

Description copied from class: AbstractAddon

Returns false by default.

Specified by:

isCacheUsed in interface IAddon

Overrides:

isCacheUsed in class AbstractReadSourceAccessor

clone

public MSearchAccessor 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

getCondition

public ICondition getCondition()

setCondition

public void setCondition(ICondition condition)