com.massa.mrules.accessor

Class MNewInstanceAccessor

java.lang.Object

com.massa.mrules.base.AbstractMRulesObject

com.massa.mrules.addon.AbstractAddon

com.massa.mrules.accessor.AbstractReadAccessor

com.massa.mrules.accessor.MNewInstanceAccessor

All Implemented Interfaces:

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

@PersistantProperty(property="className") @PersistantProperty(property="arguments",alias="argument") @PersistantProperty(property="argumentsTypes",alias="argumentType")
public class MNewInstanceAccessor
extends AbstractReadAccessor

Allows to create a new instance of an object.
This accessor is very specific, and should be used when nothing else can be done.
Note that get method will return the created instance with no cast. So the expected parameters are ignored.
The accessor will do its best to find the good constructor. But in case of name conflicts which can't be solved, you can give a specific list of arguments types (which will be used as a priority to determine the constructor to call).
Note: Arrays are not yet handled.

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	NEW_ID

Constructor Summary

Constructors

Constructor and Description
MNewInstanceAccessor()
MNewInstanceAccessor(String className)
MNewInstanceAccessor(String className, List<? extends IReadAccessor> arguments)
MNewInstanceAccessor(String className, List<? extends IReadAccessor> arguments, List<String> argumentsTypes)

Method Summary

Modifier and Type	Method and Description
MNewInstanceAccessor	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.
protected Constructor<?>	deepFindConstructor(Class<?> clazz, Class<?>[] args, boolean safe)
boolean	equals(Object o)
List<? extends IReadAccessor>	getArguments()
List<String>	getArgumentsTypes()
String	getClassName()
CostInfo	getEstimatedReadCost(ICompilationContext ctxt) Estimates the reading complexity, to allow callers to optimize calls.
Class<?>	getGenericCollectionType(IContext ctxt) Returns the Generic type, if value is a collection or an array, evaluated : at compilation time for standard compilation at runtime for light compilation and execution phase or null if the type can't be resolved or value is not a collection.
String	getImplementationId() Unique addon implementation ID.
Class<?>	getType(IContext ctxt) Returns the value's class, evaluated : at compilation time for standard compilation at runtime for light compilation or null if the type can't be resolved.
int	hashCode()
protected Object	internalGet(IExecutionContext ctxt) Specific addon implementation must be here.
boolean	isCacheUsed() Returns false by default.
boolean	isShouldIterate() Never.
void	setArguments(List<? extends IReadAccessor> arguments)
void	setArgumentsTypes(List<String> argumentsTypes)
void	setClassName(String className)
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.AbstractReadAccessor

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

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

getInternalCacheIdentifier, isInternalCacheIdentifierNeeded, optimize, resetCachedData, setInternalCacheIdentifier, toString, wasRegistered

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

getInternalCacheIdentifier, isInternalCacheIdentifierNeeded, optimize, resetCachedData, setInternalCacheIdentifier, wasRegistered

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

getDebugInfo, getDescription, getName, setDebugInfo, setDescription, setName

Field Detail

NEW_ID

public static final String NEW_ID

See Also:

Constant Field Values

Constructor Detail

MNewInstanceAccessor

public MNewInstanceAccessor()

MNewInstanceAccessor

public MNewInstanceAccessor(String className)

MNewInstanceAccessor

public MNewInstanceAccessor(String className,
                            List<? extends IReadAccessor> arguments)

MNewInstanceAccessor

public MNewInstanceAccessor(String className,
                            List<? extends IReadAccessor> arguments,
                            List<String> argumentsTypes)

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

deepFindConstructor

protected Constructor<?> deepFindConstructor(Class<?> clazz,
                                             Class<?>[] args,
                                             boolean safe)
                                      throws MRuleInternalException

Throws:

MRuleInternalException

getEstimatedReadCost

public CostInfo getEstimatedReadCost(ICompilationContext ctxt)

Description copied from interface: IReadAccessor

Estimates the reading complexity, to allow callers to optimize calls. Calls to this method should be done on a compiled accessor, so that all information is available to compute complexity.
Calls to non-compiled instance may return non-accurate results.

Parameters:

ctxt - Compilation context.

internalGet

protected Object internalGet(IExecutionContext ctxt)
                      throws MAccessorException

Description copied from class: AbstractReadAccessor

Specific addon implementation must be here.

Specified by:

internalGet in class AbstractReadAccessor

Throws:

MAccessorException

isShouldIterate

public boolean isShouldIterate()

Never.

getType

public Class<?> getType(IContext ctxt)
                 throws MAccessorException

Description copied from interface: IAccessor

Returns the value's class, evaluated :

• at compilation time for standard compilation
• at runtime for light compilation

or null if the type can't be resolved.

Throws:

MAccessorException

getGenericCollectionType

public Class<?> getGenericCollectionType(IContext ctxt)
                                  throws MAccessorException

Description copied from interface: IAccessor

Returns the Generic type, if value is a collection or an array, evaluated :

• at compilation time for standard compilation
• at runtime for light compilation and execution phase

or null if the type can't be resolved or value is not a collection.

Throws:

MAccessorException

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 AbstractAddon

clone

public MNewInstanceAccessor 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 AbstractReadAccessor

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

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.

Throws:

IOException

getClassName

public String getClassName()

setClassName

public void setClassName(String className)

getArguments

public List<? extends IReadAccessor> getArguments()

setArguments

public void setArguments(List<? extends IReadAccessor> arguments)

getArgumentsTypes

public List<String> getArgumentsTypes()

setArgumentsTypes

public void setArgumentsTypes(List<String> argumentsTypes)