Package com.evolveum.midpoint.repo.common.expression.evaluator

Class AbstractExpressionEvaluator<V extends PrismValue,D extends ItemDefinition<?>,E>

java.lang.Object

com.evolveum.midpoint.repo.common.expression.evaluator.AbstractExpressionEvaluator<V,D,E>

Type Parameters:

E - evaluator bean (configuration) type

All Implemented Interfaces:

ExpressionEvaluator<V>

Direct Known Subclasses:

AbstractValueTransformationExpressionEvaluator, AsIsExpressionEvaluator, AssociationFromLinkExpressionEvaluator, ConstExpressionEvaluator, FunctionExpressionEvaluator, GenerateExpressionEvaluator, LiteralExpressionEvaluator, PathExpressionEvaluator, ProportionalExpressionEvaluator, ReferenceAttributeFromLinkExpressionEvaluator, SequentialValueExpressionEvaluator

public abstract class AbstractExpressionEvaluator<V extends PrismValue,D extends ItemDefinition<?>,E>
extends Object
implements ExpressionEvaluator<V>

Evaluates an expression defined by expressionEvaluatorBean.

Author:

Radovan Semancik

Field Summary

Fields

Modifier and Type	Field	Description
protected final E	expressionEvaluatorBean	Bean (i.e.
protected final D	outputDefinition	Definition of the output item.
protected final @NotNull PrismContext	prismContext
protected final Protector	protector

Constructor Summary

Constructors

Constructor	Description
AbstractExpressionEvaluator(@NotNull QName elementName, E expressionEvaluatorBean, D outputDefinition, Protector protector)

Method Summary

Modifier and Type	Method	Description
protected void	addInternalOrigin(PrismValue value, ExpressionEvaluationContext context)	Adds Internal origin for given prismValue.
void	applyValueMetadata(PrismValueDeltaSetTriple<V> triple, ExpressionEvaluationContext context, OperationResult result)	Applies value metadata to the triple to-be-outputted.
protected void	checkEvaluatorProfile(ExpressionEvaluationContext context)	Check expression profile.
TypedValue<?>	findInSourcesAndVariables(ExpressionEvaluationContext context, String variableName)
PrismValueDeltaSetTriple<V>	finishOutputTriple(PrismValueDeltaSetTriple<V> resultTriple, Function<Object,Object> additionalConvertor, ItemPath residualPath)	Converts intermediate expression result triple to the final output triple according to expected Java type and additional convertor.
@NotNull QName	getElementName()	Fully qualified name of the element defining the expression (e.g.
D	getOutputDefinition()
@NotNull PrismContext	getPrismContext()
Protector	getProtector()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.evolveum.midpoint.repo.common.expression.ExpressionEvaluator

doesVetoTargetValueRemoval, evaluate, shortDebugDump

Field Details

expressionEvaluatorBean

protected final E expressionEvaluatorBean

Bean (i.e. configuration) for the evaluator. In some cases it can be null - e.g. for implicit asIs evaluator.

outputDefinition

protected final D extends ItemDefinition<?> outputDefinition

Definition of the output item. Needed for some of the evaluators (the question is if it's really needed).

protector

protected final Protector protector

prismContext

@NotNull
protected final @NotNull PrismContext prismContext

Constructor Details

AbstractExpressionEvaluator

public AbstractExpressionEvaluator(@NotNull
 @NotNull QName elementName,
 E expressionEvaluatorBean,
 D outputDefinition,
 Protector protector)

Method Details

getElementName

@NotNull
public @NotNull QName getElementName()

Description copied from interface: ExpressionEvaluator

Fully qualified name of the element defining the expression (e.g. c:path).

Specified by:

getElementName in interface ExpressionEvaluator<V extends PrismValue>

checkEvaluatorProfile

protected void checkEvaluatorProfile(ExpressionEvaluationContext context)
                              throws SecurityViolationException

Check expression profile. Throws security exception if the execution is not allowed by the profile.

This implementation works only for simple evaluators that do not have any profile settings. Complex evaluators should override this method.

Throws:

SecurityViolationException - expression execution is not allowed by the profile.

getPrismContext

@NotNull
public @NotNull PrismContext getPrismContext()

getOutputDefinition

public D getOutputDefinition()

getProtector

public Protector getProtector()

finishOutputTriple

public PrismValueDeltaSetTriple<V> finishOutputTriple(PrismValueDeltaSetTriple<V> resultTriple,
 Function<Object,Object> additionalConvertor,
 ItemPath residualPath)

Converts intermediate expression result triple to the final output triple according to expected Java type and additional convertor. TODO why it is used only for some evaluators?

findInSourcesAndVariables

public TypedValue<?> findInSourcesAndVariables(ExpressionEvaluationContext context,
 String variableName)

addInternalOrigin

protected void addInternalOrigin(PrismValue value,
 ExpressionEvaluationContext context)
                          throws SchemaException

Adds Internal origin for given prismValue. Assumes that value has no metadata. (Currently does not fill-in actorRef nor channel.)

Throws:

SchemaException

applyValueMetadata

public void applyValueMetadata(PrismValueDeltaSetTriple<V> triple,
 ExpressionEvaluationContext context,
 OperationResult result)
                        throws CommunicationException,
ObjectNotFoundException,
SchemaException,
SecurityViolationException,
ConfigurationException,
ExpressionEvaluationException

Applies value metadata to the triple to-be-outputted. To be used for simple mappings that basically copy data from given source (input IDI or some other data source) to the output.

Throws:

CommunicationException

ObjectNotFoundException

SchemaException

SecurityViolationException

ConfigurationException

ExpressionEvaluationException