Package org.drools.mvel.evaluators

Class SetEvaluatorsDefinition.BaseMemberOfEvaluator

java.lang.Object

org.drools.mvel.evaluators.BaseEvaluator

org.drools.mvel.evaluators.SetEvaluatorsDefinition.BaseMemberOfEvaluator

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, org.drools.base.rule.accessor.Evaluator, MvelEvaluator, org.kie.api.runtime.rule.Evaluator

Direct Known Subclasses:

SetEvaluatorsDefinition.BigDecimalMemberOfEvaluator, SetEvaluatorsDefinition.BigIntegerMemberOfEvaluator, SetEvaluatorsDefinition.BooleanMemberOfEvaluator, SetEvaluatorsDefinition.ByteMemberOfEvaluator, SetEvaluatorsDefinition.CharacterMemberOfEvaluator, SetEvaluatorsDefinition.DateMemberOfEvaluator, SetEvaluatorsDefinition.DoubleMemberOfEvaluator, SetEvaluatorsDefinition.FloatMemberOfEvaluator, SetEvaluatorsDefinition.IntegerMemberOfEvaluator, SetEvaluatorsDefinition.LongMemberOfEvaluator, SetEvaluatorsDefinition.ObjectMemberOfEvaluator, SetEvaluatorsDefinition.ShortMemberOfEvaluator, SetEvaluatorsDefinition.StringMemberOfEvaluator

Enclosing class:

SetEvaluatorsDefinition

public abstract static class SetEvaluatorsDefinition.BaseMemberOfEvaluator
extends BaseEvaluator

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
BaseMemberOfEvaluator()
BaseMemberOfEvaluator(org.drools.base.base.ValueType type, org.drools.drl.parser.impl.Operator operator)

Method Summary

Modifier and Type	Method	Description
boolean	evaluate(org.drools.base.base.ValueResolver valueResolver, org.drools.base.rule.accessor.ReadAccessor extractor, org.kie.api.runtime.rule.FactHandle handle1, org.drools.base.rule.accessor.FieldValue fieldValue)
boolean	evaluate(org.drools.base.base.ValueResolver valueResolver, org.drools.base.rule.accessor.ReadAccessor extractor1, org.kie.api.runtime.rule.FactHandle handle1, org.drools.base.rule.accessor.ReadAccessor extractor2, org.kie.api.runtime.rule.FactHandle handle2)
boolean	evaluateCachedLeft(org.drools.base.base.ValueResolver valueResolver, VariableRestriction.VariableContextEntry context, org.kie.api.runtime.rule.FactHandle right)	Evaluates the expression using the provided parameters.
boolean	evaluateCachedRight(org.drools.base.base.ValueResolver valueResolver, VariableRestriction.VariableContextEntry context, org.kie.api.runtime.rule.FactHandle left)	Evaluates the expression using the provided parameters.
org.drools.base.base.ValueType	getCoercedValueType()
abstract java.lang.String	toString()

Methods inherited from class org.drools.mvel.evaluators.BaseEvaluator

equals, getInterval, getOperator, getValueType, hashCode, isTemporal, readExternal, writeExternal

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseMemberOfEvaluator

public BaseMemberOfEvaluator()

BaseMemberOfEvaluator

public BaseMemberOfEvaluator(org.drools.base.base.ValueType type,
                             org.drools.drl.parser.impl.Operator operator)

Method Detail

getCoercedValueType

public org.drools.base.base.ValueType getCoercedValueType()

Specified by:

getCoercedValueType in interface org.drools.base.rule.accessor.Evaluator

Overrides:

getCoercedValueType in class BaseEvaluator

evaluate

public boolean evaluate(org.drools.base.base.ValueResolver valueResolver,
                        org.drools.base.rule.accessor.ReadAccessor extractor,
                        org.kie.api.runtime.rule.FactHandle handle1,
                        org.drools.base.rule.accessor.FieldValue fieldValue)

evaluateCachedRight

public boolean evaluateCachedRight(org.drools.base.base.ValueResolver valueResolver,
                                   VariableRestriction.VariableContextEntry context,
                                   org.kie.api.runtime.rule.FactHandle left)

Description copied from interface: MvelEvaluator

Evaluates the expression using the provided parameters. This method is used when evaluating right-activated beta-constraints, i.e., a fact attribute against a variable value, that is activated from the right. For instance: Person( name == $someName ) This method will be used when a new Person instance is evaluated. So it will cache the value of the "Person" instance and will iterate over the left memory comparing it to each "$someName" bound values.

Parameters:

valueResolver - The current working memory

context - The previously cached context, including the right value and the extractor for the left value.

left - The left object, from where to extract the bound variable. In the above example, that is the "$someName" variable value.

Returns:

Returns true if evaluation is successful. false otherwise.

evaluateCachedLeft

public boolean evaluateCachedLeft(org.drools.base.base.ValueResolver valueResolver,
                                  VariableRestriction.VariableContextEntry context,
                                  org.kie.api.runtime.rule.FactHandle right)

Description copied from interface: MvelEvaluator

Evaluates the expression using the provided parameters. This method is used when evaluating left-activated beta-constraints, i.e., a fact attribute against a variable value, that is activated from the left. For instance: Person( name == $someName ) This method will be used when a new $someName variable is bound. So it will cache the value of $someName and will iterate over the right memory (Person instances) evaluating each occurrence.

Parameters:

valueResolver - The current working memory

context - The previously cached context, including the left value and the extractor for the right value.

right - The right object, from where to extract the value. In the above example, that is the "Person" instance from where to extract the "name" attribute.

Returns:

Returns true if evaluation is successful. false otherwise.

evaluate

public boolean evaluate(org.drools.base.base.ValueResolver valueResolver,
                        org.drools.base.rule.accessor.ReadAccessor extractor1,
                        org.kie.api.runtime.rule.FactHandle handle1,
                        org.drools.base.rule.accessor.ReadAccessor extractor2,
                        org.kie.api.runtime.rule.FactHandle handle2)

toString

public abstract java.lang.String toString()

Overrides:

toString in class BaseEvaluator