Package org.drools.mvel.evaluators

Class StrEvaluatorDefinition

java.lang.Object

org.drools.mvel.evaluators.StrEvaluatorDefinition

All Implemented Interfaces:

Externalizable, Serializable, EvaluatorDefinition, EvaluatorDefinition

public class StrEvaluatorDefinition
extends Object
implements EvaluatorDefinition

The implementation of the 'str' evaluator definition.

The str compares two string values.

Lets look at some examples:

$m : Message( routingValue str[startsWith] "R1" )

$m : Message( routingValue str[endsWith] "R2" )

$m : Message( routingValue str[length] 17 )

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	StrEvaluatorDefinition.Operations
static class	StrEvaluatorDefinition.StrEvaluator

Nested classes/interfaces inherited from interface org.drools.compiler.rule.builder.EvaluatorDefinition

EvaluatorDefinition.Target

Field Summary

Fields

Modifier and Type	Field	Description
static final org.drools.drl.parser.impl.Operator	NOT_STR_COMPARE
static final org.drools.drl.parser.impl.Operator	STR_COMPARE
protected static final String	strOp

Constructor Summary

Constructors

Constructor	Description
StrEvaluatorDefinition()

Method Summary

Modifier and Type	Method	Description
org.drools.base.rule.accessor.Evaluator	getEvaluator(org.drools.base.base.ValueType type, String operatorId, boolean isNegated, String parameterText)
org.drools.base.rule.accessor.Evaluator	getEvaluator(org.drools.base.base.ValueType type, String operatorId, boolean isNegated, String parameterText, EvaluatorDefinition.Target leftTarget, EvaluatorDefinition.Target rightTarget)
org.drools.base.rule.accessor.Evaluator	getEvaluator(org.drools.base.base.ValueType type, org.drools.drl.parser.impl.Operator operator)
org.drools.base.rule.accessor.Evaluator	getEvaluator(org.drools.base.base.ValueType type, org.drools.drl.parser.impl.Operator operator, String parameterText)
String[]	getEvaluatorIds()
EvaluatorDefinition.Target	getTarget()
boolean	isNegatable()
void	readExternal(ObjectInput in)
boolean	supportsType(org.drools.base.base.ValueType type)
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Field Details

strOp

protected static final String strOp

STR_COMPARE

public static final org.drools.drl.parser.impl.Operator STR_COMPARE

NOT_STR_COMPARE

public static final org.drools.drl.parser.impl.Operator NOT_STR_COMPARE

Constructor Details

StrEvaluatorDefinition

public StrEvaluatorDefinition()

Method Details

getEvaluator

public org.drools.base.rule.accessor.Evaluator getEvaluator(org.drools.base.base.ValueType type,
 org.drools.drl.parser.impl.Operator operator)

Specified by:

getEvaluator in interface EvaluatorDefinition

getEvaluator

public org.drools.base.rule.accessor.Evaluator getEvaluator(org.drools.base.base.ValueType type,
 org.drools.drl.parser.impl.Operator operator,
 String parameterText)

Specified by:

getEvaluator in interface EvaluatorDefinition

getEvaluator

public org.drools.base.rule.accessor.Evaluator getEvaluator(org.drools.base.base.ValueType type,
 String operatorId,
 boolean isNegated,
 String parameterText)

Specified by:

getEvaluator in interface EvaluatorDefinition

getEvaluator

public org.drools.base.rule.accessor.Evaluator getEvaluator(org.drools.base.base.ValueType type,
 String operatorId,
 boolean isNegated,
 String parameterText,
 EvaluatorDefinition.Target leftTarget,
 EvaluatorDefinition.Target rightTarget)

Specified by:

getEvaluator in interface EvaluatorDefinition

getEvaluatorIds

public String[] getEvaluatorIds()

Specified by:

getEvaluatorIds in interface EvaluatorDefinition

getTarget

public EvaluatorDefinition.Target getTarget()

Specified by:

getTarget in interface EvaluatorDefinition

isNegatable

public boolean isNegatable()

Specified by:

isNegatable in interface EvaluatorDefinition

supportsType

public boolean supportsType(org.drools.base.base.ValueType type)

Specified by:

supportsType in interface EvaluatorDefinition

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException