Package org.drools.mvel.extractors

Class MVELObjectClassFieldReader

java.lang.Object

org.drools.core.base.BaseClassFieldReader

org.drools.core.base.extractors.BaseObjectClassFieldReader

org.drools.mvel.extractors.MVELObjectClassFieldReader

All Implemented Interfaces:

Externalizable, Serializable, org.drools.core.rule.accessor.ReadAccessor, MVELCompileable, MVELClassFieldReader

public class MVELObjectClassFieldReader
extends org.drools.core.base.extractors.BaseObjectClassFieldReader
implements MVELCompileable, MVELClassFieldReader

A class field extractor that uses MVEL engine to extract the actual value for a given expression. We use MVEL to resolve nested accessor expressions.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
MVELObjectClassFieldReader()
MVELObjectClassFieldReader(String className, String expr, boolean typesafe)

Method Summary

Modifier and Type	Method	Description
void	compile(MVELDialectRuntimeData runtimeData)
void	compile(MVELDialectRuntimeData runtimeData, org.drools.core.definitions.rule.impl.RuleImpl rule)
static void	doCompile(MVELClassFieldReader target, MVELDialectRuntimeData runtimeData, Object evaluationContext)
boolean	equals(Object obj)
String	getClassName()
Object	getEvaluationContext()
String	getExpression()
Object	getValue(org.drools.core.common.ReteEvaluator reteEvaluator, Object object)
int	hashCode()
boolean	isTypeSafe()
void	readExternal(ObjectInput in)
void	setEvaluationContext(Object evaluationContext)
void	setExecutableStatement(org.mvel2.compiler.ExecutableStatement expression)
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class org.drools.core.base.extractors.BaseObjectClassFieldReader

getBooleanValue, getByteValue, getCharValue, getDoubleValue, getFloatValue, getHashCode, getIntValue, getLongValue, getNativeReadMethod, getNativeReadMethodName, getShortValue, isNullValue

Methods inherited from class org.drools.core.base.BaseClassFieldReader

getExtractToClass, getExtractToClassName, getHashCode, getIndex, getValue, getValueType, isGlobal, isNullValue, isSelfReference, setFieldType, setIndex, setValueType

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.drools.mvel.extractors.MVELClassFieldReader

setFieldType, setValueType

Constructor Detail

MVELObjectClassFieldReader

public MVELObjectClassFieldReader()

MVELObjectClassFieldReader

public MVELObjectClassFieldReader(String className,
                                  String expr,
                                  boolean typesafe)

Method Detail

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class org.drools.core.base.BaseClassFieldReader

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class org.drools.core.base.BaseClassFieldReader

Throws:

IOException

setExecutableStatement

public void setExecutableStatement(org.mvel2.compiler.ExecutableStatement expression)

Specified by:

setExecutableStatement in interface MVELClassFieldReader

getClassName

public String getClassName()

Specified by:

getClassName in interface MVELClassFieldReader

isTypeSafe

public boolean isTypeSafe()

Specified by:

isTypeSafe in interface MVELClassFieldReader

getExpression

public String getExpression()

Specified by:

getExpression in interface MVELClassFieldReader

getEvaluationContext

public Object getEvaluationContext()

Specified by:

getEvaluationContext in interface MVELClassFieldReader

setEvaluationContext

public void setEvaluationContext(Object evaluationContext)

Specified by:

setEvaluationContext in interface MVELClassFieldReader

compile

public void compile(MVELDialectRuntimeData runtimeData)

Specified by:

compile in interface MVELCompileable

compile

public void compile(MVELDialectRuntimeData runtimeData,
                    org.drools.core.definitions.rule.impl.RuleImpl rule)

Specified by:

compile in interface MVELCompileable

doCompile

public static void doCompile(MVELClassFieldReader target,
                             MVELDialectRuntimeData runtimeData,
                             Object evaluationContext)

getValue

public Object getValue(org.drools.core.common.ReteEvaluator reteEvaluator,
                       Object object)

Specified by:

getValue in interface org.drools.core.rule.accessor.ReadAccessor

Specified by:

getValue in class org.drools.core.base.extractors.BaseObjectClassFieldReader

hashCode

public int hashCode()

Overrides:

hashCode in class org.drools.core.base.BaseClassFieldReader

equals

public boolean equals(Object obj)

Overrides:

equals in class org.drools.core.base.BaseClassFieldReader

toString

public String toString()

Overrides:

toString in class Object