org.drools.core.base.extractors
Class MVELObjectClassFieldReader

java.lang.Object
  org.drools.core.base.BaseClassFieldReader
      org.drools.core.base.extractors.BaseObjectClassFieldReader
          org.drools.core.base.extractors.MVELObjectClassFieldReader

All Implemented Interfaces:

Externalizable, Serializable, MVELClassFieldReader, MVELCompileable, InternalReadAccessor, ReadAccessor

public class MVELObjectClassFieldReader
extends BaseObjectClassFieldReader
implements Externalizable, 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

MVELObjectClassFieldReader()

MVELObjectClassFieldReader(String className, String expr, boolean typesafe)

Method Summary

void	compile(MVELDialectRuntimeData runtimeData)
static void	doCompile(MVELClassFieldReader target, MVELDialectRuntimeData runtimeData)
boolean	equals(Object obj)
String	getClassName()
String	getExpression()
Object	getValue(InternalWorkingMemory workingMemory, Object object)
int	hashCode()
boolean	isTypeSafe()
void	readExternal(ObjectInput in)
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

getBigDecimalValue, getBigDecimalValue, getBigIntegerValue, getBigIntegerValue, getBooleanValue, getByteValue, getCharValue, getDoubleValue, getExtractToClass, getExtractToClassName, getFloatValue, getHashCode, getIndex, getIntValue, getLongValue, getShortValue, 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.core.base.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

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

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

compile

public void compile(MVELDialectRuntimeData runtimeData)

Specified by:

compile in interface MVELCompileable

doCompile

public static void doCompile(MVELClassFieldReader target,
                             MVELDialectRuntimeData runtimeData)

getValue

public Object getValue(InternalWorkingMemory workingMemory,
                       Object object)

Specified by:

getValue in interface InternalReadAccessor

Specified by:

getValue in class BaseObjectClassFieldReader

hashCode

public int hashCode()

Overrides:

hashCode in class BaseClassFieldReader

equals

public boolean equals(Object obj)

Overrides:

equals in class BaseClassFieldReader

toString

public String toString()

Overrides:

toString in class Object