com.neurosys.etl.common.transformers

Class ConstructEntityTransformer<T,R>

java.lang.Object

com.neurosys.etl.common.transformers.ConstructEntityTransformer<T,R>

Type Parameters:

T - as input type to Constructor

R - as required output type

All Implemented Interfaces:

FunctionTransformer<T,R>, Function<T,R>, org.apache.commons.collections.Transformer

public class ConstructEntityTransformer<T,R>
extends Object
implements FunctionTransformer<T,R>

Given a parameter or List of params of Constructor for type required; produce the object of type

Author:

Arjun Dhar

Constructor Summary

Constructors

Constructor and Description
ConstructEntityTransformer()
ConstructEntityTransformer(Class<R> requiredClass, Class<R>[] requiredConstructorArgs) Exists as a convenience alternate to ConstructEntityTransformer(Constructor) for Spring SpeL configs.
ConstructEntityTransformer(Constructor<R> required) Constructor of the required Class.

Method Summary

Modifier and Type	Method and Description
Constructor<R>	getRequired()
void	setRequired(Constructor<R> required)
Object	transform(Object input)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.neurosys.etl.common.transformers.FunctionTransformer

apply

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Constructor Detail

ConstructEntityTransformer

public ConstructEntityTransformer()

ConstructEntityTransformer

public ConstructEntityTransformer(Constructor<R> required)

Constructor of the required Class. TODO: remove, if SPeL better alternative exists E.g.: of expressions tried and failed

• T(javax.mail.internet.InternetAddress).class.getConstructor(Class.forName('java.lang.String'))
• T(javax.mail.internet.InternetAddress).class.getConstructor(T(Class).forName(\"java.lang.String'\"))
• T(javax.mail.internet.InternetAddress).class.getConstructor(T(String).class)

All the above, providing Class type as a param to the getConstructor() causing a failure. So providing a simple work around

ConstructEntityTransformer

public ConstructEntityTransformer(Class<R> requiredClass,
                                  Class<R>[] requiredConstructorArgs)
                           throws NoSuchMethodException,
                                  SecurityException

Exists as a convenience alternate to ConstructEntityTransformer(Constructor) for Spring SpeL configs.

Parameters:

requiredClass - as Class

requiredConstructorArgs - as array of Class

Throws:

NoSuchMethodException

SecurityException

Method Detail

transform

public Object transform(Object input)

Specified by:

transform in interface org.apache.commons.collections.Transformer

getRequired

public Constructor<R> getRequired()

setRequired

public void setRequired(Constructor<R> required)