com.neurosys.etl.common.filters

Class CriteriaFilter<T>

java.lang.Object

com.neurosys.etl.common.filters.CriteriaFilter<T>

All Implemented Interfaces:

Lookup, Predicate<T>, org.apache.commons.collections.Transformer

Direct Known Subclasses:

BastardProductFilter, ConstantEqualsCheckFilter, EntityChainAccessCheckFilter, EntityTypeFilter, EqualsCheckFilter, RegExCheckFilter, WebFilterPredicate

public abstract class CriteriaFilter<T>
extends Object
implements org.apache.commons.collections.Transformer, Lookup, org.apache.commons.collections.Predicate, Predicate<T>

Any filter that implements a Criteria and fulfills the role of a Transformer and a Predicate. It applies checkCriteria(Object) over the input and returns the same input object if it passes the criteria.

Author:

Arjun Dhar

See Also:

PredicateLinkedTransformer

Constructor Summary

Constructors

Constructor and Description
CriteriaFilter()

Method Summary

Modifier and Type	Method and Description
protected abstract boolean	checkCriteria(T input) Checks the business logic against which the Predicate will succeed (response as true) or fail (false).
boolean	evaluate(Object input)
String	getErrorMsg() If specified will provide getErrorMsg() in the ContinueProcessingException
void	setErrorMsg(String errorMsg) If specified will provide getErrorMsg() in the ContinueProcessingException
boolean	test(T input)
Object	transform(Object input) For a Given String, Lookup a value for it

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, isEqual, negate, or

Constructor Detail

CriteriaFilter

public CriteriaFilter()

Method Detail

transform

public Object transform(Object input)

Description copied from interface: Lookup

For a Given String, Lookup a value for it

Specified by:

transform in interface Lookup

Specified by:

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

test

public boolean test(T input)

Specified by:

test in interface Predicate<T>

evaluate

public boolean evaluate(Object input)

checkCriteria

protected abstract boolean checkCriteria(T input)
                                  throws ContinueProcessingException,
                                         BreakChainException,
                                         Exception

Checks the business logic against which the Predicate will succeed (response as true) or fail (false).
If the Failure needs to be accompanied with additional reasons then one may use ContinueProcessingException.

For all other major exceptions simply throw an Exception type.

Parameters:

input -

Returns:

Throws:

ContinueProcessingException - skipping further record processing

BreakChainException - for explained business logic failed conditions

Exception - for any serious Error

getErrorMsg

public String getErrorMsg()

If specified will provide getErrorMsg() in the ContinueProcessingException

Default value:

null

setErrorMsg

public void setErrorMsg(String errorMsg)

If specified will provide getErrorMsg() in the ContinueProcessingException

Default value:

null