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Java library to map flat record - ResultSet, csv - to java object with minimum configuration and low footprint.

There is a newer version: 9.0.2

package org.simpleflatmapper.reflect.meta;

import org.simpleflatmapper.reflect.InstantiatorDefinition;
import org.simpleflatmapper.util.Predicate;

import java.lang.reflect.Type;
import java.util.List;
import java.util.Optional;

public class OptionalPropertyFinder extends PropertyFinder> {


    private final OptionalClassMeta optionalClassMeta;
    private final PropertyFinder propertyFinder;
    private final ClassMeta innerMeta;

    public OptionalPropertyFinder(OptionalClassMeta optionalClassMeta, Predicate> propertyFilter, boolean selfScoreFullName) {
        super(propertyFilter, selfScoreFullName);
        this.optionalClassMeta = optionalClassMeta;
        innerMeta = optionalClassMeta.getInnerMeta();
        this.propertyFinder = innerMeta != null ? innerMeta.newPropertyFinder(propertyFilter) : null;
	}


    @SuppressWarnings("unchecked")
    @Override
    public void lookForProperties(
            PropertyNameMatcher propertyNameMatcher,
            Object[] properties, FoundProperty matchingProperties,
            PropertyMatchingScore score, boolean allowSelfReference, PropertyFinderTransformer propertyFinderTransformer){
        propertyFinderTransformer.apply(propertyFinder).lookForProperties(propertyNameMatcher, properties, new FoundProperty() {
            @Override
            public > void found(P propertyMeta, Runnable selectionCallback, PropertyMatchingScore score) {
                matchingProperties.found(getSubPropertyMeta(propertyMeta), selectionCallback, score);
            }
        }, score, allowSelfReference, propertyFinderTransformer);
    }

    @SuppressWarnings("unchecked")
    private  PropertyMeta, E> getSubPropertyMeta(PropertyMeta property) {
        return new SubPropertyMeta, I, E>(
                optionalClassMeta.getReflectionService(),
                (PropertyMeta, I>) optionalClassMeta.getProperty(),
                (PropertyMeta)property);
    }

    @Override
    public List getEligibleInstantiatorDefinitions() {
        return optionalClassMeta.getInstantiatorDefinitions();
    }

    @Override
    public PropertyFinder getSubPropertyFinder(PropertyMeta owner) {
        if (owner.equals(optionalClassMeta.getProperty())) {
            return propertyFinder;
        }
        throw new IllegalArgumentException("Unexpected owner " + owner);
    }

    @Override
    public PropertyFinder getOrCreateSubPropertyFinder(SubPropertyMeta subPropertyMeta) {
        return getSubPropertyFinder(subPropertyMeta.getOwnerProperty());
    }


    @Override
    public Type getOwnerType() {
        return optionalClassMeta.getType();
    }
}