org.sfm.jdbc.impl.getter.MapperGetterAdapter Maven / Gradle / Ivy

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package org.sfm.jdbc.impl.getter;

import org.sfm.map.Mapper;
import org.sfm.reflect.Getter;
import org.sfm.utils.Predicate;

public final class MapperGetterAdapter implements Getter {

	private final Mapper mapper;
    private final Predicate nullChecker;
	
	public MapperGetterAdapter(Mapper mapper, Predicate nullChecker) {
        if (mapper == null) {
            throw new NullPointerException("mapper is null");
        }
        if (nullChecker == null) {
            throw new NullPointerException("nullChecker is null");
        }
		this.mapper = mapper;
        this.nullChecker = nullChecker;
    }

	@Override
	public P get(S target) throws Exception {
        if (nullChecker.test(target)){
            return null;
        }
		return mapper.map(target);
	}

    @Override
    public String toString() {
        return "MapperGetterAdapter{" +
                "mapper=" + mapper +
                '}';
    }
}