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package org.sfm.utils.conv;

import org.sfm.reflect.Getter;

import java.sql.Array;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;

public class ArrayConverter implements Converter {

	private final Class elementClass;
	private final Getter elementGetter;
	
	public ArrayConverter(Class elementClass, Getter elementGetter) {
		this.elementClass = elementClass;
		this.elementGetter = elementGetter;
	}

	@Override
	public E[] convert(Array array) throws Exception {
		List list = new ArrayList();
		
		ResultSet rs = array.getResultSet();
		try {
			while(rs.next()) {
				list.add(elementGetter.get(rs));
			}
			
		} finally {
			rs.close();
		}
		
		@SuppressWarnings("unchecked")
		E[] elements = (E[]) java.lang.reflect.Array.newInstance(elementClass, list.size());
		return list.toArray(elements);
	}

}