/* XXL: The eXtensible and fleXible Library for data processing

Copyright (C) 2000-2011 Prof. Dr. Bernhard Seeger
                        Head of the Database Research Group
                        Department of Mathematics and Computer Science
                        University of Marburg
                        Germany

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library;  If not, see <http://www.gnu.org/licenses/>. 

    http://code.google.com/p/xxl/

*/

package xxl.core.xxlinq.usecases;

import static xxl.core.xxlinq.columns.ColumnUtils.col;
import static xxl.core.xxlinq.columns.ColumnUtils.colOBJCALL;
import static xxl.core.xxlinq.columns.ColumnUtils.val;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import xxl.core.functions.Functional;
import xxl.core.relational.tuples.Tuple;
import xxl.core.xxlinq.AdvTupleCursor;

public class SelectAnonymousTypes2 extends XXLinqExample {

//	LINQ Example: http://msdn.microsoft.com/en-us/vcsharp/aa336758#SelectAnonymousTypes2

	@Override
	public void executeXXLinq() {
		List<Integer> numbers = Arrays.asList( 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 ); 
		final List<String> digits = new ArrayList<String>();
		digits.add("zero");
		digits.add("one");
		digits.add("two");
		digits.add("three");
		digits.add("four");
		digits.add("five");
		digits.add("six");
		digits.add("seven");
		digits.add("eight");
		digits.add("nine");
		digits.add("ten");
	
		//FIXME Arrays.ArrayList is not accessible throught  public method
		// so it does not work with Arrays.asList lists produced
		AdvTupleCursor tupleCursor = new AdvTupleCursor(numbers, "test").
		select(NewLINQFunctions.function("Digit", new Functional.UnaryFunction<Integer, String>(){

					@Override
					public String invoke(Integer arg) {					
						return digits.get(arg);
					}
					
				}, col("test.value")),
				NewLINQFunctions.function("Even", new Functional.UnaryFunction<Integer, Boolean>(){

					@Override
					public Boolean invoke(Integer arg) {					
						return arg % 2 == 0;
					}
					
				}, col("test.value")));
			for(Tuple obj : tupleCursor){
				System.out.println(obj);
			}
	}

}