StandardOP

package services.impl;

import java.util.List;
import java.lang.reflect.Method;

public class StandardOPs {

	public static boolean oclIsundefined(Object o) {
		if (o == null)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	
	public static boolean oclIsInvaild(Object o) {
		if (o == null)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	
	public static boolean isEmpty(List list)
	{
		if (list.isEmpty()) 
		{
			return true;
		}
		else 
		{
			return false;
		}
	}
	
	public static boolean notEmpty(List list)
	{
		if (!list.isEmpty()) 
		{
			return true;
		}
		else 
		{
			return false;
		}
	}
	
	public static int size(List list)
	{
		return list.size();
	}
	
	public static boolean isInteger(Object temp){
		if(temp instanceof Integer)
			return true;
		else 
			return false;
	}
	
	public static boolean isReal(Object temp){
		if(temp instanceof Float || temp instanceof Double)
			return true;
		else 
			return false;
	}	
	
	public static boolean includes(List list, Object o)
	{	
		if (list.contains(o))
		{
			return true;
		}
		else 
		{
			return false;
		}	
	}
	
	public static boolean excludes(List list, Object o)
	{	
		if (!list.contains(o))
		{
			return true;
		}
		else 
		{
			return false;
		}	
	}	
	
	public static boolean includesAll(List list, List olist)
	{	
		if (list.containsAll(olist))
		{
			return true;
		}
		else 
		{
			return false;
		}	
	}
	
	public static boolean excludesAll(List list, List olist)
	{	
		if (!list.containsAll(olist))
		{
			return true;
		}
		else 
		{
			return false;
		}	
	}

	public static boolean isUnique(List list, String attribute) { 
		
		Object[] l = list.toArray();
		for (int i = 0; i < l.length; i++) {
			for (int j = i+1; j < l.length; j++) {

				 try {
					 System.out.println("i: " + String.valueOf(i));
					 System.out.println("j: " + String.valueOf(j));
					 
					 Method getO1Attri = l[i].getClass().getMethod("get" + attribute);
					 Method getO2Attri = l[j].getClass().getMethod("get" + attribute);
					 
					 Class type1 = getO1Attri.getReturnType();
					 System.out.println(type1);
					 if (type1 == String.class) {
						 String o1 = (String) getO1Attri.invoke(l[i]);
						 String o2 = (String) getO2Attri.invoke(l[j]);
						 
						 System.out.println("o1: " + o1);
						 System.out.println("o2: " + o2);
						 
						 if (o1.equals(o2)) {
							 return false;
						 }
					 } else if(type1 == int.class) {
						 
						 int o1 = (int) getO1Attri.invoke(l[i]);
						 int o2 = (int) getO2Attri.invoke(l[j]);
						 
						 System.out.println("o1: " + String.valueOf(o1));
						 System.out.println("o2: " + String.valueOf(o2));
						 
						 if (o1 == o2) {
							 return false;
						 }
						 
					 }
				 } catch (Exception e ){
					 e.printStackTrace();
				 }
			}
		}
		return true;
			
	}

}