Java Iterable equal(Iterable it1, Iterable it2)

Description

equal

License

Open Source License

Declaration

public static boolean equal(Iterable it1, Iterable it2) 

Method Source Code

//package com.java2s;
/**//  w w  w .  ja  v  a  2s.  c o m
 * Copyright (C) 2012 - present by OpenGamma Inc. and the OpenGamma group of companies
 *
 * Please see distribution for license.
 */

import java.util.Iterator;

public class Main {
    public static boolean equal(Object o1, Object o2) {
        Iterator i1 = null;
        Iterator i2 = null;

        if (o1 instanceof Iterator) {
            i1 = (Iterator) o1;
        } else if (o1 instanceof Iterable) {
            i1 = ((Iterable) o1).iterator();
        }
        if (o2 instanceof Iterator) {
            i2 = (Iterator) o2;
        } else if (o2 instanceof Iterable) {
            i2 = ((Iterable) o2).iterator();
        }

        if (i1 != null && i2 != null) {
            return equal(i1, i2);
        } else {
            if (o1 == null && o2 == null) {
                return true;
            } else if (o1 != null && o2 != null) {
                return o1.equals(o2) || o2.equals(o1);
            } else {
                return false;
            }
        }
    }

    public static boolean equal(Iterable it1, Iterable it2) {
        Iterator i1 = it1.iterator();
        Iterator i2 = it2.iterator();
        return equal(i1, i2);
    }

    public static boolean equal(Iterator i1, Iterator i2) {
        if (i1 == i2)
            return true;
        if ((i1.hasNext() && !i2.hasNext()) || (!i1.hasNext() && i2.hasNext())) {
            return false;
        }
        while (i1.hasNext() && i2.hasNext()) {
            Object e1 = i1.next();
            Object e2 = i2.next();
            if (e1 != e2 && !equal(e1, e2))
                return false;
            if ((i2.hasNext() && !i1.hasNext()) || (!i2.hasNext() && i1.hasNext()))
                return false;
        }
        return true;
    }
}

Related

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2. containsSame(Iterable coll, Object obj)
3. convertIterable(final Iterable> iterables)
4. createDelimitedString(Iterable iterable, String delimiter)
5. createUpdateTemplate(String table, Iterable columns)
6. equalsIterablesInOrder(Iterable i1, Iterable i2)
7. fillFromIterable(C c, Iterable i)
8. getAny(Iterable iterable)
9. getByIndex(Iterable iterable, int index)