Set<Join> joins = SQL.parseJoins(Arrays.asList(new String[]{
"foo.col1 = bar.col1", "foo.col2 = bar.col2"}));
assertEquals(1, joins.size());
Join join = (Join) joins.iterator().next();
assertEquals(Arrays.asList(new Attribute[]{bar_col1, bar_col2}),
join.attributes1());
assertEquals(Arrays.asList(new Attribute[]{foo_col1, foo_col2}),
join.attributes2());
assertEquals(foo_col1, join.equalAttribute(bar_col1));
}