| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| GCombinedNestedIterator |
|
| 0.0;0 |
| 1 | /* | |
| 2 | This file is part of Combean. | |
| 3 | ||
| 4 | Combean is free software; you can redistribute it and/or modify | |
| 5 | it under the terms of the GNU General Public License as published by | |
| 6 | the Free Software Foundation; either version 2 of the License, or | |
| 7 | (at your option) any later version. | |
| 8 | ||
| 9 | Combean is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | GNU General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU General Public License | |
| 15 | along with Foobar; if not, write to the Free Software | |
| 16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 17 | */ | |
| 18 | package net.sourceforge.combean.util | |
| 19 | ||
| 20 | /** | |
| 21 | * Similar to a nested iterator. The only difference is that the combined nested | |
| 22 | * iterator returns pairs of the elements of the inner and the outer iteration as | |
| 23 | * result of next(). If the inner or the outer iteration return Lists, these | |
| 24 | * Lists can be flattened into a single list as result of next(). | |
| 25 | */ | |
| 26 | class GCombinedNestedIterator extends GNestedIterator { | |
| 27 | ||
| 28 | private boolean flattenResult = true; | |
| 29 | ||
| 30 | /** | |
| 31 | * Constructor | |
| 32 | * | |
| 33 | * @params flattenResult flag whether the results of the inner and outer | |
| 34 | * iteration shall be flattened into one List if they are Lists themselves | |
| 35 | * @params outerIterable Iterable for the outer iteration | |
| 36 | * @params getInnerItForOuter Closure which returns the inner iterator | |
| 37 | */ | |
| 38 | public GCombinedNestedIterator(boolean flattenResult, | |
| 39 | Iterable outerIterable, Closure getInnerItForOuter) { | |
| 40 | 20 | super(outerIterable, getInnerItForOuter); |
| 41 | 20 | this.flattenResult = flattenResult; |
| 42 | } | |
| 43 | ||
| 44 | /** | |
| 45 | * Constructor | |
| 46 | * | |
| 47 | * @params flattenResult flag whether the results of the inner and outer | |
| 48 | * iteration shall be flattened into one List if they are Lists themselves | |
| 49 | * @params itOuter Iterator for the outer iteration | |
| 50 | * @params getInnerItForOuter Closure which returns the inner iterator | |
| 51 | */ | |
| 52 | public GCombinedNestedIterator(boolean flattenResult, | |
| 53 | Iterator itOuter, Closure getInnerItForOuter) { | |
| 54 | 45 | super(itOuter, getInnerItForOuter); |
| 55 | 45 | this.flattenResult = flattenResult; |
| 56 | } | |
| 57 | ||
| 58 | Object next() { | |
| 59 | 230 | Object innerObj = super.next(); |
| 60 | 230 | if (this.flattenResult) { |
| 61 | 60 | assert getOuter() instanceof List; |
| 62 | 60 | return getOuter() + innerObj; |
| 63 | } | |
| 64 | 170 | return [getOuter(), innerObj]; |
| 65 | } | |
| 66 | } |