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| package org.qedeq.kernel.dto.list; |
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| import java.util.Arrays; |
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| import java.util.HashSet; |
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| import java.util.Iterator; |
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| import java.util.Set; |
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| import org.qedeq.kernel.base.list.Element; |
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| import org.qedeq.kernel.base.list.ElementList; |
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| public final class ElementSet { |
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| private final Set elements; |
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73605
| public ElementSet() {
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| this.elements = new HashSet();
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| } |
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| public ElementSet(final Element[] elements) {
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| if (elements == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as element array is not allowed"); |
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| } |
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| this.elements = new HashSet(Arrays.asList(elements));
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| } |
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13845
| public ElementSet(final ElementSet set) {
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| if (set == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as set is not allowed"); |
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| } |
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| this.elements = new HashSet(set.elements);
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| } |
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| public ElementSet(final ElementList element) {
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| if (element == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as element is not allowed"); |
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| } |
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| if (element.isAtom()) {
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| throw new IllegalArgumentException(
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| "text as element is not allowed"); |
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| } |
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| this.elements = new HashSet(element.getElements());
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| } |
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| public final boolean contains(final Element element) {
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| if (element == null) {
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| throw new IllegalArgumentException("NullPointer as element is not allowed");
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| } |
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| return this.elements.contains(element);
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| } |
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13845
| public final boolean isEmpty() {
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| return elements.isEmpty();
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| } |
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| public final boolean isSubset(final ElementSet set) {
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| if (set == null) {
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| throw new IllegalArgumentException("NullPointer as set is not allowed");
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| } |
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| return this.elements.containsAll(set.elements);
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| } |
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10738
| public final ElementSet add(final Element element) {
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10738
| if (element == null) {
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| throw new IllegalArgumentException("NullPointer as element is not allowed");
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| } |
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10738
| elements.add(element);
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10738
| return this;
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| } |
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64204
| public final ElementSet union(final ElementSet set) {
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| if (set == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as set is not allowed"); |
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| } |
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64204
| elements.addAll(set.elements);
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64204
| return this;
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| } |
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574
| public final ElementSet remove(final Element element) {
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| if (element == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as element is not allowed"); |
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| } |
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| elements.remove(element);
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| return this;
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| } |
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| public final ElementSet minus(final ElementSet set) {
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| if (set == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as set is not allowed"); |
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| } |
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| this.elements.removeAll(set.elements);
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| return this;
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| } |
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| public final ElementSet intersection(final ElementSet set) {
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| if (set == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as set is not allowed"); |
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| } |
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| this.elements.retainAll(set.elements);
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| return this;
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| } |
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13845
| public final ElementSet newIntersection(final ElementSet set) {
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13845
| if (set == null) {
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| throw new IllegalArgumentException(
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| "NullPointer as set is not allowed"); |
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| } |
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251 |
13845
| final ElementSet result = new ElementSet(this);
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252 |
13845
| result.elements.retainAll(set.elements);
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253 |
13845
| return result;
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| } |
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268 |
0
| public final ElementSet newDelta(final ElementSet set) {
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269 |
0
| if (set == null) {
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270 |
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| throw new IllegalArgumentException(
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| "NullPointer as set is not allowed"); |
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272 |
| } |
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273 |
0
| final ElementSet union = new ElementSet(this);
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274 |
0
| union.union(set);
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275 |
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| final ElementSet intersection = new ElementSet(this);
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276 |
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| intersection.intersection(set);
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277 |
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| union.minus(intersection);
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278 |
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| return union;
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| } |
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280 |
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281 |
0
| public final boolean equals(final Object obj) {
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282 |
0
| if (obj == null) {
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283 |
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| return false;
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284 |
| } |
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285 |
0
| if (obj.getClass() == ElementSet.class) {
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286 |
0
| return this.elements.equals(((ElementSet) obj).elements);
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| } |
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288 |
0
| return false;
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289 |
| } |
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290 |
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291 |
0
| public final int hashCode() {
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292 |
0
| return elements.hashCode();
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293 |
| } |
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294 |
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295 |
35
| public final String toString() {
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296 |
35
| final StringBuffer result = new StringBuffer();
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297 |
35
| result.append("{");
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298 |
35
| final Iterator iterator = elements.iterator();
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299 |
35
| while (iterator.hasNext()) {
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300 |
35
| result.append(iterator.next());
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301 |
35
| if (iterator.hasNext()) {
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302 |
0
| result.append(", ");
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303 |
| } |
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| } |
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305 |
35
| result.append("}");
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306 |
35
| return result.toString();
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307 |
| } |
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308 |
| |
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309 |
| } |