net.anwiba.tools.graphml.utilities.Node Maven / Gradle / Ivy
/*
* #%L
* *
* %%
* Copyright (C) 2007 - 2017 Andreas W. Bartels ([email protected])
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
package net.anwiba.tools.graphml.utilities;
import java.util.HashSet;
import java.util.Set;
public class Node {
Set> subchildren = new HashSet<>();
Set> notContainingBySubchildren = new HashSet<>();
Set> children = new HashSet<>();
private final T object;
public Node(final T object) {
this.object = object;
}
public void add(final Node childe) {
this.children.add(childe);
}
public void remove(final Node childe) {
this.children.remove(childe);
}
public Iterable> children() {
return this.children;
}
public T getObject() {
return this.object;
}
public boolean childrenContains(final Node node) {
if (this.subchildren.contains(node)) {
return true;
}
if (this.notContainingBySubchildren.contains(node)) {
return false;
}
for (final Node child : this.children) {
if (child.contains(node)) {
this.subchildren.add(node);
return true;
}
}
this.notContainingBySubchildren.add(node);
return false;
}
public boolean contains(final Node node) {
if (this.children.contains(node) || this.subchildren.contains(node)) {
return true;
}
if (this.notContainingBySubchildren.contains(node)) {
return false;
}
for (final Node child : this.children) {
if (child.contains(node)) {
this.subchildren.add(node);
return true;
}
}
this.notContainingBySubchildren.add(node);
return false;
}
public void reset() {
this.subchildren.clear();;
this.notContainingBySubchildren.clear();
}
}