Commit d7b7238a authored by David Trachtenherz's avatar David Trachtenherz
Browse files

SubComponentIterator class and findSubComponentsRecursively method removed.

refs 779
parent 5ffb2005
......@@ -19,18 +19,10 @@ package org.fortiss.af3.component.utils;
import static org.conqat.lib.commons.reflect.ReflectionUtils.pickInstanceOf;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Queue;
import java.util.Set;
import org.eclipse.emf.ecore.EObject;
import org.fortiss.af3.component.model.Component;
......@@ -48,15 +40,13 @@ import org.fortiss.tooling.kernel.model.INamedElement;
import org.fortiss.tooling.kernel.model.IProjectRootElement;
import org.fortiss.tooling.kernel.utils.KernelModelElementUtils;
* Utility methods for accessing parts of the component architecture.
* @author ratiu
* @author $Author: hoelzl $
* @version $Rev: 18709 $
* @ConQAT.Rating YELLOW Hash: 4EEB8B9A917A95DDFE41099AF9CF1E91
* @ConQAT.Rating YELLOW Hash: 0FD96F1F8D9F600522BF30F433B74F16
public class ComponentArchitectureUtils {
......@@ -149,125 +139,6 @@ public class ComponentArchitectureUtils {
return null;
* Iterates recursively over all sub-components of a given parent component in BFS order.
* TODO (FH): this implementation is too complicated; use
* org.fortiss.tooling.kernel.utils.KernelModelElementUtils.findContentElementByNameAndClass(
* EObject,
* String, Class<T>)
* DT: The iterator just does a standard BFS. According to the test
* {@link SubComponentIteratorAndFindingTest#testSubComponentIterator()} it works without any
* problems.
* Or did you mean, that finding given sub-components {@link #findSubComponentsRecursively} is
* too complicated:
* well, I admit, that it isn't as obvious as
* KernelModelElementUtils.findContentElementByNameAndClass(..) but it works correctly, too (see
* {@link SubComponentIteratorAndFindingTest#testFindSubComponentsRecursively()}.
* The main difference to
* {@link org.fortiss.tooling.kernel.utils.KernelModelElementUtils#findContentElementByNameAndClass(EObject, String, Class)}
* is that {@link #findSubComponentsRecursively} is optimized for finding several sub-components
* at once (with names given in a collection):
* using KernelModelElementUtils.findContentElementByNameAndClass(..) to find N sub-components
* would entail N iterations over all elements of the entire model, while
* {@link #findSubComponentsRecursively} uses only one iteration over solely components and
* hence is way more efficient. Of course, it looks a bit more complicated, yet it works well.
* If you would like, I will add more comments in the method to explain its function better.
* Dan: I agree here with FloH. This quite complex implementation solves a problem that we DO
* NOT have:
* this functionality is not at all a bottleneck in performance of AF3.
* I would also strongly vote for simplicity, reuse, clarity and directness in the code.
public static class SubComponentIterator implements Iterator<Component> {
* Contains the sub-components to be processed.
protected Queue<Component> subComps;
* Constructs a {@link SubComponentIterator} with the given parent component. The parent
* component itself will not be returned by the iterator.
public SubComponentIterator(Component parent) {
this(parent, false);
* Constructs a {@link SubComponentIterator} with the given parent component. The parent
* component itself will not be returned by the iterator. {@code includeParent} specifies if
* the {@code parent} should be included as first element.
public SubComponentIterator(Component parent, boolean includeParent) {
if(includeParent) {
subComps = new ArrayDeque<Component>();
} else {
subComps = new ArrayDeque<Component>(parent.getSubComponents());
/** {@inheritDoc} */
public boolean hasNext() {
return !subComps.isEmpty();
/** {@inheritDoc} */
public Component next() {
if(subComps.isEmpty()) {
throw new NoSuchElementException();
// Retrieve and remove next sub-component.
Component res = subComps.poll();
// Add all sub-components of the retrieved sub-component to the queue.
return res;
/** {@inheritDoc} */
public void remove() {
throw new UnsupportedOperationException();
* Recursively searches for sub-components with names given in {@code compNames}.
* @param notFoundCompNames
* If not {@code null} than all names, for which no component has been found, will be
* added to it.
public static Map<String, Component> findSubComponentsRecursively(Component parent,
Collection<String> compNames, Collection<String> notFoundCompNames) {
Set<String> toBeFoundSet = new HashSet<String>(compNames);
Map<String, Component> foundMap = new HashMap<String, Component>();
Iterator<Component> subCompIterator = new SubComponentIterator(parent);
while(subCompIterator.hasNext()) {
Component comp =;
if(toBeFoundSet.contains(comp.getName())) {
foundMap.put(comp.getName(), comp);
// Break if all components found without iterating all sub-components.
if(toBeFoundSet.isEmpty()) {
* If some components were not found and the {@code notFoundCompNames} is not {@code null}
* then add all component names that could not be found to this collection.
if(!toBeFoundSet.isEmpty() && notFoundCompNames != null) {
return foundMap;
* Find output port by name.
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