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/**
* Copyright (c) 2017 CEA LIST.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Maged Elaasar - Initial API and implementation
*
*
*/
package org.eclipse.papyrus.infra.core.architecture.merged;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import org.eclipse.papyrus.infra.core.architecture.ADElement;
import org.eclipse.papyrus.infra.core.architecture.ArchitectureContext;
/**
* An element that represents a merged collection of {@link org.eclipse.papyrus.infra.core.
* architecture.ADElement}s that are instances of the same EClass. This allows the definition
* of architecture elements to be split across several architectural models (*.architecture).
*
* All merged elements is assumed to have the same name and qualified name values. However, only
* one of those elements (the main merge increment) has values for the single-valued properties.
* On the other hand, all multi-valued properties of the elements are merged.
*
* @see org.eclipse.papyrus.infra.core.architecture.ADElement
* @since 1.0
*/
public class MergedADElement {
/**
* The merged parent of this element
*/
protected MergedADElement parent;
/**
* the architecture elements that represent merge increments of this element
*/
protected Set<ADElement> elements;
/**
* Create a new '<em><b>Merged AD Element</b></em>'.
*
* @param parent the merged parent of this element
*/
public MergedADElement(MergedADElement parent) {
this.parent = parent;
this.elements = new LinkedHashSet<ADElement>();
}
/**
* Get the element's parent
*
* @return the parent element
*/
public MergedADElement getParent() {
return parent;
}
/**
* Gets the context's id
*
* @return an id
*/
public String getId() {
for (ADElement element : elements) {
if (element.getId() != null)
return element.getId();
}
return null;
}
/**
* Get the element's name
*
* @return a name
*/
public String getName() {
for (ADElement element : elements) {
if (element.getName() != null)
return element.getName();
}
return null;
}
/**
* Get the element's qualified name
*
* @return a qualified name
*/
public String getQualifiedName() {
for (ADElement element : elements) {
if (element.getQualifiedName() != null)
return element.getQualifiedName();
}
return null;
}
/**
* Get the element's description
*
* @return a description
*/
public String getDescription() {
for (ADElement element : elements) {
if (element.getDescription() != null)
return element.getDescription();
}
return null;
}
/**
* Gets the context's icon path
*
* @return an icon path
*/
public String getIcon() {
Object obj = getImageObject();
if (obj instanceof ADElement)
return ((ADElement)obj).getIcon();
return null;
}
/**
* Get a merge increment whose image represents that of the merged element
*
* By default, any one of the merge increments will be returned. Subclasses may override.
*
* @return a merge increment
*/
public Object getImageObject() {
for (ADElement element : elements) {
if (element.getIcon() != null)
return element;
}
return null;
}
@Override
public int hashCode() {
int hash = 0;
for (ADElement element : elements) {
hash += element.hashCode();
}
return hash;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof MergedADElement))
return false;
MergedADElement other = (MergedADElement) obj;
if (other.parent != this.parent)
return false;
Set<ADElement> copy = new HashSet<ADElement>(this.elements);
copy.retainAll(other.elements);
return copy.size() == this.elements.size();
}
@Override
public String toString() {
Iterator<ADElement> i = elements.iterator();
if (i.hasNext())
return i.next().toString();
return super.toString();
}
/*
* Adds the given element to the collection of merged elements
*/
void merge(ADElement element) {
elements.add(element);
}
}
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