/**
* Adds an <code>Application</code> or a <code>Library</code> to the <code>Project</code>.
*
* @param builder An instance of the <code>Application</code> or a <code>Library</code> class.
*/
public void addBuilder(Builder builder) {
String name = Integer.toString(builder.hashCode());
dependencies.put(name, builder);
if (!dependencies.containsVertex(name)) {
dependencies.addVertex(new Vertex<String, Builder>(name));
}
}
/**
* Instructs the <code>Project</code> that one <code>Builder</code> depends on the other. Both
* <code>Builder</code> instances must first be added to this <code>Project</code>.
*
* <p><code>builder1</code> depends on <code>builder2</code>.
*
* @param builder1 A <code>Builder</code>. This <code>Builder</code> depends on the other.
* @param builder2 A <code>Builder</code>.
*/
public void dependsOn(Builder builder1, Builder builder2) {
String head = Integer.toString(builder1.hashCode()),
tail = Integer.toString(builder2.hashCode());
if (!head.equals(tail)
&& dependencies.containsKey(head)
&& dependencies.containsKey(tail)
&& !dependencies.dependencyExists(head, tail)) {
dependencies.addDependency(head, tail);
}
}
/**
* Gets the build order for the <code>Project</code>. The build order is determined by the
* dependencies among <code>Builder</code> instances.
*
* @return <code>Iterator</code> build order; the elements are either instance of the <code>
* Application</code> class or the <code>Library</code> class.
*/
public Iterator<Builder> getBuildOrder() {
final List<Builder> buildOrder = new ArrayList<Builder>(dependencies.size());
Algorithms.topologicalSort(
dependencies,
new Visitor<Vertex<String, Builder>>() {
public void visit(Vertex<String, Builder> v) {
String name = v.getWeight();
buildOrder.add(dependencies.get(name));
}
});
return buildOrder.iterator();
}
/**
* Removes an <code>Application</code> or a <code>Library</code> from the <code>Project</code>.
*
* @param builder An instance of the <code>Application</code> or a <code>Library</code> class.
*/
public void removeBuilder(Builder builder) {
String name = Integer.toString(builder.hashCode());
dependencies.remove(name);
dependencies.removeVertex(name);
}