public final ConceptDescriptor concept;

private final List<Child> children = new ArrayList<Child>();

private Node parent;

public Node(ConceptDescriptor concept) {

this.concept = concept;

}

public Node add(PropertyDescriptor pd, Data data) {

this.children.add(new Child(pd, data));

return this;

}

public Node add(String propName, Data data) {

this.children.add(new Child(propName, data));

return this;

}

public List<Node> childNodes() {

return children.stream().filter(c -> c.data() instanceof Node).map(c -> ((Node) c.data())).toList();

}

public void resolve(LanguageDescriptor lang, Node parent) {

this.parent = parent;

this.children.stream().forEach(c -> c.resolve(this));

this.childNodes().stream().forEach(c -> c.resolve(lang, this));

}

public String dump(String indent) {

StringBuilder sb = new StringBuilder();

sb.append(this.concept.name + " {\n");

for (Child c : children.stream().filter(c -> c.data() instanceof Value).toList()) {

sb.append(indent + " " + c.role().name + ": ");

sb.append(((Value) c.data()).data + "\n");

}

for (Child c : children.stream().filter(c -> c.data() instanceof Node).toList()) {

sb.append(indent + " " + c.role().name + ": ");

sb.append(((Node) c.data()).dump(indent+" "));

}

sb.append(indent + "}\n");

return sb.toString();

}

public Node parent() {

return parent;

}

public void replaceChild(Node matched, Node replacement) {

for (Child c: children) {

if (c.data() instanceof Node && c.data() == matched) {

c.setData(replacement);

}

}

replacement.resolve(this.concept.language(),this);

}