/**
* If a {@link Model} is part of a composition, and is the weak part (is part of other models),
* this method returns all the fields containing connection of {@link ConnectionType.BelongsTo}
* type. It's useful in the <code>INSERT</code> of the record, for preventing foreign key
* costraint inconsistency.
*
* @param model The given {@link Model}.
* @return A list of fields that represent the Models that owns <code>model</code>.
*/
protected List<String> belongsTo(Class model) {
if (belongsToFields.containsKey(model)) return belongsToFields.get(model);
List<Class> sC = getSupers(model);
List<String> ownerFields = new ArrayList<String>();
Method[] getters = CommonStatic.getDeclaredGetters(model);
for (Method g : getters)
/* has a belongs to annotation */
if (g.isAnnotationPresent(Connection.class)
&& g.getAnnotation(Connection.class).type().equals(ConnectionType.BelongsTo)) {
ownerFields.add(fieldName(g));
}
for (Class s : sC) ownerFields.addAll(belongsTo(s));
belongsToFields.put(model, ownerFields);
return ownerFields;
}
/**
* Returns all the classes related to <code>type</code> by a {@link Connection}
*
* @param type The given {@link Model} interface.
* @return A list that contains all the models in a relationship with <code>type</code> interface.
*/
protected List<Class> getAllReleatedClasses(Class type) {
if (relatedClasses.containsKey(type)) return relatedClasses.get(type);
List<Class> related = new ArrayList<Class>();
Method[] getters = CommonStatic.getDeclaredGetters(type);
for (Method g : getters)
if (g.isAnnotationPresent(Connection.class)) {
Class t = g.getReturnType();
t = t.isArray() ? t.getComponentType() : t;
if (!related.contains(t)) related.add(t);
}
relatedClasses.put(type, related);
return related;
}