/**
* Implements a delete method
*
* @param leftId The id of the parent model
* @param rightId The id of the child model
* @return
*/
public Promise<Result> delete(final Long leftId, final Long rightId) {
return Promise.promise(
new Function0<Result>() {
public Result apply() {
L left = createLeftQuery(new ServiceParams()).where().eq("id", leftId).findUnique();
if (left == null) {
return CrudResults.notFoundError(leftClass, leftId);
}
List<? extends Model> junctions;
junctions = applyJunctionFiltering(leftId, rightId, null);
List<? extends Model> rights = getChildObjects(junctions, new ServiceParams());
List<? extends Model> toDelete = junctions;
if (rights.size() == 0) {
return CrudResults.notFoundError(getBaseModelClass(), rightId);
}
// Can we not just do, createJunctionQuery().eq(leftId).eq(rightId).findList()?
for (Model m : toDelete) {
m.delete();
}
return noContent();
}
});
}
/**
* Implements a bulk delete method
*
* @param leftId The id of the parent object
* @return
*/
@play.db.ebean.Transactional
public Promise<Result> deleteBulk(final Long leftId) {
return Promise.promise(
new Function0<Result>() {
public Result apply() {
L left = createLeftQuery(new ServiceParams()).where().eq("id", leftId).findUnique();
if (left == null) {
return CrudResults.notFoundError(leftClass, leftId);
}
List<Long> items = getItemsFromRequest();
if (items != null) {
// TODO: Ebean doesn't support deletes based off a where clause.
// We should switch this to raw sql to reduce it to 1 db call instead of 2. V
List<J> junks = applyJunctionFiltering(leftId, items, null);
if (junks.size() == items.size()) {
// modelMediator.beforeModelDelete(junks);
Ebean.delete(junks);
// modelMediator.afterModelDelete(junks);
return noContent();
} else {
return CrudResults.notFoundError(junctionClass, "");
}
} else {
return CrudResults.error("Array of objects with ids required");
}
}
});
}
/**
* Action Read a single model.
*
* @param leftId The id of the parent model.
* @param rightId The id of the child model.
* @param fields Fields to retrieve off the model. If not provided, retrieves all.
* @param fetches Get any 1to1 relationships off the model. By default, it returns only the id off
* the relationships.
* @return A promise containing the results
*/
public Promise<Result> read(
final Long leftId, final Long rightId, final String fields, final String fetches) {
return Promise.promise(
new Function0<Result>() {
public Result apply() {
L left = createLeftQuery(new ServiceParams()).where().eq("id", leftId).findUnique();
if (left == null) {
return CrudResults.notFoundError(leftClass, leftId);
}
ServiceParams rightParams = new ServiceParams(fields, fetches);
ServiceParams params = new ServiceParams(fields, fetches, rightFieldName + ".");
Query<J> query = createJunctionQuery(params);
handleFieldsAndFetches(query, junctionClass, params);
List<J> junctions = applyJunctionFiltering(leftId, rightId, query);
List<R> rights = getChildObjects(junctions, rightParams);
if (rights.size() == 0) {
return CrudResults.notFoundError(getBaseModelClass(), rightId);
}
List<? extends Model> returnList = rights;
return CrudResults.success(returnList.get(0));
}
});
}
public static Promise<Proposal> findKeynote() {
return Promise.promise(
new Function0<Proposal>() {
@Override
public Proposal apply() throws Throwable {
return find.where().eq("type", SessionType.Keynote).findUnique();
}
},
ctx)
.recover(
new Function<Throwable, Proposal>() {
@Override
public Proposal apply(Throwable throwable) throws Throwable {
Logger.error("Failed to fetch keynote information", throwable);
Proposal proposal = new Proposal();
proposal.title = "COMING SOON!";
proposal.content = "";
Speaker speaker = new Speaker();
speaker.name = "";
speaker.pictureUrl = "";
speaker.twitterId = "";
proposal.speaker = speaker;
return proposal;
}
},
ctx);
}
/**
* Action Query a list of models.
*
* @param leftId The id of the parent model
* @param offset An offset from the first item to start filtering from. Used for paging.
* @param count The total count to query. This is the length of items to query after the offset.
* Used for paging.
* @param orderBy Order the queried models in order by the given properties of the model.
* @param fields The fields, or properties, of the models to retrieve.
* @param fetches If the model has 1to1 relationships, use this to retrieve those relationships.
* By default, returns the id of each relationship.
* @param queryString Filter the models with a comma-delimited query string in the format of
* "property:value".
* @return A promise containing the results
*/
public Promise<Result> list(
final Long leftId,
final Integer offset,
final Integer count,
final String orderBy,
final String fields,
final String fetches,
final String queryString) {
return Promise.promise(
new Function0<Result>() {
public Result apply() {
L left = createLeftQuery(new ServiceParams()).where().eq("id", leftId).findUnique();
if (left == null) {
return CrudResults.notFoundError(leftClass, leftId);
}
ServiceParams rightParams =
new ServiceParams(offset, count, orderBy, fields, fetches, queryString);
ServiceParams params =
new ServiceParams(
offset, count, orderBy, fields, fetches, queryString, rightFieldName + ".");
Query<J> query = createJunctionQuery(params);
// turn query into like statements, with everything or'd
// ?q=name:%bri%,location:seattle%
if (queryString != null) {
handleSearchQuery(query, getJunctionClass(), params);
}
String appendedOrderBy = "";
// ?orderBy=name asc
if (orderBy != null && !orderBy.isEmpty()) {
appendedOrderBy = formatOrderBy(params.orderBy, junctionClass);
query.orderBy(appendedOrderBy);
}
handleFieldsAndFetches(query, junctionClass, params);
query.where().eq(getTableName(leftClass, leftFieldName) + "_id", leftId);
query.setFirstRow(offset);
Integer actualCount =
count == null
? Play.application().configuration().getInt("crud.defaultCount")
: count;
query.setMaxRows(actualCount == null ? 100 : count);
if (count == null) {
Logger.warn("No count specified on request: " + request().uri());
}
List<J> junctions = junctions = query.findList();
return CrudResults.successCount(
query.findRowCount(), junctions.size(), getChildObjects(junctions, rightParams));
}
});
}
/**
* Return the byte stream for the captcha image to be displayed.
*
* @param uuid the unique captcha id
*/
public Promise<Result> getCaptchaImage(final String uuid) {
return Promise.promise(
new Function0<Result>() {
@Override
public Result apply() throws Throwable {
String decodedUuid = new String(Base64.decodeBase64(uuid));
response().setContentType("image/png");
return ok(CaptchaManager.createCaptcha(decodedUuid));
}
});
}
public Promise<Void> asyncSave() {
return Promise.promise(
new Function0<Void>() {
@Override
public Void apply() throws Throwable {
save();
return null;
}
},
ctx);
}
public static Promise<Proposal> selectRandomTalk() {
return Promise.promise(
new Function0<Proposal>() {
@Override
public Proposal apply() throws Throwable {
// randomly select one if the first
Long randomId = (long) (1 + Math.random() * (5 - 1));
return Proposal.find.byId(randomId);
}
},
ctx);
}
// #async
public static Promise<SimpleResult> index() {
Promise<Integer> promiseOfInt =
Promise.promise(
new Function0<Integer>() {
public Integer apply() {
return intensiveComputation();
}
});
return promiseOfInt.map(
new Function<Integer, SimpleResult>() {
public SimpleResult apply(Integer i) {
return ok("Got result: " + i);
}
});
}
/**
* Gets a list of associations for the base model object
*
* @return
*/
@Override
public Promise<Result> associations(Long leftId) {
return Promise.promise(
new Function0<Result>() {
public Result apply() {
List<Class<? extends Model>> associations = new ArrayList<Class<? extends Model>>();
associations.addAll(AssociationFinder.findClassAssociations(junctionClass));
List<String> simpleAssociations = new ArrayList<String>();
for (Class<? extends Model> assoc : associations) {
simpleAssociations.add(assoc.getSimpleName());
}
return CrudResults.successCount(
simpleAssociations.size(), simpleAssociations.size(), simpleAssociations);
}
});
}
/**
* Implements a update method
*
* @param leftId The id of the parent model
* @param rightId The id of the child model
* @return
*/
@BodyParser.Of(BodyParser.Json.class)
public Promise<Result> update(final Long leftId, final Long rightId) {
return Promise.promise(
new Function0<Result>() {
public Result apply() {
J model =
createJunctionQuery(new ServiceParams())
.where()
.eq(getTableName(rightClass, rightFieldName) + "_id", rightId)
.eq(getTableName(leftClass, leftFieldName) + "_id", leftId)
.findUnique();
// You can only update rights that we have a junction for
if (model == null) {
return CrudResults.notFoundError(junctionClass, "");
}
return ManyToManyCrudController.super.update(rightId).get(5000);
}
});
}
/**
* Create a new entity with the json body of the request. If the body is an array, it will bulk
* create.
*
* @param leftId The id of the parent object
* @return Result object with the created entities
*/
@BodyParser.Of(BodyParser.Json.class)
public Promise<Result> create(final Long leftId) {
return Promise.promise(
new Function0<Result>() {
public Result apply() {
L left = createLeftQuery(new ServiceParams()).where().eq("id", leftId).findUnique();
if (left == null) {
return CrudResults.notFoundError(leftClass, leftId);
}
List<R> rightList = new ArrayList<R>();
List<J> junctionList = new ArrayList<J>();
// if id is sent get existing model, otherwise create it
JsonNode reqBody = request().body().asJson();
JsonNode array;
// convert the request into an array if it's not. Reduces logic.
if (!reqBody.isArray()) {
ArrayNode a = new ArrayNode(JsonNodeFactory.instance);
a.add(reqBody);
array = a;
} else {
array = reqBody;
}
for (final JsonNode node : array) {
JsonNode rightNode = node;
R right;
if (rightNode != null) {
JsonNode idNode = rightNode.get("id");
if (idNode != null && !idNode.asText().equals("null")) {
Long rightId = idNode.asLong(); // TODO: Slow
right = createQuery(new ServiceParams()).where().eq("id", rightId).findUnique();
if (right != null) {
rightList.add(right);
} else {
return CrudResults.notFoundError(getBaseModelClass(), rightId);
}
} else {
right = Json.fromJson(rightNode, getBaseModelClass());
ResultOrValue<R> rov = isModelValid(right);
if (rov.result != null) {
return rov.result;
} else {
rightList.add(right);
}
}
} else {
return CrudResults.error("No right object found on junction.");
}
}
for (R right : rightList) {
// save junction - this can be cleaned up
J junction = null;
try {
Constructor<J> ctor = junctionClass.getConstructor();
junction = ctor.newInstance();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
setSubObject(junction, left, leftFieldName);
setSubObject(junction, right, rightFieldName);
junctionList.add(junction);
}
Ebean.save(rightList);
Ebean.save(junctionList);
// return an array if the request was originally an array
List<? extends Model> returnList = rightList;
if (reqBody.isArray()) {
return CrudResults.successCreate(returnList);
} else {
return CrudResults.successCreate(returnList.get(0));
}
}
});
}
