firebase-cpp-sdk/database/src/android/query_android.cc at libcpp_fix · firebase/firebase-cpp-sdk · GitHub

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// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#include "database/src/android/query_android.h"

#include <jni.h>

#include "app/src/util_android.h"

#include "database/src/android/database_android.h"

#include "database/src/android/database_reference_android.h"

#include "database/src/common/query.h"

#include "database/src/common/query_spec.h"

namespace firebase {

namespace database {

namespace internal {

// clang-format off

#define QUERY_METHODS(X) \

X(AddValueEventListener, "addValueEventListener", \

"(Lcom/google/firebase/database/ValueEventListener;)" \

"Lcom/google/firebase/database/ValueEventListener;"), \

X(AddChildEventListener, "addChildEventListener", \

"(Lcom/google/firebase/database/ChildEventListener;)" \

"Lcom/google/firebase/database/ChildEventListener;"), \

X(AddListenerForSingleValueEvent, "addListenerForSingleValueEvent", \

"(Lcom/google/firebase/database/ValueEventListener;)V"), \

X(RemoveValueEventListener, "removeEventListener", \

"(Lcom/google/firebase/database/ValueEventListener;)V"), \

X(RemoveChildEventListener, "removeEventListener", \

"(Lcom/google/firebase/database/ChildEventListener;)V"), \

X(KeepSynced, "keepSynced", "(Z)V"), \

X(StartAtString, "startAt", \

"(Ljava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(StartAtDouble, "startAt", "(D)Lcom/google/firebase/database/Query;"), \

X(StartAtBool, "startAt", "(Z)Lcom/google/firebase/database/Query;"), \

X(StartAtStringString, "startAt", \

"(Ljava/lang/String;Ljava/lang/String;)" \

"Lcom/google/firebase/database/Query;"), \

X(StartAtDoubleString, "startAt", \

"(DLjava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(StartAtBoolString, "startAt", \

"(ZLjava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(EndAtString, "endAt", \

"(Ljava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(EndAtDouble, "endAt", "(D)Lcom/google/firebase/database/Query;"), \

X(EndAtBool, "endAt", "(Z)Lcom/google/firebase/database/Query;"), \

X(EndAtStringString, "endAt", \

"(Ljava/lang/String;Ljava/lang/String;)" \

"Lcom/google/firebase/database/Query;"), \

X(EndAtDoubleString, "endAt", \

"(DLjava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(EndAtBoolString, "endAt", \

"(ZLjava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(EqualToString, "equalTo", \

"(Ljava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(EqualToDouble, "equalTo", "(D)Lcom/google/firebase/database/Query;"), \

X(EqualToBool, "equalTo", "(Z)Lcom/google/firebase/database/Query;"), \

X(EqualToStringString, "equalTo", \

"(Ljava/lang/String;Ljava/lang/String;)" \

"Lcom/google/firebase/database/Query;"), \

X(EqualToDoubleString, "equalTo", \

"(DLjava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(EqualToBoolString, "equalTo", \

"(ZLjava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(LimitToFirst, "limitToFirst", \

"(I)Lcom/google/firebase/database/Query;"), \

X(LimitToLast, "limitToLast", \

"(I)Lcom/google/firebase/database/Query;"), \

X(OrderByChild, "orderByChild", \

"(Ljava/lang/String;)Lcom/google/firebase/database/Query;"), \

X(OrderByPriority, "orderByPriority", \

"()Lcom/google/firebase/database/Query;"), \

X(OrderByKey, "orderByKey", "()Lcom/google/firebase/database/Query;"), \

X(OrderByValue, "orderByValue", \

"()Lcom/google/firebase/database/Query;"), \

X(GetRef, "getRef", \

"()Lcom/google/firebase/database/DatabaseReference;")

// clang-format on

METHOD_LOOKUP_DECLARATION(query, QUERY_METHODS)

METHOD_LOOKUP_DEFINITION(query,

PROGUARD_KEEP_CLASS

"com/google/firebase/database/Query",

QUERY_METHODS)

QueryInternal::QueryInternal(DatabaseInternal* db, jobject obj) : db_(db) {

db_->future_manager().AllocFutureApi(&future_api_id_, kQueryFnCount);

obj_ = db_->GetApp()->GetJNIEnv()->NewGlobalRef(obj);

}

QueryInternal::QueryInternal(DatabaseInternal* db, jobject obj,

const internal::QuerySpec& query_spec)

: db_(db), query_spec_(query_spec) {

db_->future_manager().AllocFutureApi(&future_api_id_, kQueryFnCount);

obj_ = db_->GetApp()->GetJNIEnv()->NewGlobalRef(obj);

}

QueryInternal::QueryInternal(const QueryInternal& src)

: db_(src.db_), query_spec_(src.query_spec_) {

db_->future_manager().AllocFutureApi(&future_api_id_, kQueryFnCount);

obj_ = db_->GetApp()->GetJNIEnv()->NewGlobalRef(src.obj_);

}

QueryInternal& QueryInternal::operator=(const QueryInternal& src) {

obj_ = db_->GetApp()->GetJNIEnv()->NewGlobalRef(src.obj_);

query_spec_ = src.query_spec_;

return *this;

}

#if defined(FIREBASE_USE_MOVE_OPERATORS) || defined(DOXYGEN)

QueryInternal::QueryInternal(QueryInternal&& src) : db_(src.db_) {

obj_ = src.obj_;

src.obj_ = nullptr;

db_->future_manager().MoveFutureApi(&src.future_api_id_, &future_api_id_);

query_spec_ = src.query_spec_;

}

QueryInternal& QueryInternal::operator=(QueryInternal&& src) {

obj_ = src.obj_;

src.obj_ = nullptr;

db_->future_manager().MoveFutureApi(&src.future_api_id_, &future_api_id_);

query_spec_ = src.query_spec_;

return *this;

}

#endif // defined(FIREBASE_USE_MOVE_OPERATORS) || defined(DOXYGEN)

QueryInternal::~QueryInternal() {

if (obj_ != nullptr) {

db_->GetApp()->GetJNIEnv()->DeleteGlobalRef(obj_);

obj_ = nullptr;

}

db_->future_manager().ReleaseFutureApi(&future_api_id_);

}

bool QueryInternal::Initialize(App* app) {

JNIEnv* env = app->GetJNIEnv();

jobject activity = app->activity();

return query::CacheMethodIds(env, activity);

}

void QueryInternal::Terminate(App* app) {

JNIEnv* env = app->GetJNIEnv();

query::ReleaseClass(env);

util::CheckAndClearJniExceptions(env);

}

DatabaseReferenceInternal* QueryInternal::GetReference() {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject database_reference_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kGetRef));

if (util::LogException(env, kLogLevelWarning,

"Query::GetReference() failed")) {

return nullptr;

}

DatabaseReferenceInternal* internal =

new DatabaseReferenceInternal(db_, database_reference_obj);

env->DeleteLocalRef(database_reference_obj);

return internal;

}

void QueryInternal::SetKeepSynchronized(bool keep_sync) {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

env->CallVoidMethod(obj_, query::GetMethodId(query::kKeepSynced), keep_sync);

util::CheckAndClearJniExceptions(env);

}

QueryInternal* QueryInternal::OrderByChild(const char* path) {

internal::QuerySpec spec = query_spec_;

spec.params.order_by = internal::QueryParams::kOrderByChild;

spec.params.order_by_child = path;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject path_string = env->NewStringUTF(path);

jobject query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kOrderByChild), path_string);

env->DeleteLocalRef(path_string);

if (util::LogException(env, kLogLevelError, "Query::OrderByChild (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::OrderByKey() {

internal::QuerySpec spec = query_spec_;

spec.params.order_by = internal::QueryParams::kOrderByKey;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kOrderByKey));

if (util::LogException(env, kLogLevelError, "Query::OrderByKey (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::OrderByPriority() {

internal::QuerySpec spec = query_spec_;

spec.params.order_by = internal::QueryParams::kOrderByPriority;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kOrderByPriority));

if (util::LogException(env, kLogLevelError,

"Query::OrderByPriority (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::OrderByValue() {

internal::QuerySpec spec = query_spec_;

spec.params.order_by = internal::QueryParams::kOrderByValue;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kOrderByValue));

if (util::LogException(env, kLogLevelError, "Query::OrderByValue (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::LimitToFirst(size_t limit) {

internal::QuerySpec spec = query_spec_;

spec.params.limit_first = limit;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kLimitToFirst), limit);

if (util::LogException(env, kLogLevelError, "Query::LimitToFirst (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::LimitToLast(size_t limit) {

internal::QuerySpec spec = query_spec_;

spec.params.limit_last = limit;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kLimitToLast), limit);

if (util::LogException(env, kLogLevelError, "Query::LimitToLast (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::StartAt(Variant value) {

Logger* logger = db_->logger();

if (!value.is_numeric() && !value.is_string() && !value.is_bool()) {

logger->LogWarning(

"Query::StartAt(): Only strings, numbers, and boolean values are "

"allowed. (URL = %s)",

query_spec_.path.c_str());

return nullptr;

}

internal::QuerySpec spec = query_spec_;

spec.params.start_at_value = value;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj = nullptr;

if (value.is_bool()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kStartAtBool), value.bool_value());

} else if (value.is_numeric()) {

query_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kStartAtDouble),

value.AsDouble().double_value());

} else if (value.is_string()) {

jstring value_string = env->NewStringUTF(value.string_value());

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kStartAtString), value_string);

env->DeleteLocalRef(value_string);

}

if (util::LogException(env, kLogLevelError, "Query::StartAt (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::StartAt(Variant value, const char* key) {

Logger* logger = db_->logger();

if (!value.is_numeric() && !value.is_string() && !value.is_bool()) {

logger->LogWarning(

"Query::StartAt: Only strings, numbers, and boolean values are "

"allowed. (URL = %s)",

query_spec_.path.c_str());

return nullptr;

}

FIREBASE_ASSERT_RETURN(nullptr, key != nullptr);

internal::QuerySpec spec = query_spec_;

spec.params.start_at_value = value;

spec.params.start_at_child_key = key;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jstring key_string = env->NewStringUTF(key);

jobject query_obj = nullptr;

if (value.is_bool()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kStartAtBoolString), value.bool_value(),

key_string);

} else if (value.is_numeric()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kStartAtDoubleString),

value.AsDouble().double_value(), key_string);

} else if (value.is_string()) {

jstring value_string = env->NewStringUTF(value.string_value());

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kStartAtStringString), value_string,

key_string);

env->DeleteLocalRef(value_string);

}

env->DeleteLocalRef(key_string);

if (util::LogException(env, kLogLevelError, "Query::StartAt (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::EndAt(Variant value) {

Logger* logger = db_->logger();

if (!value.is_numeric() && !value.is_string() && !value.is_bool()) {

logger->LogWarning(

"Query::EndAt: Only strings, numbers, and boolean values are "

"allowed. (URL = %s)",

query_spec_.path.c_str());

return nullptr;

}

internal::QuerySpec spec = query_spec_;

spec.params.end_at_value = value;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj = nullptr;

if (value.is_bool()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEndAtBool), value.bool_value());

} else if (value.is_numeric()) {

query_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kEndAtDouble),

value.AsDouble().double_value());

} else if (value.is_string()) {

jstring value_string = env->NewStringUTF(value.string_value());

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEndAtString), value_string);

env->DeleteLocalRef(value_string);

}

if (util::LogException(env, kLogLevelError, "Query::EndAt (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::EndAt(Variant value, const char* key) {

Logger* logger = db_->logger();

if (!value.is_numeric() && !value.is_string() && !value.is_bool()) {

logger->LogWarning(

"Query::EndAt: Only strings, numbers, and boolean values are "

"allowed. (URL = %s)",

query_spec_.path.c_str());

return nullptr;

}

FIREBASE_ASSERT_RETURN(nullptr, key != nullptr);

internal::QuerySpec spec = query_spec_;

spec.params.end_at_value = value;

spec.params.end_at_child_key = key;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jstring key_string = env->NewStringUTF(key);

jobject query_obj = nullptr;

if (value.is_bool()) {

query_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kEndAtBoolString),

value.bool_value(), key_string);

} else if (value.is_numeric()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEndAtDoubleString),

value.AsDouble().double_value(), key_string);

} else if (value.is_string()) {

jstring value_string = env->NewStringUTF(value.string_value());

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEndAtStringString), value_string,

key_string);

env->DeleteLocalRef(value_string);

}

env->DeleteLocalRef(key_string);

if (util::LogException(env, kLogLevelError, "Query::EndAt (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::EqualTo(Variant value) {

Logger* logger = db_->logger();

if (!value.is_numeric() && !value.is_string() && !value.is_bool()) {

logger->LogWarning(

"Query::EqualTo: Only strings, numbers, and boolean values are "

"allowed. (URL = %s)",

query_spec_.path.c_str());

return nullptr;

}

internal::QuerySpec spec = query_spec_;

spec.params.equal_to_value = value;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject query_obj = nullptr;

if (value.is_bool()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEqualToBool), value.bool_value());

} else if (value.is_numeric()) {

query_obj =

env->CallObjectMethod(obj_, query::GetMethodId(query::kEqualToDouble),

value.AsDouble().double_value());

} else if (value.is_string()) {

jstring value_string = env->NewStringUTF(value.string_value());

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEqualToString), value_string);

env->DeleteLocalRef(value_string);

}

if (util::LogException(env, kLogLevelError, "Query::EqualTo (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

QueryInternal* QueryInternal::EqualTo(Variant value, const char* key) {

Logger* logger = db_->logger();

if (!value.is_numeric() && !value.is_string() && !value.is_bool()) {

logger->LogWarning(

"Query::EqualTo: Only strings, numbers, and boolean values are "

"allowed. (URL = %s)",

query_spec_.path.c_str());

return nullptr;

}

FIREBASE_ASSERT_RETURN(nullptr, key != nullptr);

internal::QuerySpec spec = query_spec_;

spec.params.equal_to_value = value;

spec.params.equal_to_child_key = key;

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jstring key_string = env->NewStringUTF(key);

jobject query_obj = nullptr;

if (value.is_bool()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEqualToBoolString), value.bool_value(),

key_string);

} else if (value.is_numeric()) {

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEqualToDoubleString),

value.AsDouble().double_value(), key_string);

} else if (value.is_string()) {

jstring value_string = env->NewStringUTF(value.string_value());

query_obj = env->CallObjectMethod(

obj_, query::GetMethodId(query::kEqualToStringString), value_string,

key_string);

env->DeleteLocalRef(value_string);

}

env->DeleteLocalRef(key_string);

if (util::LogException(env, kLogLevelError, "Query::EqualTo (URL = %s)",

query_spec_.path.c_str())) {

return nullptr;

}

QueryInternal* internal = new QueryInternal(db_, query_obj, spec);

env->DeleteLocalRef(query_obj);

return internal;

}

SingleValueListener::SingleValueListener(DatabaseInternal* db,

ReferenceCountedFutureImpl* future,

SafeFutureHandle<DataSnapshot> handle)

: db_(db), future_(future), handle_(handle), java_listener_(nullptr) {}

SingleValueListener::~SingleValueListener() {

if (java_listener_ != nullptr) {

db_->RemoveSingleValueListener(java_listener_);

}

void SingleValueListener::SetJavaListener(jobject obj) {

java_listener_ = obj;

db_->AddSingleValueListener(java_listener_);

}

void SingleValueListener::OnValueChanged(const DataSnapshot& snapshot) {

db_->ClearJavaEventListener(java_listener_);

db_->GetApp()->GetJNIEnv()->DeleteGlobalRef(java_listener_);

future_->Complete<DataSnapshot>(

handle_, kErrorNone, "",

[&snapshot](DataSnapshot* data) { *data = snapshot; });

delete this;

}

void SingleValueListener::OnCancelled(const Error& error_code,

const char* error_message) {

db_->ClearJavaEventListener(java_listener_);

db_->GetApp()->GetJNIEnv()->DeleteGlobalRef(java_listener_);

future_->Complete(handle_, error_code, error_message);

delete this;

}

Future<DataSnapshot> QueryInternal::GetValue() {

// Register a one-time ValueEventListener with the query.

JNIEnv* env = db_->GetApp()->GetJNIEnv();

SafeFutureHandle<DataSnapshot> handle =

query_future()->SafeAlloc<DataSnapshot>(kQueryFnGetValue,

DataSnapshot(nullptr));

SingleValueListener* single_listener =

new SingleValueListener(db_, query_future(), handle);

// The SingleValueListener newed above is deleted in one of several places:

// - In the LogException block below, if an exception was thrown adding the

// listener.

// - In the listener's OnValueChanged and OnCancelled callbacks, which are

// guaranteed to be called once as long as the database is still valid.

// - In DatabaseInternal's destructor, if any SingleValueListeners were

// not deleted (due to shutdown happening while a value is pending).

jobject listener = db_->CreateJavaEventListener(single_listener);

single_listener->SetJavaListener(listener);

env->CallVoidMethod(

obj_, query::GetMethodId(query::kAddListenerForSingleValueEvent),

listener);

if (util::LogException(env, kLogLevelError,

"Query::GetValue (URL = %s) failed")) {

// The query failed, so it needs to clean itself up.

db_->ClearJavaEventListener(listener);

env->DeleteGlobalRef(listener);

delete single_listener;

query_future()->Complete(handle, kErrorUnknownError,

"addListenerForSingleValueEvent failed");

}

return MakeFuture(query_future(), handle);

}

Future<DataSnapshot> QueryInternal::GetValueLastResult() {

return static_cast<const Future<DataSnapshot>&>(

query_future()->LastResult(kQueryFnGetValue));

}

void QueryInternal::AddValueListener(ValueListener* value_listener) {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject listener =

db_->RegisterValueEventListener(query_spec_, value_listener);

if (listener != nullptr) {

// Register a Java listener.

jobject listener_ref = env->CallObjectMethod(

obj_, query::GetMethodId(query::kAddValueEventListener), listener);

env->DeleteLocalRef(listener_ref);

util::LogException(env, kLogLevelError,

"Query::AddValueListener (URL = %s) failed",

query_spec_.path.c_str());

} else {

Logger* logger = db_->logger();

logger->LogWarning(

"Query::AddValueListener (URL = %s): You may not register the same "

"ValueListener more than once on the same Query.",

query_spec_.path.c_str());

}

void QueryInternal::RemoveValueListener(ValueListener* value_listener) {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject listener =

db_->UnregisterValueEventListener(query_spec_, value_listener);

if (listener != nullptr) {

// Unregister it. If this is the last one, it will be deleted once this

// local ref is deleted.

env->CallVoidMethod(

obj_, query::GetMethodId(query::kRemoveValueEventListener), listener);

util::LogException(env, kLogLevelError,

"Query::RemoveValueListener (URL = %s) failed",

query_spec_.path.c_str());

env->DeleteLocalRef(listener);

}

void QueryInternal::RemoveAllValueListeners() {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

std::vector<jobject> listeners =

db_->UnregisterAllValueEventListeners(query_spec_);

for (int i = 0; i < listeners.size(); i++) {

env->CallVoidMethod(obj_,

query::GetMethodId(query::kRemoveValueEventListener),

listeners[i]);

env->DeleteLocalRef(listeners[i]);

}

void QueryInternal::AddChildListener(ChildListener* child_listener) {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject listener =

db_->RegisterChildEventListener(query_spec_, child_listener);

if (listener != nullptr) {

// Register a Java listener.

jobject listener_ref = env->CallObjectMethod(

obj_, query::GetMethodId(query::kAddChildEventListener), listener);

env->DeleteLocalRef(listener_ref);

util::LogException(env, kLogLevelError,

"Query::AddChildListener (URL = %s) failed",

query_spec_.path.c_str());

} else {

Logger* logger = db_->logger();

logger->LogWarning(

"Query::AddChildListener (URL = %s): You may not register the same "

"ChildListener more than once on the same Query.",

query_spec_.path.c_str());

}

void QueryInternal::RemoveChildListener(ChildListener* child_listener) {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

jobject listener =

db_->UnregisterChildEventListener(query_spec_, child_listener);

if (listener != nullptr) {

// Unregister it. If this is the last one, it will be deleted once this

// local ref is deleted.

env->CallVoidMethod(

obj_, query::GetMethodId(query::kRemoveChildEventListener), listener);

util::LogException(env, kLogLevelError,

"Query::RemoveChildListener (URL = %s) failed",

query_spec_.path.c_str());

env->DeleteLocalRef(listener);

}

ReferenceCountedFutureImpl* QueryInternal::query_future() {

return db_->future_manager().GetFutureApi(&future_api_id_);

}

void QueryInternal::RemoveAllChildListeners() {

JNIEnv* env = db_->GetApp()->GetJNIEnv();

std::vector<jobject> listeners =

db_->UnregisterAllChildEventListeners(query_spec_);

for (int i = 0; i < listeners.size(); i++) {

env->CallVoidMethod(obj_,

query::GetMethodId(query::kRemoveChildEventListener),

listeners[i]);

env->DeleteLocalRef(listeners[i]);

}

} // namespace internal

} // namespace database

} // namespace firebase

firebase-cpp-sdk/database/src/android/query_android.cc at libcpp_fix · firebase/firebase-cpp-sdk · GitHub

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