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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/history/android/sqlite_cursor.h"
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/bind.h"
#include "base/logging.h"
#include "chrome/browser/favicon/favicon_service.h"
#include "chrome/browser/history/android/android_history_types.h"
#include "content/public/browser/browser_thread.h"
#include "jni/SQLiteCursor_jni.h"
#include "sql/statement.h"
using base::android::ConvertUTF8ToJavaString;
using base::android::ScopedJavaLocalRef;
using content::BrowserThread;
namespace {
SQLiteCursor::JavaColumnType ToJavaColumnType(sql::ColType type) {
switch (type) {
case sql::COLUMN_TYPE_INTEGER:
return SQLiteCursor::NUMERIC;
case sql::COLUMN_TYPE_FLOAT:
return SQLiteCursor::DOUBLE;
case sql::COLUMN_TYPE_TEXT:
return SQLiteCursor::LONG_VAR_CHAR;
case sql::COLUMN_TYPE_BLOB:
return SQLiteCursor::BLOB;
case sql::COLUMN_TYPE_NULL:
return SQLiteCursor::NULL_TYPE;
default:
NOTREACHED();
}
return SQLiteCursor::NULL_TYPE;
}
} // namespace.
SQLiteCursor::TestObserver::TestObserver() {
}
SQLiteCursor::TestObserver::~TestObserver() {
}
ScopedJavaLocalRef<jobject> SQLiteCursor::NewJavaSqliteCursor(
JNIEnv* env,
const std::vector<std::string>& column_names,
history::AndroidStatement* statement,
AndroidHistoryProviderService* service,
FaviconService* favicon_service) {
SQLiteCursor* cursor = new SQLiteCursor(column_names, statement, service,
favicon_service);
return Java_SQLiteCursor_create(env, reinterpret_cast<intptr_t>(cursor));
}
bool SQLiteCursor::RegisterSqliteCursor(JNIEnv* env) {
return RegisterNativesImpl(env);
}
jint SQLiteCursor::GetCount(JNIEnv* env, jobject obj) {
// Moves to maxium possible position so we will reach the last row, then finds
// out the total number of rows.
int current_position = position_;
int count = MoveTo(env, obj, std::numeric_limits<int>::max() - 1) + 1;
// Moves back to the previous position.
MoveTo(env, obj, current_position);
return count;
}
ScopedJavaLocalRef<jobjectArray> SQLiteCursor::GetColumnNames(JNIEnv* env,
jobject obj) {
return base::android::ToJavaArrayOfStrings(env, column_names_);
}
ScopedJavaLocalRef<jstring> SQLiteCursor::GetString(JNIEnv* env,
jobject obj,
jint column) {
base::string16 value = statement_->statement()->ColumnString16(column);
return ScopedJavaLocalRef<jstring>(env,
env->NewString(value.data(), value.size()));
}
jlong SQLiteCursor::GetLong(JNIEnv* env, jobject obj, jint column) {
return statement_->statement()->ColumnInt64(column);
}
jint SQLiteCursor::GetInt(JNIEnv* env, jobject obj, jint column) {
return statement_->statement()->ColumnInt(column);
}
jdouble SQLiteCursor::GetDouble(JNIEnv* env, jobject obj, jint column) {
return statement_->statement()->ColumnDouble(column);
}
ScopedJavaLocalRef<jbyteArray> SQLiteCursor::GetBlob(JNIEnv* env,
jobject obj,
jint column) {
std::vector<unsigned char> blob;
// Assume the client will only get favicon using GetBlob.
if (statement_->favicon_index() == column) {
if (!GetFavicon(statement_->statement()->ColumnInt(column), &blob))
return ScopedJavaLocalRef<jbyteArray>();
} else {
statement_->statement()->ColumnBlobAsVector(column, &blob);
}
return base::android::ToJavaByteArray(env, &blob[0], blob.size());
}
jboolean SQLiteCursor::IsNull(JNIEnv* env, jobject obj, jint column) {
return NULL_TYPE == GetColumnTypeInternal(column) ? JNI_TRUE : JNI_FALSE;
}
jint SQLiteCursor::MoveTo(JNIEnv* env, jobject obj, jint pos) {
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(&SQLiteCursor::RunMoveStatementOnUIThread,
base::Unretained(this), pos));
if (test_observer_)
test_observer_->OnPostMoveToTask();
event_.Wait();
return position_;
}
jint SQLiteCursor::GetColumnType(JNIEnv* env, jobject obj, jint column) {
return GetColumnTypeInternal(column);
}
void SQLiteCursor::Destroy(JNIEnv* env, jobject obj) {
// We do our best to cleanup when Destroy() is called from Java's finalize()
// where the UI message loop might stop running or in the process of shutting
// down, as the whole process will be destroyed soon, it's fine to leave some
// objects out there.
if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
DestroyOnUIThread();
} else if (!BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(&SQLiteCursor::DestroyOnUIThread,
base::Unretained(this)))) {
delete this;
}
}
SQLiteCursor::SQLiteCursor(const std::vector<std::string>& column_names,
history::AndroidStatement* statement,
AndroidHistoryProviderService* service,
FaviconService* favicon_service)
: position_(-1),
event_(false, false),
statement_(statement),
column_names_(column_names),
service_(service),
favicon_service_(favicon_service),
count_(-1),
test_observer_(NULL) {
}
SQLiteCursor::~SQLiteCursor() {
}
void SQLiteCursor::DestroyOnUIThread() {
// Consumer requests were set in the UI thread. They must be cancelled
// using the same thread.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
consumer_.reset();
tracker_.reset();
service_->CloseStatement(statement_);
delete this;
}
bool SQLiteCursor::GetFavicon(favicon_base::FaviconID id,
std::vector<unsigned char>* image_data) {
if (id) {
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&SQLiteCursor::GetFaviconForIDInUIThread,
base::Unretained(this), id,
base::Bind(&SQLiteCursor::OnFaviconData,
base::Unretained(this))));
if (test_observer_)
test_observer_->OnPostGetFaviconTask();
event_.Wait();
if (!favicon_bitmap_result_.is_valid())
return false;
scoped_refptr<base::RefCountedMemory> bitmap_data =
favicon_bitmap_result_.bitmap_data;
image_data->assign(bitmap_data->front(),
bitmap_data->front() + bitmap_data->size());
return true;
}
return false;
}
void SQLiteCursor::GetFaviconForIDInUIThread(
favicon_base::FaviconID id,
const favicon_base::FaviconRawBitmapCallback& callback) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!tracker_.get())
tracker_.reset(new base::CancelableTaskTracker());
favicon_service_->GetLargestRawFaviconForID(id, callback, tracker_.get());
}
void SQLiteCursor::OnFaviconData(
const favicon_base::FaviconRawBitmapResult& bitmap_result) {
favicon_bitmap_result_ = bitmap_result;
event_.Signal();
if (test_observer_)
test_observer_->OnGetFaviconResult();
}
void SQLiteCursor::OnMoved(AndroidHistoryProviderService::Handle handle,
int pos) {
position_ = pos;
event_.Signal();
if (test_observer_)
// Notified test_observer on UI thread instead of the one it will wait.
test_observer_->OnGetMoveToResult();
}
SQLiteCursor::JavaColumnType SQLiteCursor::GetColumnTypeInternal(int column) {
if (column == statement_->favicon_index())
return SQLiteCursor::BLOB;
return ToJavaColumnType(statement_->statement()->ColumnType(column));
}
void SQLiteCursor::RunMoveStatementOnUIThread(int pos) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!consumer_.get())
consumer_.reset(new CancelableRequestConsumer());
service_->MoveStatement(
statement_, position_, pos, consumer_.get(),
base::Bind(&SQLiteCursor::OnMoved, base::Unretained(this)));
}
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