QJsonValue JsonDbReduceDefinition::addObject(JsonDbReduceDefinition::FunctionNumber functionNumber,
const QJsonValue &keyValue, QJsonValue previousValue, JsonDbObject object)
{
initScriptEngine();
QJSValue svKeyValue = mScriptEngine->toScriptValue(keyValue);
if (!mTargetValueName.isEmpty())
previousValue = previousValue.toObject().value(mTargetValueName);
QJSValue svPreviousValue = mScriptEngine->toScriptValue(previousValue);
QJSValue svObject = mScriptEngine->toScriptValue(static_cast<QJsonObject>(object));
QJSValueList reduceArgs;
reduceArgs << svKeyValue << svPreviousValue << svObject;
QJSValue reduced = mFunctions[functionNumber].call(reduceArgs);
if (!reduced.isUndefined() && !reduced.isError()) {
QJsonValue jsonReduced = mScriptEngine->fromScriptValue<QJsonValue>(reduced);
QJsonObject jsonReducedObject;
if (!mTargetValueName.isEmpty())
jsonReducedObject.insert(mTargetValueName, jsonReduced);
else
jsonReducedObject = jsonReduced.toObject();
return jsonReducedObject;
} else {
if (reduced.isError())
setError(QString::fromLatin1("Error executing %1 function: %2")
.arg((functionNumber == JsonDbReduceDefinition::Add ? QStringLiteral("add") : QStringLiteral("subtract")))
.arg(reduced.toString()));
return QJsonValue(QJsonValue::Undefined);
}
}
SearchEngine::SearchEngine() : m_scriptDebugger(NULL), m_debuggerWindow(NULL), m_scriptDebugingEnabled(false)
{
m_scriptEngine = new QScriptEngine(this);
initScriptEngine();
init();
m_result = SearchItemsStorrage::getInstance();
QApplicationSettingsPtr pSettings = QApplicationSettings::getInstance();
connect(pSettings.get(), SIGNAL(PropertyChanged(QString, QString)), SLOT(OnSettngsChnaged(QString, QString)));
}
ScriptBinding::ScriptBinding()
{
// 初始化文件监控对象
fileSystemWatcher = new FileSystemWatcher();
// 选择器
selector = new Selector();
initScriptEngine();
initRootSpace();
initNativeMethodToRootSpace();
initConsoleSpace();
//暂时不用的
//initExpandMethodToRootSpace();
}
void JsonDbReduceDefinition::definitionCreated()
{
initScriptEngine();
initIndexes();
GetObjectsResult getObjectResponse = mPartition->d_func()->getObjects(JsonDbString::kTypeStr, mSourceType);
if (!getObjectResponse.error.isNull()) {
if (jsondbSettings->verbose())
qDebug() << "createReduceDefinition" << mTargetType << getObjectResponse.error.toString();
setError(getObjectResponse.error.toString());
}
JsonDbObjectList objects = getObjectResponse.data;
for (int i = 0; i < objects.size(); i++)
updateObject(QJsonObject(), objects.at(i));
}
void JsonDbReduceDefinition::updateObject(JsonDbObject before, JsonDbObject after, JsonDbUpdateList *changeList)
{
initScriptEngine();
QJsonValue beforeKeyValue = sourceKeyValue(before);
QJsonValue afterKeyValue = sourceKeyValue(after);
if (jsondbSettings->debug())
qDebug() << "JsonDbReduceDefinition::updateObject"
<< "beforeKeyValue" << beforeKeyValue
<< "afterKeyValue" << afterKeyValue;
if (!after.isEmpty() && !after.isDeleted() && !before.isEmpty() && (beforeKeyValue != afterKeyValue)) {
// do a subtract only on the before key
if (!beforeKeyValue.isUndefined())
updateObject(before, QJsonObject(), changeList);
// and then continue here with the add with the after key
before = QJsonObject();
}
const QJsonValue keyValue((after.isEmpty() || after.isDeleted()) ? beforeKeyValue : afterKeyValue);
if (keyValue.isUndefined())
return;
GetObjectsResult getObjectResponse = mTargetTable->getObjects(mTargetKeyName, keyValue, mTargetType);
if (!getObjectResponse.error.isNull())
setError(getObjectResponse.error.toString());
JsonDbObject previousObject;
QJsonValue previousValue(QJsonValue::Undefined);
JsonDbObjectList previousResults = getObjectResponse.data;
for (int k = 0; k < previousResults.size(); ++k) {
JsonDbObject previous = previousResults.at(k);
if (previous.value(QStringLiteral("_reduceUuid")).toString() == mUuid) {
previousObject = previous;
previousValue = previousObject;
break;
}
}
QJsonValue value = previousValue;
if (!before.isEmpty())
value = addObject(JsonDbReduceDefinition::Subtract, keyValue, value, before);
if (!after.isEmpty() && !after.isDeleted())
value = addObject(JsonDbReduceDefinition::Add, keyValue, value, after);
JsonDbObjectList objectsToUpdate;
// if we had a previous object to reduce
if (previousObject.contains(JsonDbString::kUuidStr)) {
// and now the value is undefined
if (value.isUndefined()) {
// then remove it
previousObject.markDeleted();
objectsToUpdate.append(previousObject);
} else {
//otherwise update it
JsonDbObject reduced(value.toObject());
reduced.insert(JsonDbString::kTypeStr, mTargetType);
reduced.insert(JsonDbString::kUuidStr,
previousObject.value(JsonDbString::kUuidStr));
reduced.insert(JsonDbString::kVersionStr,
previousObject.value(JsonDbString::kVersionStr));
reduced.insert(mTargetKeyName, keyValue);
reduced.insert(QStringLiteral("_reduceUuid"), mUuid);
objectsToUpdate.append(reduced);
}
} else if (!value.isUndefined()) {
// otherwise create the new object
JsonDbObject reduced(value.toObject());
reduced.insert(JsonDbString::kTypeStr, mTargetType);
reduced.insert(mTargetKeyName, keyValue);
reduced.insert(QStringLiteral("_reduceUuid"), mUuid);
objectsToUpdate.append(reduced);
}
JsonDbWriteResult res = mPartition->updateObjects(mOwner, objectsToUpdate, JsonDbPartition::ViewObject, changeList);
if (res.code != JsonDbError::NoError)
setError(QString::fromLatin1("Error executing add function: %1").arg(res.message));
}
