C++ ConvertPtr类代码示例

ConvertPtr Convert::getConvert()
{
    static ConvertPtr convert;
    static Mutex mutex;
    Lock xx(mutex);

    if(convert.get()==0) {
        convert = ConvertPtr(new Convert());
    }
    return convert;
}

namespace epics { namespace pvaClient {

class PvaClientPostHandlerPvt: public PostHandler
{
    PvaClientPutData * easyData;
    size_t fieldNumber;
public:
    PvaClientPostHandlerPvt(PvaClientPutData *easyData,size_t fieldNumber)
    : easyData(easyData),fieldNumber(fieldNumber){}
    void postPut() { easyData->postPut(fieldNumber);}
};


typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
static ConvertPtr convert = getConvert();
static string noValue("no value field");
static string notScalar("value is not a scalar");
static string notCompatibleScalar("value is not a compatible scalar");
static string notArray("value is not an array");
static string notScalarArray("value is not a scalarArray");
static string notDoubleArray("value is not a doubleArray");
static string notStringArray("value is not a stringArray");

PvaClientPutDataPtr PvaClientPutData::create(StructureConstPtr const & structure)
{
    PvaClientPutDataPtr epv(new PvaClientPutData(structure));
    return epv;
}

PvaClientPutData::PvaClientPutData(StructureConstPtr const & structure)
: structure(structure),
  pvStructure(getPVDataCreate()->createPVStructure(structure)),
  bitSet(BitSetPtr(new BitSet(pvStructure->getNumberFields())))
{
    messagePrefix = "";
    size_t nfields = pvStructure->getNumberFields();
    postHandler.resize(nfields);
    PVFieldPtr pvField;
    for(size_t i =0; i<nfields; ++i)
    {
        postHandler[i] = PostHandlerPtr(new PvaClientPostHandlerPvt(this, i));
        if(i==0) {
            pvField = pvStructure;
        } else {
            pvField = pvStructure->getSubField(i);
        }
        pvField->setPostHandler(postHandler[i]);
    }
    pvValue = pvStructure->getSubField("value");
}

void PvaClientPutData::checkValue()
{
    if(pvValue) return;
    throw std::runtime_error(messagePrefix + noValue);
}

void PvaClientPutData::postPut(size_t fieldNumber)
{
    bitSet->set(fieldNumber);
}

void PvaClientPutData::setMessagePrefix(std::string const & value)
{
    messagePrefix = value + " ";
}

StructureConstPtr PvaClientPutData::getStructure()
{return structure;}

PVStructurePtr PvaClientPutData::getPVStructure()
{return pvStructure;}

BitSetPtr PvaClientPutData::getChangedBitSet()
{return bitSet;}

std::ostream & PvaClientPutData::showChanged(std::ostream & out)
{
    size_t nextSet = bitSet->nextSetBit(0);
    PVFieldPtr pvField;
    while(nextSet!=string::npos) {
        if(nextSet==0) {
             pvField = pvStructure;
        } else {
              pvField = pvStructure->getSubField(nextSet);
        }
        string name = pvField->getFullName();
        out << name << " = " << pvField << endl;
        nextSet = bitSet->nextSetBit(nextSet+1);
    }
    return out;
}

bool PvaClientPutData::hasValue()
{
    if(!pvValue) return false;
    return true;
}

bool PvaClientPutData::isValueScalar()
//.........这里部分代码省略.........

namespace epics { namespace pvaClient {


typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
static ConvertPtr convert = getConvert();
static string noStructure("no pvStructure ");
static string noValue("no value field");
static string noScalar("value is not a scalar");
static string noArray("value is not an array");
static string noScalarArray("value is not a scalarArray");
static string noAlarm("no alarm");
static string noTimeStamp("no timeStamp");

PvaClientDataPtr PvaClientData::create(StructureConstPtr const & structure)
{
    if(PvaClient::getDebug()) cout << "PvaClientData::create\n";
    PvaClientDataPtr epv(new PvaClientData(structure));
    return epv;
}

PvaClientData::PvaClientData(StructureConstPtr const & structure)
: structure(structure)
{
}

void PvaClientData::checkValue()
{
    if(PvaClient::getDebug()) cout << "PvaClientData::checkValue\n";
    if(pvValue) return;
    throw std::runtime_error(messagePrefix + noValue);
}

void PvaClientData::setMessagePrefix(std::string const & value)
{
    messagePrefix = value + " ";
}

StructureConstPtr PvaClientData::getStructure()
{
    return structure;
}

PVStructurePtr PvaClientData::getPVStructure()
{
    if(pvStructure) return pvStructure;
    throw std::runtime_error(messagePrefix + noStructure);
}

BitSetPtr PvaClientData::getChangedBitSet()
{
    if(bitSet)return bitSet;
    throw std::runtime_error(messagePrefix + noStructure);
}

std::ostream & PvaClientData::showChanged(std::ostream & out)
{
    if(!bitSet) throw std::runtime_error(messagePrefix + noStructure);
    size_t nextSet = bitSet->nextSetBit(0);
    PVFieldPtr pvField;
    while(nextSet!=string::npos) {
        if(nextSet==0) {
             pvField = pvStructure;
        } else {
              pvField = pvStructure->getSubField(nextSet);
        }
        string name = pvField->getFullName();
        out << name << " = " << pvField << endl;
        nextSet = bitSet->nextSetBit(nextSet+1);
    }
    return out;
}

void PvaClientData::setData(
    PVStructurePtr const & pvStructureFrom,
    BitSetPtr const & bitSetFrom)
{
   if(PvaClient::getDebug()) cout << "PvaClientData::setData\n";
   pvStructure = pvStructureFrom;
   bitSet = bitSetFrom;
   pvValue = pvStructure->getSubField("value");
}

bool PvaClientData::hasValue()
{
    if(PvaClient::getDebug()) cout << "PvaClientData::hasValue\n";
    if(!pvValue) return false;
    return true;
}

bool PvaClientData::isValueScalar()
{
    if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalar\n";
    if(!pvValue) return false;
    if(pvValue->getField()->getType()==scalar) return true;
    return false;
}

bool PvaClientData::isValueScalarArray()
{
    if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalarArray\n";
//.........这里部分代码省略.........

static void testPVScalar(
    string const & valueNameRecord,
    string const & valueNameCopy,
    PVRecordPtr const & pvRecord,
    PVCopyPtr const & pvCopy)
{
    PVStructurePtr pvStructureRecord;
    PVStructurePtr pvStructureCopy;
    PVFieldPtr pvField;
    PVScalarPtr pvValueRecord;
    PVScalarPtr pvValueCopy;
    BitSetPtr bitSet;
    size_t offset;
    ConvertPtr convert = getConvert();

    cout << endl;
    pvStructureRecord = pvRecord->getPVRecordStructure()->getPVStructure();
    pvField = pvStructureRecord->getSubField(valueNameRecord);
    pvValueRecord = static_pointer_cast<PVScalar>(pvField);
    convert->fromDouble(pvValueRecord,.04);
    StructureConstPtr structure = pvCopy->getStructure();
    cout << "structure from copy" << endl << *structure << endl;
    pvStructureCopy = pvCopy->createPVStructure();
    pvField = pvStructureCopy->getSubField(valueNameCopy);
    pvValueCopy = static_pointer_cast<PVScalar>(pvField);
    bitSet = BitSetPtr(new BitSet(pvStructureCopy->getNumberFields()));
    pvCopy->initCopy(pvStructureCopy, bitSet);
    cout << "after initCopy pvValueCopy " << convert->toDouble(pvValueCopy);
    cout << endl;
    convert->fromDouble(pvValueRecord,.06);
    pvCopy->updateCopySetBitSet(pvStructureCopy,bitSet);
    cout << "after put(.06) pvValueCopy " << convert->toDouble(pvValueCopy);
    cout << " bitSet " << *bitSet;
    cout << endl;
    offset = pvCopy->getCopyOffset(pvValueRecord);
    cout << "getCopyOffset() " << offset;
    cout << " pvValueCopy->getOffset() " << pvValueCopy->getFieldOffset();
    cout << " pvValueRecord->getOffset() " << pvValueRecord->getFieldOffset();
    cout << " bitSet " << *bitSet;
    cout << endl;
    bitSet->clear();
    convert->fromDouble(pvValueRecord,1.0);
    cout << "before updateCopyFromBitSet";
    cout << " recordValue " << convert->toDouble(pvValueRecord);
    cout << " copyValue " << convert->toDouble(pvValueCopy);
    cout << " bitSet " << *bitSet;
    cout << endl;
    bitSet->set(0);
    pvCopy->updateCopyFromBitSet(pvStructureCopy,bitSet);
    cout << "after updateCopyFromBitSet";
    cout << " recordValue " << convert->toDouble(pvValueRecord);
    cout << " copyValue " << convert->toDouble(pvValueCopy);
    cout << " bitSet " << *bitSet;
    cout << endl;
    convert->fromDouble(pvValueCopy,2.0);
    bitSet->set(0);
    cout << "before updateMaster";
    cout << " recordValue " << convert->toDouble(pvValueRecord);
    cout << " copyValue " << convert->toDouble(pvValueCopy);
    cout << " bitSet " << *bitSet;
    cout << endl;
    pvCopy->updateMaster(pvStructureCopy,bitSet);
    cout << "after updateMaster";
    cout << " recordValue " << convert->toDouble(pvValueRecord);
    cout << " copyValue " << convert->toDouble(pvValueCopy);
    cout << " bitSet " << *bitSet;
    cout << endl;
}

namespace epics { namespace pvaClient { 

static ConvertPtr convert = getConvert();
static FieldCreatePtr fieldCreate = getFieldCreate();
static PVDataCreatePtr pvDataCreate = getPVDataCreate();
static StandardFieldPtr standardField = getStandardField();
static CreateRequest::shared_pointer  createRequest = CreateRequest::create();


PvaClientMultiPutDoublePtr PvaClientMultiPutDouble::create(
    PvaClientMultiChannelPtr const &pvaMultiChannel,
    PvaClientChannelArray const &pvaClientChannelArray)
{
    PvaClientMultiPutDoublePtr pvaClientMultiPutDouble(
         new PvaClientMultiPutDouble(pvaMultiChannel,pvaClientChannelArray));
    return pvaClientMultiPutDouble;
}

PvaClientMultiPutDouble::PvaClientMultiPutDouble(
     PvaClientMultiChannelPtr const &pvaClientMultiChannel,
     PvaClientChannelArray const &pvaClientChannelArray)
: pvaClientMultiChannel(pvaClientMultiChannel),
  pvaClientChannelArray(pvaClientChannelArray),
  nchannel(pvaClientChannelArray.size()),
  pvaClientPut(std::vector<PvaClientPutPtr>(nchannel,PvaClientPutPtr())),
  isPutConnected(false),
  isDestroyed(false)
{
}



PvaClientMultiPutDouble::~PvaClientMultiPutDouble()
{
    destroy();
}

void PvaClientMultiPutDouble::destroy()
{
    {
        Lock xx(mutex);
        if(isDestroyed) return;
        isDestroyed = true;
    }
    pvaClientChannelArray.clear();
}

void PvaClientMultiPutDouble::connect()
{
    shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
    for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) {
               pvaClientPut[i] = pvaClientChannelArray[i]->createPut();
               pvaClientPut[i]->issueConnect();
         }
    }
    for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) {
               Status status = pvaClientPut[i]->waitConnect();
               if(status.isOK()) continue;
               string message = string("channel ") + pvaClientChannelArray[i]->getChannelName()
                   + " PvaChannelPut::waitConnect " + status.getMessage();
               throw std::runtime_error(message);
         }
    }
    isPutConnected = true;
}

void PvaClientMultiPutDouble::put(epics::pvData::shared_vector<double> const &data)
{
    if(!isPutConnected) connect();
    if(data.size()!=nchannel) {
         throw std::runtime_error("data has wrong size");
    }
    shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
    for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) {
               PVStructurePtr pvTop = pvaClientPut[i]->getData()->getPVStructure();
               PVScalarPtr pvValue = pvTop->getSubField<PVScalar>("value");
               convert->fromDouble(pvValue,data[i]);
               pvaClientPut[i]->issuePut();
         }
         if(isConnected[i]) {
              Status status = pvaClientPut[i]->waitPut();
              if(status.isOK())  continue;
              string message = string("channel ") + pvaClientChannelArray[i]->getChannelName()
                   + " PvaChannelPut::waitPut " + status.getMessage();
              throw std::runtime_error(message);
         }
    }
}

}}

static void testPVScalar(
    string const & valueNameMaster,
    string const & valueNameCopy,
    PVStructurePtr const & pvMaster,
    PVCopyPtr const & pvCopy)
{
    PVStructurePtr pvStructureCopy;
    PVScalarPtr pvValueMaster;
    PVScalarPtr pvValueCopy;
    BitSetPtr bitSet;
    size_t offset;
    ConvertPtr convert = getConvert();

    pvValueMaster = pvMaster->getSubField<PVScalar>(valueNameMaster);
    convert->fromDouble(pvValueMaster,.04);
    StructureConstPtr structure = pvCopy->getStructure();
    if(debug) { cout << "structure from copy" << endl << *structure << endl; }
    pvStructureCopy = pvCopy->createPVStructure();
    pvValueCopy = pvStructureCopy->getSubField<PVScalar>(valueNameCopy);
    bitSet = BitSetPtr(new BitSet(pvStructureCopy->getNumberFields()));
    pvCopy->initCopy(pvStructureCopy, bitSet);
    if(debug) { cout << "after initCopy pvValueCopy " << convert->toDouble(pvValueCopy); }
    if(debug) { cout << endl; }
    convert->fromDouble(pvValueMaster,.06);
    testOk1(convert->toDouble(pvValueCopy)==.04);
    pvCopy->updateCopySetBitSet(pvStructureCopy,bitSet);
    testOk1(convert->toDouble(pvValueCopy)==.06);
    testOk1(bitSet->get(pvValueCopy->getFieldOffset()));
    if(debug) { cout << "after put(.06) pvValueCopy " << convert->toDouble(pvValueCopy); }
    if(debug) { cout << " bitSet " << *bitSet; }
    if(debug) { cout << endl; }
    offset = pvCopy->getCopyOffset(pvValueMaster);
    if(debug) { cout << "getCopyOffset() " << offset; }
    if(debug) { cout << " pvValueCopy->getOffset() " << pvValueCopy->getFieldOffset(); }
    if(debug) { cout << " pvValueMaster->getOffset() " << pvValueMaster->getFieldOffset(); }
    if(debug) { cout << " bitSet " << *bitSet; }
    if(debug) { cout << endl; }
    bitSet->clear();
    convert->fromDouble(pvValueMaster,1.0);
    if(debug) { cout << "before updateCopyFromBitSet"; }
    if(debug) { cout << " masterValue " << convert->toDouble(pvValueMaster); }
    if(debug) { cout << " copyValue " << convert->toDouble(pvValueCopy); }
    if(debug) { cout << " bitSet " << *bitSet; }
    if(debug) { cout << endl; }
    bitSet->set(0);
    testOk1(convert->toDouble(pvValueCopy)==0.06);
    pvCopy->updateCopyFromBitSet(pvStructureCopy,bitSet);
    testOk1(convert->toDouble(pvValueCopy)==1.0);
    if(debug) { cout << "after updateCopyFromBitSet"; }
    if(debug) { cout << " masterValue " << convert->toDouble(pvValueMaster); }
    if(debug) { cout << " copyValue " << convert->toDouble(pvValueCopy); }
    if(debug) { cout << " bitSet " << *bitSet; }
    if(debug) { cout << endl; }
    convert->fromDouble(pvValueCopy,2.0);
    bitSet->set(0);
    if(debug) { cout << "before updateMaster"; }
    if(debug) { cout << " masterValue " << convert->toDouble(pvValueMaster); }
    if(debug) { cout << " copyValue " << convert->toDouble(pvValueCopy); }
    if(debug) { cout << " bitSet " << *bitSet; }
    if(debug) { cout << endl; }
    testOk1(convert->toDouble(pvValueMaster)==1.0);
    pvCopy->updateMaster(pvStructureCopy,bitSet);
    testOk1(convert->toDouble(pvValueMaster)==2.0);
    if(debug) { cout << "after updateMaster"; }
    if(debug) { cout << " masterValue " << convert->toDouble(pvValueMaster); }
    if(debug) { cout << " copyValue " << convert->toDouble(pvValueCopy); }
    if(debug) { cout << " bitSet " << *bitSet; }
    if(debug) { cout << endl; }
}

static void testPVScalarCommon(string /*fieldName*/,ScalarType stype)
{
    PVScalarPtr pvScalar = pvDataCreate->createPVScalar(stype);
    if(stype==pvBoolean) {
        convert->fromString(pvScalar,string("true"));
    } else {
        convert->fromString(pvScalar,string("10"));
    }
}

static void examplePVFieldPut(PvaClientPtr const &pva,string const & channelName,string const & providerName)
{
    cout << "__examplePVFieldPut__ channelName " << channelName << " providerName " << providerName << endl;
    PvaClientChannelPtr channel = pva->channel(channelName,providerName,2.0);
    PvaClientPutPtr put = channel->put();
    PvaClientPutDataPtr putData = put->getData();
    PVScalarPtr pvScalar = static_pointer_cast<PVScalar>(putData->getValue());
    convert->fromDouble(pvScalar,1.0); put->put();
    cout <<  channel->get("field(value)")->getData()->showChanged(cout) << endl;
    convert->fromDouble(pvScalar,2.0); put->put();
    cout <<  channel->get("field(value)")->getData()->showChanged(cout) << endl;
}

string PvaClientData::getString()
{
    if(PvaClient::getDebug()) cout << "PvaClientData::getString\n";
    PVScalarPtr pvScalar;
    PVStructurePtr pvStructure = getPVStructure();
    PVFieldPtr pvValue  = pvStructure->getSubField("value");
    if(pvValue) {
        Type type = pvValue->getField()->getType();
        if(type==scalar) pvScalar = static_pointer_cast<PVScalar>(pvValue);
    }
    if(!pvScalar) {
        while(true) {
             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
             if(fieldPtrArray.size()!=1) {
                  throw std::logic_error(
                      "PvaClientData::getString() pvRequest for multiple fields");
             }
             PVFieldPtr pvField(fieldPtrArray[0]);
             Type type = pvField->getField()->getType();
             if(type==scalar) {
                 pvScalar = static_pointer_cast<PVScalar>(pvField);
                 break;
             }
             if(pvField->getField()->getType()!=epics::pvData::structure) break;
             pvStructure = static_pointer_cast<PVStructure>(pvField);
        }
    }
    if(!pvScalar) {
        throw std::logic_error(
            "PvaClientData::getString() did not find a scalar field");
    }
    return convert->toString(pvScalar);
}

static void examplePVFieldPut(PvaClientPtr const &pva)
{
    cout << "example put\n";
    PvaClientChannelPtr channel = pva->channel("exampleDouble");
    PvaClientPutPtr put = channel->put();
    PvaClientPutDataPtr putData = put->getData();
    PVFieldPtr pvField = putData->getValue();
    PVScalarPtr pvScalar = static_pointer_cast<PVScalar>(pvField);
    try {
        convert->fromDouble(pvScalar,1.0); put->put();
        cout <<  channel->get("field()")->getData()->showChanged(cout) << endl;
        convert->fromDouble(pvScalar,2.0); put->put();
        cout <<  channel->get("field()")->getData()->showChanged(cout) << endl;
    } catch (std::runtime_error e) {
        cout << "exception " << e.what() << endl;
    }
}

void PvaClientPutData::putStringArray(std::vector<std::string> const & value)
{
    checkValue();
    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
    if(!pv) {
        throw std::runtime_error(messagePrefix + notScalarArray);
    }
    convert->fromStringArray(pv,0,value.size(),value,0);
}

static void testScalarArrayCommon(string /*fieldName*/,ScalarType stype)
{
    PVStructurePtr pvStructure = standardPVField->scalarArray(
        stype,alarmTimeStamp);
    PVScalarArrayPtr scalarArray = pvStructure->getSubField<PVScalarArray>("value");
    testOk1(scalarArray.get()!=0);
    if(stype==pvBoolean) {
        StringArray values(3);
        values[0] = "true";
        values[1] = "false";
        values[2] = "true";
        convert->fromStringArray(scalarArray, 0,3,values,0);
    } else {
        StringArray values(3);
        values[0] = "0";
        values[1] = "1";
        values[2] = "2";
        convert->fromStringArray(scalarArray, 0,3,values,0);
    }
    PVFieldPtr pvField = pvStructure->getSubField<PVInt>("alarm.status");
    testOk1(pvField.get()!=0);
}

double PvaClientPutData::getDouble()
{
    PVScalarPtr pvScalar = getScalarValue();
    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
    if(scalarType==pvDouble) {
        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
        return pvDouble->get();
    }
    if(!ScalarTypeFunc::isNumeric(scalarType)) {
        throw std::runtime_error(messagePrefix  + notCompatibleScalar);
    }
    return convert->toDouble(pvScalar);
}

void PvaClientMultiPutDouble::put(epics::pvData::shared_vector<double> const &data)
{
    if(!isPutConnected) connect();
    if(data.size()!=nchannel) {
         throw std::runtime_error("data has wrong size");
    }
    shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
    for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) {
               PVStructurePtr pvTop = pvaClientPut[i]->getData()->getPVStructure();
               PVScalarPtr pvValue = pvTop->getSubField<PVScalar>("value");
               convert->fromDouble(pvValue,data[i]);
               pvaClientPut[i]->issuePut();
         }
         if(isConnected[i]) {
              Status status = pvaClientPut[i]->waitPut();
              if(status.isOK())  continue;
              string message = string("channel ") + pvaClientChannelArray[i]->getChannelName()
                   + " PvaChannelPut::waitPut " + status.getMessage();
              throw std::runtime_error(message);
         }
    }
}

static void testPVScalarWithProperties(
    string /*fieldName*/,ScalarType stype)
{
    PVStructurePtr pvStructure;
    bool hasValueAlarm = false;
    bool hasBooleanAlarm = false;
    bool hasDisplayControl = false;
    switch(stype) {
        case pvBoolean: {
             pvStructure = standardPVField->scalar(
                 stype,alarmTimeStampValueAlarm);
             hasBooleanAlarm = true;
             PVBooleanPtr pvField = pvStructure->getSubField<PVBoolean>("value");
             pvField->put(true);
             break;
        }
        case pvByte: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVBytePtr pvField = pvStructure->getSubField<PVByte>("value");
             pvField->put(127);
             break;
        }
        case pvShort: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVShortPtr pvField = pvStructure->getSubField<PVShort>("value");
             pvField->put(32767);
             break;
        }
        case pvInt: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVIntPtr pvField = pvStructure->getSubField<PVInt>("value");
             pvField->put((int32)0x80000000);
             break;
        }
        case pvLong: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVLongPtr pvField = pvStructure->getSubField<PVLong>("value");
             int64 value = 0x80000000;
             value <<= 32;
             value |= 0xffffffff;
             pvField->put(value);
             break;
        }
        case pvUByte: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVUBytePtr pvField = pvStructure->getSubField<PVUByte>("value");
             pvField->put(255);
             break;
        }
        case pvUShort: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVUShortPtr pvField = pvStructure->getSubField<PVUShort>("value");
             pvField->put(65535);
             break;
        }
        case pvUInt: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVUIntPtr pvField = pvStructure->getSubField<PVUInt>("value");
             pvField->put((uint32)0x80000000);
             break;
        }
        case pvULong: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVULongPtr pvField = pvStructure->getSubField<PVULong>("value");
             int64 value = 0x80000000;
             value <<= 32;
             value |= 0xffffffff;
             pvField->put(value);
             break;
        }
        case pvFloat: {
             pvStructure = standardPVField->scalar(
                 stype,allProperties);
             hasValueAlarm = true;
             hasDisplayControl = true;
             PVFloatPtr pvField = pvStructure->getSubField<PVFloat>("value");
//.........这里部分代码省略.........