C++ XmlDeserializer::read方法代码示例

/**
 * Tests serialization and deserialization of cascaded STL containers
 * like @c std::vector or @c std::map.
 */
void testComplexSTL() {
    std::map<int, std::string> m1, m2, m3;
    m2[1] = "one";
    m3[2] = "two";
    m3[3] = "three";

    std::vector<std::map<int, std::string> > v;
    v.push_back(m1);
    v.push_back(m2);
    v.push_back(m3);

    std::stringstream stream;

    XmlSerializer s;
    s.serialize("v", v);
    s.write(stream);

    // Reset all variables to default values...
    v.clear();
    test(v.size() == 0, "vector is not empty");

    XmlDeserializer d;
    d.read(stream);
    d.deserialize("v", v);

    test(v.size() == 3, "not all vector item deserialized");
    test(v[0].size() == 0, "incorrect size of first vector item");
    test(v[1].size() == 1, "incorrect size of second vector item");
    test(v[2].size() == 2, "incorrect size of third vector item");
    test(v[1][1] == "one", "first item of second vector item incorrect deserialized");
    test(v[2][2] == "two", "first item of thrid vector item incorrect deserialized");
    test(v[2][3] == "three", "second item of third vector item incorrect deserialized");
}

/**
 * Tests serialization and deserialization of a @c std::map.
 */
void testMap() {
    std::map<int, std::string> m;
    m[1] = "one";
    m[2] = "two";
    m[3] = "three";

    std::stringstream stream;

    XmlSerializer s;
    s.serialize("m", m);
    s.write(stream);

    // Reset all variables to default values...
    m.clear();
    test(m.size() == 0, "map is not empty");

    XmlDeserializer d;
    d.read(stream);
    d.deserialize("m", m);

    test(m.size() == 3, "not all map items deserialized");
    test(m[1] == "one", "first pair incorrect deserialized");
    test(m[2] == "two", "second pair incorrect deserialized");
    test(m[3] == "three", "third pair incorrect deserialized");
}

bool deserializeSettings(PropertyOwner* po, const std::string& filename) {
    std::ifstream stream;
    stream.open(filename.c_str(), std::ios_base::in);
    if(stream.fail()) {
        stream.close();
        return false;
    }
    else {
        XmlDeserializer xmlDeserializer;
        try {
            xmlDeserializer.read(stream);
            po->deserialize(xmlDeserializer);
            stream.close();
        }
        catch (XmlSerializationNoSuchDataException) {
            // no data present => ignore
            xmlDeserializer.removeLastError();
            return false;
        }
        catch (SerializationException &e) {
            LWARNINGC("VoreenSettingsDialog", std::string("Deserialization failed: ") + e.what());
            return false;
        }
    }
    return true;
}

/**
 * Tests serialization and deserialization of pointers to abstract classes.
 */
void testIAbstractSerializable() {
    Abstract* a = new Specific();
    dynamic_cast<Specific*>(a)->i = 1;

    std::stringstream stream;

    AbstractFactory factory;

    XmlSerializer s;
    s.registerFactory(&factory);
    s.serialize("Abstract", a);
    s.write(stream);

    // Reset all variables to default values...
    delete a;
    a = 0;

    XmlDeserializer d;
    d.registerFactory(&factory);
    d.read(stream);
    d.deserialize("Abstract", a);

    test(a != 0, "a still null");
    Specific* specific = dynamic_cast<Specific*>(a);
    test(specific != 0, "cast to Specific* not possible");
    test(specific->i, 1, "a incorrect deserialized");

    delete a;
}

/**
 * Tests serialization and deserialization of tgt types.
 */
void testTgtData() {
    tgt::vec2 v2(1.0f, 2.0f);
    tgt::vec3 v3(3.0f, 4.0f, 5.0f);
    tgt::vec4 v4(6.0f, 7.0f, 8.0f, 9.0f);

    tgt::ivec2 iv2(1, 2);
    tgt::ivec3 iv3(3, 4, 5);
    tgt::ivec4 iv4(6, 7, 8, 9);

    std::stringstream stream;

    XmlSerializer s;
    s.serialize("v2", v2);
    s.serialize("v3", v3);
    s.serialize("v4", v4);
    s.serialize("iv2", iv2);
    s.serialize("iv3", iv3);
    s.serialize("iv4", iv4);
    s.write(stream);

    // Reset all variables to default values...
    v2 = tgt::vec2(0.0f, 0.0f);
    v3 = tgt::vec3(0.0f, 0.0f, 0.0f);
    v4 = tgt::vec4(0.0f, 0.0f, 0.0f, 0.0f);

    iv2 = tgt::ivec2(0, 0);
    iv3 = tgt::ivec3(0, 0, 0);
    iv4 = tgt::ivec4(0, 0, 0, 0);

    XmlDeserializer d;
    d.read(stream);
    d.deserialize("v2", v2);
    d.deserialize("v3", v3);
    d.deserialize("v4", v4);
    d.deserialize("iv2", iv2);
    d.deserialize("iv3", iv3);
    d.deserialize("iv4", iv4);

    test(v2.x, 1.0f, "v2.x incorrect deserialized");
    test(v2.y, 2.0f, "v2.y incorrect deserialized");
    test(v3.x, 3.0f, "v3.x incorrect deserialized");
    test(v3.y, 4.0f, "v3.y incorrect deserialized");
    test(v3.z, 5.0f, "v3.z incorrect deserialized");
    test(v4.x, 6.0f, "v4.x incorrect deserialized");
    test(v4.y, 7.0f, "v4.y incorrect deserialized");
    test(v4.z, 8.0f, "v4.z incorrect deserialized");
    test(v4.w, 9.0f, "v4.w incorrect deserialized");

    test(iv2.x, 1, "iv2.x incorrect deserialized");
    test(iv2.y, 2, "iv2.y incorrect deserialized");
    test(iv3.x, 3, "iv3.x incorrect deserialized");
    test(iv3.y, 4, "iv3.y incorrect deserialized");
    test(iv3.z, 5, "iv3.z incorrect deserialized");
    test(iv4.x, 6, "iv4.x incorrect deserialized");
    test(iv4.y, 7, "iv4.y incorrect deserialized");
    test(iv4.z, 8, "iv4.z incorrect deserialized");
    test(iv4.w, 9, "iv4.w incorrect deserialized");
}

/**
 * Tests serialization and deserialization of user defined data classes which realizes
 * the @c Serializable interface.
 */
void testUserDefinedData() {
    UserDefinedData d;
    d.data = 1;
    UserDefinedData* dp = &d;
    UserDefinedData* dp2 = new UserDefinedData();
    dp2->data = 2;

    UserDefinedDataContainer dc;
    dc.data.data = 3;
    dc.datap = &dc.data;

    std::stringstream stream;

    try {
        XmlSerializer s;
        s.serialize("d", d);
        s.serialize("dp", dp);
        s.serialize("dp2", dp2);
        s.serialize("dc", dc);
        s.write(stream);
        delete dp2;
    }
    catch (...) {
        delete dp2;
        throw;
    }

    // Reset all variables to default values...
    d.data = 0;
    dp = 0;
    dp2 = 0;
    dc.data.data = 0;
    dc.datap = 0;

    XmlDeserializer de;
    de.read(stream);
    de.deserialize("d", d);
    de.deserialize("dp", dp);
    de.deserialize("dp2", dp2);
    de.deserialize("dc", dc);

    test(d.data, 1, "d incorrect deserialized");

    test(dp != 0, "dp still null");
    test(dp == &d, "dp does not point to d");

    test(dp2 != 0, "dp2 still null");
    test(dp2->data, 2, "dp2 incorrect deserialized");

    delete dp2;

    test(dc.data.data, 3, "dc incorrect deserialized");
    test(dc.datap != 0, "dc.datap still null");
    test(dc.datap == &dc.data, "dc.datap does not point to dc.data");
}

void PropertyState::applyStateToProperty(Property* prop) const {
    tgtAssert(prop->getOwner()->getName() == propertyOwner_, "Property owner's name is different");
    tgtAssert(prop->getGuiName() == propertyName_, "Property's name is different");
    tgtAssert(prop->getID() == propertyID_, "Property's ID is different");

    XmlDeserializer d;

    std::stringstream stream(propertyValue_);
    d.read(stream);

    prop->deserializeValue(d);
    prop->invalidate();
}

/**
 * Tests that deserialization of not serialized data attempt
 * leads to an @c XmlSerializationNoSuchDataException.
 */
void testNoSuchDataException() {
    std::stringstream stream;

    XmlSerializer s;
    s.write(stream);

    XmlDeserializer d;
    d.read(stream);
    int i;
    try {
        d.deserialize("NotExistentKey", i);
        test(false, "No exception on deserialization of not existent key");
    }
    catch (XmlSerializationNoSuchDataException&) {
    }
}

/**
 * Tests serialization and deserialization of graph with a cycle.
 */
void testCycle() {
    Node node1;
    Node node2;
    Node node3;
    node1.successor = &node2;
    node2.successor = &node3;
    node3.successor = &node1;
    node1.predecessor = &node3;
    node2.predecessor = &node1;
    node3.predecessor = &node2;

    std::stringstream stream;

    XmlSerializer s;
    s.serialize("tree", node1);
    s.write(stream);

    // ATTENTION: Since every successor and predecessor is deserialized as a pointer reference,
    //            therefore new memory is allocated for node2 and node3. This means that you
    //            cannot check pointer addresses to these objects. But, you can check whether
    //            an equivalent data tree is deserialized.

    // Reset all variables to default values...
    node1.successor = 0;
    node1.predecessor = 0;

    XmlDeserializer d;
    d.read(stream);
    d.deserialize("tree", node1);

    test(node1.successor != 0, "node1.successor still null");
    test(node1.predecessor != 0, "node1.predecessor still null");

    Node* pnode1 = &node1;
    Node* pnode2 = node1.successor;
    Node* pnode3 = node1.predecessor;

    test(pnode2->predecessor == pnode1, "node1 is not the predecessor of node2");
    test(pnode2->successor == pnode3, "node3 is not the successor of node2");
    test(pnode3->predecessor == pnode2, "node2 is not the predecessor of node3");
    test(pnode3->successor == pnode1, "node1 is not the successor of node3");

    delete pnode2;
    delete pnode3;
}

DicomDict* DicomDict::loadFromFile(const std::string &fileName) throw (tgt::FileException) {
    //Check the given file
    if (!(tgt::FileSystem::fileExists(fileName)))
            throw tgt::FileNotFoundException("Dictionary not found", fileName);

    if (!(tgt::FileSystem::fileExtension(fileName) == "xml"))
            throw tgt::FileAccessException("Dictionary is not an XML file", fileName);

    //get Data from the file
    std::string xmlData;
    tgt::FileSystem sys;
    tgt::File* file = sys.open(fileName);

    if (!file->good())
        throw tgt::FileAccessException("Dictionary file cannot be accessed", fileName);

    xmlData = file->getAsString();

    if (file->isOpen())
        file->close();

    delete file;
    file = 0;

    DicomDict* dict = new DicomDict();

    //Put Data into a Stream to be read by XmlDeserializer and try to deserialize it
    std::stringstream stream;
    stream << xmlData;

    XmlDeserializer d;
    d.read(stream);

    try {
        dict->deserialize(d);
    }
    catch (tgt::Exception e) {
        throw tgt::FileAccessException("Could not load Dictionary: " + std::string(e.what()),fileName);
    }

    return dict;
}

Processor* Processor::clone() const {
    try {
        std::stringstream stream;

        // first serialize
        XmlSerializer s;
        s.serialize("this", this);
        s.write(stream);

        // then deserialize again
        XmlDeserializer d;
        d.read(stream);
        Processor* proc = 0;
        d.deserialize("this", proc);

        proc->setDescriptions();
        return proc;
    }
    catch (std::exception& e) {
        LERROR("Failed to clone processor '" << getID() << "': " << e.what());
        return 0;
    }
}

/**
 * Tests that direct deseralization of a pointer to an abstract class leads to
 * a @c XMLSerializationMemoryAllocationException.
 */
void testMemoryAllocationException() {
    Abstract* a = new Specific();

    std::stringstream stream;

    XmlSerializer s;
    s.serialize("Abstract", a);
    s.write(stream);

    // Reset all variables to default values...
    delete a;
    a = 0;

    XmlDeserializer d;
    d.read(stream);
    try {
        d.deserialize("Abstract", a);
        delete a;
        test(false, "No exception raised on abstract class memory allocation try");
    }
    catch (XmlSerializationMemoryAllocationException&) {
    }
}

/**
 * Tests serialization and deserialization of a @c std::set.
 */
void testSet() {
    const int SETELEMENTCOUNT = 5;

    std::set<int> set;
    for (int i = 0; i < SETELEMENTCOUNT; ++i)
        set.insert(i);

    std::stringstream stream;

    XmlSerializer s;
    s.serialize("set", set);
    s.write(stream);

    // Reset all variables to default values...
    set.clear();
    test(set.size() == 0, "set is not empty");

    XmlDeserializer d;
    d.read(stream);
    d.deserialize("set", set);

    test((int)set.size() == SETELEMENTCOUNT, "not all set items deserialized");

    bool deserializedValues[SETELEMENTCOUNT];
    for (int i = 0; i < SETELEMENTCOUNT; ++i)
        deserializedValues[i] = false;

    for (std::set<int>::iterator it = set.begin(); it != set.end(); ++it)
        if (*it >= 0 && *it < SETELEMENTCOUNT)
            deserializedValues[*it] = true;

    for (int i = 0; i < SETELEMENTCOUNT; ++i) {
        std::stringstream itemStream;
        itemStream << i;
        test(deserializedValues[i], "int item '" + itemStream.str() + "' not deserialized");
    }
}

/**
 * Helper function which test serialization and deserialization of a variable and pointer
 * with different serialization and deserialization order.
 */
void testPtrVarOrder(const bool& varFirstAtSerialization, const bool& varFirstAtDeserialization) {
    int i = 1;
    int* ip = &i;

    std::stringstream stream;

    XmlSerializer s;
    if (varFirstAtSerialization) {
        s.serialize("i", i);
        s.serialize("ip", ip);
    }
    else {
        s.serialize("ip", ip);
        s.serialize("i", i);
    }
    s.write(stream);

    // Reset all variables to default values...
    i = 0;
    ip = 0;

    XmlDeserializer d;
    d.read(stream);
    if (varFirstAtDeserialization) {
        d.deserialize("i", i);
        d.deserialize("ip", ip);
    }
    else {
        d.deserialize("ip", ip);
        d.deserialize("i", i);
    }

    test(i, 1, "i incorrect deserialized");
    test(ip != 0, "ip still null");
    test(ip == &i, "ip does not point to i");
}

/**
 * Tests serialization and deserialization of @c AbstractSerializable null pointers.
 */
void testBugAbstractSerializableNullPointerSerialization() {
    Abstract* a = 0;

    std::stringstream stream;

    AbstractFactory factory;

    XmlSerializer s;
    s.setUseAttributes(true);
    s.registerFactory(&factory);
    s.serialize("Abstract", a);
    s.write(stream);

    XmlDeserializer d;
    d.setUseAttributes(true);
    d.registerFactory(&factory);
    d.read(stream);
    try {
        d.deserialize("Abstract", a);
    }
    catch (XmlSerializationMemoryAllocationException&) {
        test(false, "bug occured, since memory allocation exception is thrown for 0 pointer");
    }
}