what is the equivalent of PRINTER_INFO_2 struct of c++ in c#
pinvoke.net is your friend:
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct PRINTER_INFO_2
{
[MarshalAs(UnmanagedType.LPTStr)]
public string pServerName;
[MarshalAs(UnmanagedType.LPTStr)]
public string pPrinterName;
[MarshalAs(UnmanagedType.LPTStr)]
public string pShareName;
[MarshalAs(UnmanagedType.LPTStr)]
public string pPortName;
[MarshalAs(UnmanagedType.LPTStr)]
public string pDriverName;
[MarshalAs(UnmanagedType.LPTStr)]
public string pComment;
[MarshalAs(UnmanagedType.LPTStr)]
public string pLocation;
public IntPtr pDevMode;
[MarshalAs(UnmanagedType.LPTStr)]
public string pSepFile;
[MarshalAs(UnmanagedType.LPTStr)]
public string pPrintProcessor;
[MarshalAs(UnmanagedType.LPTStr)]
public string pDatatype;
[MarshalAs(UnmanagedType.LPTStr)]
public string pParameters;
public IntPtr pSecurityDescriptor;
public uint Attributes;
public uint Priority;
public uint DefaultPriority;
public uint StartTime;
public uint UntilTime;
public uint Status;
public uint cJobs;
public uint AveragePPM;
}
Related
long story short, I have one settlementItemeBase class as my father and two children. I want to make the father class parcelable so as extension happens, my two child classes be parcelable as well. I don't exactly know what I'm doing right or wrong. I searched little bit but nothing helped me.
here are my classes:
SettlementItemBase:
public class SettlementItemBase implements Parcelable{
public SettlementItemBase(){}
protected SettlementItemBase(Parcel in) {
}
public static final Creator<SettlementItemBase> CREATOR = new Creator<SettlementItemBase>() {
#Override
public SettlementItemBase createFromParcel(Parcel in) {
return new SettlementItemBase(in);
}
#Override
public SettlementItemBase[] newArray(int size) {
return new SettlementItemBase[size];
}
};
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
}
}
first child class:
public class FirstClass extends SettlementItemBase {
private int id;
private int cardId;
private String cardNumber;
private String expDate;
private String currency;
private String url;
public FirstClass(){
id = 0;
cardId = 0;
cardNumber = "";
expDate = "";
currency = "";
url = "";
}
protected FirstClass(Parcel in) {
super(in);
id = in.readInt();
cardId = in.readInt();
cardNumber = in.readString();
expDate = in.readString();
currency = in.readString();
url = in.readString();
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(id);
dest.writeInt(cardId);
dest.writeString(cardNumber);
dest.writeString(expDate);
dest.writeString(currency);
dest.writeString(url);
}
public int getId() {
return id;
}
public int getCardId() {
return cardId;
}
public String getCardNumber() {
return cardNumber;
}
public String getExpDate() {
return expDate;
}
public String getCurrency() {
return currency;
}
public String getUrl() {
return url;
}
}
second child class:
public class SecondClass extends SettlementItemBase{
private int id;
private String currency;
private String accountNumber;
private String ibanNumber;
public SecondClass(int id, String currency,
String accountNumber, String ibanNumber){
this.id = id;
this.currency = currency;
this.accountNumber = accountNumber;
this.ibanNumber = ibanNumber;
}
protected SecondClass(Parcel in){
super(in);
id = in.readInt();
currency = in.readString();
accountNumber = in.readString();
ibanNumber = in.readString();
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(id);
dest.writeString(currency);
dest.writeString(accountNumber);
dest.writeString(ibanNumber);
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCurrency() {
return currency;
}
public String getAccountNumber() {
return accountNumber;
}
public String getIbanNumber() {
return ibanNumber;
}
}
I'm passing and getting an ArrayList of both child class' items with intent putParcelableArrayListExtra and getParcelableArrayListExtra methods and get the following error:
Parcel android.os.Parcel#2d0fde33: Unmarshalling unknown type code 3276849 at offset 172
any help would be appreciated 3>
well I'm posting this for those who may run into the same problem as me.
the problem was solved after adding the Creator statement to the child classes.
for one of the child classes it would be like:
public static final Creator<FirstClass> CREATOR = new Creator<FirstClass>() {
#Override
public FirstClass createFromParcel(Parcel in) {
return new FirstClass(in);
}
#Override
public FirstClass[] newArray(int size) {
return new FirstClass[size];
}
};
hope this helps. 3>
Hi I am trying to convert an xml file into Java Objects using JAXB and I am very new to java. I have created the pojo classes and added some annotations but I am not sure whether they are right? I have spent hours in google but couldn't find what is wrong.
This is my xml :
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<question id="1">
<answers>
<answername>java is a programming language</answername>
<id>101</id>
<postedby>ravi</postedby>
</answers>
<answers>
<answername>java is a platform</answername>
<id>102</id>
<postedby>john</postedby>
</answers>
<questionname>What is java?</questionname>
<marks set=50>
<longAnswer set=45/>
<shortAnswer set=30/>
</marks>
</question>
Pojo classes:
#XmlRootElement(name="question")
public class Question {
private int id;
private String questionname;
private List<Answer> answers;
private List<Marks> marks;
public Question() {}
public Question(int id, String questionname, List<Answer> answers, List<Marks> marks) {
super();
this.id = id;
this.questionname = questionname;
this.answers = answers;
this.marks = marks;
}
#XmlElement(name="marks")
public List<Marks> getMarks() {
return marks;
}
public void setMarks(List<Marks> marks) {
this.marks = marks;
}
#XmlAttribute
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
#XmlElement
public String getQuestionname() {
return questionname;
}
public void setQuestionname(String questionname) {
this.questionname = questionname;
}
#XmlElement
public List<Answer> getAnswers() {
return answers;
}
public void setAnswers(List<Answer> answers) {
this.answers = answers;
}
}
public class Answer {
private int id;
private String answername;
private String postedby;
public Answer() {}
public Answer(int id, String answername, String postedby) {
super();
this.id = id;
this.answername = answername;
this.postedby = postedby;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getAnswername() {
return answername;
}
public void setAnswername(String answername) {
this.answername = answername;
}
public String getPostedby() {
return postedby;
}
public void setPostedby(String postedby) {
this.postedby = postedby;
}
}
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
public class Marks {
private LongAnswer longAnswer ;
private ShortAnswer shortAnswer;
private String set;
#XmlAttribute
public String getSet() {
return set;
}
public void setSet(String set) {
this.set = set;
}
#XmlElement(name="longAnswer")
public LongAnswer getLongAnswer() {
return longAnswer;
}
public void setLongAnswer(LongAnswer longAnswer) {
this.longAnswer = longAnswer;
}
#XmlElement(name="shortAnswer")
public ShortAnswer getShortAnswer() {
return shortAnswer;
}
public void setShortAnswer(ShortAnswer shortAnswer) {
this.shortAnswer = shortAnswer;
}
}
public class LongAnswer {
private String set;
public String getSet() {
return set;
}
public void setSet(String set) {
this.set = set;
}
public class ShortAnswer {
private String set;
public String getSet() {
return set;
}
public void setSet(String set) {
this.set = set;
}
}
Can anyone tell me how to annotate the 'marks' model class and how to set 'longAnswer' and 'shortAnswer' field. Because i am getting null values for them.
You should annotate your set properties with #XmlAttribute. Otherwise it looks quite fine.
What you could also do is create an XML Schema for you XML and compile it.
I'm trying to use spring-data-cassandra (1.1.2.RELEASE) and I'm running into an issue with the lack of embeddable type mapping in JPA parlance.
I have an entity class like this:
#Table
public class Customer {
private UUID id;
private String name;
private Address address;
public UUID getId() {
return id;
}
public void setId(UUID id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}
and the embeddable Address class:
public class Address {
private String address;
private String city;
private String state;
private String zip;
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public String getZip() {
return zip;
}
public void setZip(String zip) {
this.zip = zip;
}
}
My cassandra table:
create table customer (
id uuid primary key,
name text,
address text,
city text,
state text,
zip text
);
I want the properties of Address to be mapped into the containing entity, I don't want a separate table for addresses. In JPA, I believe I'd use an #Embeddable annotation. Is there some similar construct in spring-data-cassandra?
Embeddable types are not yet supported by spring-data-cassandra. A feature request is available at DATACASS-167.
The only possible part of an entity to embed is the primary key. If your primary key consists of multiple fields, you can externalize that fields into a separate class and use it afterwards with the #PrimaryKey annotation.
Comment.java
#Table("comments")
public class Comment {
#PrimaryKey
private CommentKey pk;
private String text;
}
CommentKey.java
#PrimaryKeyClass
public class CommentKey implements Serializable {
private static final long serialVersionUID = -7871651389236401141L;
#PrimaryKeyColumn(ordinal = 0, type = PrimaryKeyType.PARTITIONED)
private String author;
#PrimaryKeyColumn(ordinal = 1)
private String company;
}
HTH, Mark
I am displaying a ProductList, which is made up of Product objects. The Product has attributes of type int, string, string, and int. The data is being pulled from the database and I build a ProductList. The data is in the database, I can see it, but when I display the table, the table shows 0's for the 2 int columns, and blanks in the String columns. Here is the ProductList:
#ManagedBean
public class ProductList {
private ArrayList<Product> allProducts;
public ProductList(){
allProducts = DatabaseConnector.getAllProducts();
}
public ArrayList<Product> getAllProducts(){
return allProducts;
}
public void setAllProducts(ArrayList<Product> allProducts){
this.allProducts = allProducts;
}
}
And here is the Product bean:
#ManagedBean
public class Product {
private int id;
private String productName;
private String description;
private int quantity;
public Product() {
}
public void setId(int id) {
this.id = id;
}
public void setProductName(String productName) {
this.productName = productName;
}
public void setDescription(String description) {
this.description = description;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public int getId() {
return id;
}
public String getProductName() {
return productName;
}
public String getDescription() {
return description;
}
public int getQuantity() {
return quantity;
}
}
Should I change the scope of the beans?
Add scope annotation to your bean , for example #RequestScoped or #ViewScoped
otherwise it will be the default scope which is #NoneScoped
When I tried to serialize a generic list of objects, I get some data loss, with any of the variables that are used by the derived classes. I used to have those variables in the derived class, but since the base class was getting serialized I assumed the derived variables would get ignored.
The Code:
[XmlInclude(typeof(AchievementStock))]
[XmlInclude(typeof(AchievementCash))]
[XmlInclude(typeof(AchievementStockSpecify))]
public abstract class Achievement : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected string _title;
protected string _description;
protected int _cashValue;
protected bool _completed;
//Cash
protected int _amountCash;
protected bool _greater;
//Stocks
protected int _amountStocks;
//StockSpecify
protected string _stockName;
protected int _amount;
public abstract void CheckAchievement(AssetManager assetManager, AchievementManager achievementManager);
public Achievement()
{
}
public Achievement(string title, string description, int cashValue, bool completed)
{
Title = title;
Description = description;
_cashValue = cashValue;
_completed = completed;
}
public void PropertyChangedEvent(string assetName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(assetName));
}
}
}
public class AchievementCash : Achievement
{
public AchievementCash(string title, string description, int cashValue, bool completed, int amountCash, bool greater)
: base(title, description, cashValue, completed)
{
_amountCash = amountCash;
_greater = greater;
}
public AchievementCash()
{
}
public override void CheckAchievement(AssetManager assetManager, AchievementManager achievementManager)
{
}
}
public class AchievementStock : Achievement
{
public AchievementStock(string title, string description, int cashValue, bool completed, int amountStocks)
: base(title, description, cashValue, completed)
{
_amountStocks = amountStocks;
}
public AchievementStock()
{
}
public override void CheckAchievement(AssetManager assetManager, AchievementManager achievementManager)
{
}
}
public class AchievementStockSpecify : Achievement
{
public AchievementStockSpecify(string title, string description, int cashValue, bool completed, string stockName, int amount)
: base(title, description, cashValue, completed)
{
_stockName = stockName;
_amount = amount;
}
public AchievementStockSpecify()
{
}
public override void CheckAchievement(AssetManager assetManager, AchievementManager achievementManager)
{
}
}
The variables that become default value are:
//Cash
protected int _amountCash;
protected bool _greater;
//Stocks
protected int _amountStocks;
//StockSpecify
protected string _stockName;
protected int _amount;
Anyone have any ideas on why this is occurring?
You must have public fields rather than protected fields as only public properties and fields can be serialized by XMLSerializer.