Develop Reference

Get value from java lang object on hibernate

I have query:
public List<InvoiceItems> findAllBalance(String external_key) throws HibernateException {
return (List<InvoiceItems>) session.createQuery("select SUM(i.amount) as amount, t.record_id from Accounts a, InvoiceItems i, Tenant t WHERE a.record_id = i.account_record_id AND t.record_id=a.tenant_record_id AND a.external_key='"+external_key+"' group by i.tenant_record_id, t.record_id").list();
}
InvoiceItems.java:
package id.co.keriss.consolidate.ee;
import java.util.Date;
import org.jpos.ee.Accounts;
public class InvoiceItems {
private long record_id;
private String id;
private String type;
private String invoice_id;
private Accounts account_record_id;
private Tenant tenant_record_id;
private String description;
private long amount;
private Date created_date;
private String usage_name;
private String plan_name;
private String account_id;
public String getAccount_id() {
return account_id;
}
public void setAccount_id(String account_id) {
this.account_id = account_id;
}
public long getRecord_id() {
return record_id;
}
public void setRecord_id(long record_id) {
this.record_id = record_id;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getInvoice_id() {
return invoice_id;
}
public void setInvoice_id(String invoice_id) {
this.invoice_id = invoice_id;
}
public Accounts getAccount_record_id() {
return account_record_id;
}
public void setAccount_record_id(Accounts account_record_id) {
this.account_record_id = account_record_id;
}
public Tenant getTenant_record_id() {
return tenant_record_id;
}
public void setTenant_record_id(Tenant tenant_record_id) {
this.tenant_record_id = tenant_record_id;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public long getAmount() {
return amount;
}
public void setAmount(long amount) {
this.amount = amount;
}
public Date getCreated_date() {
return created_date;
}
public void setCreated_date(Date created_date) {
this.created_date = created_date;
}
public String getUsage_name() {
return usage_name;
}
public void setUsage_name(String usage_name) {
this.usage_name = usage_name;
}
public String getPlan_name() {
return plan_name;
}
public void setPlan_name(String plan_name) {
this.plan_name = plan_name;
}
}
then set to an variable:
List<InvoiceItems> invoiceItems = invoiceItemsDao.findAllBalance(jsonRecv.getString("externalkey"));
I want to get the value from that query, what I try:
LogSystem.info(request, "List : " + invoiceItems.get(0).getId();
I got an error "can't cast to InvoiceItems"
then I try changing from List<InvoiceItems> to just List
get with this :
LogSystem.info(request, "List : " + invoiceItems.get(0);
but the output like this not the value:
[Ljava.lang.Object;#41ea9df8
any advice? final result what i want is calculate amount of tenant

session.createQuery take HQL (Hibernate query language) however I see you use native SQL. Try using createSQLQuery method.
public List<InvoiceItems> findAllBalance(String external_key) throws HibernateException {
Query query = session.createSQLQuery("select SUM(i.amount) as amount, t.record_id from Accounts a, InvoiceItems i, Tenant t WHERE a.record_id = i.account_record_id AND t.record_id=a.tenant_record_id AND a.external_key='"+external_key+"' group by i.tenant_record_id, t.record_id");
query.setResultTransformer(Transformers.aliasToBean(InvoiceItems.class));
List<InvoiceItems> list = query.list();
return list;
}

show all list query java hibernate

i have this function to query in hibernate:
public List<TransactionQR> getAllTransaction() throws HibernateException {
return this.session.createQuery("SELECT id FROM TransactionQR").list();
}
then is success to show the data like this in html:
[2, 3]
but when i add more column in SELECT like this:
public List<TransactionQR> getAllTransaction() throws HibernateException {
return this.session.createQuery("SELECT id, codeqr FROM TransactionQR").list();
}
the result show like this:
[Ljava.lang.Object;#25026824, [Ljava.lang.Object;#170b75f9]
what is Ljava.lang.Object;#25026824 ? is return object, can i handle it to convert from list to json ?
i have model TransactionQR.java :
public class TransactionQR implements Serializable {
private Long id;
private String codeqr;
private Date approvaltime;
private String merchant;
private String code_merchant;
private Long amount;
private Long saldoawal;
private Integer tracenumber;
private String state;
private Date createdate;
private Batch batch;
public TransactionQR() {
}
public TransactionQR(Long id, String codeqr, Date approvaltime, String merchant, String code_merchant, Long amount,
Long saldoawal, Integer tracenumber, String state, Date createdate, Batch batch) {
super();
this.id = id;
this.codeqr = codeqr;
this.approvaltime = approvaltime;
this.merchant = merchant;
this.code_merchant = code_merchant;
this.amount = amount;
this.saldoawal = saldoawal;
this.tracenumber = tracenumber;
this.state = state;
this.createdate = createdate;
this.batch = batch;
}
public Long getId() {
return id;
}
public Date getApprovalTime() {
return approvaltime;
}
public Batch getBatch() {
return batch;
}
public void setBatch(Batch batch) {
this.batch = batch;
}
public void setApprovalTime(Date approvalTime) {
this.approvaltime = approvalTime;
}
public void setId(Long id) {
this.id = id;
}
public Date getApprovaltime() {
return approvaltime;
}
public void setApprovaltime(Date approvaltime) {
this.approvaltime = approvaltime;
}
public String getCodeqr() {
return codeqr;
}
public void setCodeqr(String codeqr) {
this.codeqr = codeqr;
}
public String getMerchant() {
return merchant;
}
public void setMerchant(String merchant) {
this.merchant = merchant;
}
public String getCode_merchant() {
return code_merchant;
}
public void setCode_merchant(String code_merchant) {
this.code_merchant = code_merchant;
}
public Long getAmount() {
return amount;
}
public void setAmount(Long amount) {
this.amount = amount;
}
public Long getSaldoawal() {
return saldoawal;
}
public void setSaldoawal(Long saldoawal) {
this.saldoawal = saldoawal;
}
public Integer getTracenumber() {
return tracenumber;
}
public void setTracenumber(Integer tracenumber) {
this.tracenumber = tracenumber;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public Date getCreatedate() {
return createdate;
}
public void setCreatedate(Date createdate) {
this.createdate = createdate;
}
}
the result is i want to show all data from database in list

In second case, since you are selecting two attributes, that is why session.createQuery("").list returns a list of object array(List<Object[]>) . At each index of list you will find an object array. Each array will have two indexes. First index will provide id while the second one would provide codeqr. So, basically you need to iterate over the list. Then fetch each value individually like arr[0], arr[1]..

null values returning from gson.fromJson

I have some values in my object are returning by value null when converting from json to object and some others doesn't,i can't figure out why is that happening
here's my code to convert
OriginalMovie originalMovie = gson.fromJson(jsonString, OriginalMovie.class);
here's my json
{"page":1,
"results":[{"adult":false,
"backdrop_path":"/o4I5sHdjzs29hBWzHtS2MKD3JsM.jpg",
"genre_ids":[878,28,53,12],
"id":87101,"original_language":"en",
"original_title":"Terminator Genisys",
"overview":"The year is 2029. John Connor, leader of the resistance continues the war against the machines.",
"release_date":"2015-07-01",
"poster_path":"/5JU9ytZJyR3zmClGmVm9q4Geqbd.jpg",
"popularity":54.970301,
"title":"Terminator Genisys","video":false,
"vote_average":6.4,
"vote_count":197}],
"total_pages":11666,"total_results":233312}
and here's my base class (contains results)
package MovieReviewHelper;
import java.util.ArrayList;
import java.util.List;
public class OriginalMovie
{
private long page;
private List<Result> results = new ArrayList<Result>();
private long totalPages;
private long totalResults;
public long getPage()
{
return page;
}
public void setPage(long page)
{
this.page = page;
}
public List<Result> getResults()
{
return results;
}
public void setResults(List<Result> results)
{
this.results = results;
}
public long getTotalPages() {
return totalPages;
}
public void setTotalPages(long totalPages)
{
this.totalPages = totalPages;
}
public long getTotalResults()
{
return totalResults;
}
public void setTotalResults(long totalResults)
{
this.totalResults = totalResults;
}
}
and here's my other class
package MovieReviewHelper;
import java.util.ArrayList;
import java.util.List;
public class Result {
private boolean adult;
private String backdropPath;
private List<Long> genreIds = new ArrayList<Long>();
private long id;
private String originalLanguage;
private String originalTitle;
private String overview;
private String releaseDate;
private String posterPath;
private double popularity;
private String title;
private boolean video;
private double voteAverage;
private long voteCount;
public boolean isAdult()
{
return adult;
}
public void setAdult(boolean adult)
{
this.adult = adult;
}
public String getBackdropPath()
{
return backdropPath;
}
public void setBackdropPath(String backdropPath)
{
this.backdropPath = backdropPath;
}
public List<Long> getGenreIds()
{
return genreIds;
}
public void setGenreIds(List<Long> genreIds)
{
this.genreIds = genreIds;
}
public long getId()
{
return id;
}
public void setId(long id)
{
this.id = id;
}
public String getOriginalLanguage()
{
return originalLanguage;
}
public void setOriginalLanguage(String originalLanguage)
{
this.originalLanguage = originalLanguage;
}
public String getOriginalTitle()
{
return originalTitle;
}
public void setOriginalTitle(String originalTitle)
{
this.originalTitle = originalTitle;
}
public String getOverview()
{
return overview;
}
public void setOverview(String overview)
{
this.overview = overview;
}
public String getReleaseDate()
{
return releaseDate;
}
public void setReleaseDate(String releaseDate)
{
this.releaseDate = releaseDate;
}
public String getPosterPath()
{
return posterPath;
}
public void setPosterPath(String posterPath)
{
this.posterPath = posterPath;
}
public double getPopularity()
{
return popularity;
}
public void setPopularity(double popularity)
{
this.popularity = popularity;
}
public String getTitle()
{
return title;
}
public void setTitle(String title)
{
this.title = title;
}
public boolean isVideo()
{
return video;
}
public void setVideo(boolean video)
{
this.video = video;
}
public double getVoteAverage()
{
return voteAverage;
}
public void setVoteAverage(double voteAverage)
{
this.voteAverage = voteAverage;
}
public long getVoteCount()
{
return voteCount;
}
public void setVoteCount(long voteCount)
{
this.voteCount = voteCount;
}
}

Your Json and Class variables should have the same name.
backdrop_path in Json and backdropPath in class would not work

Incase this helps for someone like me who spent half a day in trying to figure out a similar issue with gson.fromJson() returning object with null values, but when using #JsonProperty with an underscore in name and using Lombok in the model class.
My model class had a property like below and am using Lombok #Data for class
#JsonProperty(value="dsv_id")
private String dsvId;
So in my Json file I was using
"dsv_id"="123456"
Which was causing null value. The way I resolved it was changing the Json to have below ie.without the underscore. That fixed the problem for me.
"dsvId = "123456"

Hibernate JPA searching two joined tables

I am pretty new to Hibernate and JPA implementation in Spring, so basically have set up a MySQL 5 database which maps to the domain objects below.
I am trying to search for Location on the Company_Details table but I can't figure out how to search the class Product_Details for Product_Name at the same time
If anyone could help that would be great.
Company_Details
#Entity
public class Company_Details implements Serializable{
/**
*
*/
private static final long serialVersionUID = 3336251433829975771L;
#Id
#GeneratedValue
private Integer Id;
private String Company;
private String Address_Line_1;
private String Address_Line_2;
private String Postcode;
private String County;
private String Country;
private String Mobile_Number;
private String Telephone_Number;
private String URL;
private String Contact;
private String Logo_URL;
private double Amount_Overall;
private double Amount_Paid;
private Timestamp Date_Joined;
private int Account_Details;
#OneToMany(fetch = FetchType.EAGER, mappedBy = "Company_Id")
private List<Product_Details> products;
public Integer getId() {
return Id;
}
public void setId(Integer id) {
Id = id;
}
public String getCompany() {
return Company;
}
public void setCompany(String company) {
Company = company;
}
public String getAddress_Line_1() {
return Address_Line_1;
}
public void setAddress_Line_1(String address_Line_1) {
Address_Line_1 = address_Line_1;
}
public String getAddress_Line_2() {
return Address_Line_2;
}
public void setAddress_Line_2(String address_Line_2) {
Address_Line_2 = address_Line_2;
}
public String getPostcode() {
return Postcode;
}
public void setPostcode(String postcode) {
Postcode = postcode;
}
public String getCounty() {
return County;
}
public void setCounty(String county) {
County = county;
}
public String getCountry() {
return Country;
}
public void setCountry(String country) {
Country = country;
}
public String getMobile_Number() {
return Mobile_Number;
}
public void setMobile_Number(String mobile_Number) {
Mobile_Number = mobile_Number;
}
public String getTelephone_Number() {
return Telephone_Number;
}
public void setTelephone_Number(String telephone_Number) {
Telephone_Number = telephone_Number;
}
public String getURL() {
return URL;
}
public void setURL(String uRL) {
URL = uRL;
}
public String getContact() {
return Contact;
}
public void setContact(String contact) {
Contact = contact;
}
public String getLogo_URL() {
return Logo_URL;
}
public void setLogo_URL(String logo_URL) {
Logo_URL = logo_URL;
}
public double getAmount_Overall() {
return Amount_Overall;
}
public void setAmount_Overall(double amount_Overall) {
Amount_Overall = amount_Overall;
}
public double getAmount_Paid() {
return Amount_Paid;
}
public void setAmount_Paid(double amount_Paid) {
Amount_Paid = amount_Paid;
}
public Timestamp getDate_Joined() {
return Date_Joined;
}
public void setDate_Joined(Timestamp date_Joined) {
Date_Joined = date_Joined;
}
public int getAccount_Details() {
return Account_Details;
}
public void setAccount_Details(int account_Details) {
Account_Details = account_Details;
}
public List<Product_Details> getProducts() {
return products;
}
public void setProducts(List<Product_Details> products) {
this.products = products;
}
Product_Details
#Entity
public class Product_Details implements Serializable{
/**
*
*/
private static final long serialVersionUID = 6477618197240654478L;
#Id
#GeneratedValue
private Integer Id;
private Integer Company_Id;
private String Product_Name;
private String Description;
private String Main_Photo_URL;
private String Other_Photo_URLS;
private Integer Total_Bookings;
private double Average_Rating;
private Integer Number_Of_Slots;
private Integer Time_Per_Slot;
private double Price_Per_Slot;
private String Monday_Open;
private String Tuesday_Open;
private String Wednesday_Open;
private String Thursday_Open;
private String Friday_Open;
private String Saturday_Open;
private String Sunday_Open;
private String Dates_Closed;
public Integer getId() {
return Id;
}
public void setId(Integer id) {
Id = id;
}
public Integer getCompany_Id() {
return Company_Id;
}
public void setCompany_Id(Integer company_Id) {
Company_Id = company_Id;
}
public String getProduct_Name() {
return Product_Name;
}
public void setProduct_Name(String product_Name) {
Product_Name = product_Name;
}
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
public String getMain_Photo_URL() {
return Main_Photo_URL;
}
public void setMain_Photo_URL(String main_Photo_URL) {
Main_Photo_URL = main_Photo_URL;
}
public String getOther_Photos_URLS() {
return Other_Photo_URLS;
}
public void setOther_Photos_URLS(String other_Photo_URLS) {
Other_Photo_URLS = other_Photo_URLS;
}
public Integer getTotal_Bookings() {
return Total_Bookings;
}
public void setTotal_Bookings(Integer total_Bookings) {
Total_Bookings = total_Bookings;
}
public double getAverage_Rating() {
return Average_Rating;
}
public void setAverage_Rating(double average_Rating) {
Average_Rating = average_Rating;
}
public Integer getNumber_Of_Slots() {
return Number_Of_Slots;
}
public void setNumber_Of_Slots(Integer number_Of_Slots) {
Number_Of_Slots = number_Of_Slots;
}
public Integer getTime_Per_Slot() {
return Time_Per_Slot;
}
public void setTime_Per_Slot(Integer time_Per_Slot) {
Time_Per_Slot = time_Per_Slot;
}
public double getPrice_Per_Slot() {
return Price_Per_Slot;
}
public void setPrice_Per_Slot(double price_Per_Slot) {
Price_Per_Slot = price_Per_Slot;
}
public String getMonday_Open() {
return Monday_Open;
}
public void setMonday_Open(String monday_Open) {
Monday_Open = monday_Open;
}
public String getTuesday_Open() {
return Tuesday_Open;
}
public void setTuesday_Open(String tuesday_Open) {
Tuesday_Open = tuesday_Open;
}
public String getWednesday_Open() {
return Wednesday_Open;
}
public void setWednesday_Open(String wednesday_Open) {
Wednesday_Open = wednesday_Open;
}
public String getThursday_Open() {
return Thursday_Open;
}
public void setThursday_Open(String thursday_Open) {
Thursday_Open = thursday_Open;
}
public String getFriday_Open() {
return Friday_Open;
}
public void setFriday_Open(String friday_Open) {
Friday_Open = friday_Open;
}
public String getSaturday_Open() {
return Saturday_Open;
}
public void setSaturday_Open(String saturday_Open) {
Saturday_Open = saturday_Open;
}
public String getSunday_Open() {
return Sunday_Open;
}
public void setSunday_Open(String sunday_Open) {
Sunday_Open = sunday_Open;
}
public String getDates_Closed() {
return Dates_Closed;
}
public void setDates_Closed(String dates_Closed) {
Dates_Closed = dates_Closed;
}
}
#Service
public class ProductServiceImpl implements ProductService{
private final static Logger LOG = Logger.getLogger(ProductServiceImpl.class.getName());
#PersistenceContext
EntityManager em;
#Transactional
public List<Company_Details> search(Search search) {
LOG.info("Entering search method");
CriteriaBuilder builder = em.getCriteriaBuilder();
CriteriaQuery<Company_Details> c = builder.createQuery(Company_Details.class);
Root<Company_Details> companyRoot = c.from(Company_Details.class);
c.select(companyRoot);
c.where(builder.equal(companyRoot.get("County"),search.getLocation()));
return em.createQuery(c).getResultList();
}
}

You need two criteria: criteria on the Company_Details class
And criteria on the Product_Details class
Then
Criteria crit1 = session.createCriteria(Company_Details.class);
crit1.add(restriction)
Criteria crit2 = crit1.createCriteria("products");
crit2.add(restriction)
// Then query crit1
List results = crit1.list();

JSON to Java Mapping Help - Nested Collection

I'm trying to figure out a way to transform this JSON String into a Java object graph but I'm unable to do so. Below, I've inserted my JSON String, and my two classes. I've verified that its a valid json structure. I've been trying googles api (http://sites.google.com/site/gson/gson-user-guide) but it doesn't map the nested Photo Collection. Any ideas or alternate libraries?
{"photos":{"page":1,"pages":73514,"perpage":50,"total":"3675674","photo":[{"id":"5516612975","owner":"23723942#N07","secret":"b8fb1fda57","server":"5213","farm":6,"title":"P3100006.JPG","ispublic":1,"isfriend":0,"isfamily":0},{"id":"5516449299","owner":"81031835#N00","secret":"67b56722da","server":"5171","farm":6,"title":"Kaiser Boys Volleyball","ispublic":1,"isfriend":0,"isfamily":0}]},"stat":"ok"}
Photos.java
public class Photos {
private int pages;
private int perpage;
private String total;
private List<Photo> photo;
private String stat;
public int getPages() {
return pages;
}
public void setPages(int pages) {
this.pages = pages;
}
public int getPerpage() {
return perpage;
}
public void setPerpage(int perpage) {
this.perpage = perpage;
}
public String getTotal() {
return total;
}
public void setTotal(String total) {
this.total = total;
}
public List<Photo> getPhoto() {
return photo;
}
public void setPhoto(List<Photo> photo) {
this.photo = photo;
}
public String getStat() {
return stat;
}
public void setStat(String stat) {
this.stat = stat;
}
}
Photo.java:
public class Photo {
private String id;
private String owner;
private String secret;
private String server;
private String farm;
private String title;
private int isPublic;
private int isFriend;
private int isFamily;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getOwner() {
return owner;
}
public void setOwner(String owner) {
this.owner = owner;
}
public String getSecret() {
return secret;
}
public void setSecret(String secret) {
this.secret = secret;
}
public String getServer() {
return server;
}
public void setServer(String server) {
this.server = server;
}
public String getFarm() {
return farm;
}
public void setFarm(String farm) {
this.farm = farm;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public int getIsPublic() {
return isPublic;
}
public void setIsPublic(int isPublic) {
this.isPublic = isPublic;
}
public int getIsFriend() {
return isFriend;
}
public void setIsFriend(int isFriend) {
this.isFriend = isFriend;
}
public int getIsFamily() {
return isFamily;
}
public void setIsFamily(int isFamily) {
this.isFamily = isFamily;
}
}

Use Jackson. It'll take care of converting to and from JSON. It provides multiple ways of approaching conversion, and is well-integrated with frameworks like Spring. Definitely one to know.