Question

I got a problem mapping oracle by hibernate

I got these classes

Stock.java

    package com.mc.stock;

    import java.util.HashSet;
    import java.util.Set;
    import javax.persistence.Basic;
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.FetchType;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;
    import javax.persistence.OneToMany;
    import javax.persistence.SequenceGenerator;
    import javax.persistence.Table;
    import javax.persistence.UniqueConstraint;

    @Entity
    @Table(name = "stock", uniqueConstraints = {
        @UniqueConstraint(columnNames = "STOCK_NAME"),
        @UniqueConstraint(columnNames = "STOCK_CODE")})
    public class Stock implements java.io.Serializable {

        private Integer stockId;
        private String stockCode;
        private String stockName;
        private Set<StockDailyRecord> stockDailyRecords = new HashSet<StockDailyRecord>(
            0);

        public Stock() {
        }

        public Stock(String stockCode, String stockName) {
            this.stockCode = stockCode;
            this.stockName = stockName;
        }

        public Stock(String stockCode, String stockName,
            Set<StockDailyRecord> stockDailyRecords) {
            this.stockCode = stockCode;
            this.stockName = stockName;
            this.stockDailyRecords = stockDailyRecords;
        }

        @Id
        @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "seq_stock_id")
        @SequenceGenerator(name = "seq_stock_id", sequenceName = "seq_stock_id", initialValue = 1, allocationSize = 1)
        @Basic(optional = false)
        @Column(name = "STOCK_ID", unique = true, nullable = false)
        public Integer getStockId() {
            return this.stockId;
        }

        public void setStockId(Integer stockId) {
            this.stockId = stockId;
        }

        @Column(name = "STOCK_CODE", unique = true, nullable = false, length = 10)
        public String getStockCode() {
            return this.stockCode;
        }

        public void setStockCode(String stockCode) {
            this.stockCode = stockCode;
        }

        @Column(name = "STOCK_NAME", unique = true, nullable = false, length = 20)
        public String getStockName() {
            return this.stockName;
        }

        public void setStockName(String stockName) {
            this.stockName = stockName;
        }

        @OneToMany(fetch = FetchType.LAZY, mappedBy = "stock")
        public Set<StockDailyRecord> getStockDailyRecords() {
            return this.stockDailyRecords;
        }

        public void setStockDailyRecords(Set<StockDailyRecord> stockDailyRecords) {
            this.stockDailyRecords = stockDailyRecords;
        }
    }

StockDailyRecord.java

    package com.mc.stock;

    import java.util.Date;
    import javax.persistence.Basic;
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.FetchType;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;
    import javax.persistence.JoinColumn;
    import javax.persistence.ManyToOne;
    import javax.persistence.SequenceGenerator;
    import javax.persistence.Table;
    import javax.persistence.Temporal;
    import javax.persistence.TemporalType;
    import javax.persistence.UniqueConstraint;

    @Entity
    @Table(name = "stock_daily_record", uniqueConstraints = @UniqueConstraint(columnNames = "DATEX"))
    public class StockDailyRecord implements java.io.Serializable {

        private Integer recordId;
        private Stock stock;
        private Integer priceOpen;
        private Integer priceClose;
        private Integer priceChange;
        private Long volume;
        private Date date;

        public StockDailyRecord() {
        }

        public StockDailyRecord(Stock stock, Date date) {
            this.stock = stock;
            this.date = date;
        }

        public StockDailyRecord(Stock stock, Integer priceOpen, Integer priceClose,
                Integer priceChange, Long volume, Date date) {
            this.stock = stock;
            this.priceOpen = priceOpen;
            this.priceClose = priceClose;
            this.priceChange = priceChange;
            this.volume = volume;
            this.date = date;
        }



        @Id
        @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "seq_daily_record")
        @SequenceGenerator(name = "seq_daily_record", sequenceName = "seq_daily_record", initialValue = 1, allocationSize = 1)
        @Basic(optional = false)
        @Column(name = "RECORD_ID", unique = true, nullable = false)
        public Integer getRecordId() {
            return this.recordId;
        }

        public void setRecordId(Integer recordId) {
            this.recordId = recordId;
        }

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "STOCK_ID", nullable = false)
        public Stock getStock() {
            return this.stock;
        }

        public void setStock(Stock stock) {
            this.stock = stock;
        }

        @Column(name = "PRICE_OPEN", precision = 6)
        public Integer getPriceOpen() {
            return this.priceOpen;
        }

        public void setPriceOpen(Integer priceOpen) {
            this.priceOpen = priceOpen;
        }

        @Column(name = "PRICE_CLOSE", precision = 6)
        public Integer getPriceClose() {
            return this.priceClose;
        }

        public void setPriceClose(Integer priceClose) {
            this.priceClose = priceClose;
        }

        @Column(name = "PRICE_CHANGE", precision = 6)
        public Integer getPriceChange() {
            return this.priceChange;
        }

        public void setPriceChange(Integer priceChange) {
            this.priceChange = priceChange;
        }

        @Column(name = "VOLUME")
        public Long getVolume() {
            return this.volume;
        }

        public void setVolume(Long volume) {
            this.volume = volume;
        }

        @Temporal(TemporalType.DATE)
        @Column(name = "DATEX", unique = true, nullable = false, length = 10)
        public Date getDate() {
            return this.date;
        }

        public void setDate(Date date) {
            this.date = date;
        }

    }

and when I try to run this test:

    package com.mc;

    import java.util.Date;

    import org.hibernate.Session;

    import com.mc.stock.Stock;
    import com.mc.stock.StockDailyRecord;
    import com.mc.util.HibernateUtil;

    public class App {

        public static void main(String[] args) {
            System.out.println("Hibernate one to many (Annotation)");
            Session session = HibernateUtil.getSessionFactory().openSession();

            session.beginTransaction();

            Stock stock = new Stock();
            stock.setStockCode("7052");
            stock.setStockName("PADINI");
            session.save(stock);


            StockDailyRecord stockDailyRecords = new StockDailyRecord();
            stockDailyRecords.setPriceOpen(new Integer("2"));
            stockDailyRecords.setPriceClose(new Integer("11"));
            stockDailyRecords.setPriceChange(new Integer("10"));
            stockDailyRecords.setVolume(30L);
            stockDailyRecords.setDate(new Date());

            stockDailyRecords.setStock(stock);


            stock.getStockDailyRecords().add(stockDailyRecords);

            session.save(stockDailyRecords);

            session.getTransaction().commit();
            System.out.println("Done");
        }
    }

I get this error:

2011-08-12_02:14:43.296 WARN  o.h.util.JDBCExceptionReporter 
    - SQL Error: 2291, SQLState: 23000
2011-08-12_02:14:43.296 ERROR o.h.util.JDBCExceptionReporter 
    - ORA-02291: integrity  constraint (HX.SYS_C004028) violated - parent key not found
2011-08-12_02:14:43.296 WARN  o.h.util.JDBCExceptionReporter 
    - SQL Error: 2291, SQLState: 23000
2011-08-12_02:14:43.296 ERROR o.h.util.JDBCExceptionReporter 
    - ORA-02291: integrity constraint (HX.SYS_C004028) violated - parent key not found

Exception in thread "main" org.hibernate.exception.ConstraintViolationException: 
    Could not execute JDBC batch update

I’m new to hibernate and I would thank any help on this

Thanks in advance.

Answer 1

You are not setting the contents of the Set from stock (setStockDailyRecords). I would try annotating setStockDailyRecords as

@OneToMany(fetch = FetchType.LAZY, mappedBy = "stock", inverse = "true")

That means that the set is not directly created in the database, they retrieve it using the inverse relationship (through the FK in StockDailyRecord)

---

UPDATED to answer MHERO’s first comment.

Check http://docs.jboss.org/hibernate/core/3.3/reference/en/html/collections.html#collections-mapping for the inverse attribute.

Other option that you have is to move save(stock) just before the session is closed (remember to set the Set of setStockDailyRecords with the appropiate values.