HSQLDB और हाइबरनेट: यूनिट टेस्ट org.hsqldb.HsqlException को जन्म देती है: उपयोगकर्ता विशेषाधिकार का अभाव है या नहीं मिला वस्तु

Question

मैं हाइबरनेट और HSQLDB के साथ जा पाने के लिए कोशिश कर रहा हूँ। मैंने अधिक मौजूदा संस्करणों के लिए एक ट्यूटोरियल अनुकूलित करने की कोशिश की, इसलिए समस्या हो सकती है। ऐसा तब होता है जब मैं जुनीट के साथ यूनिट परीक्षण चलाता हूं।

मैं HSQLDB 2.3.2 का उपयोग कर रहा हाइबरनेट (जेपीए) 4.3.5 के साथ।

त्रुटि मैं मिलता है:

16:40:16,802 DEBUG SQL:109 - select device0_.DEVICE_ID as DEVICE_I1_0_, device0_.DEVICE_FIRMWARE_VERSION as DEVICE_F2_0_, device0_.DEVICE_IMAGE as DEVICE_I3_0_ from DEVICES device0_ limit ? 16:40:16,802 DEBUG SQL:109 - select device0_.DEVICE_ID as DEVICE_I1_0_, device0_.DEVICE_FIRMWARE_VERSION as DEVICE_F2_0_, device0_.DEVICE_IMAGE as DEVICE_I3_0_ from DEVICES device0_ limit ? 16:40:16,802 DEBUG SQL:109 - select device0_.DEVICE_ID as DEVICE_I1_0_, device0_.DEVICE_FIRMWARE_VERSION as DEVICE_F2_0_, device0_.DEVICE_IMAGE as DEVICE_I3_0_ from DEVICES device0_ limit ? 16:40:16,803 WARN SqlExceptionHelper:144 - SQL Error: -5501, SQLState: 42501 16:40:16,803 WARN SqlExceptionHelper:144 - SQL Error: -5501, SQLState: 42501 16:40:16,803 ERROR SqlExceptionHelper:146 - user lacks privilege or object not found: DEVICES 16:40:16,803 ERROR SqlExceptionHelper:146 - user lacks privilege or object not found: DEVICES 16:40:16,804 ERROR gwt-log:81 - e: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement ... Caused by: org.hibernate.exception.SQLGrammarException: could not prepare statement ... Caused by: java.sql.SQLSyntaxErrorException: user lacks privilege or object not found: DEVICES ... Caused by: org.hsqldb.HsqlException: user lacks privilege or object not found: DEVICES ...

मेरे persistence.xml इस तरह दिखता है:

<persistence xmlns="http://java.sun.com/xml/ns/persistence" 
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xsi:schemaLocation="http://java.sun.com/xml/ns/persistence 
      http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" 
      version="2.0"> 

    <persistence-unit name="testproject" transaction-type="RESOURCE_LOCAL"> 
    <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> 


    <class>testproject.server.domain.Device</class> 

    <exclude-unlisted-classes/> 

    <properties> 

     <!-- Database connection settings --> 
     <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver" /> 
     <property name="hibernate.connection.url" value="jdbc:hsqldb:file:/db/testdb" /> 
     <property name="hibernate.connection.username" value="sa" /> 
     <property name="hibernate.connection.password" value="" /> 

     <!-- JDBC connection pool (use the built-in) --> 
     <property name="connection.pool_size" value="1" /> 

     <!-- SQL dialect --> 
     <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" /> 

     <!-- Enable Hibernate's automatic session context management --> 
     <property name="current_session_context_class" value="thread" /> 

     <!-- Disable the second-level cache --> 
     <property name="cache.provider_class" value="org.hibernate.cache.NoCacheProvider" /> 

     <!-- Echo all executed SQL to stdout --> 
     <!-- <property name="hibernate.show_sql" value="true" /> --> 
     <!-- <property name="hibernate.format_sql" value="true" /> --> 

     <!-- Drop and re-create the database schema on startup --> 
     <!-- This property should not be set in PRODUCTION environments --> 
     <!-- <property name="hibernate.hbm2ddl.auto" value="create" /> --> 

     <property name="hibernate.c3p0.min_size" value="5" /> 
     <property name="hibernate.c3p0.max_size" value="20" /> 
     <property name="hibernate.c3p0.timeout" value="300" /> 
     <property name="hibernate.c3p0.max_statements" value="50" /> 
     <property name="hibernate.c3p0.idle_test_period" value="3000" /> 
    </properties> 

    </persistence-unit> 
</persistence> 

मेरे Device.java इस तरह दिखता है:

package testproject.server.domain; 

import java.io.Serializable; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.Table; 

import testproject.shared.dto.DeviceDto; 

@Entity 
@Table(name = "DEVICES") 
public class Device implements Serializable { 

    private static final long serialVersionUID = 8161681740825989132L; 

    @Id 
    @Column(name = "DEVICE_ID") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    protected Long deviceId; 

    @Column(name = "DEVICE_IMAGE") 
    protected String image; 

    @Column(name = "DEVICE_FIRMWARE_VERSION") 
    protected String firmwareVersion; 

    public Device() { 
    } 

    public Device(Long deviceId) { 
     setDeviceId(deviceId); 
    } 

    public Device(DeviceDto device) { 
     setDeviceId(device.getDeviceId()); 
     setImage(device.getImage()); 
     setFirmwareVersion(device.getFirmwareVersion()); 
    } 

    public Long getDeviceId() { 
     return deviceId; 
    } 

    public void setDeviceId(Long deviceId) { 
     this.deviceId = deviceId; 
    } 

    public String getImage() { 
     return image; 
    } 

    public void setImage(String image) { 
     this.image = image; 
    } 

    public String getFirmwareVersion() { 
     return firmwareVersion; 
    } 

    public void setFirmwareVersion(String firmwareVersion) { 
     this.firmwareVersion = firmwareVersion; 
    } 

    @Override 
    public String toString() { 
     StringBuilder sb = new StringBuilder(); 
     sb.append("Device Id: ").append(getDeviceId()).append(", "); 
     sb.append("Image: ").append(getImage()).append(", "); 
     sb.append("Firmware Version: ").append(getFirmwareVersion()); 

     return sb.toString(); 
    } 

    //TODO: Do we need that? 
    @Override 
    public int hashCode() { 
     final int prime = 31; 
     int result = 1; 
     result = prime * result 
       + ((deviceId == null) ? 0 : deviceId.hashCode()); 
     return result; 
    } 

    @Override 
    public boolean equals(Object obj) { 
     if (this == obj) 
      return true; 
     if (obj == null) 
      return false; 
     if (!(obj instanceof Device)) 
      return false; 
     Device other = (Device) obj; 
     if (deviceId == null) { 
      if (other.deviceId != null) 
       return false; 
     } else if (!deviceId.equals(other.deviceId)) 
      return false; 
     return true; 
    } 
} 

और मेरे दाव इस तरह है:

package testproject.server.dao; 

import java.util.List; 

import javax.persistence.EntityManager; 
import javax.persistence.EntityManagerFactory; 
import javax.persistence.EntityTransaction; 
import javax.persistence.Persistence; 
import javax.persistence.TypedQuery; 

import testproject.server.domain.Device; 

public class DeviceDao extends BaseDao { 

     private static final EntityManagerFactory entityManagerFactory = 
      Persistence.createEntityManagerFactory("testproject"); 

     public static EntityManager createEntityManager() { 
     return entityManagerFactory.createEntityManager(); 
     } 

    public Long createObject(Object object) { 
     return createDevice((Device) object); 
    } 

    public List<Object> retrieveObjects(int maxResults, int firstResult) { 

     EntityManager em = createEntityManager(); 
     List<Object> list = null; 

     try { 
      TypedQuery<Object> query = em.createQuery(
        "select a from Device a", Object.class); 
      query.setMaxResults(maxResults); 
      query.setFirstResult(firstResult); 
      list = query.getResultList(); 
     } finally { 
      em.close(); 
     } 

     return list; 
    } 

    public Long createDevice(Device Device) { 

     // For an application-managed entity manager its best practice to create 
     // a 
     // new entity manager inside a method and close it before the method is 
     // finished. 

     EntityManager em = createEntityManager(); 
     EntityTransaction tx = em.getTransaction(); 
     Long DeviceId = -1L; 

     try { 
      tx.begin(); 
      em.persist(Device); 
      DeviceId = Device.getDeviceId(); 
      tx.commit(); 
     } catch (Throwable t) { 
      t.printStackTrace(); 
      tx.rollback(); 
     } finally { 
      em.close(); 
     } 

     return DeviceId; 
    } 

    public Device retrieveDevice(Long DeviceId) { 

     EntityManager em = createEntityManager(); 
     Device Device = null; 

     try { 
      TypedQuery<Device> query = em.createQuery(
        "select a from Device a where a.DeviceId = ?1", 
        Device.class); 
      query.setParameter(1, DeviceId); 
      Device = query.getSingleResult(); 
     } finally { 
      em.close(); 
     } 

     return Device; 
    } 

    public List<Device> retrieveDevices(int maxResults, int firstResult) { 

     EntityManager em = createEntityManager(); 
     List<Device> list = null; 

     try { 
      TypedQuery<Device> query = em.createQuery(
        "select a from Device a", Device.class); 
      query.setMaxResults(maxResults); 
      query.setFirstResult(firstResult); 
      list = query.getResultList(); 
     } finally { 
      em.close(); 
     } 

     return list; 
    } 

    public Device updateDevice(Device Device) { 

     EntityManager em = createEntityManager(); 
     EntityTransaction tx = em.getTransaction(); 
     Device Device2 = null; 

     try { 
      tx.begin(); 
      Device2 = em.merge(Device); 
      tx.commit(); 
     } catch (Throwable t) { 
      t.printStackTrace(); 
      tx.rollback(); 
     } finally { 
      em.close(); 
     } 

     return Device2; 
    } 

    public void deleteDevice(Device Device) { 

     EntityManager em = createEntityManager(); 
     EntityTransaction tx = em.getTransaction(); 

     try { 
      tx.begin(); 
      em.remove(em.merge(Device)); 
      tx.commit(); 
     } catch (Throwable t) { 
      t.printStackTrace(); 
      tx.rollback(); 
     } finally { 
      em.close(); 
     } 
    } 
} 

और आखिरी, अपने परीक्षण मामले (यह बेकार है, मैं सिर्फ इसे चलाने देखना चाहते हैं):

package testproject.server; 

import java.util.List; 

import org.apache.log4j.xml.DOMConfigurator; 
import org.junit.After; 
import org.junit.Before; 
import org.junit.Test; 

import com.allen_sauer.gwt.log.client.Log; 

import testproject.server.dao.DeviceDao; 
import testproject.server.domain.Device; 

public class DeviceTestCase { 

    private long startTimeMillis; 

    @Before 
    public void setUp() { 

    // The log4j configuration file must be in the Project's root directory 
    DOMConfigurator.configure("log4j.xml"); 

    startTimeMillis = System.currentTimeMillis(); 
    } 

    @Test 
    public void testDeviceDao() { 
    try { 
     Log.debug("testDeviceDao()"); 

     createDevices(); 

    } 
    catch (Exception e) { 
     Log.error("e: " + e); 
     e.printStackTrace(); 
    } 
    } 

    public void createDevice() { 

    Device d1 = new Device(); 
    d1.setFirmwareVersion("Firmware1"); 
    d1.setImage("Image1"); 

    DeviceDao deviceDao = new DeviceDao(); 
    deviceDao.createDevice(d1); 
    } 

    public void createDevices() { 

    Device d1 = new Device(); 
    d1.setFirmwareVersion("Firmware1"); 
    d1.setImage("Image1"); 

    Device d2 = new Device(); 
    d1.setFirmwareVersion("Firmware2"); 
    d1.setImage("Image2"); 

    Device d3 = new Device(); 
    d1.setFirmwareVersion("Firmware3"); 
    d1.setImage("Image3"); 

    DeviceDao deviceDao = new DeviceDao(); 

    deviceDao.createDevice(d1); 
    deviceDao.createDevice(d2); 
    deviceDao.createDevice(d3); 

    List<Device> devices = deviceDao.retrieveDevices(100, 0); 

    for (Device device : devices) { 
     Log.debug(device.toString()); 
    } 
    //TODO: Btw, this is not a really good test case ;) 
    } 

    @After 
    public void tearDown() { 
    long endTimeMillis = System.currentTimeMillis(); 
    float durationSeconds = (endTimeMillis - startTimeMillis)/1000F; 
    Log.debug("Duration: " + durationSeconds + " seconds"); 
    } 
} 

किसी को भी इसे ठीक करने पर एक सुझाव है, तो मैं बहुत खुश के बाद से मैं कर रहा हूँ होगा वास्तव में अभी अटक गया।

Answer 1

आपको जो संदेश मिलता है वह एचएसक्यूएलडीबी का कुछ गूढ़ तरीका है जो आपको बताता है कि DEVICES तालिका, जिसमें से आप चुनने का प्रयास कर रहे हैं, मौजूद नहीं है (या जिस उपयोगकर्ता से आप कनेक्ट कर रहे हैं उसके पास नहीं है इस तालिका तक पहुंच)। इसे बनाओ।