私は 2 つの JPA2 アノテーション付きクラスと 1 つの動作中の JUnit テストを持っていましたが、createManagerFactory が失敗する原因となる一意の制約を追加することにしました。
クラスは次のとおりです。
@Entity
@NamedQuery(
name="XmlConversion.Queries.XmlByPdfAndPdf2Xml",
query="SELECT c FROM XmlConversion c WHERE c.pdf = :pdfname AND c.pdf2xml_sha1 = :pdf2xml")
@Table(name = "xml_conversion", uniqueConstraints={
@UniqueConstraint(columnNames={"pdf_id", "pdf2xml_sha1"})})
public class XmlConversion implements java.io.Serializable {
private Integer id;
private Pdf pdf;
private Long xmlOutputSize;
private String pdf2xml_sha1;
private Integer durationMillisec;
private Date createdAt;
public XmlConversion() {
}
public XmlConversion(Pdf pdf, String pdf2xml_sha1_sourceforge) {
this.pdf = pdf;
this.pdf2xml_sha1 = pdf2xml_sha1_sourceforge;
}
public XmlConversion(Pdf pdf, Long xmlOutputSize, String gitVersion,
Integer durationMillisec) {
this.pdf = pdf;
this.xmlOutputSize = xmlOutputSize;
this.pdf2xml_sha1 = gitVersion;
this.durationMillisec = durationMillisec;
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "pdf_id", nullable = false)
public Pdf getPdf() {
return this.pdf;
}
public void setPdf(Pdf pdf) {
this.pdf = pdf;
}
@Column(name = "xml_output_size")
public Long getXmlOutputSize() {
return this.xmlOutputSize;
}
public void setXmlOutputSize(Long xmlOutputSize) {
this.xmlOutputSize = xmlOutputSize;
}
@Column(name = "pdf2xml_version", nullable = false, length = 45)
public String getPdf2xml_sha1() {
return this.pdf2xml_sha1;
}
public void setPdf2xml_sha1(String gitVersion) {
this.pdf2xml_sha1 = gitVersion;
}
@Column(name = "duration_millisec")
public Integer getDurationMillisec() {
return this.durationMillisec;
}
@Column(name = "created_at", columnDefinition="TIMESTAMP DEFAULT CURRENT_TIMESTAMP")
public Date getCreatedAt() {
return this.createdAt;
}
public void setCreatedAt(Date createdAt) {
//this.createdAt = createdAt;
//shall be set at the DB level
}
public void setDurationMillisec(Integer durationMillisec) {
this.durationMillisec = durationMillisec;
}
}
@Entity
@NamedQuery(
name="Pdf.Queries.PdfByNameAndSize",
query="SELECT c FROM Pdf c WHERE c.name = :pdfname AND c.size = :pdfsize"
)
@Table(name = "pdf", uniqueConstraints={
@UniqueConstraint(columnNames={"name", "size"})})
public class Pdf implements java.io.Serializable {
@Column(nullable=false)
private Integer id;
@Column(nullable=false)
private String name;
@Column(nullable=false)
private Long size;
private Set<XmlConversion> xmlConversions = new HashSet<XmlConversion>(0);
public Pdf() {
}
public Pdf(String name, Long size) {
this.name = name;
this.size = size;
}
public Pdf(String name, Long size, Set<XmlConversion> xmlConversions) {
this.name = name;
this.size = size;
this.xmlConversions = xmlConversions;
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
@Column(name = "name", nullable = false, length = 245)
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
@Column(name = "size", nullable = false, length = 16777215)
public Long getSize() {
return this.size;
}
public void setSize(Long size) {
this.size = size;
}
@OneToMany(fetch = FetchType.LAZY, mappedBy = "pdf")
public Set<XmlConversion> getXmlConversions() {
return this.xmlConversions;
}
public void setXmlConversions(Set<XmlConversion> xmlConversions) {
this.xmlConversions = xmlConversions;
}
}
JUnit テストは次のとおりです。
public class PersistenceTest {
private static EntityManagerFactory emf;
private static EntityManager em;
private static String randomPDFname;
private static String randomGITversion;
private static long sysTime = 0;
@BeforeClass
public static void createEntityManagerFactory() {
Logger.getLogger(PdfConverter.class.getName()).log(Level.INFO, "hibernate URL is "+System.getProperty("hurl"));
Logger.getLogger(PdfConverter.class.getName()).log(Level.INFO, "the path to pdf2xml is "+System.getProperty("pdf2xml"));
emf = Persistence.createEntityManagerFactory("pdfEx");
Logger.getLogger(PdfConverter.class.getName()).log(Level.INFO, "PersistenceTest: EM factory created!");
randomPDFname = UUID.randomUUID().toString()+".pdf";
randomGITversion = UUID.randomUUID().toString()+".git";
Logger.getLogger(PdfConverter.class.getName()).log(Level.INFO, "PersistenceTest: randomPDFname = "+randomPDFname);
Logger.getLogger(PdfConverter.class.getName()).log(Level.INFO, "PersistenceTest: randomGITversion = "+randomGITversion);
sysTime = Math.round(System.currentTimeMillis()/((10^3)*3600));//systime in hours, rather than millisecs
}
@Before
public void beginTransaction() {
em = (EntityManager) Persistence.createEntityManagerFactory("pdfEx").createEntityManager();
em.getTransaction().begin();
}
@After
public void rollbackTransaction() {
if (em.getTransaction().isActive())
em.getTransaction().rollback();
if (em.isOpen())
em.close();
}
@AfterClass
public static void closeEntityManagerFactory() {
emf.close();
}
@Test
public void dbTest() {
//fail("Not yet implemented");
Pdf testPdf = new Pdf();
testPdf.setName(randomPDFname);
testPdf.setSize(sysTime);
//check that testPDF is, indeed, not yet in the DB:
Query getPDF = em.createNamedQuery("Pdf.Queries.PdfByNameAndSize");
getPDF.setParameter("pdfname", testPdf.getName());
getPDF.setParameter("pdfsize", testPdf.getSize());
List foundPDFs = getPDF.getResultList();
assertTrue("Random PDF "+randomPDFname+" is already in the DB", foundPDFs == null || foundPDFs.size() == 0 );
//persist testPdf in the DB
em.persist(testPdf);
//em.flush();
Logger.getLogger(PdfConverter.class.getName()).log(Level.INFO, "Persisted testPdf");
//retrieve testPdf from the DB
Pdf thePDF = (Pdf) getPDF.getSingleResult();//trying to re-run the query
//and use it as a reference in a new XmlConversion
XmlConversion testXml = new XmlConversion();
testXml.setPdf2xml_sha1(randomGITversion);
testXml.setPdf(thePDF);
testXml.setXmlOutputSize(sysTime);
//verify there is no such XmlConversion
Query getXML = em.createNamedQuery("XmlConversion.Queries.XmlByPdfAndPdf2Xml");
getXML.setParameter("pdfname", testXml.getPdf());
getXML.setParameter("pdf2xml", testXml.getPdf2xml_sha1());
List foundXMLs = getXML.getResultList();
assertTrue("XmlConversion is already in the DB", foundXMLs == null || foundXMLs.size() == 0 );
//store XmlConversion in the DB
em.persist(testXml);
//em.flush();
//retrieve XmlConversion from the DB
foundXMLs = getXML.getResultList();
assertTrue("XmlConversion is not in the DB", foundXMLs.size() == 1);
Logger.getLogger(PdfConverter.class.getName()).log(Level.INFO, "PersistenceTest successful!");
}
}
ここにpersistence.xmlがあります：
<?xml version="1.0" encoding="UTF-8"?><persistence version="2.0" 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">
<persistence-unit name="pdfEx" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<!-->validation-mode>AUTO</validation-mode-->
<class>iw.pdfEx.persistence.Pdf</class>
<class>iw.pdfEx.persistence.XmlConversion</class>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.connection.username" value="icite"/>
<property name="hibernate.connection.password" value="${hpass}"/>
<property name="hibernate.connection.url" value="${hurl}"/>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
</properties>
</persistence-unit>
そして、ここにエラーメッセージがあります：
Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 1.933 sec <<< FAILURE! iw.pdfEx.PersistenceTest Time elapsed: 1.926 sec <<< ERROR! java.lang.NullPointerException: null
at org.hibernate.mapping.Constraint$ColumnComparator.compare(Constraint.java:134)
at org.hibernate.mapping.Constraint$ColumnComparator.compare(Constraint.java:130)
at java.util.TimSort.countRunAndMakeAscending(TimSort.java:324)
at java.util.TimSort.sort(TimSort.java:189)
at java.util.TimSort.sort(TimSort.java:173)
at java.util.Arrays.sort(Arrays.java:659)
at org.hibernate.mapping.Constraint.generateName(Constraint.java:82)
at org.hibernate.cfg.Configuration.buildUniqueKeyFromColumnNames(Configuration.java:1572)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1395)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1756)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:914)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:899)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:59)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at iw.pdfEx.PersistenceTest.createEntityManagerFactory(PersistenceTest.java:43) iw.pdfEx.PersistenceTest Time elapsed: 1.933 sec <<< ERROR! java.lang.NullPointerException: null
at iw.pdfEx.PersistenceTest.closeEntityManagerFactory(PersistenceTest.java:70)
テストの出力は次のとおりです。
Aug 04, 2013 10:38:09 PM iw.pdfEx.PersistenceTest createEntityManagerFactory
INFO: hibernate URL is jdbc:mysql://localhost:8600/icite Aug 04, 2013 10:38:09 PM iw.pdfEx.PersistenceTest createEntityManagerFactory
INFO: the path to pdf2xml is /home/nikolay/Documents/invoiceFairy/pdf2xml/pdftoxml.linux64.exe.1.2_7 Aug 04, 2013 10:38:09 PM org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.2.Final}
Aug 04, 2013 10:38:09 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.2.3.Final}
Aug 04, 2013 10:38:09 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Aug 04, 2013 10:38:09 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Aug 04, 2013 10:38:10 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!) Aug 04, 2013 10:38:10 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000115: Hibernate connection pool size: 20 Aug 04, 2013 10:38:10 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000006: Autocommit mode: true Aug 04, 2013 10:38:10 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:8600/icite] Aug 04, 2013 10:38:10 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000046: Connection properties: {user=icite, password=****, autocommit=true, release_mode=auto} Aug 04, 2013 10:38:10 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
何が悪いのか分かりますか？前述のように、一意の制約を追加するまでテストは機能していましたが、2 つのエンティティ間の結合列 (pdf_id) の名前をどこでも変更したと思います。どんな助けでも大歓迎です。