3
私は2つのオブジェクト、プログラムと分類、1つのプログラムと多くの分類関係を持っています。 は、ここに私の基準クエリです：余分な左外部結合を持つ休止条件のクエリ
Criteria crit2 = sessionFactory.getCurrentSession()
.createCriteria(Program.class)
.add(Restrictions.eq("code", input.getCode()))
.createAlias("classifications", "cl")
.add(Restrictions.eq("cl.id", 3249023L));
List<Program> programs2 = crit2.list();
、それが生成するSQLは、追加の左外側には、私はの目的を理解することはできませんどの参加していますか？
Hibernate:
select
this_.id as id16_2_,
this_.created as created16_2_,
this_.modified as modified16_2_,
this_.version as version16_2_,
this_.active as active16_2_,
this_.adminProgramId as adminPro6_16_2_,
this_.code as code16_2_,
this_.deletable as deletable16_2_,
this_.desciption as desciption16_2_,
this_.discontinued as discont10_16_2_,
this_.effectiveDate as effecti11_16_2_,
this_.expirationDate as expirat12_16_2_,
this_.name as name16_2_,
this_.programVersion as program14_16_2_,
cl1_.id as id1_0_,
cl1_.created as created1_0_,
cl1_.modified as modified1_0_,
cl1_.version as version1_0_,
cl1_.causeOfLoss as causeOfL5_1_0_,
cl1_.code as code1_0_,
cl1_.description as descript7_1_0_,
cl1_.lobCode as lobCode1_0_,
cl1_.lobName as lobName1_0_,
cl1_.premiumBaseCode as premium10_1_0_,
cl1_.premiumBaseDesc as premium11_1_0_,
cl1_.premiumBaseValue as premium12_1_0_,
cl1_.program_id as program13_1_0_,
program4_.id as id16_1_,
program4_.created as created16_1_,
program4_.modified as modified16_1_,
program4_.version as version16_1_,
program4_.active as active16_1_,
program4_.adminProgramId as adminPro6_16_1_,
program4_.code as code16_1_,
program4_.deletable as deletable16_1_,
program4_.desciption as desciption16_1_,
program4_.discontinued as discont10_16_1_,
program4_.effectiveDate as effecti11_16_1_,
program4_.expirationDate as expirat12_16_1_,
program4_.name as name16_1_,
program4_.programVersion as program14_16_1_
from
Program this_
inner join
Classification cl1_
on this_.id=cl1_.program_id
left outer join
Program program4_
on cl1_.program_id=program4_.id
where
this_.code=?
and cl1_.id=?
このブロックが存在する理由を誰もが知っています：
left outer join
Program program4_
on cl1_.program_id=program4_.id
私が参加し、パフォーマンスに影響を与えるなどの追加それを取り除くことができますか。私はここでは3.6.8
を休止状態使用しています
はProgramクラスである：ここで
package com.sg.pds.domain.entity.ratedelivery;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.CollectionTable;
import javax.persistence.Column;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlTransient;
import org.hibernate.annotations.Index;
@XmlAccessorType(XmlAccessType.FIELD)
@Entity
public class Program extends BaseEntity {
private String code;
private String desciption;
private String name;
@XmlElement(name="classification") @XmlElementWrapper(name = "classifications")
private Set<Classification> classifications = new HashSet<Classification>();
@XmlElement(name="debitCredit") @XmlElementWrapper(name = "debitCredits")
private Set<DebitCredit> debitCredits = new HashSet<DebitCredit>();
@XmlElement(name="minPremium") @XmlElementWrapper(name = "minPremiums")
private Set<DebitCredit> minPremiums = new HashSet<DebitCredit>();
@XmlElement(name="deductible") @XmlElementWrapper(name = "deductibles")
private Set<Deductible> deductibles = new HashSet<Deductible>();
@XmlElement(name="optionalCoverage") @XmlElementWrapper(name = "optionalCoverages")
private Set<OptionalCoverage> optionalCoverages = new HashSet<OptionalCoverage>();
@XmlTransient
private Date expirationDate;
@XmlTransient
private Date effectiveDate;
@XmlTransient
private String programVersion;
@XmlTransient
private Boolean discontinued;
@XmlTransient
private Boolean active;
@XmlTransient
private Boolean deletable;
@XmlElement(name="company") @XmlElementWrapper(name = "companies")
private Set<String> companies = new HashSet<String>();
@XmlTransient
private Set<Territory> territories = new HashSet<Territory>();
@XmlTransient
private String adminProgramId; // primary key from program table in admin db
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="program", fetch=FetchType.LAZY)
public Set<DebitCredit> getMinPremiums() {
return minPremiums;
}
public void setMinPremiums(Set<DebitCredit> minPremiums) {
this.minPremiums = minPremiums;
}
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="program", fetch=FetchType.LAZY)
@OrderBy("lobCode ASC")
public Set<OptionalCoverage> getOptionalCoverages() {
return optionalCoverages;
}
public void setOptionalCoverages(Set<OptionalCoverage> optionalCoverages) {
this.optionalCoverages = optionalCoverages;
}
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="program", fetch=FetchType.LAZY)
@OrderBy("lobCode ASC")
public Set<Deductible> getDeductibles() {
return deductibles;
}
public void setDeductibles(Set<Deductible> deductibles) {
this.deductibles = deductibles;
}
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="program", fetch=FetchType.LAZY)
@OrderBy("name ASC")
public Set<Territory> getTerritories() {
return territories;
}
public void setTerritories(Set<Territory> territories) {
this.territories = territories;
}
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="program", fetch=FetchType.LAZY)
@OrderBy("name ASC")
public Set<DebitCredit> getDebitCredits() {
return debitCredits;
}
public void setDebitCredits(Set<DebitCredit> debitCredits) {
this.debitCredits = debitCredits;
}
@ElementCollection
@CollectionTable(name="Company", [email protected](name="program_id"))
@Column(name="name", length=255)
public Set<String> getCompanies() {
return companies;
}
public void setCompanies(Set<String> companies) {
this.companies = companies;
}
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="program", fetch=FetchType.LAZY)
@OrderBy("code ASC")
public Set<Classification> getClassifications() {
return classifications;
}
public void setClassifications(Set<Classification> classifications) {
this.classifications = classifications;
}
public String getAdminProgramId() {
return adminProgramId;
}
public void setAdminProgramId(String adminProgramId) {
this.adminProgramId = adminProgramId;
}
@Column(length=255)
public String getProgramVersion() {
return programVersion;
}
public void setProgramVersion(String programVersion) {
this.programVersion = programVersion;
}
public Boolean getDiscontinued() {
return discontinued;
}
public void setDiscontinued(Boolean discontinued) {
this.discontinued = discontinued;
}
public Boolean getActive() {
return active;
}
public void setActive(Boolean active) {
this.active = active;
}
public Boolean getDeletable() {
return deletable;
}
public void setDeletable(Boolean deletable) {
this.deletable = deletable;
}
@Column(nullable = false)
@Temporal(TemporalType.DATE)
@Index(name="Program_EffectiveDate_idx")
public Date getEffectiveDate() {
return effectiveDate;
}
public void setEffectiveDate(Date effectiveDate) {
this.effectiveDate = effectiveDate;
}
@Temporal(TemporalType.DATE)
public Date getExpirationDate() {
return expirationDate;
}
public void setExpirationDate(Date expirationDate) {
this.expirationDate = expirationDate;
}
@Column(nullable = false, length=255)
@Index(name="Program_Code_idx")
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
@Column(length=255)
public String getDesciption() {
return desciption;
}
public void setDesciption(String desciption) {
this.desciption = desciption;
}
@Column(length=255)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public boolean equals(Object obj) {
if((obj != null) && (obj.getClass() == this.getClass())) {
Long objId = ((Program)obj).getId();
if(objId != null && objId.equals(this.getId())){
return true;
}
}
return false;
}
}
は、分類である：ここでは
package com.sg.pds.domain.entity.ratedelivery;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.ElementCollection;
import javax.persistence.CollectionTable;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.JoinColumn;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;
import javax.xml.bind.annotation.XmlType;
import org.hibernate.annotations.Index;
@XmlAccessorType(XmlAccessType.FIELD)
@Entity
public class Classification extends BaseEntity{
//@XmlElement(name="code")
private String code;
private String description;
@XmlElement(name="liabilityLimit") @XmlElementWrapper(name = "liabilityLimits")
private Set<LiabilityLimit> liabilityLimits = new HashSet<LiabilityLimit>();
@XmlTransient
private Program program;
private String lobName;
private String lobCode;
private String premiumBaseValue;
private String premiumBaseDesc;
private String premiumBaseCode;
private String causeOfLoss;
@XmlElement(name="coverage") @XmlElementWrapper(name = "coverages")
private Set<String> coverages = new HashSet<String>();
//@XmlTransient
//private Set<Rate> rates = new HashSet<Rate>();
//@XmlTransient
//private Set<Criterion> criteria = new HashSet<Criterion>();
@XmlElement(name="territory") @XmlElementWrapper(name = "territories")
private Set<Territory> territories = new HashSet<Territory>();
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="classification")
public Set<Territory> getTerritories() {
return territories;
}
public void setTerritories(Set<Territory> territories) {
this.territories = territories;
}
//@OneToMany(mappedBy="classification")
//public Set<Criterion> getCriteria() {
// return criteria;
//}
//public void setCriteria(Set<Criterion> criteria) {
// this.criteria = criteria;
//}
//@OneToMany(mappedBy="classification")
//public Set<Rate> getRates() {
// return rates;
//}
//public void setRates(Set<Rate> rates) {
// this.rates = rates;
//}
@Column(length=255)
public String getPremiumBaseValue() {
return premiumBaseValue;
}
public void setPremiumBaseValue(String premiumBaseValue) {
this.premiumBaseValue = premiumBaseValue;
}
@Column(length=255)
public String getPremiumBaseDesc() {
return premiumBaseDesc;
}
public void setPremiumBaseDesc(String premiumBaseDesc) {
this.premiumBaseDesc = premiumBaseDesc;
}
@Column(length=255)
public String getPremiumBaseCode() {
return premiumBaseCode;
}
public void setPremiumBaseCode(String premiumBaseCode) {
this.premiumBaseCode = premiumBaseCode;
}
@Column(length=255)
public String getCauseOfLoss() {
return causeOfLoss;
}
public void setCauseOfLoss(String causeOfLoss) {
this.causeOfLoss = causeOfLoss;
}
@ElementCollection
@CollectionTable(name="Coverage", [email protected](name="classification_id"))
@Column(name="name", length=255)
public Set<String> getCoverages() {
return coverages;
}
public void setCoverages(Set<String> coverages) {
this.coverages = coverages;
}
@ManyToOne
public Program getProgram() {
return program;
}
public void setProgram(Program program) {
this.program = program;
}
@OneToMany(cascade = {CascadeType.ALL}, mappedBy="classification")
@OrderBy("type ASC")
public Set<LiabilityLimit> getLiabilityLimits() {
return liabilityLimits;
}
public void setLiabilityLimits(Set<LiabilityLimit> liabilityLimits) {
this.liabilityLimits = liabilityLimits;
}
@Column(length=255)
@Index(name="Classification_Code_idx")
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
@Column(length=255)
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getLobName() {
return lobName;
}
public void setLobName(String lobName) {
this.lobName = lobName;
}
public String getLobCode() {
return lobCode;
}
public void setLobCode(String lobCode) {
this.lobCode = lobCode;
}
public boolean equals(Object obj) {
if((obj != null) && (obj.getClass() == this.getClass())) {
Long objId = ((Classification)obj).getId();
if(objId != null && objId.equals(this.getId())){
return true;
}
}
return false;
}
}
私のセッションファクトリ設定されています
<bean id="sessionFactoryTester" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSourceLoader" />
<property name="packagesToScan" value="com.sg.pds.domain.entity" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.jdbc.fetch_size">0</prop>
<!-- Enable Hibernate's automatic session context management -->
<prop key="current_session_context_class">jta</prop>
<!--
<prop key="hibernate.hbm2ddl.auto">validate</prop>
-->
</props>
</property>
</bean>
どのバージョンのHibernateを使用していますか、それらの2つのエンティティのコードとマッピングは何ですか？ –