Asset、pstupdatefile 和 checkedouthistory 之间的实体关系当尝试加入这些时，我得到了加入所需的错误消息路径
here am adding my entities and db query
@Entity
@Table(name = "POST_UPDATE_FILE")
public class PostUpdateFile implements java.io.Serializable {
private int postUpdateFileId;
private Reason reasonByReasonForReprocessing;
private Reason reasonByReasonForFailure;
private Package softwarePackage;
private Asset asset;
private String upgradeStatus;
private boolean manuallyProcessed;
private String eventLogfileId;
private String comment;
private boolean operationManualHandover;
private Date updatedOn;
private String updatedBy;
private Date processedOn;
private String processedBy;
private String fileSource;
private String previousVersion;
private String currentVersion;
private Set<PostUpdateRetryCount> postUpdateRetryCounts = new HashSet<>(0);
@Id
@Column(name = "POST_UPDATE_FILE_ID", unique = true, nullable = false)
public int getPostUpdateFileId() {
return this.postUpdateFileId;
}
public void setPostUpdateFileId(int postUpdateFileId) {
this.postUpdateFileId = postUpdateFileId;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "REASON_FOR_REPROCESSING")
public Reason getReasonByReasonForReprocessing() {
return this.reasonByReasonForReprocessing;
}
public void setReasonByReasonForReprocessing(Reason reasonByReasonForReprocessing) {
this.reasonByReasonForReprocessing = reasonByReasonForReprocessing;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "REASON_FOR_FAILURE")
public Reason getReasonByReasonForFailure() {
return this.reasonByReasonForFailure;
}
public void setReasonByReasonForFailure(Reason reasonByReasonForFailure) {
this.reasonByReasonForFailure = reasonByReasonForFailure;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="PACKAGE_ID", nullable=false)
public Package getSoftwarePackage() {
return softwarePackage;
}
public void setSoftwarePackage(Package softwarePackage) {
this.softwarePackage = softwarePackage;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "ASSET_SERIAL_NUMBER", nullable = false)
public Asset getAsset() {
return this.asset;
}
public void setAsset(Asset asset) {
this.asset = asset;
}
@Column(name = "UPGRADE_STATUS", length = 12)
public String getUpgradeStatus() {
return this.upgradeStatus;
}
public void setUpgradeStatus(String upgradeStatus) {
this.upgradeStatus = upgradeStatus;
}
@Column(name = "MANUALLY_PROCESSED", nullable = false)
public boolean isManuallyProcessed() {
return this.manuallyProcessed;
}
public void setManuallyProcessed(boolean manuallyProcessed) {
this.manuallyProcessed = manuallyProcessed;
}
@Column(name = "COMMENT", length = 512)
public String getComment() {
return this.comment;
}
public void setComment(String comment) {
this.comment = comment;
}
@Column(name = "OPERATION_MANUAL_HANDOVER", nullable = false)
public boolean isOperationManualHandover() {
return this.operationManualHandover;
}
public void setOperationManualHandover(boolean operationManualHandover) {
this.operationManualHandover = operationManualHandover;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "UPDATED_ON", nullable = false, length = 19)
public Date getUpdatedOn() {
return this.updatedOn;
}
public void setUpdatedOn(Date updatedOn) {
this.updatedOn = updatedOn;
}
@Column(name = "UPDATED_BY", nullable = false, length = 12)
public String getUpdatedBy() {
return this.updatedBy;
}
public void setUpdatedBy(String updatedBy) {
this.updatedBy = updatedBy;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "PROCESSED_ON", nullable = false, length = 19)
public Date getProcessedOn() {
return this.processedOn;
}
public void setProcessedOn(Date processedOn) {
this.processedOn = processedOn;
}
@Column(name = "PROCESSED_BY", nullable = false, length = 12)
public String getProcessedBy() {
return this.processedBy;
}
public void setProcessedBy(String processedBy) {
this.processedBy = processedBy;
}
@Column(name = "EVENT_LOGFILE_ID", length = 30)
public String getEventLogfileId() {
return this.eventLogfileId;
}
public void setEventLogfileId(String eventLogfileId) {
this.eventLogfileId = eventLogfileId;
}
@Column(name = "FILE_SOURCE", length = 10)
public String getFileSource() {
return this.fileSource;
}
public void setFileSource(String fileSource) {
this.fileSource = fileSource;
}
@Column(name = "PREVIOUS_VERSION", length = 16)
public String getPreviousVersion() {
return this.previousVersion;
}
public void setPreviousVersion(String previousVersion) {
this.previousVersion = previousVersion;
}
@Column(name = "CURRENT_VERSION", length = 16)
public String getCurrentVersion() {
return this.currentVersion;
}
public void setCurrentVersion(String currentVersion) {
this.currentVersion = currentVersion;
}
@OneToMany(fetch = FetchType.LAZY, mappedBy = "postUpdateFile")
public Set<PostUpdateRetryCount> getPostUpdateRetryCounts() {
return this.postUpdateRetryCounts;
}
public void setPostUpdateRetryCounts(Set<PostUpdateRetryCount> postUpdateRetryCounts) {
this.postUpdateRetryCounts = postUpdateRetryCounts;
}
}
@Entity
@Table(name = "CHECK_OUT_HISTORY")
public class CheckOutHistory implements java.io.Serializable {
private int checkOutHistoryId;
private Package softwarePackage;
private User user;
private Asset asset;
private Date checkedOutOn;
@Id
@Column(name = "CHECK_OUT_HISTORY_ID", unique = true, nullable = false)
public int getCheckOutHistoryId() {
return this.checkOutHistoryId;
}
public void setCheckOutHistoryId(int checkOutHistoryId) {
this.checkOutHistoryId = checkOutHistoryId;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="PACKAGE_ID", nullable=false)
public Package getSoftwarePackage() {
return softwarePackage;
}
public void setSoftwarePackage(Package softwarePackage) {
this.softwarePackage = softwarePackage;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "CHECKED_OUT_BY", nullable = false)
public User getUser() {
return this.user;
}
public void setUser(User user) {
this.user = user;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "ASSET_SERIAL_NUMBER", nullable = false)
public Asset getAsset() {
return this.asset;
}
public void setAsset(Asset asset) {
this.asset = asset;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "CHECKED_OUT_ON", nullable = false, length = 19)
public Date getCheckedOutOn() {
return this.checkedOutOn;
}
public void setCheckedOutOn(Date checkedOutOn) {
this.checkedOutOn = checkedOutOn;
}
}
@Entity
@Table(name = "ASSET", uniqueConstraints = @UniqueConstraint(columnNames = "SYSTEM_ID"))
public class Asset implements java.io.Serializable {
private String assetSerialNumber;
private Account account;
private Country country;
private User energySalesPerson;
private Product product;
private Status status;
private String softwareVersion;
private boolean checkedOut;
private int systemId;
private Date lastUpdatedOn;
private String lastUpdatedBy;
private String modifiedAttributes;
private String checkedOutBy;
private Integer shipLocationId;
private String sourceCountry;
private AccountLocation accountLocation;
private Set<CheckInHistory> checkInHistories = new HashSet<>(0);
private Set<CheckOutHistory> checkOutHistories = new HashSet<>(0);
private Set<PostUpdateFile> postUpdateFiles = new HashSet<>(0);
private Set<ReassignedAsset> reassignedAssets = new HashSet<>(0);
@Id
@Column(name = "ASSET_SERIAL_NUMBER", unique = true, nullable = false, length = 16)
public String getAssetSerialNumber() {
return this.assetSerialNumber;
}
public void setAssetSerialNumber(String assetSerialNumber) {
this.assetSerialNumber = assetSerialNumber;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "ACCOUNT_ID")
public Account getAccount() {
return this.account;
}
public void setAccount(Account account) {
this.account = account;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "ENERGY_SALES_PERSON")
public User getEnergySalesPerson() {
return energySalesPerson;
}
public void setEnergySalesPerson(User energySalesPerson) {
this.energySalesPerson = energySalesPerson;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "SIEBEL_PRODUCT_CODE")
public Product getProduct() {
return this.product;
}
public void setProduct(Product product) {
this.product = product;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "LAST_UPDATED_STATUS")
public Status getStatus() {
return this.status;
}
public void setStatus(Status status) {
this.status = status;
}
@Column(name = "SOFTWARE_VERSION", nullable = false, length = 16)
public String getSoftwareVersion() {
return this.softwareVersion;
}
public void setSoftwareVersion(String softwareVersion) {
this.softwareVersion = softwareVersion;
}
@Column(name = "CHECKED_OUT", nullable = false)
public boolean isCheckedOut() {
return this.checkedOut;
}
public void setCheckedOut(boolean checkedOut) {
this.checkedOut = checkedOut;
}
@Column(name = "SYSTEM_ID", unique = true, nullable = false)
public int getSystemId() {
return this.systemId;
}
public void setSystemId(int systemId) {
this.systemId = systemId;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "LAST_UPDATED_ON", nullable = false, length = 19)
public Date getLastUpdatedOn() {
return this.lastUpdatedOn;
}
public void setLastUpdatedOn(Date lastUpdatedOn) {
this.lastUpdatedOn = lastUpdatedOn;
}
@Column(name = "LAST_UPDATED_BY", nullable = false, length = 12)
public String getLastUpdatedBy() {
return this.lastUpdatedBy;
}
public void setLastUpdatedBy(String lastUpdatedBy) {
this.lastUpdatedBy = lastUpdatedBy;
}
@Column(name = "MODIFIED_ATTRIBUTES", length = 100)
public String getModifiedAttributes() {
return this.modifiedAttributes;
}
public void setModifiedAttributes(String modifiedAttributes) {
this.modifiedAttributes = modifiedAttributes;
}
@Column(name = "CHECKED_OUT_BY", length = 12)
public String getCheckedOutBy() {
return this.checkedOutBy;
}
public void setCheckedOutBy(String checkedOutBy) {
this.checkedOutBy = checkedOutBy;
}
@OneToMany(fetch = FetchType.LAZY, mappedBy = "asset")
public Set<CheckInHistory> getCheckInHistories() {
return this.checkInHistories;
}
public void setCheckInHistories(Set<CheckInHistory> checkInHistories) {
this.checkInHistories = checkInHistories;
}
@OneToMany(fetch = FetchType.LAZY, mappedBy = "asset")
public Set<CheckOutHistory> getCheckOutHistories() {
return this.checkOutHistories;
}
public void setCheckOutHistories(Set<CheckOutHistory> checkOutHistories) {
this.checkOutHistories = checkOutHistories;
}
@OneToMany(fetch = FetchType.LAZY, mappedBy = "asset")
public Set<PostUpdateFile> getPostUpdateFiles() {
return this.postUpdateFiles;
}
public void setPostUpdateFiles(Set<PostUpdateFile> postUpdateFiles) {
this.postUpdateFiles = postUpdateFiles;
}
@OneToMany(fetch = FetchType.LAZY, mappedBy = "asset")
public Set<ReassignedAsset> getReassignedAssets() {
return this.reassignedAssets;
}
public void setReassignedAssets(Set<ReassignedAsset> reassignedAssets) {
this.reassignedAssets = reassignedAssets;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "COUNTRY_CODE")
public Country getCountry() {
return this.country;
}
public void setCountry(Country country) {
this.country = country;
}
@Column(name = "SHIP_LOCATION_ID")
public Integer getShipLocationId() {
return this.shipLocationId;
}
public void setShipLocationId(Integer shipLocationId) {
this.shipLocationId = shipLocationId;
}
@Column(name = "SOURCE_COUNTRY", length = 32)
public String getSourceCountry() {
return this.sourceCountry;
}
public void setSourceCountry(String sourceCountry) {
this.sourceCountry = sourceCountry;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "ASSET_LOCATION_ID")
public AccountLocation getAccountLocation() {
return this.accountLocation;
}
public void setAccountLocation(AccountLocation accountLocation) {
this.accountLocation = accountLocation;
}
}
检索数据的查询。它总是返回 org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join!
select puf.processedOn,coh.checkedOutOn from Asset a inner join PostUpdateFile puf on a.assetSerialNumber=puf.assetSerialNumber inner join CheckOutHistory coh on a.assetSerialNumber=coh.assetSerialNumber where a.assetSerialNumber=:assetno
最佳答案
org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join!
上面的异常是关于 join 应该使用映射中定义的从一个实体到另一个实体的 path。
您的实体显示 CheckOutHistory 和 ProcessUpdateFile 是 ASSET 的集合成员。
代替
from Asset a
inner join processupdatefile puf
我们需要从 ASSET 到 ProcessUpdateFile 的路径，即
from Asset a
inner join a.postUpdateFiles puf
HQL 应该是这样的:
select
puf.processedOn,
coh.checkedOutOn
from Asset a
inner join a.postUpdateFiles puf
on a.assetSerialNumber = puf.assetSerialNumber
inner join a.checkOutHistories coh
on a.assetSerialNumber = coh.assetSerialNumber
where a.assetSerialNumber =: assetno
关于java - 加入的预期路径，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38116323/