hibernate多表連線 查詢的解決方案

2022-09-13 12:51:09 字數 2830 閱讀 5232

大家在用hibernate的時候總會遇到多表連線的查詢,遇到這種問題 總是各種糾結。

方案1:建立檢視 ,事先在資料庫裡面建立檢視。然後建立這個檢視的實體類,指定乙個主鍵。然後建立這個檢視的查詢。

方案2:給實體類加臨時屬性hql查詢補充。

上**:

實體類:

@entity

@table(name = "flow_ru_info")

public class flowruinfo implements j**a.io.serializable {

// fields

private string id;

private string deptid;

private string processinstanceid;

private string content;

private string creator;

private date createtime;

private string flowtype;

private string flowcode;

private string formid;

private string state;

private string currentuserid;

private string pflowtype;

private string formno;

//臨時屬性

private string task;

private string lastaudiuser;

private string nextuser;

private string username;

private string deptname;

// constructors

/** default constructor */

public flowruinfo() {

public flowruinfo(string id, string deptid, string processinstanceid,

string content, string creator, date createtime, string flowtype,

string flowcode, string formid, string state, string currentuserid,

string pflowtype, string formno, string task, string lastaudiuser,

string nextuser, string username, string deptname) {

super();

this.id = id;

this.deptid = deptid;

this.processinstanceid = processinstanceid;

this.content = content;

this.creator = creator;

this.createtime = createtime;

this.flowtype = flowtype;

this.flowcode = flowcode;

this.formid = formid;

this.state = state;

this.currentuserid = currentuserid;

this.pflowtype = pflowtype;

this.formno = formno;

this.task = task;

this.lastaudiuser = lastaudiuser;

this.nextuser = nextuser;

this.username = username;

this.deptname = deptname;

// property accessors

@genericgenerator(name = "generator", strategy = "uuid.hex")

@id@generatedvalue(generator = "generator")

@column(name = "id", unique = true, nullable = false, length = 32)

public string getid() {

return this.id;

public void setid(string id) {

this.id = id;

@column(name = "deptid", length = 32)

public string getdeptid() {

return this.deptid;

public void setdeptid(string deptid) {

this.deptid = deptid;

@column(name = "processinstanceid", length = 100)

public string getprocessinstanceid() {

return this.processinstanceid;

public void setprocessinstanceid(string processinstanceid) {

this.processinstanceid = processinstanceid;

@column(name = "content", length = 800)

public string getcontent() {

return this.content;

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