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    數據加載中……
    ejb 3.0 具名查詢和原生查詢的寫法列子。
    package com.vsc.ejb.persistence.query;

    import java.io.Serializable;
    import java.sql.Timestamp;

    import javax.persistence.CascadeType;
    import javax.persistence.ColumnResult;
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;
    import javax.persistence.JoinColumn;
    import javax.persistence.ManyToOne;
    import javax.persistence.NamedNativeQueries;
    import javax.persistence.NamedNativeQuery;
    import javax.persistence.NamedQueries;
    import javax.persistence.NamedQuery;
    import javax.persistence.SqlResultSetMapping;
    import javax.persistence.SqlResultSetMappings;
    import javax.persistence.Table;
    import javax.persistence.TableGenerator;

    import com.clindataware.cdms.ejb.persistence.study.Study;
    import com.clindataware.cdms.ejb.persistence.study.Subject;

    @Entity
    @Table(name = "cdms_query")
    //這里可以放多個具名查詢,有多個具名查詢必須要用到NamedQueries。
    @NamedQueries( {
            @NamedQuery(name = "Query.statisticByItem", query = "select count(query.itemoid) as sum,query.eventpath,query.formpath,query.itemoid,query.isprocessed"
                    + "  from Query query "
                    + " where query.study.id=:studyid and query.isdisable='false'"
                    + " group by query.eventpath,query.formpath,query.itemoid,query.isprocessed"),
            // sum, pid, pname, isp?
            @NamedQuery(name = "Query.statisticByInvestigator", query = "select count(query.participantid) as sum,user.fullname,query.participantid,query.isprocessed"
                    + "  from Query query,Participant part,User user"
                    + " where query.study.id=:studyid "
                    + "   and part.studyid=:studyid "
                    + "   and query.participantid=part.user.id "
                    + "   and part.user.id=user.id "
                    + "   and query.isdisable='false' "
                    + " group by query.participantid,query.isprocessed,user.fullname "),
    })
    //這里可以放多個原生的具名查詢,有多個原生的具名查詢必須要用到NamedNativeQueries。
    @NamedNativeQueries({
            // sum, pid, pname, isp?
            @NamedNativeQuery(name = "Query.statisticBySite", query = "select count(b.id) as sum,b.name,b.id,a.isprocessed from " +
                                "(" +
                                " select query.isprocessed,org.siteid as org_siteid,subject.siteid as sub_siteid" +
                                " from cdms_Query query, cdms_Organization_Study org, cdms_Subject subject" +
                                " where query.studyid=:studyid and query.studyid=org.studyid " +
                                " and query.subjectid=subject.id and query.isdisable='false'" +
                                ") a" +
                                " right join"+
                                " (select distinct site.* from cdms_Query query, cdms_Organization site, cdms_Organization_Study org, cdms_Subject subject" +
                                " where query.studyid=:studyid and site.id=org.siteid and query.studyid=org.studyid " +
                                " and site.category=1 and site.id=subject.siteid" +
                                " ) b on (a.org_siteid = b.id and a.sub_siteid = b.id) " +
                                " group by b.id, b.name, a.isprocessed",
                                resultSetMapping = "Query.statisticBySiteMapping"),
            // sum, qtype, code, isp?
            @NamedNativeQuery(name = "Query.statisticByCause", query = "select count(query.id) as sum,qtype.name as name,qtype.code as code,query.isprocessed as isprocessed from cdms_querytype qtype left join cdms_query query on ( query.studyid = :studyid  and query.querytype = qtype.code  and query.isdisable = 'false' ) group by qtype.name,qtype.code,query.isprocessed",
                                resultSetMapping = "Query.statisticByCauseMapping")
    })
    //SqlResultSetMapping這定結果集返回的實體類型或標量值。
    @SqlResultSetMappings({
       
            @SqlResultSetMapping(name = "Query.statisticByCauseMapping", columns = {
                    @ColumnResult(name = "sum"), @ColumnResult(name = "name"),
                    @ColumnResult(name = "code"), @ColumnResult(name = "isprocessed") }),
            @SqlResultSetMapping(name = "Query.statisticBySiteMapping", columns = {
                    @ColumnResult(name = "sum"), @ColumnResult(name = "name"),
                    @ColumnResult(name = "id"), @ColumnResult(name = "isprocessed") })
    })

    public class Query implements Serializable {

        private static final long serialVersionUID = 5025535683766463922L;

        private Long id;

        private String correctedvalue;

        private String correctedcause;

        private Boolean isdisable;

        private Long lastmodifierid;

        private String queryvalue;

        private Subject subject;

        private Integer querytype;

        private Long creatorid;

        private Study study;

        private Boolean isprocessed;

        private Timestamp lastmodifydate;

        private String querynumber;

        private Long participantid;

        private Boolean iscorrected;

        private Timestamp createdate;

        private String querycause;

        private Integer pagenumber;

        private String itemoid;

        private String itemname;

        private String iteminformation;

        private String eventpath;

        private String formpath;

        private Timestamp enddate;

        public Query() {
            super();
        }

        @TableGenerator(name = "queryGen", table = "cdms_seq", pkColumnName = "pkvalue", valueColumnName = "value", pkColumnValue = "cdms_query", allocationSize = 1)
        @Id
        @GeneratedValue(strategy = GenerationType.TABLE, generator = "queryGen")
        public Long getId() {
            return this.id;
        }

        public void setId(Long id) {
            this.id = id;
        }

        public String getCorrectedvalue() {
            return this.correctedvalue;
        }

        public void setCorrectedvalue(String correctedvalue) {
            this.correctedvalue = correctedvalue;
        }

        public String getCorrectedcause() {
            return this.correctedcause;
        }

        public void setCorrectedcause(String correctedcause) {
            this.correctedcause = correctedcause;
        }

        public Boolean getIsdisable() {
            return this.isdisable;
        }

        public void setIsdisable(Boolean isdisable) {
            this.isdisable = isdisable;
        }

        public Long getLastmodifierid() {
            return this.lastmodifierid;
        }

        public void setLastmodifierid(Long lastmodifierid) {
            this.lastmodifierid = lastmodifierid;
        }

        public String getQueryvalue() {
            return this.queryvalue;
        }

        public void setQueryvalue(String queryvalue) {
            this.queryvalue = queryvalue;
        }

        @ManyToOne(cascade = CascadeType.REFRESH)
        @JoinColumn(name = "subjectid", referencedColumnName = "id")
        public Subject getSubject() {
            return this.subject;
        }

        public void setSubject(Subject subject) {
            this.subject = subject;
        }

        public Integer getQuerytype() {
            return this.querytype;
        }

        public void setQuerytype(Integer querytype) {
            this.querytype = querytype;
        }

        public Long getCreatorid() {
            return this.creatorid;
        }

        public void setCreatorid(Long creatorid) {
            this.creatorid = creatorid;
        }

        @ManyToOne(cascade = CascadeType.REFRESH)
        @JoinColumn(name = "studyid", referencedColumnName = "id")
        public Study getStudy() {
            return this.study;
        }

        public void setStudy(Study study) {
            this.study = study;
        }

        public Boolean getIsprocessed() {
            return this.isprocessed;
        }

        public void setIsprocessed(Boolean isprocessed) {
            this.isprocessed = isprocessed;
        }

        public Timestamp getLastmodifydate() {
            return this.lastmodifydate;
        }

        public void setLastmodifydate(Timestamp lastmodifydate) {
            this.lastmodifydate = lastmodifydate;
        }

        public String getQuerynumber() {
            return this.querynumber;
        }

        public void setQuerynumber(String querynumber) {
            this.querynumber = querynumber;
        }

        public Long getParticipantid() {
            return this.participantid;
        }

        public void setParticipantid(Long participantid) {
            this.participantid = participantid;
        }

        public Boolean getIscorrected() {
            return this.iscorrected;
        }

        public void setIscorrected(Boolean iscorrected) {
            this.iscorrected = iscorrected;
        }

        public Timestamp getCreatedate() {
            return this.createdate;
        }

        public void setCreatedate(Timestamp createdate) {
            this.createdate = createdate;
        }

        public String getQuerycause() {
            return this.querycause;
        }

        public void setQuerycause(String querycause) {
            this.querycause = querycause;
        }

        public String getIteminformation() {
            return iteminformation;
        }

        public void setIteminformation(String iteminformation) {
            this.iteminformation = iteminformation;
        }

        public String getItemname() {
            return itemname;
        }

        public void setItemname(String itemname) {
            this.itemname = itemname;
        }

        public String getItemoid() {
            return itemoid;
        }

        public void setItemoid(String itemoid) {
            this.itemoid = itemoid;
        }

        public Integer getPagenumber() {
            return pagenumber;
        }

        public void setPagenumber(Integer pagenumber) {
            this.pagenumber = pagenumber;
        }

        /**
         * @return Returns the eventpath.
         */
        public String getEventpath() {
            return eventpath;
        }

        /**
         * @param eventpath
         *            The eventpath to set.
         */
        public void setEventpath(String eventpath) {
            this.eventpath = eventpath;
        }

        /**
         * @return Returns the formpath.
         */
        public String getFormpath() {
            return formpath;
        }

        /**
         * @param formpath
         *            The formpath to set.
         */
        public void setFormpath(String formpath) {
            this.formpath = formpath;
        }

        public Timestamp getEnddate() {
            return enddate;
        }

        public void setEnddate(Timestamp enddate) {
            this.enddate = enddate;
        }

    }


    posted on 2008-03-14 09:34 java flex 結合 閱讀(1445) 評論(3)  編輯  收藏

    評論

    # re: ejb 3.0 具名查詢和原生查詢的寫法列子。 2008-03-14 12:30 千里冰封

    應該再講講它們的用法以及差異啊
      回復  更多評論    

    # re: ejb 3.0 具名查詢和原生查詢的寫法列子。 2008-03-17 13:35 java flex 結合

    具名查詢 - 就是預先定義好ejb ql,然后在創建查詢時通過名稱來引用他們。為了能在不同的場合復用,你會在java中定義String類型的常量,同樣為了復用,你也可以預定義查詢。如果統一在一處定義好查詢,你就可以根據需要隨時對其進行調用好修改。
      回復  更多評論    

    # re: ejb 3.0 具名查詢和原生查詢的寫法列子。 2008-03-17 13:43 java flex 結合

    ejb ql語法豐富,應該能滿足絕大部分的查詢要求。不過有時候,可能你想用一下只有某家廠商的數據庫才提供的Native功能。這是我們就會用到原生查詢(Native Query)。
      回復  更多評論    

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