Acitiviti工作流实现查询待办、已办、办结、撤销等任务

1.首先需要建立几张视图

    由于数据库方言不一样，以及系统的用户角色表也有所差异，根据自己需求改动SQL文件

1.1 V_ACTLIST 任务视图表（用于查询单个审批流程的具体过程以及意见）

SELECT
	T.NAME_ AS NAME,
	T.END_TIME_ AS BLTIME,
	U.USERNAME AS USERNAME,
	T.PROC_INST_ID_ AS procInstId,
	C.MESSAGE_ AS clyj,
	T.START_TIME_,
	D.DeptName
FROM
	ASSETSMETADATA.ACT_HI_TASKINST T
LEFT OUTER JOIN 
(SELECT * FROM IPRIVILAGEMETADATA.USERS)U 
ON T.ASSIGNEE_ = U.PKID
LEFT OUTER JOIN 
(SELECT * FROM IPRIVILAGEMETADATA.DEPARTMENTS)D 
ON D.Pkid = U.DeptId
LEFT OUTER JOIN 
(SELECT * FROM ASSETSMETADATA.ACT_HI_COMMENT)C 
ON T.ID_ = C.TASK_ID_

1.2 V_TASKLIST_WSB 未上报任务视图表

SELECT
	cast('' as nvarchar2(255)) AS PROC_INST_ID_,
	cast('' as nvarchar2(255)) AS END_ACT_ID_,
	cast('未上报' as nvarchar2(255)) AS actName,
	cast('未上报' as nvarchar2(255)) AS actName_T,
	cast('' as nvarchar2(255)) AS assignee,
	cast('' as nvarchar2(255)) AS candidate,
	-1 AS taskstatus,
	cast('' as DATE) AS bltime,
	cast('' as nvarchar2(255)) AS prdekey,
	cast('' as nvarchar2(255)) AS prdename FROM ASSETSMETADATA.ACT_ID_USER

1.3 V_TASKLIST_DB 待办任务视图表

SELECT
	cast(A.PROC_INST_ID_ as nvarchar2(255)) PROC_INST_ID_,
	cast('' as nvarchar2(255)) END_ACT_ID_,
	cast(A.NAME_ as nvarchar2(255)) actName,
	cast(A.NAME_ as nvarchar2(255)) actName_T,
	cast(A.ASSIGNEE_ as nvarchar2(255)) assignee,
	cast(R.UserID as nvarchar2(255)) candidate,
	2 AS taskstatus,
	cast('' as DATE) bltime,
	cast(PRDE.KEY_ as nvarchar2(255)) prdekey,
	cast(PRDE.NAME_ as nvarchar2(255)) prdename
FROM
	ASSETSMETADATA.ACT_RU_TASK A
LEFT OUTER JOIN ASSETSMETADATA.ACT_RE_PROCDEF PRDE ON A.PROC_DEF_ID_ = PRDE.ID_
LEFT OUTER JOIN ASSETSMETADATA.ACT_RU_IDENTITYLINK IDEN ON IDEN.TASK_ID_ = A.ID_
LEFT OUTER JOIN IPRIVILAGEMETADATA.ROLEUSERREF R ON IDEN.GROUP_ID_ = R.ROLEID

1.4 V_TASKLIST_YB 已办任务视图表

SELECT DISTINCT
	cast(H.PROC_INST_ID_ as nvarchar2(255)) PROC_INST_ID_,
	cast(H.END_ACT_ID_ as nvarchar2(255)) END_ACT_ID_,
	cast(A.NAME_ as nvarchar2(255)) actName,
	cast(T.NAME_ as nvarchar2(255)) actName_T,
	cast(T.ASSIGNEE_ as nvarchar2(255)) assignee,
	cast('' as nvarchar2(255)) candidate,
	2 AS taskstatus,
	T.END_TIME_  bltime,
	cast(PRDE.KEY_ as nvarchar2(255)) prdekey,
	cast(PRDE.NAME_ as nvarchar2(255)) prdename
FROM
	ASSETSMETADATA.ACT_HI_PROCINST H
LEFT OUTER JOIN ASSETSMETADATA.ACT_HI_TASKINST T ON H.PROC_INST_ID_ = T.PROC_INST_ID_
LEFT OUTER JOIN ASSETSMETADATA.ACT_RE_PROCDEF PRDE ON H .PROC_DEF_ID_ = PRDE.ID_
LEFT OUTER JOIN ASSETSMETADATA.ACT_RU_TASK A ON H.PROC_INST_ID_ = A.PROC_INST_ID_
WHERE
	(H.END_TIME_ IS NULL)
AND (T.END_TIME_ IS NOT NULL)

1.5 V_TASKLIST_SYYB 所有已办任务视图表

SELECT DISTINCT
	cast(H.PROC_INST_ID_ as nvarchar2(255)) PROC_INST_ID_,
	cast(H.END_ACT_ID_ as nvarchar2(255)) END_ACT_ID_,
	cast(NVL(A.NAME_,NVL2(H.END_ACT_ID_, '任务完结','撤销完结')) as nvarchar2(255))  AS actName,
	cast(T.NAME_ as nvarchar2(255)) AS actName_T,
	cast(T.ASSIGNEE_ as nvarchar2(255)) AS assignee,
	cast('' as nvarchar2(255)) AS candidate,
	2 AS taskstatus,
	T.END_TIME_ AS bltime,
	cast(PRDE.KEY_ as nvarchar2(255)) AS prdekey,
	cast(PRDE.NAME_  as nvarchar2(255)) AS prdename
FROM
	ASSETSMETADATA.ACT_HI_PROCINST H
LEFT OUTER JOIN ASSETSMETADATA.ACT_HI_TASKINST T ON H.PROC_INST_ID_ = T.PROC_INST_ID_
LEFT OUTER JOIN ASSETSMETADATA.ACT_RE_PROCDEF PRDE ON H.PROC_DEF_ID_ = PRDE.ID_
LEFT OUTER JOIN ASSETSMETADATA.ACT_RU_TASK A ON H.PROC_INST_ID_ = A.PROC_INST_ID_
WHERE
	(T.END_TIME_ IS NOT NULL)
AND (
	NOT EXISTS (
		SELECT
			PROC_INST_ID_
		FROM
			ASSETSMETADATA.V_TASKLIST_DB D
		WHERE
		(PROC_INST_ID_ = H.PROC_INST_ID_)
		AND (candidate = T.ASSIGNEE_)
		AND (actName_T = T.NAME_)
		OR (
			PROC_INST_ID_ = H.PROC_INST_ID_
		)
		AND (actName_T = T.NAME_)
		AND (assignee = T.ASSIGNEE_)
		OR (PROC_INST_ID_ = H.PROC_INST_ID_)
		AND (candidate = T.ASSIGNEE_)
		AND (actName LIKE '%上报%')
		AND (T.NAME_ LIKE '%上报%')
		OR (PROC_INST_ID_ = H.PROC_INST_ID_)
		AND (assignee = T.ASSIGNEE_)
		AND (actName LIKE '%上报%')
		AND (T.NAME_ LIKE '%上报%')
	)
)
ORDER BY
	bltime DESC

1.5 V_TASKLIST_BJ 办结任务视图表

SELECT DISTINCT
	cast(H.PROC_INST_ID_ as nvarchar2(255)) PROC_INST_ID_,
	cast(H.END_ACT_ID_ as nvarchar2(255)) END_ACT_ID_,
	cast('结束' as nvarchar2(255)) actName,
	cast('结束' as nvarchar2(255)) actName_T,
	cast(T.ASSIGNEE_ as nvarchar2(255))  assignee,
	cast('' as nvarchar2(255))  candidate,
	3 taskstatus,
	T.END_TIME_  bltime,
	cast(PRDE.KEY_ as nvarchar2(255))  prdekey,
	cast(PRDE.NAME_ as nvarchar2(255))  prdename
FROM
	ASSETSMETADATA.ACT_HI_PROCINST H
LEFT OUTER JOIN 
	(SELECT * FROM ASSETSMETADATA.ACT_HI_TASKINST)T
ON H.PROC_INST_ID_ = T.PROC_INST_ID_
LEFT OUTER JOIN 
  (SELECT * FROM ASSETSMETADATA.ACT_RE_PROCDEF)PRDE 
ON H.PROC_DEF_ID_ = PRDE.ID_
WHERE
	(H.END_TIME_ IS NOT NULL) AND (H.END_ACT_ID_ IS NOT NULL)

1.6 V_TASKLIST_CX 撤销任务视图表

SELECT DISTINCT
	cast(H.PROC_INST_ID_ as nvarchar2(255)) PROC_INST_ID_,
	cast(H.END_ACT_ID_ as nvarchar2(255)) END_ACT_ID_,
	cast('结束' as nvarchar2(255)) AS actName,
	cast('结束' as nvarchar2(255)) AS actName_T,
	cast(T.ASSIGNEE_ as nvarchar2(255)) AS assignee,
	cast('' as nvarchar2(255)) AS candidate,
	5 AS taskstatus,
	T.END_TIME_ AS bltime,
	cast(PRDE.KEY_ as nvarchar2(255)) AS prdekey,
	cast(PRDE.NAME_ as nvarchar2(255)) AS prdename
FROM
	ASSETSMETADATA.ACT_HI_PROCINST H
LEFT OUTER JOIN ASSETSMETADATA.ACT_HI_TASKINST  T ON H.PROC_INST_ID_ = T.PROC_INST_ID_
LEFT OUTER JOIN ASSETSMETADATA.ACT_RE_PROCDEF  PRDE ON H.PROC_DEF_ID_ = PRDE.ID_
WHERE
	(H.END_TIME_ IS NOT NULL)
AND (H.END_ACT_ID_ IS NULL)

2.后台代码逻辑

	@Override
	public ArrayList findActList(Integer rows,Integer page, HashMap paramMap) {
		String sql = "";
		if(paramMap.get("checkmessage")!=null&&StringUtils.isNotEmpty(paramMap.get("checkmessage").toString())){
//			sql = "select * from ASSETSMETADATA.V_ACTLIST V where PROCINSTID= ? and clyj is not null and clyj <> '完成' ORDER BY START_TIME_";
			sql = "select * from ASSETSMETADATA.V_ACTLIST V where PROCINSTID= ? and clyj is not null ORDER BY START_TIME_";
		}else{
			sql = "SELECT V.*" + " FROM ASSETSMETADATA.V_ACTLIST V WHERE procInstId = ? ORDER BY V.START_TIME_";
		}
		List