org.snaker.engine.access.AbstractDBAccess.java Source code

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/* Copyright 2013-2015 www.snakerflow.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.snaker.engine.access;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Types;
import java.util.*;

import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.snaker.engine.DBAccess;
import org.snaker.engine.SnakerException;
import org.snaker.engine.access.dialect.Dialect;
import org.snaker.engine.access.jdbc.JdbcHelper;
import org.snaker.engine.core.ServiceContext;
import org.snaker.engine.entity.CCOrder;
import org.snaker.engine.entity.HistoryOrder;
import org.snaker.engine.entity.HistoryTask;
import org.snaker.engine.entity.HistoryTaskActor;
import org.snaker.engine.entity.Order;
import org.snaker.engine.entity.Process;
import org.snaker.engine.entity.Surrogate;
import org.snaker.engine.entity.Task;
import org.snaker.engine.entity.TaskActor;
import org.snaker.engine.entity.WorkItem;
import org.snaker.engine.helper.ClassHelper;
import org.snaker.engine.helper.ConfigHelper;
import org.snaker.engine.helper.StringHelper;

/**
 * ?
 * ?SQL?
 * @author yuqs
 * @since 1.0
 */
public abstract class AbstractDBAccess implements DBAccess {
    private static final Logger log = LoggerFactory.getLogger(AbstractDBAccess.class);
    protected static final String KEY_SQL = "SQL";
    protected static final String KEY_ARGS = "ARGS";
    protected static final String KEY_TYPE = "TYPE";
    protected static final String KEY_ENTITY = "ENTITY";

    protected static final String KEY_SU = "SU";
    protected static final String SAVE = "SAVE";
    protected static final String UPDATE = "UPDATE";

    protected static final String PROCESS_INSERT = "insert into snaker_process (id,name,display_Name,type,instance_Url,state,version,create_Time,creator) values (?,?,?,?,?,?,?,?,?)";
    protected static final String PROCESS_UPDATE = "update snaker_process set name=?, display_Name=?,state=?,instance_Url=?,create_Time=?,creator=? where id=? ";
    protected static final String PROCESS_DELETE = "delete from snaker_process where id = ?";
    protected static final String PROCESS_UPDATE_BLOB = "update snaker_process set content=? where id=?";
    protected static final String PROCESS_UPDATE_TYPE = "update snaker_process set type=? where id=?";

    protected static final String ORDER_INSERT = "insert into snaker_order (id,process_Id,creator,create_Time,parent_Id,parent_Node_Name,expire_Time,last_Update_Time,last_Updator,order_No,variable,version) values (?,?,?,?,?,?,?,?,?,?,?,?)";
    protected static final String ORDER_UPDATE = "update snaker_order set last_Updator=?, last_Update_Time=?, variable = ?, expire_Time=?, version = version + 1 where id=? and version = ?";
    protected static final String ORDER_DELETE = "delete from snaker_order where id = ?";
    protected static final String ORDER_HISTORY_INSERT = "insert into snaker_hist_order (id,process_Id,order_State,creator,create_Time,end_Time,parent_Id,expire_Time,order_No,variable) values (?,?,?,?,?,?,?,?,?,?)";
    protected static final String ORDER_HISTORY_UPDATE = "update snaker_hist_order set order_State = ?, end_Time = ?, variable = ? where id = ? ";
    protected static final String ORDER_HISTORY_DELETE = "delete from snaker_hist_order where id = ?";

    protected static final String CCORDER_INSERT = "insert into snaker_cc_order (order_Id, actor_Id, creator, create_Time, status) values (?, ?, ?, ?, ?)";
    protected static final String CCORDER_UPDATE = "update snaker_cc_order set status = ?, finish_Time = ? where order_Id = ? and actor_Id = ?";
    protected static final String CCORDER_DELETE = "delete from snaker_cc_order where order_Id = ? and actor_Id = ?";

    protected static final String TASK_INSERT = "insert into snaker_task (id,order_Id,task_Name,display_Name,task_Type,perform_Type,operator,create_Time,finish_Time,expire_Time,action_Url,parent_Task_Id,variable,version) values (?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
    protected static final String TASK_UPDATE = "update snaker_task set finish_Time=?, operator=?, variable=?, expire_Time=?, action_Url=?, version = version + 1 where id=? and version = ?";
    protected static final String TASK_DELETE = "delete from snaker_task where id = ?";
    protected static final String TASK_HISTORY_INSERT = "insert into snaker_hist_task (id,order_Id,task_Name,display_Name,task_Type,perform_Type,task_State,operator,create_Time,finish_Time,expire_Time,action_Url,parent_Task_Id,variable) values (?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
    protected static final String TASK_HISTORY_DELETE = "delete from snaker_hist_task where id = ?";

    protected static final String TASK_ACTOR_INSERT = "insert into snaker_task_actor (task_Id, actor_Id) values (?, ?)";
    protected static final String TASK_ACTOR_DELETE = "delete from snaker_task_actor where task_Id = ?";
    protected static final String TASK_ACTOR_REDUCE = "delete from snaker_task_actor where task_Id = ? and actor_Id = ?";
    protected static final String TASK_ACTOR_HISTORY_INSERT = "insert into snaker_hist_task_actor (task_Id, actor_Id) values (?, ?)";
    protected static final String TASK_ACTOR_HISTORY_DELETE = "delete from snaker_hist_task_actor where task_Id = ?";

    protected static final String QUERY_VERSION = "select max(version) from snaker_process ";
    protected static final String QUERY_PROCESS = "select id,name,display_Name,type,instance_Url,state, content, version,create_Time,creator from snaker_process ";
    protected static final String QUERY_ORDER = "select o.id,o.process_Id,o.creator,o.create_Time,o.parent_Id,o.parent_Node_Name,o.expire_Time,o.last_Update_Time,o.last_Updator,o.priority,o.order_No,o.variable, o.version from snaker_order o ";
    protected static final String QUERY_TASK = "select id,order_Id,task_Name,display_Name,task_Type,perform_Type,operator,create_Time,finish_Time,expire_Time,action_Url,parent_Task_Id,variable, version from snaker_task ";
    protected static final String QUERY_TASK_ACTOR = "select task_Id, actor_Id from snaker_task_actor ";
    protected static final String QUERY_CCORDER = "select order_Id, actor_Id, creator, create_Time, finish_Time, status from snaker_cc_order ";

    protected static final String QUERY_HIST_ORDER = "select o.id,o.process_Id,o.order_State,o.priority,o.creator,o.create_Time,o.end_Time,o.parent_Id,o.expire_Time,o.order_No,o.variable from snaker_hist_order o ";
    protected static final String QUERY_HIST_TASK = "select id,order_Id,task_Name,display_Name,task_Type,perform_Type,task_State,operator,create_Time,finish_Time,expire_Time,action_Url,parent_Task_Id,variable from snaker_hist_task ";
    protected static final String QUERY_HIST_TASK_ACTOR = "select task_Id, actor_Id from snaker_hist_task_actor ";

    /**?CRUD*/
    protected static final String SURROGATE_INSERT = "insert into snaker_surrogate (id, process_Name, operator, surrogate, odate, sdate, edate, state) values (?,?,?,?,?,?,?,?)";
    protected static final String SURROGATE_UPDATE = "update snaker_surrogate set process_Name=?, surrogate=?, odate=?, sdate=?, edate=?, state=? where id = ?";
    protected static final String SURROGATE_DELETE = "delete from snaker_surrogate where id = ?";
    protected static final String SURROGATE_QUERY = "select id, process_Name, operator, surrogate, odate, sdate, edate, state from snaker_surrogate";

    protected Dialect dialect;

    /**
     * ?ORM?
     * @return boolean
     */
    public abstract boolean isORM();

    /**
     * ?
     * isORMtrue?map?
     * isORMfalse?map?SQL?ARGS?TYPE
     * @param map ???
     */
    public abstract void saveOrUpdate(Map<String, Object> map);

    public void initialize(Object accessObject) {

    }

    /**
     * isORMfalse?map
     * @param sql ?sql?
     * @param args sql??
     * @param type sql??
     * @return map
     */
    private Map<String, Object> buildMap(String sql, Object[] args, int[] type) {
        Map<String, Object> map = new HashMap<String, Object>();
        map.put(KEY_SQL, sql);
        map.put(KEY_ARGS, args);
        map.put(KEY_TYPE, type);
        return map;
    }

    /**
     * isORMtrue?orm
     * @param entity 
      * @param su ?
     * @return map
     */
    private Map<String, Object> buildMap(Object entity, String su) {
        Map<String, Object> map = new HashMap<String, Object>();
        map.put(KEY_ENTITY, entity);
        map.put(KEY_SU, su);
        return map;
    }

    /**
     * ??
      * ??DatabaseMetaData???
      * ???????
     * @return 
     */
    protected Dialect getDialect() {
        if (dialect != null)
            return dialect;
        dialect = ServiceContext.getContext().find(Dialect.class);
        if (dialect == null) {
            try {
                dialect = JdbcHelper.getDialect(getConnection());
            } catch (Exception e) {
                log.error("Unable to find the available dialect.Please configure dialect to snaker.xml");
            }
        }
        return dialect;
    }

    /**
     * process?blob??process??
     */
    public void saveProcess(Process process) {
        if (isORM()) {
            saveOrUpdate(buildMap(process, SAVE));
        } else {
            Object[] args = new Object[] { process.getId(), process.getName(), process.getDisplayName(),
                    process.getType(), process.getInstanceUrl(), process.getState(), process.getVersion(),
                    process.getCreateTime(), process.getCreator() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.INTEGER, Types.VARCHAR,
                    Types.INTEGER, Types.INTEGER, Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(PROCESS_INSERT, args, type));
        }
    }

    /**
     * process?blob??process??
     */
    public void updateProcess(Process process) {
        if (isORM()) {
            saveOrUpdate(buildMap(process, UPDATE));
        } else {
            Object[] args = new Object[] { process.getName(), process.getDisplayName(), process.getState(),
                    process.getInstanceUrl(), process.getCreateTime(), process.getCreator(), process.getId() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.INTEGER, Types.VARCHAR, Types.VARCHAR,
                    Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(PROCESS_UPDATE, args, type));
        }
    }

    public void deleteProcess(Process process) {
        if (!isORM()) {
            Object[] args = new Object[] { process.getId() };
            int[] type = new int[] { Types.VARCHAR };
            saveOrUpdate(buildMap(PROCESS_DELETE, args, type));
        }
    }

    public void updateProcessType(String id, String type) {
        if (isORM()) {
            Process process = getProcess(id);
            process.setType(type);
            saveOrUpdate(buildMap(process, UPDATE));
        } else {
            Object[] args = new Object[] { type, id };
            int[] types = new int[] { Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(PROCESS_UPDATE_TYPE, args, types));
        }
    }

    public void saveTask(Task task) {
        if (isORM()) {
            saveOrUpdate(buildMap(task, SAVE));
        } else {
            Object[] args = new Object[] { task.getId(), task.getOrderId(), task.getTaskName(),
                    task.getDisplayName(), task.getTaskType(), task.getPerformType(), task.getOperator(),
                    task.getCreateTime(), task.getFinishTime(), task.getExpireTime(), task.getActionUrl(),
                    task.getParentTaskId(), task.getVariable(), task.getVersion() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.INTEGER,
                    Types.INTEGER, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.VARCHAR, Types.VARCHAR, Types.INTEGER };
            saveOrUpdate(buildMap(TASK_INSERT, args, type));
        }
    }

    public void saveOrder(Order order) {
        if (isORM()) {
            saveOrUpdate(buildMap(order, SAVE));
        } else {
            Object[] args = new Object[] { order.getId(), order.getProcessId(), order.getCreator(),
                    order.getCreateTime(), order.getParentId(), order.getParentNodeName(), order.getExpireTime(),
                    order.getLastUpdateTime(), order.getLastUpdator(), order.getOrderNo(), order.getVariable(),
                    order.getVersion() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.INTEGER };
            saveOrUpdate(buildMap(ORDER_INSERT, args, type));
        }
    }

    public void saveCCOrder(CCOrder ccorder) {
        if (isORM()) {
            saveOrUpdate(buildMap(ccorder, SAVE));
        } else {
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.INTEGER };
            saveOrUpdate(buildMap(CCORDER_INSERT, new Object[] { ccorder.getOrderId(), ccorder.getActorId(),
                    ccorder.getCreator(), ccorder.getCreateTime(), ccorder.getStatus() }, type));
        }
    }

    public void saveTaskActor(TaskActor taskActor) {
        if (isORM()) {
            saveOrUpdate(buildMap(taskActor, SAVE));
        } else {
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(TASK_ACTOR_INSERT, new Object[] { taskActor.getTaskId(), taskActor.getActorId() },
                    type));
        }
    }

    public void updateTask(Task task) {
        if (isORM()) {
            saveOrUpdate(buildMap(task, UPDATE));
        } else {
            Object[] args = new Object[] { task.getFinishTime(), task.getOperator(), task.getVariable(),
                    task.getExpireTime(), task.getActionUrl(), task.getId(), task.getVersion() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.VARCHAR, Types.INTEGER };
            saveOrUpdate(buildMap(TASK_UPDATE, args, type));
        }
    }

    public void updateOrder(Order order) {
        if (isORM()) {
            saveOrUpdate(buildMap(order, UPDATE));
        } else {
            Object[] args = new Object[] { order.getLastUpdator(), order.getLastUpdateTime(), order.getVariable(),
                    order.getExpireTime(), order.getId(), order.getVersion() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.INTEGER };
            saveOrUpdate(buildMap(ORDER_UPDATE, args, type));
        }
    }

    public void updateCCOrder(CCOrder ccorder) {
        if (isORM()) {
            saveOrUpdate(buildMap(ccorder, UPDATE));
        } else {
            Object[] args = new Object[] { ccorder.getStatus(), ccorder.getFinishTime(), ccorder.getOrderId(),
                    ccorder.getActorId() };
            int[] type = new int[] { Types.INTEGER, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(CCORDER_UPDATE, args, type));
        }
    }

    public void deleteTask(Task task) {
        if (!isORM()) {
            Object[] args = new Object[] { task.getId() };
            int[] type = new int[] { Types.VARCHAR };
            saveOrUpdate(buildMap(TASK_ACTOR_DELETE, args, type));
            saveOrUpdate(buildMap(TASK_DELETE, args, type));
        }
    }

    public void deleteOrder(Order order) {
        if (!isORM()) {
            int[] type = new int[] { Types.VARCHAR };
            saveOrUpdate(buildMap(ORDER_DELETE, new Object[] { order.getId() }, type));
        }
    }

    public void deleteCCOrder(CCOrder ccorder) {
        if (!isORM()) {
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(
                    buildMap(CCORDER_DELETE, new Object[] { ccorder.getOrderId(), ccorder.getActorId() }, type));
        }
    }

    public void removeTaskActor(String taskId, String... actors) {
        if (!isORM()) {
            for (String actorId : actors) {
                int[] type = new int[] { Types.VARCHAR, Types.VARCHAR };
                saveOrUpdate(buildMap(TASK_ACTOR_REDUCE, new Object[] { taskId, actorId }, type));
            }
        }
    }

    public void saveHistory(HistoryOrder order) {
        if (isORM()) {
            saveOrUpdate(buildMap(order, SAVE));
        } else {
            Object[] args = new Object[] { order.getId(), order.getProcessId(), order.getOrderState(),
                    order.getCreator(), order.getCreateTime(), order.getEndTime(), order.getParentId(),
                    order.getExpireTime(), order.getOrderNo(), order.getVariable() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.INTEGER, Types.VARCHAR, Types.VARCHAR,
                    Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(ORDER_HISTORY_INSERT, args, type));
        }
    }

    public void updateHistory(HistoryOrder order) {
        if (isORM()) {
            saveOrUpdate(buildMap(order, UPDATE));
        } else {
            Object[] args = new Object[] { order.getOrderState(), order.getEndTime(), order.getVariable(),
                    order.getId() };
            int[] type = new int[] { Types.INTEGER, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(ORDER_HISTORY_UPDATE, args, type));
        }
    }

    public void deleteHistoryOrder(HistoryOrder historyOrder) {
        if (!isORM()) {
            Object[] args = new Object[] { historyOrder.getId() };
            int[] type = new int[] { Types.VARCHAR };
            saveOrUpdate(buildMap(ORDER_HISTORY_DELETE, args, type));
        }
    }

    public void saveHistory(HistoryTask task) {
        if (isORM()) {
            saveOrUpdate(buildMap(task, SAVE));
            if (task.getActorIds() != null) {
                for (String actorId : task.getActorIds()) {
                    if (StringHelper.isEmpty(actorId))
                        continue;
                    HistoryTaskActor hist = new HistoryTaskActor();
                    hist.setActorId(actorId);
                    hist.setTaskId(task.getId());
                    saveOrUpdate(buildMap(hist, SAVE));
                }
            }
        } else {
            Object[] args = new Object[] { task.getId(), task.getOrderId(), task.getTaskName(),
                    task.getDisplayName(), task.getTaskType(), task.getPerformType(), task.getTaskState(),
                    task.getOperator(), task.getCreateTime(), task.getFinishTime(), task.getExpireTime(),
                    task.getActionUrl(), task.getParentTaskId(), task.getVariable() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.INTEGER,
                    Types.INTEGER, Types.INTEGER, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.VARCHAR, Types.VARCHAR, Types.VARCHAR };
            saveOrUpdate(buildMap(TASK_HISTORY_INSERT, args, type));
            if (task.getActorIds() != null) {
                for (String actorId : task.getActorIds()) {
                    if (StringHelper.isEmpty(actorId))
                        continue;
                    saveOrUpdate(buildMap(TASK_ACTOR_HISTORY_INSERT, new Object[] { task.getId(), actorId },
                            new int[] { Types.VARCHAR, Types.VARCHAR }));
                }
            }
        }
    }

    public void deleteHistoryTask(HistoryTask historyTask) {
        if (!isORM()) {
            Object[] args = new Object[] { historyTask.getId() };
            int[] type = new int[] { Types.VARCHAR };
            saveOrUpdate(buildMap(TASK_ACTOR_HISTORY_DELETE, args, type));
            saveOrUpdate(buildMap(TASK_HISTORY_DELETE, args, type));
        }
    }

    public void updateOrderVariable(Order order) {
        updateOrder(order);
        HistoryOrder hist = getHistOrder(order.getId());
        hist.setVariable(order.getVariable());
        updateHistory(hist);
    }

    public void saveSurrogate(Surrogate surrogate) {
        if (isORM()) {
            saveOrUpdate(buildMap(surrogate, SAVE));
        } else {
            Object[] args = new Object[] { surrogate.getId(), surrogate.getProcessName(), surrogate.getOperator(),
                    surrogate.getSurrogate(), surrogate.getOdate(), surrogate.getSdate(), surrogate.getEdate(),
                    surrogate.getState() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.VARCHAR, Types.VARCHAR, Types.INTEGER };
            saveOrUpdate(buildMap(SURROGATE_INSERT, args, type));
        }
    }

    public void updateSurrogate(Surrogate surrogate) {
        if (isORM()) {
            saveOrUpdate(buildMap(surrogate, UPDATE));
        } else {
            Object[] args = new Object[] { surrogate.getProcessName(), surrogate.getSurrogate(),
                    surrogate.getOdate(), surrogate.getSdate(), surrogate.getEdate(), surrogate.getState(),
                    surrogate.getId() };
            int[] type = new int[] { Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
                    Types.INTEGER, Types.VARCHAR };
            saveOrUpdate(buildMap(SURROGATE_UPDATE, args, type));
        }
    }

    public void deleteSurrogate(Surrogate surrogate) {
        if (!isORM()) {
            Object[] args = new Object[] { surrogate.getId() };
            int[] type = new int[] { Types.VARCHAR };
            saveOrUpdate(buildMap(SURROGATE_DELETE, args, type));
        }
    }

    public Surrogate getSurrogate(String id) {
        String where = " where id = ?";
        return queryObject(Surrogate.class, SURROGATE_QUERY + where, id);
    }

    public List<Surrogate> getSurrogate(Page<Surrogate> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder(SURROGATE_QUERY);
        sql.append(" where 1=1 and state = 1 ");
        List<Object> paramList = new ArrayList<Object>();
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and process_Name in(");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getOperators() != null && filter.getOperators().length > 0) {
            sql.append(" and operator in (");
            for (String actor : filter.getOperators()) {
                sql.append("?,");
                paramList.add(actor);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (StringHelper.isNotEmpty(filter.getOperateTime())) {
            sql.append(" and sdate <= ? and edate >= ? ");
            paramList.add(filter.getOperateTime());
            paramList.add(filter.getOperateTime());
        }
        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("sdate");
        }
        return queryList(page, filter, Surrogate.class, sql.toString(), paramList.toArray());
    }

    public Task getTask(String taskId) {
        String where = " where id = ?";
        return queryObject(Task.class, QUERY_TASK + where, taskId);
    }

    public List<Task> getNextActiveTasks(String parentTaskId) {
        String where = " where parent_Task_Id = ?";
        return queryList(Task.class, QUERY_TASK + where, parentTaskId);
    }

    public List<Task> getNextActiveTasks(String orderId, String taskName, String parentTaskId) {
        String sql = QUERY_TASK
                + " where parent_task_id in ( select ht.id from wf_hist_task ht where ht.order_id=? and ht.task_name=? and ht.parent_task_id=? )";
        return queryList(Task.class, sql, orderId, taskName, parentTaskId);
    }

    public HistoryTask getHistTask(String taskId) {
        String where = " where id = ?";
        return queryObject(HistoryTask.class, QUERY_HIST_TASK + where, taskId);
    }

    public HistoryOrder getHistOrder(String orderId) {
        String where = " where id = ?";
        return queryObject(HistoryOrder.class, QUERY_HIST_ORDER + where, orderId);
    }

    public List<TaskActor> getTaskActorsByTaskId(String taskId) {
        String where = " where task_Id = ?";
        return queryList(TaskActor.class, QUERY_TASK_ACTOR + where, taskId);
    }

    public List<HistoryTaskActor> getHistTaskActorsByTaskId(String taskId) {
        String where = " where task_Id = ?";
        return queryList(HistoryTaskActor.class, QUERY_HIST_TASK_ACTOR + where, taskId);
    }

    public Order getOrder(String orderId) {
        String where = " where id = ?";
        return queryObject(Order.class, QUERY_ORDER + where, orderId);
    }

    public List<CCOrder> getCCOrder(String orderId, String... actorIds) {
        StringBuilder where = new StringBuilder(QUERY_CCORDER);
        where.append(" where 1 = 1 ");

        if (StringHelper.isNotEmpty(orderId)) {
            where.append(" and order_Id = ?");
        }
        if (actorIds != null && actorIds.length > 0) {
            where.append(" and actor_Id in (");
            where.append(StringUtils.repeat("?,", actorIds.length));
            where.deleteCharAt(where.length() - 1);
            where.append(") ");
        }
        return queryList(CCOrder.class, where.toString(), ArrayUtils.add(actorIds, 0, orderId));
    }

    public Process getProcess(String id) {
        String where = " where id = ?";
        return queryObject(Process.class, QUERY_PROCESS + where, id);
    }

    public List<Process> getProcesss(Page<Process> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder(QUERY_PROCESS);
        sql.append(" where 1=1 ");
        List<Object> paramList = new ArrayList<Object>();
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and name in(");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getVersion() != null) {
            sql.append(" and version = ? ");
            paramList.add(filter.getVersion());
        }
        if (filter.getState() != null) {
            sql.append(" and state = ? ");
            paramList.add(filter.getState());
        }
        if (StringHelper.isNotEmpty(filter.getDisplayName())) {
            sql.append(" and display_Name like ? ");
            paramList.add("%" + filter.getDisplayName() + "%");
        }
        if (StringHelper.isNotEmpty(filter.getProcessType())) {
            sql.append(" and type = ? ");
            paramList.add(filter.getProcessType());
        }
        if (filter.getOperators() != null && filter.getOperators().length > 0) {
            sql.append(" and creator in(");
            for (int i = 0; i < filter.getOperators().length; i++) {
                sql.append("?,");
                paramList.add(filter.getOperators()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.ASC);
            filter.setOrderBy("name");
        }

        return queryList(page, filter, Process.class, sql.toString(), paramList.toArray());
    }

    public List<Order> getActiveOrders(Page<Order> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder(QUERY_ORDER);
        sql.append(" left join wf_process p on p.id = o.process_id ");
        sql.append(" where 1=1 ");
        List<Object> paramList = new ArrayList<Object>();
        if (filter.getOperators() != null && filter.getOperators().length > 0) {
            sql.append(" and o.creator in(");
            for (int i = 0; i < filter.getOperators().length; i++) {
                sql.append("?,");
                paramList.add(filter.getOperators()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and p.name in(");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (StringHelper.isNotEmpty(filter.getProcessId())) {
            sql.append(" and o.process_Id = ? ");
            paramList.add(filter.getProcessId());
        }
        if (StringHelper.isNotEmpty(filter.getDisplayName())) {
            sql.append(" and p.display_Name like ?");
            paramList.add("%" + filter.getDisplayName() + "%");
        }
        if (StringHelper.isNotEmpty(filter.getProcessType())) {
            sql.append(" and p.type = ? ");
            paramList.add(filter.getProcessType());
        }
        if (StringHelper.isNotEmpty(filter.getParentId())) {
            sql.append(" and o.parent_Id = ? ");
            paramList.add(filter.getParentId());
        }
        if (filter.getExcludedIds() != null && filter.getExcludedIds().length > 0) {
            sql.append(" and o.id not in(");
            for (int i = 0; i < filter.getExcludedIds().length; i++) {
                sql.append("?,");
                paramList.add(filter.getExcludedIds()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeStart())) {
            sql.append(" and o.create_Time >= ? ");
            paramList.add(filter.getCreateTimeStart());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeEnd())) {
            sql.append(" and o.create_Time <= ? ");
            paramList.add(filter.getCreateTimeEnd());
        }
        if (StringHelper.isNotEmpty(filter.getOrderNo())) {
            sql.append(" and o.order_No = ? ");
            paramList.add(filter.getOrderNo());
        }

        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("o.create_Time");
        }
        return queryList(page, filter, Order.class, sql.toString(), paramList.toArray());
    }

    public List<Task> getActiveTasks(Page<Task> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder(QUERY_TASK);
        boolean isFetchActor = filter.getOperators() != null && filter.getOperators().length > 0;
        if (isFetchActor) {
            sql.append(" left join wf_task_actor ta on ta.task_id = id ");
        }
        sql.append(" where 1=1 ");
        List<Object> paramList = new ArrayList<Object>();
        if (StringHelper.isNotEmpty(filter.getOrderId())) {
            sql.append(" and order_Id = ? ");
            paramList.add(filter.getOrderId());
        }
        if (filter.getExcludedIds() != null && filter.getExcludedIds().length > 0) {
            sql.append(" and id not in(");
            for (int i = 0; i < filter.getExcludedIds().length; i++) {
                sql.append("?,");
                paramList.add(filter.getExcludedIds()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (isFetchActor) {
            sql.append(" and ta.actor_Id in (");
            for (int i = 0; i < filter.getOperators().length; i++) {
                sql.append("?,");
                paramList.add(filter.getOperators()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and task_Name in (");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeStart())) {
            sql.append(" and create_Time >= ? ");
            paramList.add(filter.getCreateTimeStart());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeEnd())) {
            sql.append(" and create_Time <= ? ");
            paramList.add(filter.getCreateTimeEnd());
        }
        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("create_Time");
        }
        return queryList(page, filter, Task.class, sql.toString(), paramList.toArray());
    }

    public List<HistoryOrder> getHistoryOrders(Page<HistoryOrder> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder(QUERY_HIST_ORDER);
        sql.append(" left join wf_process p on p.id = o.process_id ");
        sql.append(" where 1=1 ");
        List<Object> paramList = new ArrayList<Object>();
        if (filter.getOperators() != null && filter.getOperators().length > 0) {
            sql.append(" and o.creator in(");
            for (int i = 0; i < filter.getOperators().length; i++) {
                sql.append("?,");
                paramList.add(filter.getOperators()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and p.name in(");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (StringHelper.isNotEmpty(filter.getProcessId())) {
            sql.append(" and o.process_Id = ? ");
            paramList.add(filter.getProcessId());
        }
        if (StringHelper.isNotEmpty(filter.getProcessType())) {
            sql.append(" and p.type = ? ");
            paramList.add(filter.getProcessType());
        }
        if (StringHelper.isNotEmpty(filter.getDisplayName())) {
            sql.append(" and p.display_Name like ?");
            paramList.add("%" + filter.getDisplayName() + "%");
        }
        if (StringHelper.isNotEmpty(filter.getParentId())) {
            sql.append(" and o.parent_Id = ? ");
            paramList.add(filter.getParentId());
        }
        if (filter.getState() != null) {
            sql.append(" and o.order_State = ? ");
            paramList.add(filter.getState());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeStart())) {
            sql.append(" and o.create_Time >= ? ");
            paramList.add(filter.getCreateTimeStart());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeEnd())) {
            sql.append(" and o.create_Time <= ? ");
            paramList.add(filter.getCreateTimeEnd());
        }
        if (StringHelper.isNotEmpty(filter.getOrderNo())) {
            sql.append(" and o.order_No = ? ");
            paramList.add(filter.getOrderNo());
        }
        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("o.create_Time");
        }
        return queryList(page, filter, HistoryOrder.class, sql.toString(), paramList.toArray());
    }

    public List<HistoryTask> getHistoryTasks(Page<HistoryTask> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder(QUERY_HIST_TASK);
        boolean isFetchActor = filter.getOperators() != null && filter.getOperators().length > 0;
        if (isFetchActor) {
            sql.append(" left join wf_hist_task_actor ta on ta.task_id = id ");
        }
        sql.append(" where 1=1 ");
        List<Object> paramList = new ArrayList<Object>();
        if (StringHelper.isNotEmpty(filter.getOrderId())) {
            sql.append(" and order_Id = ? ");
            paramList.add(filter.getOrderId());
        }
        if (isFetchActor) {
            sql.append(" and ta.actor_Id in (");
            for (int i = 0; i < filter.getOperators().length; i++) {
                sql.append("?,");
                paramList.add(filter.getOperators()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and task_Name in (");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeStart())) {
            sql.append(" and create_Time >= ? ");
            paramList.add(filter.getCreateTimeStart());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeEnd())) {
            sql.append(" and create_Time <= ? ");
            paramList.add(filter.getCreateTimeEnd());
        }
        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("finish_Time");
        }
        return queryList(page, filter, HistoryTask.class, sql.toString(), paramList.toArray());
    }

    public List<WorkItem> getWorkItems(Page<WorkItem> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder();
        sql.append(
                " select distinct o.process_Id, t.order_Id, t.id as id, t.id as task_Id, p.display_Name as process_Name, p.instance_Url, o.parent_Id, o.creator, ");
        sql.append(
                " o.create_Time as order_Create_Time, o.expire_Time as order_Expire_Time, o.order_No, o.variable as order_Variable, ");
        sql.append(
                " t.display_Name as task_Name, t.task_Name as task_Key, t.task_Type, t.perform_Type, t.operator, t.action_Url, ");
        sql.append(
                " t.create_Time as task_Create_Time, t.finish_Time as task_End_Time, t.expire_Time as task_Expire_Time, t.variable as task_Variable ");
        sql.append(" from wf_task t ");
        sql.append(" left join wf_order o on t.order_id = o.id ");
        sql.append(" left join wf_task_actor ta on ta.task_id=t.id ");
        sql.append(" left join wf_process p on p.id = o.process_id ");
        sql.append(" where 1=1 ");

        /**
         * ?sqlwhere?
         */
        List<Object> paramList = new ArrayList<Object>();
        if (filter.getOperators() != null && filter.getOperators().length > 0) {
            sql.append(" and ta.actor_Id in (");
            for (String actor : filter.getOperators()) {
                sql.append("?,");
                paramList.add(actor);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }

        if (StringHelper.isNotEmpty(filter.getProcessId())) {
            sql.append(" and o.process_Id = ?");
            paramList.add(filter.getProcessId());
        }
        if (StringHelper.isNotEmpty(filter.getDisplayName())) {
            sql.append(" and p.display_Name like ?");
            paramList.add("%" + filter.getDisplayName() + "%");
        }
        if (StringHelper.isNotEmpty(filter.getParentId())) {
            sql.append(" and o.parent_Id = ? ");
            paramList.add(filter.getParentId());
        }
        if (StringHelper.isNotEmpty(filter.getOrderId())) {
            sql.append(" and t.order_id = ? ");
            paramList.add(filter.getOrderId());
        }
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and t.task_Name in (");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getTaskType() != null) {
            sql.append(" and t.task_Type = ? ");
            paramList.add(filter.getTaskType());
        }
        if (filter.getPerformType() != null) {
            sql.append(" and t.perform_Type = ? ");
            paramList.add(filter.getPerformType());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeStart())) {
            sql.append(" and t.create_Time >= ? ");
            paramList.add(filter.getCreateTimeStart());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeEnd())) {
            sql.append(" and t.create_Time <= ? ");
            paramList.add(filter.getCreateTimeEnd());
        }
        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("t.create_Time");
        }

        return queryList(page, filter, WorkItem.class, sql.toString(), paramList.toArray());
    }

    public List<HistoryOrder> getCCWorks(Page<HistoryOrder> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder();
        sql.append(
                " select id,process_Id,order_State,priority,cc.creator,cc.create_Time,end_Time,parent_Id,expire_Time,order_No,variable ");
        sql.append(" from wf_cc_order cc ");
        sql.append(" left join wf_hist_order o on cc.order_id = o.id ");
        sql.append(" where 1=1 ");

        /**
         * ?sqlwhere?
         */
        List<Object> paramList = new ArrayList<Object>();
        if (filter.getOperators() != null && filter.getOperators().length > 0) {
            sql.append(" and cc.actor_Id in(");
            for (int i = 0; i < filter.getOperators().length; i++) {
                sql.append("?,");
                paramList.add(filter.getOperators()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getState() != null) {
            sql.append(" and cc.status = ? ");
            paramList.add(filter.getState());
        }
        if (StringHelper.isNotEmpty(filter.getProcessId())) {
            sql.append(" and process_Id = ? ");
            paramList.add(filter.getProcessId());
        }
        if (StringHelper.isNotEmpty(filter.getParentId())) {
            sql.append(" and parent_Id = ? ");
            paramList.add(filter.getParentId());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeStart())) {
            sql.append(" and cc.create_Time >= ? ");
            paramList.add(filter.getCreateTimeStart());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeEnd())) {
            sql.append(" and cc.create_Time <= ? ");
            paramList.add(filter.getCreateTimeEnd());
        }
        if (StringHelper.isNotEmpty(filter.getOrderNo())) {
            sql.append(" and order_No = ? ");
            paramList.add(filter.getOrderNo());
        }
        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("cc.create_Time");
        }
        return queryList(page, filter, HistoryOrder.class, sql.toString(), paramList.toArray());
    }

    public List<WorkItem> getHistoryWorkItems(Page<WorkItem> page, QueryFilter filter) {
        StringBuilder sql = new StringBuilder();
        sql.append(
                " select distinct o.process_Id, t.order_Id, t.id as id, t.id as task_Id, p.display_Name as process_Name, p.instance_Url, o.parent_Id, o.creator, ");
        sql.append(
                " o.create_Time as order_Create_Time, o.expire_Time as order_Expire_Time, o.order_No, o.variable as order_Variable, ");
        sql.append(
                " t.display_Name as task_Name, t.task_Name as task_Key, t.task_Type, t.perform_Type,t.operator, t.action_Url, ");
        sql.append(
                " t.create_Time as task_Create_Time, t.finish_Time as task_End_Time, t.expire_Time as task_Expire_Time, t.variable as task_Variable ");
        sql.append(" from wf_hist_task t ");
        sql.append(" left join wf_hist_order o on t.order_id = o.id ");
        sql.append(" left join wf_hist_task_actor ta on ta.task_id=t.id ");
        sql.append(" left join wf_process p on p.id = o.process_id ");
        sql.append(" where 1=1 ");
        /**
         * ?sqlwhere?
         */
        List<Object> paramList = new ArrayList<Object>();
        if (filter.getOperators() != null && filter.getOperators().length > 0) {
            sql.append(" and ta.actor_Id in (");
            for (String actor : filter.getOperators()) {
                sql.append("?,");
                paramList.add(actor);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }

        if (StringHelper.isNotEmpty(filter.getProcessId())) {
            sql.append(" and o.process_Id = ?");
            paramList.add(filter.getProcessId());
        }
        if (StringHelper.isNotEmpty(filter.getDisplayName())) {
            sql.append(" and p.display_Name like ?");
            paramList.add("%" + filter.getDisplayName() + "%");
        }
        if (StringHelper.isNotEmpty(filter.getParentId())) {
            sql.append(" and o.parent_Id = ? ");
            paramList.add(filter.getParentId());
        }
        if (StringHelper.isNotEmpty(filter.getOrderId())) {
            sql.append(" and t.order_id = ? ");
            paramList.add(filter.getOrderId());
        }
        if (filter.getNames() != null && filter.getNames().length > 0) {
            sql.append(" and t.task_Name in (");
            for (int i = 0; i < filter.getNames().length; i++) {
                sql.append("?,");
                paramList.add(filter.getNames()[i]);
            }
            sql.deleteCharAt(sql.length() - 1);
            sql.append(") ");
        }
        if (filter.getTaskType() != null) {
            sql.append(" and t.task_Type = ? ");
            paramList.add(filter.getTaskType());
        }
        if (filter.getPerformType() != null) {
            sql.append(" and t.perform_Type = ? ");
            paramList.add(filter.getPerformType());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeStart())) {
            sql.append(" and t.create_Time >= ? ");
            paramList.add(filter.getCreateTimeStart());
        }
        if (StringHelper.isNotEmpty(filter.getCreateTimeEnd())) {
            sql.append(" and t.create_Time <= ? ");
            paramList.add(filter.getCreateTimeEnd());
        }

        if (!filter.isOrderBySetted()) {
            filter.setOrder(QueryFilter.DESC);
            filter.setOrderBy("t.create_Time");
        }
        return queryList(page, filter, WorkItem.class, sql.toString(), paramList.toArray());
    }

    public <T> List<T> queryList(Page<T> page, QueryFilter filter, Class<T> clazz, String sql, Object... args) {
        String orderby = StringHelper.buildPageOrder(filter.getOrder(), filter.getOrderBy());
        String querySQL = sql + orderby;
        if (page == null) {
            return queryList(clazz, querySQL, args);
        }
        String countSQL = "select count(1) from (" + sql + ") c ";
        querySQL = getDialect().getPageSql(querySQL, page);
        if (log.isDebugEnabled()) {
            log.debug("countSQL=\n" + countSQL);
            log.debug("querySQL=\n" + querySQL);
        }
        try {
            Object count = queryCount(countSQL, args);
            List<T> list = queryList(clazz, querySQL, args);
            if (list == null)
                list = Collections.emptyList();
            page.setResult(list);
            page.setTotalCount(ClassHelper.castLong(count));
            return list;
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            return Collections.emptyList();
        }
    }

    /**
     * ?
     */
    public void runScript() {
        String autoStr = ConfigHelper.getProperty("schema.auto");
        if (autoStr == null || !autoStr.equalsIgnoreCase("true")) {
            return;
        }
        Connection conn = null;
        try {
            conn = getConnection();
            if (JdbcHelper.isExec(conn)) {
                log.info("script has completed execution.skip this step");
                return;
            }
            String databaseType = JdbcHelper.getDatabaseType(conn);
            String schema = "db/core/schema-" + databaseType + ".sql";
            ScriptRunner runner = new ScriptRunner(conn, true);
            runner.runScript(schema);
        } catch (Exception e) {
            throw new SnakerException(e);
        } finally {
            try {
                JdbcHelper.close(conn);
            } catch (SQLException e) {
                //ignore
            }
        }
    }

    /**
     * ??
     * @param sql sql?
     * @param args ?
     * @return 
     */
    protected abstract Object queryCount(String sql, Object... args);

    /**
     * ??
     * @return Connection
     */
    protected abstract Connection getConnection() throws SQLException;
}