sqlalchemy达梦数据库驱动 达梦数据库驱动jar包

Activiti支持达梦数据库

1.目的

Activiti现在支持的数据库包括：

Activiti数据库类型	JDBC URL实例	备注
h2	jdbc:h2:tcp://localhost/activiti	默认配置的数据库
mysql	jdbc:mysql://localhost:3306/activiti?autoReconnect=true	使用mysql-connector-java驱动测试
oracle	jdbc:oracle:thin:@localhost:1521:xe
postgres	jdbc:postgresql://localhost:5432/activiti
db2	jdbc:db2://localhost:50000/activiti
mssql	jdbc:sqlserver://localhost:1433/activiti

随着信创国产化的推进，需要用国产数据库来替换上面的数据库。基于达梦数据库对Oracle的高度兼容，我们选择使用达梦数据库作为替代产品。由于Activiti不支持达梦数据库，所以要进行如下的修改。

2.解决方案

2.1 开发环境

2.1.1 相关软件的版本：

软件名称	版本
Activiti	7.0.1 M6
达梦数据库	8.0
dm.jdbc.driver.DmDriver	8.1.1.88

2.1.2 引入达梦数据库连接驱动包

将达梦数据库驱动包“DmJdbcDriver18.jar”文件上传至阿里云私有maven仓库，并通过maven下载引入。

2.1.3 配置数据库连接

在activiti.cfg.xml文件中添加一下内容

<!--数据源配置dbcp-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="dm.jdbc.driver.DmDriver" />
        <property name="url" value="jdbc:dm://192.168.1.109:5236/DAMENG" />
        <property name="username" value="ACTIVITI" />
        <property name="password" value="dameng123" />
    </bean>

2.2 java类

为了使Activiti可以适配达梦数据库，需要修改其部分源代码。将Activiti中相关的源代码拷贝到工程src目录下，保持包路径不变。具体的修改如下：

2.2.1 在org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl，增加成员变量。

public static final String DATABASE_TYPE_DM = "dm";					// 适配达梦数据库，追加成员变量

    public static final String DATABASE_TYPE_H2 = "h2";
    public static final String DATABASE_TYPE_HSQL = "hsql";
    public static final String DATABASE_TYPE_MYSQL = "mysql";
    public static final String DATABASE_TYPE_ORACLE = "oracle";
    public static final String DATABASE_TYPE_POSTGRES = "postgres";
    public static final String DATABASE_TYPE_MSSQL = "mssql";
    public static final String DATABASE_TYPE_DB2 = "db2";

2.2.2 修改org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl 类的 getDefaultDatabaseTypeMappings()方法

public static Properties getDefaultDatabaseTypeMappings() {
        Properties databaseTypeMappings = new Properties();
        
        databaseTypeMappings.setProperty("DM DBMS", DATABASE_TYPE_DM);		// 适配达梦数据库，追加修改

        databaseTypeMappings.setProperty("H2", DATABASE_TYPE_H2);
        databaseTypeMappings.setProperty("HSQL Database Engine", DATABASE_TYPE_HSQL);
        databaseTypeMappings.setProperty("MySQL", DATABASE_TYPE_MYSQL);
        databaseTypeMappings.setProperty("Oracle", DATABASE_TYPE_ORACLE);
        databaseTypeMappings.setProperty("PostgreSQL", DATABASE_TYPE_POSTGRES);
  ......
}

2.2.3 修改org.activiti.engine.impl.db.DbSqlSessionFactory 类的 initBulkInsertEnabledMap(String databaseType)方法

protected void initBulkInsertEnabledMap(String databaseType) {
        bulkInsertableMap = new HashMap<Class<? extends Entity>, Boolean>();

        for (Class<? extends Entity> clazz : EntityDependencyOrder.INSERT_ORDER) {
            bulkInsertableMap.put(clazz, Boolean.TRUE);
        }

        // Only Oracle is making a fuss in one specific case right now
        // 适配达梦数据库，追加修改
        if ("oracle".equals(databaseType) || "dm".equals(databaseType)) {
            bulkInsertableMap.put(EventLogEntryEntityImpl.class, Boolean.FALSE);
        }
    }

2.2.4 修改org.activiti.engine.impl.AbstractQuery 类的 addOrder(String column, String sortOrder, NullHandlingOnOrder nullHandlingOnOrder)方法

if (nullHandlingOnOrder.equals(NullHandlingOnOrder.NULLS_FIRST)) {
                if (ProcessEngineConfigurationImpl.DATABASE_TYPE_H2.equals(databaseType) 
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_HSQL.equals(databaseType)
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_POSTGRES.equals(databaseType) 
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_ORACLE.equals(databaseType)
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_DM.equals(databaseType)) // 适配达梦数据库，追加修改
                {
                   	orderBy = orderBy + defaultOrderByClause + " NULLS FIRST";
                } else if (ProcessEngineConfigurationImpl.DATABASE_TYPE_MYSQL.equals(databaseType)) {
                    orderBy = orderBy + "isnull(" + column + ") desc," + defaultOrderByClause;
                } else if (ProcessEngineConfigurationImpl.DATABASE_TYPE_DB2.equals(databaseType) 
                           || ProcessEngineConfigurationImpl.DATABASE_TYPE_MSSQL.equals(databaseType)) {
                    orderBy = orderBy + "case when " + column + " is null then 0 else 1 end," + defaultOrderByClause;
                } else {
                    orderBy = orderBy + defaultOrderByClause;
                }

            } else if (nullHandlingOnOrder.equals(NullHandlingOnOrder.NULLS_LAST)) {
                if (ProcessEngineConfigurationImpl.DATABASE_TYPE_H2.equals(databaseType) 
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_HSQL.equals(databaseType)
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_POSTGRES.equals(databaseType) 
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_ORACLE.equals(databaseType)
                    || ProcessEngineConfigurationImpl.DATABASE_TYPE_DM.equals(databaseType)) // 适配达梦数据库，追加修改
                {
                    orderBy = orderBy + column + " " + sortOrder + " NULLS LAST";
                } else if (ProcessEngineConfigurationImpl.DATABASE_TYPE_MYSQL.equals(databaseType)) {
                    orderBy = orderBy + "isnull(" + column + ") asc," + defaultOrderByClause;
                } else if (ProcessEngineConfigurationImpl.DATABASE_TYPE_DB2.equals(databaseType) 
                           || ProcessEngineConfigurationImpl.DATABASE_TYPE_MSSQL.equals(databaseType)) {
                    orderBy = orderBy + "case when " + column + " is null then 1 else 0 end," + defaultOrderByClause;
                } else {
                    orderBy = orderBy + defaultOrderByClause;
                }

            }

2.3 资源文件

Activiti在运行期间还会用的一下资源文件，这些文件中有些也与数据库相关，具体修改如下：

2.3.1 为资源文件创建相应的目录，具体的目录结构如下图：

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2.3.2 在create文件件下追加创建数据库表相关的文件。

activiti.dm.create.engine.sql

create table ACT_GE_PROPERTY (
    NAME_ NVARCHAR2(64),
    VALUE_ NVARCHAR2(300),
    REV_ INTEGER,
    primary key (NAME_)
);

insert into ACT_GE_PROPERTY
values ('schema.version', '7.0.0.0', 1);

insert into ACT_GE_PROPERTY
values ('schema.history', 'create(7.0.0.0)', 1);

insert into ACT_GE_PROPERTY
values ('next.dbid', '1', 1);

create table ACT_GE_BYTEARRAY (
    ID_ NVARCHAR2(64),
    REV_ INTEGER,
    NAME_ NVARCHAR2(255),
    DEPLOYMENT_ID_ NVARCHAR2(64),
    BYTES_ BLOB,
    GENERATED_ NUMBER(1,0) CHECK (GENERATED_ IN (1,0)),
    primary key (ID_)
);

create table ACT_RE_DEPLOYMENT (
    ID_ NVARCHAR2(64),
    NAME_ NVARCHAR2(255),
    CATEGORY_ NVARCHAR2(255),
    KEY_ NVARCHAR2(255),
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    DEPLOY_TIME_ TIMESTAMP(6),
    ENGINE_VERSION_ NVARCHAR2(255),
    VERSION_ INTEGER DEFAULT 1,
    PROJECT_RELEASE_VERSION_ NVARCHAR2(255),
    primary key (ID_)
);

create table ACT_RE_MODEL (
    ID_ NVARCHAR2(64) not null,
    REV_ INTEGER,
    NAME_ NVARCHAR2(255),
    KEY_ NVARCHAR2(255),
    CATEGORY_ NVARCHAR2(255),
    CREATE_TIME_ TIMESTAMP(6),
    LAST_UPDATE_TIME_ TIMESTAMP(6),
    VERSION_ INTEGER,
    META_INFO_ NVARCHAR2(2000),
    DEPLOYMENT_ID_ NVARCHAR2(64),
    EDITOR_SOURCE_VALUE_ID_ NVARCHAR2(64),
    EDITOR_SOURCE_EXTRA_VALUE_ID_ NVARCHAR2(64),
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    primary key (ID_)
);

create table ACT_RU_EXECUTION (
    ID_ NVARCHAR2(64),
    REV_ INTEGER,
    PROC_INST_ID_ NVARCHAR2(64),
    BUSINESS_KEY_ NVARCHAR2(255),
    PARENT_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    SUPER_EXEC_ NVARCHAR2(64),
    ROOT_PROC_INST_ID_ NVARCHAR2(64),
    ACT_ID_ NVARCHAR2(255),
    IS_ACTIVE_ NUMBER(1,0) CHECK (IS_ACTIVE_ IN (1,0)),
    IS_CONCURRENT_ NUMBER(1,0) CHECK (IS_CONCURRENT_ IN (1,0)),
    IS_SCOPE_ NUMBER(1,0) CHECK (IS_SCOPE_ IN (1,0)),
    IS_EVENT_SCOPE_ NUMBER(1,0) CHECK (IS_EVENT_SCOPE_ IN (1,0)),
    IS_MI_ROOT_ NUMBER(1,0) CHECK (IS_MI_ROOT_ IN (1,0)),
    SUSPENSION_STATE_ INTEGER,
    CACHED_ENT_STATE_ INTEGER,
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    NAME_ NVARCHAR2(255),
    START_TIME_ TIMESTAMP(6),
    START_USER_ID_ NVARCHAR2(255),
    LOCK_TIME_ TIMESTAMP(6),
    IS_COUNT_ENABLED_ NUMBER(1,0) CHECK (IS_COUNT_ENABLED_ IN (1,0)),
    EVT_SUBSCR_COUNT_ INTEGER,
    TASK_COUNT_ INTEGER,
    JOB_COUNT_ INTEGER,
    TIMER_JOB_COUNT_ INTEGER,
    SUSP_JOB_COUNT_ INTEGER,
    DEADLETTER_JOB_COUNT_ INTEGER,
    VAR_COUNT_ INTEGER,
    ID_LINK_COUNT_ INTEGER,
    APP_VERSION_ INTEGER,
    primary key (ID_)
);

create table ACT_RU_JOB (
    ID_ NVARCHAR2(64) NOT NULL,
    REV_ INTEGER,
    TYPE_ NVARCHAR2(255) NOT NULL,
    LOCK_EXP_TIME_ TIMESTAMP(6),
    LOCK_OWNER_ NVARCHAR2(255),
    EXCLUSIVE_ NUMBER(1,0) CHECK (EXCLUSIVE_ IN (1,0)),
    EXECUTION_ID_ NVARCHAR2(64),
    PROCESS_INSTANCE_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    RETRIES_ INTEGER,
    EXCEPTION_STACK_ID_ NVARCHAR2(64),
    EXCEPTION_MSG_ NVARCHAR2(2000),
    DUEDATE_ TIMESTAMP(6),
    REPEAT_ NVARCHAR2(255),
    HANDLER_TYPE_ NVARCHAR2(255),
    HANDLER_CFG_ NVARCHAR2(2000),
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    primary key (ID_)
);

create table ACT_RU_TIMER_JOB (
    ID_ NVARCHAR2(64) NOT NULL,
    REV_ INTEGER,
    TYPE_ NVARCHAR2(255) NOT NULL,
    LOCK_EXP_TIME_ TIMESTAMP(6),
    LOCK_OWNER_ NVARCHAR2(255),
    EXCLUSIVE_ NUMBER(1,0) CHECK (EXCLUSIVE_ IN (1,0)),
    EXECUTION_ID_ NVARCHAR2(64),
    PROCESS_INSTANCE_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    RETRIES_ INTEGER,
    EXCEPTION_STACK_ID_ NVARCHAR2(64),
    EXCEPTION_MSG_ NVARCHAR2(2000),
    DUEDATE_ TIMESTAMP(6),
    REPEAT_ NVARCHAR2(255),
    HANDLER_TYPE_ NVARCHAR2(255),
    HANDLER_CFG_ NVARCHAR2(2000),
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    primary key (ID_)
);

create table ACT_RU_SUSPENDED_JOB (
    ID_ NVARCHAR2(64) NOT NULL,
    REV_ INTEGER,
    TYPE_ NVARCHAR2(255) NOT NULL,
    EXCLUSIVE_ NUMBER(1,0) CHECK (EXCLUSIVE_ IN (1,0)),
    EXECUTION_ID_ NVARCHAR2(64),
    PROCESS_INSTANCE_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    RETRIES_ INTEGER,
    EXCEPTION_STACK_ID_ NVARCHAR2(64),
    EXCEPTION_MSG_ NVARCHAR2(2000),
    DUEDATE_ TIMESTAMP(6),
    REPEAT_ NVARCHAR2(255),
    HANDLER_TYPE_ NVARCHAR2(255),
    HANDLER_CFG_ NVARCHAR2(2000),
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    primary key (ID_)
);

create table ACT_RU_DEADLETTER_JOB (
    ID_ NVARCHAR2(64) NOT NULL,
    REV_ INTEGER,
    TYPE_ NVARCHAR2(255) NOT NULL,
    EXCLUSIVE_ NUMBER(1,0) CHECK (EXCLUSIVE_ IN (1,0)),
    EXECUTION_ID_ NVARCHAR2(64),
    PROCESS_INSTANCE_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    EXCEPTION_STACK_ID_ NVARCHAR2(64),
    EXCEPTION_MSG_ NVARCHAR2(2000),
    DUEDATE_ TIMESTAMP(6),
    REPEAT_ NVARCHAR2(255),
    HANDLER_TYPE_ NVARCHAR2(255),
    HANDLER_CFG_ NVARCHAR2(2000),
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    primary key (ID_)
);

create table ACT_RE_PROCDEF (
    ID_ NVARCHAR2(64) NOT NULL,
    REV_ INTEGER,
    CATEGORY_ NVARCHAR2(255),
    NAME_ NVARCHAR2(255),
    KEY_ NVARCHAR2(255) NOT NULL,
    VERSION_ INTEGER NOT NULL,
    DEPLOYMENT_ID_ NVARCHAR2(64),
    RESOURCE_NAME_ NVARCHAR2(2000),
    DGRM_RESOURCE_NAME_ varchar(4000),
    DESCRIPTION_ NVARCHAR2(2000),
    HAS_START_FORM_KEY_ NUMBER(1,0) CHECK (HAS_START_FORM_KEY_ IN (1,0)),
    HAS_GRAPHICAL_NOTATION_ NUMBER(1,0) CHECK (HAS_GRAPHICAL_NOTATION_ IN (1,0)),
    SUSPENSION_STATE_ INTEGER,
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    ENGINE_VERSION_ NVARCHAR2(255),
    APP_VERSION_ INTEGER,
    primary key (ID_)
);

create table ACT_RU_TASK (
    ID_ NVARCHAR2(64),
    REV_ INTEGER,
    EXECUTION_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    NAME_ NVARCHAR2(255),
    BUSINESS_KEY_ varchar(255),
    PARENT_TASK_ID_ NVARCHAR2(64),
    DESCRIPTION_ NVARCHAR2(2000),
    TASK_DEF_KEY_ NVARCHAR2(255),
    OWNER_ NVARCHAR2(255),
    ASSIGNEE_ NVARCHAR2(255),
    DELEGATION_ NVARCHAR2(64),
    PRIORITY_ INTEGER,
    CREATE_TIME_ TIMESTAMP(6),
    DUE_DATE_ TIMESTAMP(6),
    CATEGORY_ NVARCHAR2(255),
    SUSPENSION_STATE_ INTEGER,
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    FORM_KEY_ NVARCHAR2(255),
    CLAIM_TIME_ TIMESTAMP(6),
    APP_VERSION_ INTEGER,
    primary key (ID_)
);

create table ACT_RU_IDENTITYLINK (
    ID_ NVARCHAR2(64),
    REV_ INTEGER,
    GROUP_ID_ NVARCHAR2(255),
    TYPE_ NVARCHAR2(255),
    USER_ID_ NVARCHAR2(255),
    TASK_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    primary key (ID_)
);

create table ACT_RU_VARIABLE (
    ID_ NVARCHAR2(64) not null,
    REV_ INTEGER,
    TYPE_ NVARCHAR2(255) not null,
    NAME_ NVARCHAR2(255) not null,
    EXECUTION_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    TASK_ID_ NVARCHAR2(64),
    BYTEARRAY_ID_ NVARCHAR2(64),
    DOUBLE_ NUMBER(*,10),
    LONG_ NUMBER(19,0),
    TEXT_ NVARCHAR2(2000),
    TEXT2_ NVARCHAR2(2000),
    primary key (ID_)
);

create table ACT_RU_EVENT_SUBSCR (
    ID_ NVARCHAR2(64) not null,
    REV_ integer,
    EVENT_TYPE_ NVARCHAR2(255) not null,
    EVENT_NAME_ NVARCHAR2(255),
    EXECUTION_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    ACTIVITY_ID_ NVARCHAR2(64),
    CONFIGURATION_ NVARCHAR2(255),
    CREATED_ TIMESTAMP(6) not null,
    PROC_DEF_ID_ NVARCHAR2(64),
    TENANT_ID_ NVARCHAR2(255) DEFAULT '',
    primary key (ID_)
);

create table ACT_EVT_LOG (
    LOG_NR_ NUMBER(19),
    TYPE_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    EXECUTION_ID_ NVARCHAR2(64),
    TASK_ID_ NVARCHAR2(64),
    TIME_STAMP_ TIMESTAMP(6) not null,
    USER_ID_ NVARCHAR2(255),
    DATA_ BLOB,
    LOCK_OWNER_ NVARCHAR2(255),
    LOCK_TIME_ TIMESTAMP(6) null,
    IS_PROCESSED_ NUMBER(3) default 0,
    primary key (LOG_NR_)
);

create sequence act_evt_log_seq;

create table ACT_PROCDEF_INFO (
	ID_ NVARCHAR2(64) not null,
    PROC_DEF_ID_ NVARCHAR2(64) not null,
    REV_ integer,
    INFO_JSON_ID_ NVARCHAR2(64),
    primary key (ID_)
);

create table ACT_RU_INTEGRATION (
    ID_ NVARCHAR2(64) not null,
    EXECUTION_ID_ NVARCHAR2(64),
    PROCESS_INSTANCE_ID_ NVARCHAR2(64),
    PROC_DEF_ID_ NVARCHAR2(64),
    FLOW_NODE_ID_ NVARCHAR2(64),
    CREATED_DATE_ TIMESTAMP(6),
    primary key (ID_)
);

create index ACT_IDX_EXEC_BUSKEY on ACT_RU_EXECUTION(BUSINESS_KEY_);
create index ACT_IDX_EXEC_ROOT on ACT_RU_EXECUTION(ROOT_PROC_INST_ID_);
create index ACT_IDX_TASK_CREATE on ACT_RU_TASK(CREATE_TIME_);
create index ACT_IDX_IDENT_LNK_USER on ACT_RU_IDENTITYLINK(USER_ID_);
create index ACT_IDX_IDENT_LNK_GROUP on ACT_RU_IDENTITYLINK(GROUP_ID_);
create index ACT_IDX_EVENT_SUBSCR_CONFIG_ on ACT_RU_EVENT_SUBSCR(CONFIGURATION_);
create index ACT_IDX_VARIABLE_TASK_ID on ACT_RU_VARIABLE(TASK_ID_);

create index ACT_IDX_BYTEAR_DEPL on ACT_GE_BYTEARRAY(DEPLOYMENT_ID_);
alter table ACT_GE_BYTEARRAY
    add constraint ACT_FK_BYTEARR_DEPL
    foreign key (DEPLOYMENT_ID_)
    references ACT_RE_DEPLOYMENT (ID_);

alter table ACT_RE_PROCDEF
    add constraint ACT_UNIQ_PROCDEF
    unique (KEY_,VERSION_, TENANT_ID_);

create index ACT_IDX_EXE_PROCINST on ACT_RU_EXECUTION(PROC_INST_ID_);
alter table ACT_RU_EXECUTION
    add constraint ACT_FK_EXE_PROCINST
    foreign key (PROC_INST_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_EXE_PARENT on ACT_RU_EXECUTION(PARENT_ID_);
alter table ACT_RU_EXECUTION
    add constraint ACT_FK_EXE_PARENT
    foreign key (PARENT_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_EXE_SUPER on ACT_RU_EXECUTION(SUPER_EXEC_);
alter table ACT_RU_EXECUTION
    add constraint ACT_FK_EXE_SUPER
    foreign key (SUPER_EXEC_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_EXE_PROCDEF on ACT_RU_EXECUTION(PROC_DEF_ID_);
alter table ACT_RU_EXECUTION
    add constraint ACT_FK_EXE_PROCDEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

create index ACT_IDX_TSKASS_TASK on ACT_RU_IDENTITYLINK(TASK_ID_);
alter table ACT_RU_IDENTITYLINK
    add constraint ACT_FK_TSKASS_TASK
    foreign key (TASK_ID_)
    references ACT_RU_TASK (ID_);

create index ACT_IDX_ATHRZ_PROCEDEF  on ACT_RU_IDENTITYLINK(PROC_DEF_ID_);
alter table ACT_RU_IDENTITYLINK
    add constraint ACT_FK_ATHRZ_PROCEDEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

create index ACT_IDX_IDL_PROCINST on ACT_RU_IDENTITYLINK(PROC_INST_ID_);
alter table ACT_RU_IDENTITYLINK
    add constraint ACT_FK_IDL_PROCINST
    foreign key (PROC_INST_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_TASK_EXEC on ACT_RU_TASK(EXECUTION_ID_);
alter table ACT_RU_TASK
    add constraint ACT_FK_TASK_EXE
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_TASK_PROCINST on ACT_RU_TASK(PROC_INST_ID_);
alter table ACT_RU_TASK
    add constraint ACT_FK_TASK_PROCINST
    foreign key (PROC_INST_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_TASK_PROCDEF on ACT_RU_TASK(PROC_DEF_ID_);
alter table ACT_RU_TASK
  add constraint ACT_FK_TASK_PROCDEF
  foreign key (PROC_DEF_ID_)
  references ACT_RE_PROCDEF (ID_);

create index ACT_IDX_VAR_EXE on ACT_RU_VARIABLE(EXECUTION_ID_);
alter table ACT_RU_VARIABLE
    add constraint ACT_FK_VAR_EXE
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_VAR_PROCINST on ACT_RU_VARIABLE(PROC_INST_ID_);
alter table ACT_RU_VARIABLE
    add constraint ACT_FK_VAR_PROCINST
    foreign key (PROC_INST_ID_)
    references ACT_RU_EXECUTION(ID_);

create index ACT_IDX_VAR_BYTEARRAY on ACT_RU_VARIABLE(BYTEARRAY_ID_);
alter table ACT_RU_VARIABLE
    add constraint ACT_FK_VAR_BYTEARRAY
    foreign key (BYTEARRAY_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_JOB_EXECUTION_ID on ACT_RU_JOB(EXECUTION_ID_);
alter table ACT_RU_JOB
    add constraint ACT_FK_JOB_EXECUTION
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_JOB_PROC_INST_ID on ACT_RU_JOB(PROCESS_INSTANCE_ID_);
alter table ACT_RU_JOB
    add constraint ACT_FK_JOB_PROCESS_INSTANCE
    foreign key (PROCESS_INSTANCE_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_JOB_PROC_DEF_ID on ACT_RU_JOB(PROC_DEF_ID_);
alter table ACT_RU_JOB
    add constraint ACT_FK_JOB_PROC_DEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

create index ACT_IDX_JOB_EXCEPTION on ACT_RU_JOB(EXCEPTION_STACK_ID_);
alter table ACT_RU_JOB
    add constraint ACT_FK_JOB_EXCEPTION
    foreign key (EXCEPTION_STACK_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_TJOB_EXECUTION_ID on ACT_RU_TIMER_JOB(EXECUTION_ID_);
alter table ACT_RU_TIMER_JOB
    add constraint ACT_FK_TJOB_EXECUTION
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_TJOB_PROC_INST_ID on ACT_RU_TIMER_JOB(PROCESS_INSTANCE_ID_);
alter table ACT_RU_TIMER_JOB
    add constraint ACT_FK_TJOB_PROCESS_INSTANCE
    foreign key (PROCESS_INSTANCE_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_TJOB_PROC_DEF_ID on ACT_RU_TIMER_JOB(PROC_DEF_ID_);
alter table ACT_RU_TIMER_JOB
    add constraint ACT_FK_TJOB_PROC_DEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

create index ACT_IDX_TJOB_EXCEPTION on ACT_RU_TIMER_JOB(EXCEPTION_STACK_ID_);
alter table ACT_RU_TIMER_JOB
    add constraint ACT_FK_TJOB_EXCEPTION
    foreign key (EXCEPTION_STACK_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_SJOB_EXECUTION_ID on ACT_RU_SUSPENDED_JOB(EXECUTION_ID_);
alter table ACT_RU_SUSPENDED_JOB
    add constraint ACT_FK_SJOB_EXECUTION
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_SJOB_PROC_INST_ID on ACT_RU_SUSPENDED_JOB(PROCESS_INSTANCE_ID_);
alter table ACT_RU_SUSPENDED_JOB
    add constraint ACT_FK_SJOB_PROCESS_INSTANCE
    foreign key (PROCESS_INSTANCE_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_SJOB_PROC_DEF_ID on ACT_RU_SUSPENDED_JOB(PROC_DEF_ID_);
alter table ACT_RU_SUSPENDED_JOB
    add constraint ACT_FK_SJOB_PROC_DEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

create index ACT_IDX_SJOB_EXCEPTION on ACT_RU_SUSPENDED_JOB(EXCEPTION_STACK_ID_);
alter table ACT_RU_SUSPENDED_JOB
    add constraint ACT_FK_SJOB_EXCEPTION
    foreign key (EXCEPTION_STACK_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_DJOB_EXECUTION_ID on ACT_RU_DEADLETTER_JOB(EXECUTION_ID_);
alter table ACT_RU_DEADLETTER_JOB
    add constraint ACT_FK_DJOB_EXECUTION
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_DJOB_PROC_INST_ID on ACT_RU_DEADLETTER_JOB(PROCESS_INSTANCE_ID_);
alter table ACT_RU_DEADLETTER_JOB
    add constraint ACT_FK_DJOB_PROCESS_INSTANCE
    foreign key (PROCESS_INSTANCE_ID_)
    references ACT_RU_EXECUTION (ID_);

create index ACT_IDX_DJOB_PROC_DEF_ID on ACT_RU_DEADLETTER_JOB(PROC_DEF_ID_);
alter table ACT_RU_DEADLETTER_JOB
    add constraint ACT_FK_DJOB_PROC_DEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

create index ACT_IDX_DJOB_EXCEPTION on ACT_RU_DEADLETTER_JOB(EXCEPTION_STACK_ID_);
alter table ACT_RU_DEADLETTER_JOB
    add constraint ACT_FK_DJOB_EXCEPTION
    foreign key (EXCEPTION_STACK_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_EVENT_SUBSCR on ACT_RU_EVENT_SUBSCR(EXECUTION_ID_);
alter table ACT_RU_EVENT_SUBSCR
    add constraint ACT_FK_EVENT_EXEC
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION(ID_);

create index ACT_IDX_MODEL_SOURCE on ACT_RE_MODEL(EDITOR_SOURCE_VALUE_ID_);
alter table ACT_RE_MODEL
    add constraint ACT_FK_MODEL_SOURCE
    foreign key (EDITOR_SOURCE_VALUE_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_MODEL_SOURCE_EXTRA on ACT_RE_MODEL(EDITOR_SOURCE_EXTRA_VALUE_ID_);
alter table ACT_RE_MODEL
    add constraint ACT_FK_MODEL_SOURCE_EXTRA
    foreign key (EDITOR_SOURCE_EXTRA_VALUE_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_MODEL_DEPLOYMENT on ACT_RE_MODEL(DEPLOYMENT_ID_);
alter table ACT_RE_MODEL
    add constraint ACT_FK_MODEL_DEPLOYMENT
    foreign key (DEPLOYMENT_ID_)
    references ACT_RE_DEPLOYMENT (ID_);

create index ACT_IDX_PROCDEF_INFO_JSON on ACT_PROCDEF_INFO(INFO_JSON_ID_);
alter table ACT_PROCDEF_INFO
    add constraint ACT_FK_INFO_JSON_BA
    foreign key (INFO_JSON_ID_)
    references ACT_GE_BYTEARRAY (ID_);

create index ACT_IDX_PROCDEF_INFO_PROC on ACT_PROCDEF_INFO(PROC_DEF_ID_);
alter table ACT_PROCDEF_INFO
    add constraint ACT_FK_INFO_PROCDEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

alter table ACT_PROCDEF_INFO
    add constraint ACT_UNIQ_INFO_PROCDEF
    unique (PROC_DEF_ID_);

alter table ACT_RU_INTEGRATION
    add constraint ACT_FK_INT_EXECUTION
    foreign key (EXECUTION_ID_)
    references ACT_RU_EXECUTION (ID_)
    on delete cascade;

alter table ACT_RU_INTEGRATION
    add constraint ACT_FK_INT_PROC_INST
    foreign key (PROCESS_INSTANCE_ID_)
    references ACT_RU_EXECUTION (ID_);

alter table ACT_RU_INTEGRATION
    add constraint ACT_FK_INT_PROC_DEF
    foreign key (PROC_DEF_ID_)
    references ACT_RE_PROCDEF (ID_);

activiti.dm.create.history.sql

create table ACT_HI_PROCINST (
    ID_ NVARCHAR2(64) not null,
    PROC_INST_ID_ NVARCHAR2(64) not null,
    BUSINESS_KEY_ NVARCHAR2(255),
    PROC_DEF_ID_ NVARCHAR2(64) not null,
    START_TIME_ TIMESTAMP(6) not null,
    END_TIME_ TIMESTAMP(6),
    DURATION_ NUMBER(19,0),
    START_USER_ID_ NVARCHAR2(255),
    START_ACT_ID_ NVARCHAR2(255),
    END_ACT_ID_ NVARCHAR2(255),
    SUPER_PROCESS_INSTANCE_ID_ NVARCHAR2(64),
    DELETE_REASON_ NVARCHAR2(2000),
    TENANT_ID_ NVARCHAR2(255) default '',
    NAME_ NVARCHAR2(255),
    primary key (ID_),
    unique (PROC_INST_ID_)
);

create table ACT_HI_ACTINST (
    ID_ NVARCHAR2(64) not null,
    PROC_DEF_ID_ NVARCHAR2(64) not null,
    PROC_INST_ID_ NVARCHAR2(64) not null,
    EXECUTION_ID_ NVARCHAR2(64) not null,
    ACT_ID_ NVARCHAR2(255) not null,
    TASK_ID_ NVARCHAR2(64),
    CALL_PROC_INST_ID_ NVARCHAR2(64),
    ACT_NAME_ NVARCHAR2(255),
    ACT_TYPE_ NVARCHAR2(255) not null,
    ASSIGNEE_ NVARCHAR2(255),
    START_TIME_ TIMESTAMP(6) not null,
    END_TIME_ TIMESTAMP(6),
    DURATION_ NUMBER(19,0),
    DELETE_REASON_ NVARCHAR2(2000),
    TENANT_ID_ NVARCHAR2(255) default '',
    primary key (ID_)
);

create table ACT_HI_TASKINST (
    ID_ NVARCHAR2(64) not null,
    PROC_DEF_ID_ NVARCHAR2(64),
    TASK_DEF_KEY_ NVARCHAR2(255),
    PROC_INST_ID_ NVARCHAR2(64),
    EXECUTION_ID_ NVARCHAR2(64),
    PARENT_TASK_ID_ NVARCHAR2(64),
    NAME_ NVARCHAR2(255),
    DESCRIPTION_ NVARCHAR2(2000),
    OWNER_ NVARCHAR2(255),
    ASSIGNEE_ NVARCHAR2(255),
    START_TIME_ TIMESTAMP(6) not null,
    CLAIM_TIME_ TIMESTAMP(6),
    END_TIME_ TIMESTAMP(6),
    DURATION_ NUMBER(19,0),
    DELETE_REASON_ NVARCHAR2(2000),
    PRIORITY_ INTEGER,
    DUE_DATE_ TIMESTAMP(6),
    FORM_KEY_ NVARCHAR2(255),
    CATEGORY_ NVARCHAR2(255),
    TENANT_ID_ NVARCHAR2(255) default '',
    primary key (ID_)
);

create table ACT_HI_VARINST (
    ID_ NVARCHAR2(64) not null,
    PROC_INST_ID_ NVARCHAR2(64),
    EXECUTION_ID_ NVARCHAR2(64),
    TASK_ID_ NVARCHAR2(64),
    NAME_ NVARCHAR2(255) not null,
    VAR_TYPE_ NVARCHAR2(100),
    REV_ INTEGER,
    BYTEARRAY_ID_ NVARCHAR2(64),
    DOUBLE_ NUMBER(*,10),
    LONG_ NUMBER(19,0),
    TEXT_ NVARCHAR2(2000),
    TEXT2_ NVARCHAR2(2000),
    CREATE_TIME_ TIMESTAMP(6),
    LAST_UPDATED_TIME_ TIMESTAMP(6),
    primary key (ID_)
);

create table ACT_HI_DETAIL (
    ID_ NVARCHAR2(64) not null,
    TYPE_ NVARCHAR2(255) not null,
    PROC_INST_ID_ NVARCHAR2(64),
    EXECUTION_ID_ NVARCHAR2(64),
    TASK_ID_ NVARCHAR2(64),
    ACT_INST_ID_ NVARCHAR2(64),
    NAME_ NVARCHAR2(255) not null,
    VAR_TYPE_ NVARCHAR2(64),
    REV_ INTEGER,
    TIME_ TIMESTAMP(6) not null,
    BYTEARRAY_ID_ NVARCHAR2(64),
    DOUBLE_ NUMBER(*,10),
    LONG_ NUMBER(19,0),
    TEXT_ NVARCHAR2(2000),
    TEXT2_ NVARCHAR2(2000),
    primary key (ID_)
);

create table ACT_HI_COMMENT (
    ID_ NVARCHAR2(64) not null,
    TYPE_ NVARCHAR2(255),
    TIME_ TIMESTAMP(6) not null,
    USER_ID_ NVARCHAR2(255),
    TASK_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    ACTION_ NVARCHAR2(255),
    MESSAGE_ NVARCHAR2(2000),
    FULL_MSG_ BLOB,
    primary key (ID_)
);

create table ACT_HI_ATTACHMENT (
    ID_ NVARCHAR2(64) not null,
    REV_ INTEGER,
    USER_ID_ NVARCHAR2(255),
    NAME_ NVARCHAR2(255),
    DESCRIPTION_ NVARCHAR2(2000),
    TYPE_ NVARCHAR2(255),
    TASK_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    URL_ NVARCHAR2(2000),
    CONTENT_ID_ NVARCHAR2(64),
    TIME_ TIMESTAMP(6),
    primary key (ID_)
);

create table ACT_HI_IDENTITYLINK (
    ID_ NVARCHAR2(64),
    GROUP_ID_ NVARCHAR2(255),
    TYPE_ NVARCHAR2(255),
    USER_ID_ NVARCHAR2(255),
    TASK_ID_ NVARCHAR2(64),
    PROC_INST_ID_ NVARCHAR2(64),
    primary key (ID_)
);

create index ACT_IDX_HI_PRO_INST_END on ACT_HI_PROCINST(END_TIME_);
create index ACT_IDX_HI_PRO_I_BUSKEY on ACT_HI_PROCINST(BUSINESS_KEY_);
create index ACT_IDX_HI_ACT_INST_START on ACT_HI_ACTINST(START_TIME_);
create index ACT_IDX_HI_ACT_INST_END on ACT_HI_ACTINST(END_TIME_);
create index ACT_IDX_HI_DETAIL_PROC_INST on ACT_HI_DETAIL(PROC_INST_ID_);
create index ACT_IDX_HI_DETAIL_ACT_INST on ACT_HI_DETAIL(ACT_INST_ID_);
create index ACT_IDX_HI_DETAIL_TIME on ACT_HI_DETAIL(TIME_);
create index ACT_IDX_HI_DETAIL_NAME on ACT_HI_DETAIL(NAME_);
create index ACT_IDX_HI_DETAIL_TASK_ID on ACT_HI_DETAIL(TASK_ID_);
create index ACT_IDX_HI_PROCVAR_PROC_INST on ACT_HI_VARINST(PROC_INST_ID_);
create index ACT_IDX_HI_PROCVAR_NAME_TYPE on ACT_HI_VARINST(NAME_, VAR_TYPE_);
create index ACT_IDX_HI_PROCVAR_TASK_ID on ACT_HI_VARINST(TASK_ID_);
create index ACT_IDX_HI_IDENT_LNK_USER on ACT_HI_IDENTITYLINK(USER_ID_);
create index ACT_IDX_HI_IDENT_LNK_TASK on ACT_HI_IDENTITYLINK(TASK_ID_);
create index ACT_IDX_HI_IDENT_LNK_PROCINST on ACT_HI_IDENTITYLINK(PROC_INST_ID_);

create index ACT_IDX_HI_ACT_INST_PROCINST on ACT_HI_ACTINST(PROC_INST_ID_, ACT_ID_);
create index ACT_IDX_HI_ACT_INST_EXEC on ACT_HI_ACTINST(EXECUTION_ID_, ACT_ID_);
create index ACT_IDX_HI_TASK_INST_PROCINST on ACT_HI_TASKINST(PROC_INST_ID_);

2.3.3 在drop目录中追加删除数据库表的文件

activiti.dm.drop.engine.sql

drop index ACT_IDX_BYTEAR_DEPL;
drop index ACT_IDX_EXE_PROCINST;
drop index ACT_IDX_EXE_PARENT;
drop index ACT_IDX_EXE_SUPER;
drop index ACT_IDX_TSKASS_TASK;
drop index ACT_IDX_TASK_EXEC;
drop index ACT_IDX_TASK_PROCINST;
drop index ACT_IDX_TASK_PROCDEF;
drop index ACT_IDX_VAR_EXE;
drop index ACT_IDX_VAR_PROCINST;
drop index ACT_IDX_VAR_BYTEARRAY;
drop index ACT_IDX_JOB_EXECUTION_ID;
drop index ACT_IDX_JOB_PROC_INST_ID;
drop index ACT_IDX_JOB_PROC_DEF_ID;
drop index ACT_IDX_JOB_EXCEPTION;
drop index ACT_IDX_TJOB_EXECUTION_ID;
drop index ACT_IDX_TJOB_PROC_INST_ID;
drop index ACT_IDX_TJOB_PROC_DEF_ID;
drop index ACT_IDX_TJOB_EXCEPTION;    
drop index ACT_IDX_SJOB_EXECUTION_ID;    
drop index ACT_IDX_SJOB_PROC_INST_ID;    
drop index ACT_IDX_SJOB_PROC_DEF_ID;    
drop index ACT_IDX_SJOB_EXCEPTION;    
drop index ACT_IDX_DJOB_EXECUTION_ID;      
drop index ACT_IDX_DJOB_PROC_INST_ID;        
drop index ACT_IDX_DJOB_PROC_DEF_ID;    
drop index ACT_IDX_DJOB_EXCEPTION;
drop index ACT_IDX_MODEL_SOURCE;
drop index ACT_IDX_MODEL_SOURCE_EXTRA;
drop index ACT_IDX_MODEL_DEPLOYMENT;
drop index ACT_IDX_PROCDEF_INFO_JSON;

drop index ACT_IDX_EXEC_BUSKEY;
drop index ACT_IDX_TASK_CREATE;
drop index ACT_IDX_IDENT_LNK_USER;
drop index ACT_IDX_IDENT_LNK_GROUP;
drop index ACT_IDX_VARIABLE_TASK_ID;

alter table ACT_GE_BYTEARRAY 
    drop CONSTRAINT ACT_FK_BYTEARR_DEPL;

alter table ACT_RU_EXECUTION
    drop CONSTRAINT ACT_FK_EXE_PROCINST;

alter table ACT_RU_EXECUTION 
    drop CONSTRAINT ACT_FK_EXE_PARENT;

alter table ACT_RU_EXECUTION 
    drop CONSTRAINT ACT_FK_EXE_SUPER;
	
alter table ACT_RU_EXECUTION 
    drop CONSTRAINT ACT_FK_EXE_PROCDEF;
    
alter table ACT_RU_IDENTITYLINK
    drop CONSTRAINT ACT_FK_TSKASS_TASK;

alter table ACT_RU_IDENTITYLINK
    drop CONSTRAINT ACT_FK_ATHRZ_PROCEDEF;

alter table ACT_RU_TASK
	drop CONSTRAINT ACT_FK_TASK_EXE;

alter table ACT_RU_TASK
	drop CONSTRAINT ACT_FK_TASK_PROCINST;
	
alter table ACT_RU_TASK
	drop CONSTRAINT ACT_FK_TASK_PROCDEF;
    
alter table ACT_RU_VARIABLE
    drop CONSTRAINT ACT_FK_VAR_EXE;
    
alter table ACT_RU_VARIABLE
	drop CONSTRAINT ACT_FK_VAR_PROCINST;

alter table ACT_RU_VARIABLE
    drop CONSTRAINT ACT_FK_VAR_BYTEARRAY;
    
alter table ACT_RU_JOB 
    drop CONSTRAINT ACT_FK_JOB_EXECUTION;
    
alter table ACT_RU_JOB 
    drop CONSTRAINT ACT_FK_JOB_PROCESS_INSTANCE;
    
alter table ACT_RU_JOB 
    drop CONSTRAINT ACT_FK_JOB_PROC_DEF;

alter table ACT_RU_JOB 
    drop CONSTRAINT ACT_FK_JOB_EXCEPTION;
    
alter table ACT_RU_TIMER_JOB 
    drop CONSTRAINT ACT_FK_TJOB_EXECUTION;
    
alter table ACT_RU_TIMER_JOB 
    drop CONSTRAINT ACT_FK_TJOB_PROCESS_INSTANCE;
    
alter table ACT_RU_TIMER_JOB 
    drop CONSTRAINT ACT_FK_TJOB_PROC_DEF;
    
alter table ACT_RU_TIMER_JOB 
    drop CONSTRAINT ACT_FK_TJOB_EXCEPTION;
    
alter table ACT_RU_SUSPENDED_JOB 
    drop CONSTRAINT ACT_FK_SJOB_EXECUTION;
    
alter table ACT_RU_SUSPENDED_JOB 
    drop CONSTRAINT ACT_FK_SJOB_PROCESS_INSTANCE;
    
alter table ACT_RU_SUSPENDED_JOB 
    drop CONSTRAINT ACT_FK_SJOB_PROC_DEF;
    
alter table ACT_RU_SUSPENDED_JOB 
    drop CONSTRAINT ACT_FK_SJOB_EXCEPTION;
    
alter table ACT_RU_DEADLETTER_JOB 
    drop CONSTRAINT ACT_FK_DJOB_EXECUTION;
    
alter table ACT_RU_DEADLETTER_JOB 
    drop CONSTRAINT ACT_FK_DJOB_PROCESS_INSTANCE;
    
alter table ACT_RU_DEADLETTER_JOB 
    drop CONSTRAINT ACT_FK_DJOB_PROC_DEF;
    
alter table ACT_RU_DEADLETTER_JOB 
    drop CONSTRAINT ACT_FK_DJOB_EXCEPTION;
    
alter table ACT_RU_EVENT_SUBSCR
    drop CONSTRAINT ACT_FK_EVENT_EXEC;

alter table ACT_RE_PROCDEF
    drop CONSTRAINT ACT_UNIQ_PROCDEF;

alter table ACT_RE_MODEL
    drop CONSTRAINT ACT_FK_MODEL_SOURCE;

alter table ACT_RE_MODEL
    drop CONSTRAINT ACT_FK_MODEL_SOURCE_EXTRA;
    
alter table ACT_RE_MODEL
    drop CONSTRAINT ACT_FK_MODEL_DEPLOYMENT;
    
alter table ACT_PROCDEF_INFO
    drop CONSTRAINT ACT_UNIQ_INFO_PROCDEF;

alter table ACT_PROCDEF_INFO
    drop CONSTRAINT ACT_FK_INFO_JSON_BA;
    
alter table ACT_PROCDEF_INFO
    drop CONSTRAINT ACT_FK_INFO_PROCDEF;

alter table ACT_RU_INTEGRATION
    drop CONSTRAINT ACT_FK_INT_EXECUTION;

alter table ACT_RU_INTEGRATION
    drop CONSTRAINT ACT_FK_INT_PROC_INST;

alter table ACT_RU_INTEGRATION
    drop CONSTRAINT ACT_FK_INT_PROC_DEF;

drop index ACT_IDX_EVENT_SUBSCR_CONFIG_;
drop index ACT_IDX_EVENT_SUBSCR;
drop index ACT_IDX_ATHRZ_PROCEDEF;
drop index ACT_IDX_PROCDEF_INFO_PROC;

drop table ACT_GE_PROPERTY;
drop table ACT_GE_BYTEARRAY;
drop table ACT_RE_DEPLOYMENT;
drop table ACT_RE_MODEL;
drop table ACT_RE_PROCDEF;
drop table ACT_RU_IDENTITYLINK;
drop table ACT_RU_VARIABLE;
drop table ACT_RU_TASK;
drop table ACT_RU_EXECUTION;
drop table ACT_RU_JOB;
drop table ACT_RU_TIMER_JOB;
drop table ACT_RU_SUSPENDED_JOB;
drop table ACT_RU_DEADLETTER_JOB;
drop table ACT_RU_EVENT_SUBSCR;

drop sequence act_evt_log_seq;
drop table ACT_EVT_LOG;
drop table ACT_PROCDEF_INFO;
drop table ACT_RU_INTEGRATION;

activiti.dm.drop.history.sql

drop index ACT_IDX_HI_PRO_INST_END;
drop index ACT_IDX_HI_PRO_I_BUSKEY;
drop index ACT_IDX_HI_ACT_INST_START;
drop index ACT_IDX_HI_ACT_INST_END;
drop index ACT_IDX_HI_DETAIL_PROC_INST;
drop index ACT_IDX_HI_DETAIL_ACT_INST;
drop index ACT_IDX_HI_DETAIL_TIME;
drop index ACT_IDX_HI_DETAIL_NAME;
drop index ACT_IDX_HI_DETAIL_TASK_ID;
drop index ACT_IDX_HI_PROCVAR_PROC_INST;
drop index ACT_IDX_HI_PROCVAR_NAME_TYPE;
drop index ACT_IDX_HI_ACT_INST_PROCINST;
drop index ACT_IDX_HI_IDENT_LNK_USER;
drop index ACT_IDX_HI_IDENT_LNK_TASK;
drop index ACT_IDX_HI_IDENT_LNK_PROCINST;
drop index ACT_IDX_HI_TASK_INST_PROCINST;

drop table ACT_HI_PROCINST;
drop table ACT_HI_ACTINST;
drop table ACT_HI_VARINST;
drop table ACT_HI_TASKINST;
drop table ACT_HI_DETAIL;
drop table ACT_HI_COMMENT;
drop table ACT_HI_ATTACHMENT;
drop table ACT_HI_IDENTITYLINK;

2.3.4 在properties目录中追加达梦数据库相关配置文件

dm.properties

limitAfter=LIMIT #{maxResults} OFFSET #{firstResult}

2.3.5 在upgrade目录中追加由于版本升级造成数据库表结构变更的文件

因为我们使用的Activiti的版本比较新，涉及的版本升级只有两个文件，具体内容如下：

activiti.dm.upgradestep.7000.to.7100.engine.sql

update ACT_GE_PROPERTY set VALUE_ = '7.1.0.0' where NAME_ = 'schema.version';

alter table ACT_RE_DEPLOYMENT add column VERSION_ INTEGER default 1;
alter table ACT_RE_DEPLOYMENT add column PROJECT_RELEASE_VERSION_ NVARCHAR2(255);

activiti.dm.upgradestep.7100.to.710-M6.engine.sql

update ACT_GE_PROPERTY set VALUE_ = '7.1.0-M6' where NAME_ = 'schema.version';

alter table ACT_RE_PROCDEF add column APP_VERSION_ integer;
alter table ACT_RU_TASK add column APP_VERSION_ integer;
alter table ACT_RU_EXECUTION add column APP_VERSION_ integer;

alter table ACT_RU_TASK add column BUSINESS_KEY_ NVARCHAR2(255);

至此所有的修改已经完成，重新编译启动即可。