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

insert into ACT_GE_PROPERTY
values ('schema.version', '5.12-SNAPSHOT', 1);

insert into ACT_GE_PROPERTY
values ('schema.history', 'create(5.12-SNAPSHOT)', 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),
    DEPLOY_TIME_ TIMESTAMP(6),
    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),
    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)),
    SUSPENSION_STATE_ INTEGER,
    CACHED_ENT_STATE_ 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),
    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),
    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)),
    SUSPENSION_STATE_ 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),
    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),
    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_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,
    primary key (ID_)
);

create index ACT_IDX_EXEC_BUSKEY on ACT_RU_EXECUTION(BUSINESS_KEY_);
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_);
    
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_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_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_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_);
    
-- see http://stackoverflow.com/questions/675398/how-can-i-constrain-multiple-columns-to-prevent-duplicates-but-ignore-null-value
create unique index ACT_UNIQ_RU_BUS_KEY on ACT_RU_EXECUTION
   (case when BUSINESS_KEY_ is null then null else PROC_DEF_ID_ end,
    case when BUSINESS_KEY_ is null then null else BUSINESS_KEY_ end);