Problem in creating Rule Class

Question

I am trying to build a Rules Application..I am totally a novice in this..Following the examples given in documentation i am trying to do it..
These are the steps i have donr till now..
CREATE or REPLACE TYPE Account_History AS OBJECT (
Account_Id VARCHAR2(20),
Transaction_Month DATE,
AvgCash_NonCashTxnRatio FLOAT);
CREATE or REPLACE TYPE Account_Current AS OBJECT (
Account_Id VARCHAR2(20),
Transaction_Month DATE,
Cash_oNonCashTxnRatioCur_Mnth FLOAT);
BEGIN
DBMS_RLMGR.CREATE_EVENT_STRUCT (EVENT_STRUCT => 'AccntCompEvent');
DBMS_RLMGR.ADD_ELEMENTARY_ATTRIBUTE (
                       EVENT_STRUCT => 'AccntCompEvent',
                       ATTR_NAME => 'Acnt_Hist',
                       TAB_ALIAS => RLM$TABLE_ALIAS('STATISTICS_MV'));
DBMS_RLMGR.ADD_ELEMENTARY_ATTRIBUTE (
                       EVENT_STRUCT => 'AccntCompEvent',
                       ATTR_NAME => 'Acnt_Curr',
                       TAB_ALIAS => RLM$TABLE_ALIAS('CURRENT_RATIO'));
END;
BEGIN
   dbms_rlmgr.create_rule_class (
               rule_class    => 'Account_Rules',
               event_struct  => 'AccntCompEvent',
               action_cbk    => 'RuleExecute',
               rslt_viewnm   => 'RuleExecuteView',
               actprf_spec   => 'Action1  VARCHAR2(20),
                                 Action2  VARCHAR2(20)',
               rlcls_prop    => '<composite equal="Acnt_Hist.Account_Id, Acnt_Curr.Account_Id"/>');
END;But when i am trying to create the Rule Class, i get error saying that
Error report:
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "EXFSYS.DBMS_RLMGR", line 686
ORA-06512: at line 2
06502. 00000 -  "PL/SQL: numeric or value error%s"
*Cause:   
*Action:What is the problem in the code..Can anyone help me fix it..Please..
I want to form a rule which checks if the Cash_oNonCashTxnRatioCur_Mnth is greater than 5 times the value in AvgCash_NonCashTxnRatio..how do i form a rule for this...Please give me some suggestions..
Can anyone suggest me some good links where i can get more about Oracle Rules Manager..

Answer 1

Please tell me, if i am creating the rules correctly ot not.. As u suggested to use &lt; instead of '<'.. When i execute the following, it asks me to enter a value for LT.. When i enter <, it throws me a XML Parser error..as follows:
INSERT INTO ACCOUNT_RULES (rlm$ruleid, RLM$RULEDESC, rlm$rulecond)
VALUES ('Rule1', 'DepositFollowedbyATMWithdrawalatODDTime',
'<condition>
     <and join="Acnt_Stats_Hist.AvgCash_NonCashTxnRatio * 5 &lt; Acnt_Stats_Curr.CASH_TO_NONCASH_RATIO_CURR">
        <object name="Acnt_Stats_Hist"/>
        <object name="Acnt_Stats_Curr"/>
     </and>
  </condition>
');Error is
Error starting at line 1 in command:
INSERT INTO ACCOUNT_RULES (rlm$ruleid, RLM$RULEDESC, rlm$rulecond)
VALUES ('Rule1', 'DepositFollowedbyATMWithdrawalatODDTime',
'<condition>
     <and join="Acnt_Stats_Hist.AvgCash_NonCashTxnRatio * 5 &lt; Acnt_Stats_Curr.CASH_TO_NONCASH_RATIO_CURR">
        <object name="Acnt_Stats_Hist"/>
        <object name="Acnt_Stats_Curr"/>
     </and>
  </condition>
Error report:
SQL Error: ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00244: invalid use of less-than ('<') character (use &lt;)
Error at line 2
ORA-06512: at "RULES_MANAGER.RLM$VALIDATE_RULE_107363", line 92
ORA-04088: error during execution of trigger 'RULES_MANAGER.RLM$VALIDATE_RULE_107363'
31011. 00000 -  "XML parsing failed"
*Cause:    XML parser returned an error while trying to parse the document.
*Action:   Check if the document to be parsed is valid.This is the code that i am using to create the rules application:
--STEP 1
create or replace
TYPE Account_Details_Curr AS OBJECT (
ACCOUNT_ID VARCHAR2(20),
CURRENT_TRANSACTION_DATE DATE,
TransactionType_CURR VARCHAR2(10),
TRANSACTION_CHANNEL_CURR VARCHAR2(10),
TRANSACTION_MODE_CURR VARCHAR2(10),
ABNORMALITY_REASON VARCHAR2(15),
SUSPICIOUS_FUND_FLOW_SCORE FLOAT,
ACCOUNT_AGE FLOAT,
INACTIVITY_WEIGHT FLOAT,
CREDIT_AMT_BURST_SCORE FLOAT,
DEBIT_AMT_BURST_SCORE FLOAT,
TRANSACTION_AMOUNT_CURR FLOAT,
Cumm_CshAmnt_RltdAccnt_Day FLOAT,
ACCOUNT_TURNOVER FLOAT);
create or replace
TYPE Account_Stats_Curr AS OBJECT (
ACCOUNT_ID VARCHAR2(20),
CUMM_DEPOSITTXN_CNT_CURR FLOAT,
CUMM_DEPOSITTXN_AMNT_CURR FLOAT,
CUMM_WITHDRAWALTXN_CNT_CURR FLOAT,
CUMM_WITHDRAWALTXN_AMNT_CURR FLOAT,
CUMM_ATM_DEPOSITTXN_CNT_CURR FLOAT,
CUMM_ATM_DEPOSITTXN_AMNT_CURR FLOAT,
CUMM_ATM_WITH_TXN_CNT_CURR FLOAT,
CUMM_ATM_WITH_TXN_AMNT_CURR FLOAT,
CUMM_CASH_DEPOSITTXN_CNT_CURR FLOAT,
CUMM_CASH_DEPOSITTXN_AMNT_CURR FLOAT,
CUMM_CASH_WITH_TXN_CNT_CURR FLOAT,
CUMM_CASH_WITH_TXN_AMNT_CURR FLOAT,
CUMM_CLR_DEPOSITTXN_CNT_CURR FLOAT,
CUMM_CLR_DEPOSITTXN_AMNT_CURR FLOAT,
CUMM_CLR_WITH_TXN_CNT_CURR FLOAT,
CUMM_CLR_WITH_TXN_AMNT_CURR FLOAT,
CUMM_TRS_DEPOSITTXN_CNT_CURR FLOAT,
CUMM_TRS_DEPOSITTXN_AMNT_CURR FLOAT,
CUMM_TRS_WITH_TXN_CNT_CURR FLOAT,
CUMM_TRS_WITH_TXN_AMNT_CURR FLOAT,
CUMM_TXN_CNT_CURR FLOAT,
CUMM_TXN_AMNT_CURR FLOAT,
CUMM_TRANSFER_TXN_CNT_CURR FLOAT,
CUMM_TRANSFER_TXN_AMNT_CURR FLOAT,
CUMM_CLEARING_TXN_CNT_CURR FLOAT,
CUMM_CLEARING_TXN_AMNT_CURR FLOAT,
CUMM_ATM_TXN_CNT_CURR FLOAT,
CUMM_ATM_TXN_AMNT_CURR FLOAT,
CUMM_ATMCASH_DEP_TXN_CNT_CURR FLOAT,
CUMM_ATMCASH_DEP_TXN_AMNT_CURR FLOAT,
CUMM_ATMCASH_WITH_TXN_CNT_CURR FLOAT,
CUMM_ATMCSH_WITH_TXN_AMNT_CURR FLOAT,
CUMM_ATM_CSH_TOT_TXN_CNT_CURR FLOAT,
CUMM_ATM_CSH_TOT_TXN_AMNT_CURR FLOAT,
CUMM_CASH_TXN_CNT_CURR FLOAT,
CUMM_CASH_TXN_AMNT_CURR FLOAT,
CREDIT_TO_DEBIT_RATIO_CURR FLOAT,
DEBIT_TO_CREDIT_RATIO_CURR FLOAT,
CASHCR_TO_NONCASHCR_RATIO_CURR FLOAT,
CASH_TO_NONCASH_RATIO_CURR FLOAT);
create or replace
TYPE Account_Stats_Hist AS OBJECT (
ACCOUNT_ID VARCHAR2(20),
AVG_DEPOSITTXN_COUNT FLOAT,
AVG_DEPOSITTXN_AMOUNT FLOAT,
AVG_WITHDRAWALTXN_COUNT FLOAT,
AVG_WITHDRAWALTXN_AMOUNT FLOAT,
AVG_ATM_DEPOSITTXN_COUNT FLOAT,
AVG_ATM_DEPOSITTXN_AMOUNT FLOAT,
AVG_ATM_WITHDRAWALTXN_COUNT FLOAT,
AVG_ATM_WITHDRAWALTXN_AMOUNT FLOAT,
AVG_CASH_DEPOSITTXN_COUNT FLOAT,
AVG_CASH_DEPOSITTXN_AMOUNT FLOAT,
AVG_CASH_WITHDRAWALTXN_COUNT FLOAT,
AVG_CASH_WITHDRAWALTXN_AMOUNT FLOAT,
AVG_CLR_DEPOSITTXN_COUNT FLOAT,
AVG_CLR_DEPOSITTXN_AMOUNT FLOAT,
AVG_CLR_WITHDRAWALTXN_COUNT FLOAT,
AVG_CLR_WITHDRAWALTXN_AMOUNT FLOAT,
AVG_TRS_DEPOSITTXN_COUNT FLOAT,
AVG_TRS_DEPOSITTXN_AMOUNT FLOAT,
AVG_TRS_WITHDRAWALTXN_COUNT FLOAT,
AVG_TRS_WITHDRAWALTXN_AMOUNT FLOAT,
AVG_TXN_COUNT FLOAT,
AVG_TXN_AMOUNT FLOAT,
AVG_TRANSFER_TXN_COUNT FLOAT,
AVG_TRANSFER_TXN_AMOUNT FLOAT,
AVG_CLEARING_TXN_COUNT FLOAT,
AVG_CLEARING_TXN_AMOUNT FLOAT,
AVG_ATM_TXN_COUNT FLOAT,
AVG_ATM_TXN_AMOUNT FLOAT,
AVG_ATMCASH_DEP_TXN_COUNT FLOAT,
AVG_ATMCASH_DEP_TXN_AMOUNT FLOAT,
AVG_ATMCASH_WITH_TXN_COUNT FLOAT,
AVG_ATMCASH_WITH_TXN_AMOUNT FLOAT,
AVG_ATM_CSH_TOT_TXN_COUNT FLOAT,
AVG_ATM_CSH_TOT_TXN_AMOUNT FLOAT,
AVG_CASH_TXN_COUNT FLOAT,
AVG_CASH_TXN_AMOUNT FLOAT,
AVG_CREDIT_TO_DEBIT_RATIO FLOAT,
AVG_DEBIT_TO_CREDIT_RATIO FLOAT,
AVG_CASHCR_TO_NONCASHCR_RATIO FLOAT,
AVG_CASH_TO_NONCASH_RATIO FLOAT);
CREATE or REPLACE TYPE AccntsCompEvent AS OBJECT (Acnt_Details Account_Details_Curr,
                                                  Acnt_Stats_Curr Account_Stats_Curr,
                                                  Acnt_Stats_Hist Account_Stats_Hist);
BEGIN
dbms_rlmgr.create_rule_class (
rule_class => 'Account_Rules',
event_struct => 'AccntsCompEvent',
action_cbk => 'Rules_Execution',
rlcls_prop => '<composite equal="Acnt_Details.ACCOUNT_ID, Acnt_Stats_Curr.ACCOUNT_ID,Acnt_Stats_Hist.ACCOUNT_ID"/>');
END;
--STEP 3
INSERT INTO ACCOUNT_RULES (rlm$ruleid, RLM$RULEDESC, rlm$rulecond)
VALUES ('Rule1', 'DepositFollowedbyATMWithdrawalatODDTime',
'<condition>
     <and join="Acnt_Stats_Hist.AvgCash_NonCashTxnRatio * 5 &lt; Acnt_Stats_Curr.CASH_TO_NONCASH_RATIO_CURR">
        <object name="Acnt_Stats_Hist"/>
        <object name="Acnt_Stats_Curr"/>
     </and>
  </condition>
');I am getting this error and i am not able to proceed further.. Please help me...