How to implement a search engine in java ?

Hi All,
1. Can anyone explain me with java code how to connect to a excel database residing on a
different(I know that we do it thro' dsn) machine in my network. I know that we do it with a dsn.
I created a network map but when I execute the statement
"Connection conn = (Connection)DriverManager.getConnection("jdbc:odbc:accesscarddsn");"
then I am getting the error:
SQLException:[Microsoft][ODBC Microsoft Access Driver] Too few parameters. Expected 1.
2. I am doing a website where some pages of website are jsp, servlets. I want to implement a search functionality in my site so that if the user types a keyword then I need to show him the links to the pages(whether jsp,html) which contain this keyword. How do I do that other than using property files .
Thanks & Regards,
Kumar.

With regard to your first question,you need to supply user name and passwrd in the connection statement.I guess that's problem when it saya..too few parameters. IF there is no user name and passwd, sne dnull strings.
With regard to the search functionality, there are many ways you can implement it.I am not sure about any readymade products available on the web, however you can code it yourself, it might be time consuming but I feel it is better.You can do it this way:
1. Parse all the html docs in ur website, ignore all the html tags and maintain a HASH table of all words and the locations you found the word in.You can optioanlly remove all stopwords, i.e. words that occur commonly like 'a', 'an' etc..
2. The next phase is to take a query through a cgi program and search the hash table for all keywords,make sure you seach for each keyword in the query seperately.Retreieve the docs, display the results on a html page.
Cheers!

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Hi Guru,
I crete the Search page having 5 poplists and select the values from dropdown list and click GO button it serch the records and displays that records in ResultsTable in same page.
My case, Search page is running fine if I select the values and click GO button page is refreshed without errors but I am unable to displays the records in ResultsTable.
What I am missing?
My Select Stmt:
SELECT * FROM
(select wn.nid notification_id
,ou.name company
          ,I.PAY_GROUP_LOOKUP_CODE paygroup
          ,'AP' source
          ,pf.full_name initiator
          ,pv.vendor_name supplier_name
          ,I.GL_DATE FROM_TO_DATE
from ap_invoices_all i
, po_vendors pv
     , hr_operating_units ou
     , per_all_people_f pf
     , FND_USER FU
, (SELECT trim(substr(substr(substr(WN.subject,(instr(WN.subject,'Invoice ') + 8),100),1,100),
1,instr(substr(substr(WN.subject,(instr(WN.subject,'Invoice ') + 8),100),1,100),' for'))) inv_no
,notification_id nid
FROM WF_NOTIFICATIONS WN
WHERE WN.MESSAGE_TYPE = 'APINV'
AND WN.STATUS NOT IN ('CANCELED','CLOSED')) wn
where i.vendor_id = pv.vendor_id
and i.invoice_num = wn.inv_no
and i.WFAPPROVAL_STATUS = 'REQUIRED'
and pv.vendor_name = nvl(:vendor_name,pv.vendor_name)
and i.org_id = OU.organization_id
AND OU.name like nvl(:company_name,name)
and i.pay_group_lookup_code = nvl(:pay_group,i.pay_group_lookup_code)
and exists (select ad.invoice_id
from ap_invoice_distributions_all ad
where ad.invoice_id = i.invoice_id
and ad.accounting_date between nvl(:from_date,ad.accounting_date)
                                   and nvl(:to_date,ad.accounting_date))
and 'AP' = nvl(:source,'AP')
     and i.created_by = fu.user_id
     AND fu.EMPLOYEE_ID = pf.person_id
     AND pf.full_name like nvl(:initiator, pf.full_name)
UNION ALL
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          ,ou.name company
          ,ps.PAY_GROUP_LOOKUP_CODE paygroup
          ,'PO' source
          ,pf.full_name initiator
          ,pv.vendor_name supplier_name
          ,P.CREATION_DATE FROM_TO_DATE
     from po_headers_all p
     ,po_vendors pv
          ,po_vendor_sites_all ps
          ,hr_operating_units ou
          ,per_all_people_f pf
     ,(select trim(substr(wn.subject,24,instr(wn.subject,' for')-24)) po_no, notification_id nid
          FROM WF_NOTIFICATIONS WN
     WHERE WN.MESSAGE_TYPE = 'POAPPRV'
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     where p.SEGMENT1 = po_num.po_no
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     where name like nvl(:company_name,name))
     and pv.vendor_name = nvl(:vendor_name,pv.vendor_name)
     and p.AUTHORIZATION_STATUS = 'IN PROCESS'
     and p.CANCEL_FLAG = 'N'
     and 'PO' = nvl(:source,'PO')
     and p.agent_id = pf.person_id
     and pf.full_name like nvl(:initiator, pf.full_name)
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     and ou.name like nvl(:company_name,name)
and ps.PAY_GROUP_LOOKUP_CODE = nvl(:pay_group,ps.PAY_GROUP_LOOKUP_CODE)
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In CO PFR Code:
if (pageContext.getParameter("Go") != null)
OAQueryUtils.checkSelectiveSearchCriteria(pageContext, webBean);
     String COMPANY = pageContext.getParameter("COMPANY");
String PAYGROUP = pageContext.getParameter("PAYGROUP");
String SOURCE = pageContext.getParameter("SOURCE");
String INITIATOR = pageContext.getParameter("INITIATOR");
String SUPPLIER_NAME = pageContext.getParameter("SUPPLIER_NAME");
Boolean executeQuery = BooleanUtils.getBoolean(false);
Serializable[] parameters = { COMPANY, PAYGROUP, SOURCE, INITIATOR, SUPPLIER_NAME, executeQuery};
Class[] paramTypes = { String.class, String.class, String.class, String.class, String.class, Boolean.class };
am.invokeMethod("initSearch", parameters, paramTypes);
OAAdvancedTableBean table = (OAAdvancedTableBean)webBean.findChildRecursive("ResultsTable");
table.queryData(pageContext, false);
AM invoke Method():
public void initSearch(String company,
String paygroup,
String source,
String initiator,
String supplier_name,
Boolean executeQuery)
WorklistFindVOImpl vo = getWorklistFindVO1();
if (vo == null)
MessageToken[] tokens = { new MessageToken("OBJECT_NAME", "WorklistFindVO1") };
throw new OAException("AK", "FWK_TBX_OBJECT_NOT_FOUND", tokens);
vo.initQuery(company, paygroup, source, initiator, supplier_name, executeQuery);
VO Code:
public void initQuery(String company,
String paygroup,
String source,
String initiator,
String supplier_name,
Boolean executeQuery)
StringBuffer whereClause = new StringBuffer(500);
Vector parameters = new Vector(5);
int clauseCount = 0;
int bindCount = 0;
setWhereClauseParams(null); // Always reset
if ((company != null))
String companyname = null;
try
companyname = new String(company);
catch(Exception e) {}
whereClause.append("COMPANY= :COMPANY");
whereClause.append(++bindCount);
parameters.addElement(company);
clauseCount++;
if ((paygroup != null) && (!("".equals(paygroup))))
if (clauseCount > 0)
whereClause.append(" AND ");
whereClause.append("PAYGROUP = :PAYGROUP");
whereClause.append(++bindCount);
parameters.addElement(paygroup);
clauseCount++;
if ((source != null) && (!("".equals(source))))
if (clauseCount > 0)
whereClause.append(" AND ");
whereClause.append("SOURCE = :SOURCE");
whereClause.append(++bindCount);
parameters.addElement(source);
clauseCount++;
if ((initiator != null) && (!("".equals(initiator))))
if (clauseCount > 0)
whereClause.append(" AND ");
whereClause.append("INITIATOR = :INITIATOR");
whereClause.append(++bindCount);
parameters.addElement(initiator);
clauseCount++;
if ((supplier_name != null) && (!("".equals(supplier_name))))
if (clauseCount > 0)
whereClause.append(" AND ");
whereClause.append("SUPPLIER_NAME = :SUPPLIER_NAME");
whereClause.append(++bindCount);
parameters.addElement(supplier_name);
clauseCount++;
setWhereClause(whereClause.toString());
if (bindCount > 0)
Object[] params = new Object[bindCount];
parameters.copyInto(params);
setWhereClauseParams(params);
if ((executeQuery != null) && (executeQuery.booleanValue()))
executeQuery();
} // end initQuery()
Please let me know what I did mistake in my code?
I am unable to find it what I missing and there is no errors but no records displayed in Results Table.
Please it's urgent.
Thanks
Nag.
Edited by: user635152 on Nov 19, 2008 4:43 PM

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