1

ApEx PLSQL Report Regions

and

Apps that Build Themselves

Bill Holtzman and Steve Schreck

National Air Traffic Controllers Association

22

NATCA

National Air Traffic Controllers Association• Federal Aviation Administration

employees• Mountains of regulations and business

rules• 400 US facilities• 15,000 members• 1000 Reps

33

Air Traffic Control Display

44

All US Flights

55

Major Apps

Grievance Tracking: GATS– PLSQL generated SQL

report regions

Survey Tool: Survey Junkie– App creates new

pages, items, etc.

6

Participate in the Demo

http://demo.natca.net

77

Grievance Tracking

88

Manual Column Link

select '<a href="' || apex_util.prepare_URL('f?p= &APP_ID.:8:' || :APP_SESSION || ':::8: P8_DUP_GRID,P8_RET_PAGE:' || g.grid || ',32') || '">' || g.natca || '</a><br /><span style="font-size:8pt">' || g.faanum || '</span>' "NATCA/FAA" from grievance g

target URL in blue – HTML link in red

99

Manual Link with Javascript

select '<a href= "javascript:myPopUp(''' || apex_util.prepare_URL('f?p=&APP_ID.:9:' || :APP_SESSION || '::::P9_GRID:' || g.GRID) || ''')">' || g.topic || '</a>' “Grievance Regarding” from grievance g

1010

Composite Data Column

selectdecode(g.status_id, 1, decode(g.date_sub_2, null, trunc(g.u_action_2) - trunc(sysdate) || '&nbsp;' ||casewhen (g.u_action_2 - sysdate) > 7 then '<img src = "#FLOW_IMAGES#greenN.gif">'when (g.u_action_2 - sysdate) > 3 then '<img src = "#FLOW_IMAGES#yellowN.gif">'when (g.u_action_2 - sysdate) > 0 then '<img src = "#FLOW_IMAGES#redN.gif">'else '<img src="#FLOW_IMAGES#past.gif">'end,to_char(g.date_sub_2, 'MM/DD/YY')), 'Closed') "DATE_SUB"from grievance g

1111

Sorting Issue

1212

WHERE Clauseswhere g.gr_status = 2and g.status_id = p.idand ((g.faanum like '%'||:P32_FAANUM||'%' and :P32_FAANUM is not null)

or :P32_FAANUM is null)and ((:P32_FACILITY_ID != 0 and g.facility_id = :P32_FACILITY_ID) or

(:P32_FACILITY_ID = 0 and (g.facility_id in (select id from gr_facility_lookup where region_id = (select y.region_id from gr_facility_lookup y, gr_emp z where upper(z.username) = :APP_USER and z.facility_id = y.id)) or g.facility_id = 3)))

and (g.status_id = 1 or g.close_date > sysdate - :P32_DAYS)and ((g.date_sub_2 is not null and :P32_NF = 1) or (g.date_sub_2 is null

and :P32_NF = 2) or (:P32_NF = 0))and g.status_id != 2and (:P32_REP is null or lower(g.rep) like '%' || lower(:P32_REP) || '%')and (:P32_NATCA is null or upper(:P32_NATCA) = g.natca)and (:P32_GRIEVANT is null or upper(g.grievant) like '%'||

upper(:P32_GRIEVANT)||'%')and (:P32_TOPIC is null or lower(g.topic) like '%' || lower(:P32_TOPIC) ||

'%')order by g.status_id, trunc(g.reply_by_2), trunc(g.date_sub_2) nulls last,

trunc(g.u_action_2) nulls last, trunc(g.date_rec_1) nulls last, trunc(g.date_sub_1) nulls last, substr(g.natca,4,3), g.natcasub

1313

Converting to PLSQL

declarep_sql varchar2(32767);beginp_sql := q'! select * from grievance where $P7_SHOW =

1 !';return replace(p_sql, '$', ':');end;

1414

Stripping WHERE Clauses

declarep_sql varchar2(32767);beginp_sql := q'! select g.grid, !';p_sql := p_sql || q'! '<a href="javascript$myPopUp(''f?p=&APP_ID.$9$' || $APP_SESSION || '$$$$P9_GRID$' || g.grid || ''')">' || g.topic || '</a>' || gr_groupid(g.grid) "Topic“ !';p_sql := p_sql || q'! from grievance g, gr_status_lookup p, gr_bu b where g.gr_status = 3 and g.status_id = p.id and g.bu_id = b.id (+) !';if :P35_FAANUM is not null thenp_sql := p_sql || q'! and lower(g.faanum) like '%' || lower($P35_FAANUM) || '%' !';end if;return replace(p_sql,'$',':');end;

No user text = no where clause!

1515

Complex Sorting w/PLSQLdeclarep_sql varchar2(32767);beginp_sql := q'! select g.GRID, !';p_sql := p_sql || q'! '<a href="javascript$myPopUp(''f?p=&APP_ID.$9$' || $APP_SESSION || '$$$$P9_GRID$' || g.GRID || ''')" &F168_PRINT.>' || g.topic || '</a>' || gr_groupid(g.grid) "Topic" !';p_sql := p_sql || q'! from grievance g, gr_status_lookup p, gr_bu b where g.gr_status = 3 and g.status_id = p.id and g.bu_id = b.id (+) !';casewhen :P35_SORT = 1 then p_sql := p_sql || q'! order by trunc(g.reply_by_3), trunc(g.date_sub_3) nulls last !';when :P35_SORT = 2 then p_sql := p_sql || q'! order by trunc(g.date_sub_3), trunc(g.u_action_3) nulls last !';else null;end case;return replace(p_sql,'$',':');end;

1616

Result

17

Database-driven Javascript

declarep_java varchar2(4000);cursor c1 is select bu_id, bplate from gr_bu;beginp_java := 'function insertBP(p_region_id) {var p_bu_id = document.getElementById("P8_BU_ID").value;';for a1 in c1 loopp_java := p_java || chr(10) || 'if (p_bu_id == ' || a1.bu_id || ')' || chr(10) || 'document.getElementById("P8_BPLATE").value = "' || a1.bplate || '";';end loop;p_java := p_java || chr(10) || '}';:F168_BPLATE_JAVA := p_java;end;

1818

Apps that Build Themselves

1919

Subscription Tools

2020

In-house Advantages

• Direct integration with internal database

• Information stays on your server• App can be customized for future

needs• No reliance on outside support

2121

Concept Development

• Individual survey construction?• Substitute user-supplied questions

into existing item labels and user-supplied answers into Select Lists?

2222

Export File Components

wwv_flow_api.create_page_item( p_id =>7422425059996976 + wwv_flow_api.g_id_offset, p_flow_id => wwv_flow.g_flow_id, p_flow_step_id => 1, p_name =>'P1_DEMO', p_display_as => 'RADIOGROUP', p_item_sequence => 10, p_item_plug_id => 7401108705976868+wwv_flow_api.g_id_offset, p_begin_on_new_line => 'YES', p_begin_on_new_field => 'YES', p_colspan => 1, p_rowspan => 1, -- etc.) wwv_flow_id.next_val

2323

The Question

Can we use ApEx’ own export code to create ApEx objects from within an app?

2424

Concept

Demo

25

Online Demo

26

Caveats

• Use of wwv_flow_api not specifically supported by Oracle

• Do not over-write your app in PROD!

• The app cannot in some cases be imported successfully.

2727

For more information:

Bill Holtzmanbholtzman@natca.net

703-403-0139

Steve Schreckstlsjschreck@natca.net

636-399-4549

28