Can i use an array as a methods parameter?

If you can how would I call the method?
public void method(int[] p){
method({1, 1, 1 , 1});that gives me errors :D
Edited by: tom14201 on Dec 16, 2007 5:19 AM

sorry I meant in the last replyint arr[] = new int [4];
for(int i= 0; i< 4; i++)
arr[i] = 1;
method(arr);Edited by: javadare on Dec 16, 2007 5:28 AM
Edited by: javadare on Dec 16, 2007 5:30 AM

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How can I use my array in another method.... Or better yet, what's wrong?

I guess I'll show you what I am trying to do rather and then explain it
public class arraycalc
int[] dog;
public void arraycalc()
dog = new int[2];
public void setSize(int size)
dog[1] = size;
public int getSize()
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This gives me a null pointer exception...
How can I use my array from other methods?

You have to make the array static. :)
Although I must admit, this is rather bad usage. What you want to do is use an object constructor to make this class an object type, and then create the array in your main class using this type, and then call the methods from this class to modify your array. Creating the array inside the other method leads to a whole bunch of other stuff that's ... well, bad. :)
Another thing: Because you're creating your array inside this class and you want to call your array from another class, you need to make the array static; to make it static, you must make your methods static. And according to my most ingenious computer science teacher, STATIC METHODS SUCK. :D
So, if you want to stick with your layout, it would look like:
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You should definitely read up on OOP, as this problem would be better solved by creating a new object type.

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Can I use Bulk Collect results as input parameter for another cursor

MUSIC            ==> remote MUSIC_DB database, MUSIC table has 60 million rows
PRICE_DATA ==> remote PRICING_DB database, PRICE_DATE table has 1 billion rows
These two table once existed in same database, but size of database exceeded available hardware size and hardware budget, so the PRICE_DATA table was moved to another Oracle database. I need to create a single report that combines data from both of these tables, and a distributed join with DRIVING_SITE hint will not work because the size of both table is too large to push to one DRIVING_SITE location, so I wrote this PLSQL block to process in small blocks.
QUESTION: how can use bulk collect from one cursor and pass that bulk collected information as input to second cursor without specifically listing each cell of the PLSQL bulk collection? See sample pseudo-code below, I am trying to determine more efficient way to code than hard-coding 100 parameter names into 2nd cursor.
NOTE: below is truly pseudo-code, I had to change the names of everything to adhere to NDA, but below works and is fast enough for my purposes, but if I want to change from 100 input parameters to 200, I have to add more hard-coded values. There has got to be a better way.
DECLARE
     -- define cursor that retrieves distinct SONG_IDs from MUSIC table in remote music database
     CURSOR C_CURRENT_MUSIC
     IS
    select distinct SONG_ID
    from MUSIC@MUSIC_DB
    where PRODUCTION_RELEASE=1
     /* define a parameterized cursor that accepts 100 SONG_IDs and retrieves
          required pricing information
     CURSOR C_get_music_price_data
               P_SONG_ID_001 NUMBER, P_SONG_ID_002 NUMBER, P_SONG_ID_003 NUMBER, P_SONG_ID_004 NUMBER, P_SONG_ID_005 NUMBER, P_SONG_ID_006 NUMBER, P_SONG_ID_007 NUMBER, P_SONG_ID_008 NUMBER, P_SONG_ID_009 NUMBER, P_SONG_ID_010 NUMBER,
               P_SONG_ID_011 NUMBER, P_SONG_ID_012 NUMBER, P_SONG_ID_013 NUMBER, P_SONG_ID_014 NUMBER, P_SONG_ID_015 NUMBER, P_SONG_ID_016 NUMBER, P_SONG_ID_017 NUMBER, P_SONG_ID_018 NUMBER, P_SONG_ID_019 NUMBER, P_SONG_ID_020 NUMBER,
               P_SONG_ID_021 NUMBER, P_SONG_ID_022 NUMBER, P_SONG_ID_023 NUMBER, P_SONG_ID_024 NUMBER, P_SONG_ID_025 NUMBER, P_SONG_ID_026 NUMBER, P_SONG_ID_027 NUMBER, P_SONG_ID_028 NUMBER, P_SONG_ID_029 NUMBER, P_SONG_ID_030 NUMBER,
               P_SONG_ID_031 NUMBER, P_SONG_ID_032 NUMBER, P_SONG_ID_033 NUMBER, P_SONG_ID_034 NUMBER, P_SONG_ID_035 NUMBER, P_SONG_ID_036 NUMBER, P_SONG_ID_037 NUMBER, P_SONG_ID_038 NUMBER, P_SONG_ID_039 NUMBER, P_SONG_ID_040 NUMBER,
               P_SONG_ID_041 NUMBER, P_SONG_ID_042 NUMBER, P_SONG_ID_043 NUMBER, P_SONG_ID_044 NUMBER, P_SONG_ID_045 NUMBER, P_SONG_ID_046 NUMBER, P_SONG_ID_047 NUMBER, P_SONG_ID_048 NUMBER, P_SONG_ID_049 NUMBER, P_SONG_ID_050 NUMBER,
               P_SONG_ID_051 NUMBER, P_SONG_ID_052 NUMBER, P_SONG_ID_053 NUMBER, P_SONG_ID_054 NUMBER, P_SONG_ID_055 NUMBER, P_SONG_ID_056 NUMBER, P_SONG_ID_057 NUMBER, P_SONG_ID_058 NUMBER, P_SONG_ID_059 NUMBER, P_SONG_ID_060 NUMBER,
               P_SONG_ID_061 NUMBER, P_SONG_ID_062 NUMBER, P_SONG_ID_063 NUMBER, P_SONG_ID_064 NUMBER, P_SONG_ID_065 NUMBER, P_SONG_ID_066 NUMBER, P_SONG_ID_067 NUMBER, P_SONG_ID_068 NUMBER, P_SONG_ID_069 NUMBER, P_SONG_ID_070 NUMBER,
               P_SONG_ID_071 NUMBER, P_SONG_ID_072 NUMBER, P_SONG_ID_073 NUMBER, P_SONG_ID_074 NUMBER, P_SONG_ID_075 NUMBER, P_SONG_ID_076 NUMBER, P_SONG_ID_077 NUMBER, P_SONG_ID_078 NUMBER, P_SONG_ID_079 NUMBER, P_SONG_ID_080 NUMBER,
               P_SONG_ID_081 NUMBER, P_SONG_ID_082 NUMBER, P_SONG_ID_083 NUMBER, P_SONG_ID_084 NUMBER, P_SONG_ID_085 NUMBER, P_SONG_ID_086 NUMBER, P_SONG_ID_087 NUMBER, P_SONG_ID_088 NUMBER, P_SONG_ID_089 NUMBER, P_SONG_ID_090 NUMBER,
               P_SONG_ID_091 NUMBER, P_SONG_ID_092 NUMBER, P_SONG_ID_093 NUMBER, P_SONG_ID_094 NUMBER, P_SONG_ID_095 NUMBER, P_SONG_ID_096 NUMBER, P_SONG_ID_097 NUMBER, P_SONG_ID_098 NUMBER, P_SONG_ID_099 NUMBER, P_SONG_ID_100 NUMBER
     IS
     select
     from PRICE_DATA@PRICING_DB
     where COUNTRY = 'USA'
     and START_DATE <= sysdate
     and END_DATE > sysdate
     and vpc.SONG_ID IN
               P_SONG_ID_001 ,P_SONG_ID_002 ,P_SONG_ID_003 ,P_SONG_ID_004 ,P_SONG_ID_005 ,P_SONG_ID_006 ,P_SONG_ID_007 ,P_SONG_ID_008 ,P_SONG_ID_009 ,P_SONG_ID_010,
               P_SONG_ID_011 ,P_SONG_ID_012 ,P_SONG_ID_013 ,P_SONG_ID_014 ,P_SONG_ID_015 ,P_SONG_ID_016 ,P_SONG_ID_017 ,P_SONG_ID_018 ,P_SONG_ID_019 ,P_SONG_ID_020,
               P_SONG_ID_021 ,P_SONG_ID_022 ,P_SONG_ID_023 ,P_SONG_ID_024 ,P_SONG_ID_025 ,P_SONG_ID_026 ,P_SONG_ID_027 ,P_SONG_ID_028 ,P_SONG_ID_029 ,P_SONG_ID_030,
               P_SONG_ID_031 ,P_SONG_ID_032 ,P_SONG_ID_033 ,P_SONG_ID_034 ,P_SONG_ID_035 ,P_SONG_ID_036 ,P_SONG_ID_037 ,P_SONG_ID_038 ,P_SONG_ID_039 ,P_SONG_ID_040,
               P_SONG_ID_041 ,P_SONG_ID_042 ,P_SONG_ID_043 ,P_SONG_ID_044 ,P_SONG_ID_045 ,P_SONG_ID_046 ,P_SONG_ID_047 ,P_SONG_ID_048 ,P_SONG_ID_049 ,P_SONG_ID_050,
               P_SONG_ID_051 ,P_SONG_ID_052 ,P_SONG_ID_053 ,P_SONG_ID_054 ,P_SONG_ID_055 ,P_SONG_ID_056 ,P_SONG_ID_057 ,P_SONG_ID_058 ,P_SONG_ID_059 ,P_SONG_ID_060,
               P_SONG_ID_061 ,P_SONG_ID_062 ,P_SONG_ID_063 ,P_SONG_ID_064 ,P_SONG_ID_065 ,P_SONG_ID_066 ,P_SONG_ID_067 ,P_SONG_ID_068 ,P_SONG_ID_069 ,P_SONG_ID_070,
               P_SONG_ID_071 ,P_SONG_ID_072 ,P_SONG_ID_073 ,P_SONG_ID_074 ,P_SONG_ID_075 ,P_SONG_ID_076 ,P_SONG_ID_077 ,P_SONG_ID_078 ,P_SONG_ID_079 ,P_SONG_ID_080,
               P_SONG_ID_081 ,P_SONG_ID_082 ,P_SONG_ID_083 ,P_SONG_ID_084 ,P_SONG_ID_085 ,P_SONG_ID_086 ,P_SONG_ID_087 ,P_SONG_ID_088 ,P_SONG_ID_089 ,P_SONG_ID_090,
               P_SONG_ID_091 ,P_SONG_ID_092 ,P_SONG_ID_093 ,P_SONG_ID_094 ,P_SONG_ID_095 ,P_SONG_ID_096 ,P_SONG_ID_097 ,P_SONG_ID_098 ,P_SONG_ID_099 ,P_SONG_ID_100
     group by
           vpc.SONG_ID
          ,vpc.STOREFRONT_ID
     TYPE SONG_ID_TYPE IS TABLE OF MUSIC@MUSIC_DB%TYPE INDEX BY BINARY_INTEGER;
     V_SONG_ID_ARRAY                         SONG_ID_TYPE                     ;
     v_commit_counter           NUMBER := 0;
BEGIN
     /* open cursor you intent to bulk collect from */
     OPEN C_CURRENT_MUSIC;
     LOOP
          /* in batches of 100, bulk collect ADAM_ID mapped TMS_IDENTIFIER into PLSQL table or records */
          FETCH C_CURRENT_MUSIC BULK COLLECT INTO V_SONG_ID_ARRAY LIMIT 100;
               EXIT WHEN V_SONG_ID_ARRAY.COUNT = 0;
               /* to avoid NO DATA FOUND error when pass 100 parameters to OPEN cursor, if the arrary
                  is not fully populated to 100, pad the array with nulls to fill up to 100 cells. */
               IF (V_SONG_ID_ARRAY.COUNT >=1 and V_SONG_ID_ARRAY.COUNT <> 100) THEN
                    FOR j IN V_SONG_ID_ARRAY.COUNT+1..100 LOOP
                         V_SONG_ID_ARRAY(j) := null;
                    END LOOP;
               END IF;
          /* pass a batch of 100 to cursor that get price information per SONG_ID and STOREFRONT_ID */
          FOR j IN C_get_music_price_data
                    V_SONG_ID_ARRAY(1) ,V_SONG_ID_ARRAY(2) ,V_SONG_ID_ARRAY(3) ,V_SONG_ID_ARRAY(4) ,V_SONG_ID_ARRAY(5) ,V_SONG_ID_ARRAY(6) ,V_SONG_ID_ARRAY(7) ,V_SONG_ID_ARRAY(8) ,V_SONG_ID_ARRAY(9) ,V_SONG_ID_ARRAY(10) ,
                    V_SONG_ID_ARRAY(11) ,V_SONG_ID_ARRAY(12) ,V_SONG_ID_ARRAY(13) ,V_SONG_ID_ARRAY(14) ,V_SONG_ID_ARRAY(15) ,V_SONG_ID_ARRAY(16) ,V_SONG_ID_ARRAY(17) ,V_SONG_ID_ARRAY(18) ,V_SONG_ID_ARRAY(19) ,V_SONG_ID_ARRAY(20) ,
                    V_SONG_ID_ARRAY(21) ,V_SONG_ID_ARRAY(22) ,V_SONG_ID_ARRAY(23) ,V_SONG_ID_ARRAY(24) ,V_SONG_ID_ARRAY(25) ,V_SONG_ID_ARRAY(26) ,V_SONG_ID_ARRAY(27) ,V_SONG_ID_ARRAY(28) ,V_SONG_ID_ARRAY(29) ,V_SONG_ID_ARRAY(30) ,
                    V_SONG_ID_ARRAY(31) ,V_SONG_ID_ARRAY(32) ,V_SONG_ID_ARRAY(33) ,V_SONG_ID_ARRAY(34) ,V_SONG_ID_ARRAY(35) ,V_SONG_ID_ARRAY(36) ,V_SONG_ID_ARRAY(37) ,V_SONG_ID_ARRAY(38) ,V_SONG_ID_ARRAY(39) ,V_SONG_ID_ARRAY(40) ,
                    V_SONG_ID_ARRAY(41) ,V_SONG_ID_ARRAY(42) ,V_SONG_ID_ARRAY(43) ,V_SONG_ID_ARRAY(44) ,V_SONG_ID_ARRAY(45) ,V_SONG_ID_ARRAY(46) ,V_SONG_ID_ARRAY(47) ,V_SONG_ID_ARRAY(48) ,V_SONG_ID_ARRAY(49) ,V_SONG_ID_ARRAY(50) ,
                    V_SONG_ID_ARRAY(51) ,V_SONG_ID_ARRAY(52) ,V_SONG_ID_ARRAY(53) ,V_SONG_ID_ARRAY(54) ,V_SONG_ID_ARRAY(55) ,V_SONG_ID_ARRAY(56) ,V_SONG_ID_ARRAY(57) ,V_SONG_ID_ARRAY(58) ,V_SONG_ID_ARRAY(59) ,V_SONG_ID_ARRAY(60) ,
                    V_SONG_ID_ARRAY(61) ,V_SONG_ID_ARRAY(62) ,V_SONG_ID_ARRAY(63) ,V_SONG_ID_ARRAY(64) ,V_SONG_ID_ARRAY(65) ,V_SONG_ID_ARRAY(66) ,V_SONG_ID_ARRAY(67) ,V_SONG_ID_ARRAY(68) ,V_SONG_ID_ARRAY(69) ,V_SONG_ID_ARRAY(70) ,
                    V_SONG_ID_ARRAY(71) ,V_SONG_ID_ARRAY(72) ,V_SONG_ID_ARRAY(73) ,V_SONG_ID_ARRAY(74) ,V_SONG_ID_ARRAY(75) ,V_SONG_ID_ARRAY(76) ,V_SONG_ID_ARRAY(77) ,V_SONG_ID_ARRAY(78) ,V_SONG_ID_ARRAY(79) ,V_SONG_ID_ARRAY(80) ,
                    V_SONG_ID_ARRAY(81) ,V_SONG_ID_ARRAY(82) ,V_SONG_ID_ARRAY(83) ,V_SONG_ID_ARRAY(84) ,V_SONG_ID_ARRAY(85) ,V_SONG_ID_ARRAY(86) ,V_SONG_ID_ARRAY(87) ,V_SONG_ID_ARRAY(88) ,V_SONG_ID_ARRAY(89) ,V_SONG_ID_ARRAY(90) ,
                    V_SONG_ID_ARRAY(91) ,V_SONG_ID_ARRAY(92) ,V_SONG_ID_ARRAY(93) ,V_SONG_ID_ARRAY(94) ,V_SONG_ID_ARRAY(95) ,V_SONG_ID_ARRAY(96) ,V_SONG_ID_ARRAY(97) ,V_SONG_ID_ARRAY(98) ,V_SONG_ID_ARRAY(99) ,V_SONG_ID_ARRAY(100)
          LOOP
               /* do stuff with data from Song and Pricing Database coming from the two
                    separate cursors, then continue processing more rows...
          END LOOP;
          /* commit after each batch of 100 SONG_IDs is processed */
          COMMIT;
          EXIT WHEN C_CURRENT_MUSIC%NOTFOUND; -- exit when there are no more rows to fetch from cursor
     END LOOP; -- bulk fetching loop
     CLOSE C_CURRENT_MUSIC; -- close cursor that was used in bulk collection
     /* commit rows */
     COMMIT; -- commit any remaining uncommitted data.
END;

I've got a problem when using passing VARRAY of numbers as parameter to remote cursor: it takes a super long time to run, sometimes doesn't finish even after an hour as passed.
Continuing with my example in original entry, I replaced the bulk collect into PLSQL table collection with a VARRAY and i bulk collect into the VARRAY, this is fast and I know it works because I can DBMS_OUTPUT.PUT_LINE cells of VARRAY so I know it is getting populated correctly. However, when I pass the VARRAY containing 100 cells populated with SONG_IDs as parameter to cursor, execution time is over an hour and when I am expecting a few seconds.
Below code example strips the problem down to it's raw details, I skip the bulk collect and just manually populate a VARRAY with 100 SONG_ID values, then try to pass to as parameter to a cursor, but the execution time of cursor is unexpectedly long, over 30 minutes, sometime longer, when I am expecting seconds.
IMPORTANT: If I take the same 100 SONG_IDs and place them directly in the cursor query's where IN clause, the SQL runs in under 5 seconds and returns result. Also, if I pass the 100 SONG_IDs as individual cells of a PLSQL table collection, then it also runs fast.
I thought that since the VARRAY is used via select subquery that is it queried locally, but the cursor is remote, and that I had a distribute problem on my hands, so I put in the DRIVING_SITE hint to attempt to force the result of query against VARRAY to go to remote server and rest of query will run there before returning result, but that didn't work either, still got slow response.
Is something wrong with my code, or I am running into a Oracle problem that may require support to resolve?
DECLARE
     /* define a parameterized cursor that accepts XXX number of in SONG_IDs and
      retrieves required pricing information
     CURSOR C_get_music_price_data
p_array_song_ids SYS.ODCInumberList
     IS
     select /*+DRIVING_SITE(pd) */
count(distinct s.EVE_ID)
     from PRICE_DATA@PRICING_DB pd
     where pd.COUNTRY = 'USA'
     and pd.START_DATE <= sysdate
     and pd.END_DATE > sysdate
     and pd.SONG_ID IN
          select column_value from table(p_array_song_ids)
     group by
           pd.SONG_ID
          ,pd.STOREFRONT_ID
V_ARRAY_SONG_IDS SYS.ODCInumberList := SYS.ODCInumberList();
BEGIN
V_ARRAY_SONG_IDS.EXTEND(100);
V_ARRAY_SONG_IDS( 1 ) := 31135 ;
V_ARRAY_SONG_IDS( 2 ) := 31140   ;
V_ARRAY_SONG_IDS( 3 ) := 31142   ;
V_ARRAY_SONG_IDS( 4 ) := 31144   ;
V_ARRAY_SONG_IDS( 5 ) := 31146   ;
V_ARRAY_SONG_IDS( 6 ) := 31148   ;
V_ARRAY_SONG_IDS( 7 ) := 31150   ;
V_ARRAY_SONG_IDS( 8 ) := 31152   ;
V_ARRAY_SONG_IDS( 9 ) := 31154   ;
V_ARRAY_SONG_IDS( 10 ) := 31156   ;
V_ARRAY_SONG_IDS( 11 ) := 31158   ;
V_ARRAY_SONG_IDS( 12 ) := 31160   ;
V_ARRAY_SONG_IDS( 13 ) := 33598   ;
V_ARRAY_SONG_IDS( 14 ) := 33603   ;
V_ARRAY_SONG_IDS( 15 ) := 33605   ;
V_ARRAY_SONG_IDS( 16 ) := 33607   ;
V_ARRAY_SONG_IDS( 17 ) := 33609   ;
V_ARRAY_SONG_IDS( 18 ) := 33611   ;
V_ARRAY_SONG_IDS( 19 ) := 33613   ;
V_ARRAY_SONG_IDS( 20 ) := 33615   ;
V_ARRAY_SONG_IDS( 21 ) := 33617   ;
V_ARRAY_SONG_IDS( 22 ) := 33630   ;
V_ARRAY_SONG_IDS( 23 ) := 33632   ;
V_ARRAY_SONG_IDS( 24 ) := 33636   ;
V_ARRAY_SONG_IDS( 25 ) := 33638   ;
V_ARRAY_SONG_IDS( 26 ) := 33640   ;
V_ARRAY_SONG_IDS( 27 ) := 33642   ;
V_ARRAY_SONG_IDS( 28 ) := 33644   ;
V_ARRAY_SONG_IDS( 29 ) := 33646   ;
V_ARRAY_SONG_IDS( 30 ) := 33648   ;
V_ARRAY_SONG_IDS( 31 ) := 33662   ;
V_ARRAY_SONG_IDS( 32 ) := 33667   ;
V_ARRAY_SONG_IDS( 33 ) := 33669   ;
V_ARRAY_SONG_IDS( 34 ) := 33671   ;
V_ARRAY_SONG_IDS( 35 ) := 33673   ;
V_ARRAY_SONG_IDS( 36 ) := 33675   ;
V_ARRAY_SONG_IDS( 37 ) := 33677   ;
V_ARRAY_SONG_IDS( 38 ) := 33679   ;
V_ARRAY_SONG_IDS( 39 ) := 33681   ;
V_ARRAY_SONG_IDS( 40 ) := 33683   ;
V_ARRAY_SONG_IDS( 41 ) := 33685   ;
V_ARRAY_SONG_IDS( 42 ) := 33700   ;
V_ARRAY_SONG_IDS( 43 ) := 33702   ;
V_ARRAY_SONG_IDS( 44 ) := 33704   ;
V_ARRAY_SONG_IDS( 45 ) := 33706   ;
V_ARRAY_SONG_IDS( 46 ) := 33708   ;
V_ARRAY_SONG_IDS( 47 ) := 33710   ;
V_ARRAY_SONG_IDS( 48 ) := 33712   ;
V_ARRAY_SONG_IDS( 49 ) := 33723   ;
V_ARRAY_SONG_IDS( 50 ) := 33725   ;
V_ARRAY_SONG_IDS( 51 ) := 33727   ;
V_ARRAY_SONG_IDS( 52 ) := 33729   ;
V_ARRAY_SONG_IDS( 53 ) := 33731   ;
V_ARRAY_SONG_IDS( 54 ) := 33733   ;
V_ARRAY_SONG_IDS( 55 ) := 33735   ;
V_ARRAY_SONG_IDS( 56 ) := 33737   ;
V_ARRAY_SONG_IDS( 57 ) := 33749   ;
V_ARRAY_SONG_IDS( 58 ) := 33751   ;
V_ARRAY_SONG_IDS( 59 ) := 33753   ;
V_ARRAY_SONG_IDS( 60 ) := 33755   ;
V_ARRAY_SONG_IDS( 61 ) := 33757   ;
V_ARRAY_SONG_IDS( 62 ) := 33759   ;
V_ARRAY_SONG_IDS( 63 ) := 33761   ;
V_ARRAY_SONG_IDS( 64 ) := 33763   ;
V_ARRAY_SONG_IDS( 65 ) := 33775   ;
V_ARRAY_SONG_IDS( 66 ) := 33777   ;
V_ARRAY_SONG_IDS( 67 ) := 33779   ;
V_ARRAY_SONG_IDS( 68 ) := 33781   ;
V_ARRAY_SONG_IDS( 69 ) := 33783   ;
V_ARRAY_SONG_IDS( 70 ) := 33785   ;
V_ARRAY_SONG_IDS( 71 ) := 33787   ;
V_ARRAY_SONG_IDS( 72 ) := 33789   ;
V_ARRAY_SONG_IDS( 73 ) := 33791   ;
V_ARRAY_SONG_IDS( 74 ) := 33793   ;
V_ARRAY_SONG_IDS( 75 ) := 33807   ;
V_ARRAY_SONG_IDS( 76 ) := 33809   ;
V_ARRAY_SONG_IDS( 77 ) := 33811   ;
V_ARRAY_SONG_IDS( 78 ) := 33813   ;
V_ARRAY_SONG_IDS( 79 ) := 33815   ;
V_ARRAY_SONG_IDS( 80 ) := 33817   ;
V_ARRAY_SONG_IDS( 81 ) := 33819   ;
V_ARRAY_SONG_IDS( 82 ) := 33821   ;
V_ARRAY_SONG_IDS( 83 ) := 33823   ;
V_ARRAY_SONG_IDS( 84 ) := 33825   ;
V_ARRAY_SONG_IDS( 85 ) := 33839   ;
V_ARRAY_SONG_IDS( 86 ) := 33844   ;
V_ARRAY_SONG_IDS( 87 ) := 33846   ;
V_ARRAY_SONG_IDS( 88 ) := 33848   ;
V_ARRAY_SONG_IDS( 89 ) := 33850   ;
V_ARRAY_SONG_IDS( 90 ) := 33852   ;
V_ARRAY_SONG_IDS( 91 ) := 33854   ;
V_ARRAY_SONG_IDS( 92 ) := 33856   ;
V_ARRAY_SONG_IDS( 93 ) := 33858   ;
V_ARRAY_SONG_IDS( 94 ) := 33860   ;
V_ARRAY_SONG_IDS( 95 ) := 33874   ;
V_ARRAY_SONG_IDS( 96 ) := 33879   ;
V_ARRAY_SONG_IDS( 97 ) := 33881   ;
V_ARRAY_SONG_IDS( 98 ) := 33883   ;
V_ARRAY_SONG_IDS( 99 ) := 33885   ;
V_ARRAY_SONG_IDS(100 ) := 33889 ;
    /* do stuff with data from Song and Pricing Database coming from the two
separate cursors, then continue processing more rows...
FOR i IN C_get_music_price_data( v_array_song_ids ) LOOP
. (this is the loop where I pass in v_array_song_ids
. populated with only 100 cells and it runs forever)
END LOOP;
END;

Can we use a view_name inside a hint parameter ?

Hi all,
With the hint INDEX_JOIN(table_name index_name) , can we use a view_name in place of the table_name parameter ?
And what gives better performance : hash join hint or standard join ?
Thank you very much indeed

And what gives better performance : hash join hint or standard join ?It depends.
You should first try to know why you need a HINT. Then, if no other way, try to find which way your query have to take to be improved.
Then, and not lastly, you can try HINT. But you may want to avoid it, since your query will not use CBO anymore.
Nicolas.

How can I use the commandLink's setAction method?

I have some jsf code like this:
<af:commandLink text="#{row.name}" action="detail">
and I want to change the commandLink's action dynamic,so I write such code:
CoreCommandLink ccl=new CoreCommandLink();
but I can't write
ccl.setAction("detail");
directly
this method is like this
public final void setAction(MethodBinding action)
Can you give me some example how to use this method?
Thank you very much!

User,
If you want the action to be dynamic, create a method in your backing bean that returns the proper navigation case string and bind the action to that. For example, if you have a backing bean called "myBean," write a method in the backing bean like this:
public String myAction()
if (something) return "action1";
if (somethingelse) return "action2";
// etc
}and your commandLink looks like:
<af:commandLink text="#{row.name}" action="#{myBean.myAction}"/>This is a much better way to do what you are trying. The error you are getting, by the way, is you are passing a string paramter to setAction, which expects a MethodBinding as a parameter; however, just use the way described above - much easier.
John

Can i use getValue() instead of getText() method while retrieving data

can anybody help me by clearly explaining what is the difference between them.
Thank you in advance.

value is property defined by the UIOutput class defined in the ValueHolder interface.. . I suppose both of them (getValue/getText) return a java.lang.Object.
So,. you should be able to use getValue in your bean without any problems.
Even though when specifying attrbutes in the jsp page you can only specify it as a text attribute.

How can i use return statement in a method no flaming pls

public class example2
public int add(int i,int j)
int k = i + j;
return k; <<<< -HERE->
public static void main(String[] args)
example2 obj=new example2();
obj.add(2,3);
System.out.println("k"+k);
Iam really really new to java programming so dont flame me
In the above program i was hoping by putting return k it would return vlaue of k to the calling object but it didnt work i had to place sys.out.println in the method and take out the return from the method for it to work
So why dosent it work and where is it returned to the k value.

BlueRibbon wrote:
In the above program i was hoping by putting return k it would return vlaue of k to the calling objectThat's what happens, yes. The VALUE of k is returned, not the NAME k, so you cannot refer to the value by just k. To the caller, the value is obtained by evaluating the expression that calls the function. So you could do
public class example2
     public int add(int i, int j)
          return i + j;
     public static void main(String[] args)
          example2 obj = new example2();
          System.out.println(obj.add(2, 3));
}

Can we use JSP in a JavaScript method

Hi,
I have a following code. and I want to do a validation that whether a file exists or not before previewing it on my screen.
The code does not seem to work.
Is it the correct approach.
Please help.
<HTML>
<HEAD>
<TITLE> This is frame1 </TITLE>
<!%
private static boolean exists (String filename) {
return exists (filename, new File ("c:/image/"));
private static boolean exists (String filename, File dir) {
     boolean exists = false;
     filename=filename+".jpg";
    if (new File (dir, filename).exists ()) {
          exists = true;
        } else {
            File[] subdirs = dir.listFiles ();
            int i = 0;
            int n = (subdirs == null) ? 0 : subdirs.length;
            while ((i < n) && ! exists) {
                File subdir = subdirs;
if (subdir.isDirectory ()) {
exists = exists (filename, subdir);
i ++;
return exists;
     %>
<script type="text/javascript">
<!-- Begin
// width to resize large images to
var maxWidth=150;
// height to resize large images to
var maxHeight=150;
// the id of the preview image tag
var outImage="previewField";
function preview(what){
var test;
var path = "C:/image/";
var source=what.value;
var finalpath = path+source+".jpg";
test= <%=exists((String)(request.getParameter("user")))%>
alert(test);
if(test = 'false')
     alert("file does not exist");
     //alert(finalpath);
// var ext=source.substring(source.lastIndexOf(".")+1,source.length).toLowerCase();
//for (var i=0; i<fileTypes.length; i++) if (fileTypes[i]==ext) break;
globalPic=new Image();
var i = 0;
//alert(what.value);
globalPic.src=finalpath;
//alert(globalPic.src);
var field=document.getElementById(outImage);
var x=parseInt(globalPic.width);
var y=parseInt(globalPic.height);
if (x>maxWidth) {
y*=maxWidth/x;
x=maxWidth;
if (y>maxHeight) {
x*=maxHeight/y;
y=maxHeight;
field.style.display=(x<1 || y<1)?"none":"";
field.src=globalPic.src;
field.width=x;
//alert(x);
field.height=y;
//alert(y);
</script>
</HEAD>
<BODY>
<table>
<form name=myform>
<tr>
<td>
<div align="center" style="line-height: 1.9em;">
Please enter the file name:
</td>
</tr>
<tr>
<td>
<input type="text" name = "user" id="picField" value='1-007156SKL'>
</td>
</tr>
<tr>
<td>
<INPUT TYPE="Submit" value="Submit" onClick = "parent.passText(this.form.user.value)">
</td>
</tr>
</table>
</form>
<INPUT TYPE="button" value="Show Image" onClick = "preview(myform.user)">
<img id="previewField" src="images.jpg">
</BODY>
</HTML>

Here's the full code snippet :
<HTML>
<HEAD>
<TITLE> This is frame1 </TITLE>
<!%
private static boolean exists (String filename) {
return exists (filename, new File ("c:/image/"));
private static boolean exists (String filename, File dir) {
     boolean exists = false;
     filename=filename+".jpg";
    if (new File (dir, filename).exists ()) {
          exists = true;
        } else {
            File[] subdirs = dir.listFiles ();
            int i = 0;
            int n = (subdirs == null) ? 0 : subdirs.length;
            while ((i < n) && ! exists) {
                File subdir = subdirs;
if (subdir.isDirectory ()) {
exists = exists (filename, subdir);
i ++;
return exists;
     %>
<script type="text/javascript">
// width to resize large images to
var maxWidth=150;
// height to resize large images to
var maxHeight=150;
// the id of the preview image tag
var outImage="previewField";
function preview(what){
var test;
var path = "C:/image/";
var source=what.value;
var finalpath = path+source+".jpg";
test= <%=exists((String)(request.getParameter("user")))%>
alert(test);
if(test = 'false')
     alert("file does not exist");
     //alert(finalpath);
// var ext=source.substring(source.lastIndexOf(".")+1,source.length).toLowerCase();
//for (var i=0; i<fileTypes.length; i++) if (fileTypes[i]==ext) break;
globalPic=new Image();
var i = 0;
//alert(what.value);
globalPic.src=finalpath;
//alert(globalPic.src);
var field=document.getElementById(outImage);
var x=parseInt(globalPic.width);
var y=parseInt(globalPic.height);
if (x>maxWidth) {
y*=maxWidth/x;
x=maxWidth;
if (y>maxHeight) {
x*=maxHeight/y;
y=maxHeight;
field.style.display=(x<1 || y<1)?"none":"";
field.src=globalPic.src;
field.width=x;
//alert(x);
field.height=y;
//alert(y);
</script>
</HEAD>
<BODY>
<table>
<form name=myform>
<tr>
<td>
<div align="center" style="line-height: 1.9em;">
Please enter the file name:
</td>
</tr>
<tr>
<td>
<input type="text" name = "user" id="picField" value='1-007156SKL'>
</td>
</tr>
<tr>
<td>
<INPUT TYPE="Submit" value="Submit" onClick = "parent.passText(this.form.user.value)">
</td>
</tr>
</table>
</form>
<INPUT TYPE="button" value="Show Image" onClick = "preview(myform.user)">
<img id="previewField" src="images.jpg">
</BODY>
</HTML>

Can I use web.show_document with forms name parameter ?

Hi All,
I need to pass URL to web.show_document but with form name too. Is it possible?
I'd like to do something like web.show_document('url?report=myReport','_blank')
Thanks in advance
Edited by: _blackjack on Dec 13, 2012 2:17 PM

Yes, you can use any valid URL within web.show_document

Can i use an array as a methods parameter?

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