Itab and sorting efficiency

Hi,
I only want the earliest date of a date field (non unique) in the database table...
my way of doing...
1) create a standard itab with only the date field.
2) select all the records for that date field into the itab.
3) collect into another standard itab with same structure to remove duplicates.
4) sort the itab in acsending.
5) read from the itab with index 1.
any other better ways in terms of performance or code efficiency?
if i do the sort in the select statement (eg. order by), it would be slower right?
Thanks,
Charles
abap newbie

Hi,
It depends on the type of table you use.
1)With a COLLECT for standard tables, a hash function is created internally. Using this hash function results in good performance. The hash function for standard tables is, however, non-persistent, since it is destroyed by each INSERT, DELETE, and so on; after which performance is reduced with a COLLECT all fields that are not part of the key must have a numeric type.
2)With the COLLECT statement, the contents of the work area is added to an entry with the same key or added to the table as a new entry. This allows you to create aggregated internal tables, thereby reducing data volume.COLLECT searches in the internal table for a data record according to the table type and defined key. If it finds an entry in the table, it adds all numeric fields of the work area or header that are not part of the key to the corresponding fields of the entry. If no entry is found, the contents of the work area or header row are added as a new table entry.You can only use the COLLECT statement with internal tables whose non-key fields are all numeric (type I, P, or F). If not, you get a syntax error. From SAP Basis release 4.0A, the table key may contain numeric fields.
The COLLECT statement is internally optimized for standard tables so that the response time is constant. This optimization applies as long as the tables are not modified with DELETE, INSERT, or SORT (non-persistent hash function). Using the latter instructions loses the rapid internal access, and leads to linearly increasing access costs for the COLLECT.
3)With hashed and sorted tables, the cost of the COLLECT statement is constant, even if you use DELETE, INSERT or SORT.
For the DELETE ADJACENT DUPLICATES the internal table should be sorted one before you write the statement.
Thanks,
Balaji

Similar Messages

Standard and sorted itab

what is the diff between standard and sorted itab

Hi Abhay,
check the following explanation.
<b>Standard tables</b>
This is the most appropriate type if you are going to address the individual table entries using the index. Index access is the quickest possible access. You should fill a standard table by appending lines (ABAP APPENDstatement), and read, modify and delete entries by specifying the index (INDEX option with the relevant ABAP command). The access time for a standard table increases in a linear relationship with the number of table entries. If you need key access, standard tables are particularly useful if you can fill and process the table in separate steps. For example, you could fill the table by appending entries, and then sort it. If you use the binary search option (BINARY) with key access, the response time is logarithmically proportional to the number of table entries.
<b>Sorted tables</b>
This is the most appropriate type if you need a table which is sorted as you fill it. You fill sorted tables using the INSERTstatement. Entries are inserted according to the sort sequence defined through the table key. Any illegal entries are recognized as soon as you try to add them to the table. The response time for key access is logarithmically proportional to the number of table entries, since the system always uses a binary search. Sorted tables are particularly useful for partially sequential processing in a LOOP if you specify the beginning of the table key in the WHEREcondition.
Hope this helps.
Regards,
kinshuk

Append error message to itab and download to excel

Hi GURUS,
Need urgent help
I have an internal table ( say columns a,b,c)
I need to validate the fields and upload to ztable.
If any of the row fails during validation. I need to write a corresponding message and append it to the contents of itab--output itab( same as itab) and then download the output internaltable
Please send some code, if any one has implemented
THanks in advance

please see below example code :
Program    : ZLWMI151_UPLOAD(Data load to ZBATCH_CROSS_REF Table)
Type       : Upload program
Author     : Seshu Maramreddy
Date       : 05/16/2005
Transport : DV3K919574
Transaction: None
Description: This program will get the data from XLS File
             and it upload to ZBATCH_CROSS_REF Table
REPORT ZLWMI151_UPLOAD no standard page heading
                       line-size 100 line-count 60.
*tables : zbatch_cross_ref.
data : begin of t_text occurs 0,
       werks(4) type c,
       cmatnr(15) type c,
       srlno(12) type n,
       matnr(7) type n,
       charg(10) type n,
       end of t_text.
data: begin of t_zbatch occurs 0,
      werks like zbatch_cross_ref-werks,
      cmatnr like zbatch_cross_ref-cmatnr,
      srlno like zbatch_cross_ref-srlno,
      matnr like zbatch_cross_ref-matnr,
      charg like zbatch_cross_ref-charg,
      end of t_zbatch.
data : g_repid like sy-repid,
       g_line like sy-index,
       g_line1 like sy-index,
       $v_start_col         type i value '1',
       $v_start_row         type i value '2',
       $v_end_col           type i value '256',
       $v_end_row           type i value '65536',
       gd_currentrow type i.
data: itab like alsmex_tabline occurs 0 with header line.
data : t_final like zbatch_cross_ref occurs 0 with header line.
selection-screen : begin of block blk with frame title text.
parameters : p_file like rlgrap-filename obligatory.
selection-screen : end of block blk.
initialization.
g_repid = sy-repid.
at selection-screen on value-request for p_file.
CALL FUNCTION 'F4_FILENAME'
       EXPORTING
            PROGRAM_NAME = g_repid
       IMPORTING
            FILE_NAME    = p_file.
start-of-selection.
Uploading the data into Internal Table
perform upload_data.
perform modify_table.
top-of-page.
CALL FUNCTION 'Z_HEADER'
EXPORTING
    FLEX_TEXT1       =
    FLEX_TEXT2       =
    FLEX_TEXT3       =
*&      Form upload_data
      text
FORM upload_data.
CALL FUNCTION 'ALSM_EXCEL_TO_INTERNAL_TABLE'
       EXPORTING
            FILENAME                = p_file
            I_BEGIN_COL             = $v_start_col
            I_BEGIN_ROW             = $v_start_row
            I_END_COL               = $v_end_col
            I_END_ROW               = $v_end_row
       TABLES
            INTERN                  = itab
       EXCEPTIONS
            INCONSISTENT_PARAMETERS = 1
            UPLOAD_OLE              = 2
            OTHERS                  = 3.
IF SY-SUBRC <> 0.
    write:/10 'File '.
ENDIF.
if sy-subrc eq 0.
    read table itab index 1.
    gd_currentrow = itab-row.
    loop at itab.
      if itab-row ne gd_currentrow.
        append t_text.
        clear t_text.
        gd_currentrow = itab-row.
      endif.
      case itab-col.
        when '0001'.
          t_text-werks = itab-value.
        when '0002'.
          t_text-cmatnr = itab-value.
        when '0003'.
          t_text-srlno = itab-value.
        when '0004'.
          t_text-matnr = itab-value.
        when '0005'.
          t_text-charg = itab-value.
      endcase.
    endloop.
endif.
append t_text.
ENDFORM.                    " upload_data
*&      Form modify_table
      Modify the table ZBATCH_CROSS_REF
FORM modify_table.
loop at t_text.
    t_final-werks = t_text-werks.
    t_final-cmatnr = t_text-cmatnr.
    t_final-srlno = t_text-srlno.
    t_final-matnr = t_text-matnr.
    t_final-charg = t_text-charg.
    t_final-erdat = sy-datum.
    t_final-erzet = sy-uzeit.
    t_final-ernam = sy-uname.
    t_final-rstat = 'U'.
    append t_final.
    clear t_final.
endloop.
delete t_final where werks = ''.
describe table t_final lines g_line.
sort t_final by werks cmatnr srlno.
Deleting the Duplicate Records
perform select_data.
describe table t_final lines g_line1.
modify zbatch_cross_ref from table t_final.
if sy-subrc ne 0.
    write:/ 'Updation failed'.
else.
    Skip 1.
    Write:/12 'Updation has been Completed Sucessfully'.
    skip 1.
    Write:/12 'Records in file ',42 g_line .
    write:/12 'Updated records in Table',42 g_line1.
endif.
delete from zbatch_cross_ref where werks = ''.
ENDFORM.                    " modify_table
*&      Form select_data
      Deleting the duplicate records
FORM select_data.
select werks
         cmatnr
         srlno from zbatch_cross_ref
         into table t_zbatch for all entries in t_final
         where werks = t_final-werks
         and cmatnr = t_final-cmatnr
         and srlno = t_final-srlno.
sort t_zbatch by werks cmatnr srlno.
loop at t_zbatch.
    read table t_final with key werks = t_zbatch-werks
                                cmatnr = t_zbatch-cmatnr
                                srlno = t_zbatch-srlno.
    if sy-subrc eq 0.
      delete table t_final .
    endif.
    clear: t_zbatch,
           t_final.
endloop.
ENDFORM.                    " select_data
Reward points if it is useful
Thanks
Seshu

Can we pass IT table name dynamically to READ and SORT stmt

Hello All,
i have a requirement in which i am passing table name using a variable and want to read the same table: so my question is can we execute read and sort stmt with dynamic IT name. please see below for explaination.
v_itname = <it_2>.
now read using variable
READ table ( v_itname ) with key <field>.
and
SORT ( v_itname ) by (otab).
thanks
Mani

Hi ,
This can be done. Please refer to the codes below. Please note that the code will work if the itabs are of type standard table else it may dump.
You just need to replace the variables form the values from your internal table.
DATA: v_table1(10) TYPE c VALUE 'I_MARA',
      v_field(10) TYPE c VALUE 'MATNR',
      i_mara TYPE STANDARD TABLE OF mara.
FIELD-SYMBOLS : <fs_tab>   TYPE STANDARD TABLE,
                <fs_field> TYPE ANY.
DATA: otab TYPE abap_sortorder_tab,
oline TYPE abap_sortorder.
SELECT * UP TO 10 ROWS
FROM mara
INTO TABLE i_mara.
IF sy-subrc = 0.
ASSIGN (v_table1) TO <fs_tab>.
IF sy-subrc = 0.
    oline-name = v_field.
    APPEND oline TO otab.
    SORT <fs_tab> BY (otab).
    READ TABLE <fs_tab>
    WITH KEY (v_field) = '000000000020000989' "
    BINARY SEARCH
    TRANSPORTING NO FIELDS.
    IF sy-subrc = 0.
    ENDIF.
ENDIF.
ENDIF.
Regards,
Dev.

Apply custom repeat formatting, column deletion, and sorts?

I download a .csv sales report file weekly. Is there a way to create and apply a pre-determined/custom formatting, deletion of columns, and "sorts?"
The .csv data contains the same fields/headers on each week. Then every week I go through and delete the columns that I don't need and sort the data on the same criteria. Is there a way to save these steps and apply them with each new report I open?
It would be the equivant in Photoshop, of "recording" "actions" and "playing" them on opened files.

There is no way to rtecord actions but if you describe exactly what you need, I may try to write a script doing the trick.
The most efficient scheme would be to send to my mailbox an exemple of the csv file (ten rows would be sufficient) and the Numbers document which you want to get starting from this source.
Click my blue name to get my address.
Yvan KOENIG (VALLAURIS, France) mercredi 24 août 2011 21:29:19
iMac 21”5, i7, 2.8 GHz, 4 Gbytes, 1 Tbytes, mac OS X 10.6.8 and 10.7.0
My iDisk is : <http://public.me.com/koenigyvan>
Please : Search for questions similar to your own before submitting them to the community
To be the AW6 successor, iWork MUST integrate a TRUE DB, not a list organizer !

Sort up and sort Down push buttons in module pool with table control wizard

hi,
i have created 2 buttons for Sort up and sort Down push buttons in module pool with table control wizard
please any one can help me.
regards

Hi
Following code is to enable and disable the tbl control using two buttons. Just alter the code and for each button write the sort code.
REPORT YJAN27_SCREEN                                               .
TABLES: SFLIGHT, YFLIGHT_28.
TYPES: BEGIN OF struct1,
      carrid like sflight-carrid,
      connid like sflight-connid,
      fldate like sflight-fldate,
       END OF struct1.
CONTROLS TBL1 TYPE TABLEVIEW USING SCREEN 2700.
DATA: OK_CODE LIKE SY-UCOMM,
      CARRID LIKE SFLIGHT-CARRID,                                    "cols in tbl ctrl
      CONNID LIKE SFLIGHT-CONNID,
      FLDATE LIKE SFLIGHT-FLDATE,
      itab TYPE TABLE OF STRUCT1 WITH HEADER LINE,
      cols like line of TBL1-COLS,
      FLAG TYPE I.
FLAG = 1.
CALL SCREEN 2700.
*&      Module STATUS_2700 OUTPUT
*       text
MODULE STATUS_2700 OUTPUT.
SET PF-STATUS 'BACK'.
* SET TITLEBAR 'xxx'.
ENDMODULE.                 " STATUS_2700 OUTPUT
*&      Module USER_COMMAND_2700 INPUT
*       text
MODULE USER_COMMAND_2700 INPUT.
OK_CODE = SY-UCOMM.
CASE OK_CODE.
WHEN 'BACK'.
    LEAVE PROGRAM.
WHEN 'DIS'.                                                         "write code for sort up
    loop AT TBL1-COLS INTO COLS.
       COLS-SCREEN-INPUT = 0.
        MODIFY TBL1-COLS FROM COLS.
    ENDLOOP.
    FLAG = 2.
WHEN 'ENA'.                                                       "write code for sort down
    loop AT TBL1-COLS INTO COLS.
        COLS-SCREEN-INPUT = 1.
        MODIFY TBL1-COLS FROM COLS.
    ENDLOOP.
    FLAG = 1.
ENDCASE.
ENDMODULE.                 " USER_COMMAND_2700 INPUT
*&      Module GET_DATA OUTPUT
*       text
MODULE GET_DATA OUTPUT.
select carrid connid fldate from SFLIGHT into table itab.
ENDMODULE.                 " GET_DATA OUTPUT
*&      Module POPULATE_TBL OUTPUT
*       text
MODULE POPULATE_TBL OUTPUT.
    MOVE-CORRESPONDING ITAB TO SFLIGHT.
ENDMODULE.                 " POPULATE_TBL OUTPUT
*&      Module CHANGE_SCREEN OUTPUT
*       text
MODULE CHANGE_SCREEN OUTPUT.    " use this module if you want to hide the other button
CASE FLAG.
WHEN 1.
    LOOP AT SCREEN.
      IF SCREEN-NAME = 'B_ENA'.
        SCREEN-INVISIBLE = 1.
         MODIFY SCREEN.
      ENDIF.
    ENDLOOP.
    LOOP AT SCREEN.
      IF SCREEN-NAME = 'B_DIS'.
        SCREEN-INVISIBLE = 0.
         MODIFY SCREEN.
      ENDIF.
   ENDLOOP.
WHEN 2.
    LOOP AT SCREEN.
      IF SCREEN-NAME = 'B_DIS'.
        SCREEN-INVISIBLE = 1.
        MODIFY SCREEN.
      ENDIF.
    ENDLOOP.
    LOOP AT SCREEN.
      IF SCREEN-NAME = 'B_ENA'.
        SCREEN-INVISIBLE = 0.
         MODIFY SCREEN.
      ENDIF.
   ENDLOOP.
ENDCASE.
ENDMODULE.                 " CHANGE_SCREEN OUTPUT
PROCESS BEFORE OUTPUT.
MODULE STATUS_2700.
MODULE CHANGE_SCREEN.     " use this if you want to display one button at a time
MODULE GET_DATA.
loop at itab WITH control TBL1.
    MODULE POPULATE_TBL.       " populate tbl ctrl
endloop.
PROCESS AFTER INPUT.
MODULE USER_COMMAND_2700.    " do the sort operations
loop at itab.
endloop.
Hope this helps
Regards,
Jayanthi.K

Deleting Duplicate from ITAB without sorting????

Hi,
A challenging and interesting problem please help. I want to delete duplicates from an ITAB without sorting (so cant use delete adjacent duplicates)
data: begin of dpp occurs 0,
        val type i,
        end of dpp.
        dpp-val = 13.
        append dpp.
        dpp-val = 15.
        append dpp.
        dpp-val = 26.
        append dpp.
        dpp-val = 15.
        append dpp.
        dpp-val = 27
        append dpp.
        dpp-val = 15.
        append dpp.
As you see 15 is duplicated in DPP,,,how can duplicated 15 entries be deleted without sorting
                   VAL
     13
     15
     26
     15
     27
     15
thhnx
Edited by: Salman Akram on Oct 12, 2010 3:54 PM

Hi,
Loop through your DPP itab then append to another. try this:
DATA: BEGIN OF dpp OCCURS 0,
val TYPE i,
END OF dpp.
dpp-val = 13.
APPEND dpp.
dpp-val = 15.
APPEND dpp.
dpp-val = 26.
APPEND dpp.
dpp-val = 15.
APPEND dpp.
dpp-val = 27.
APPEND dpp.
dpp-val = 15.
APPEND dpp.
DATA: BEGIN OF dpp1 OCCURS 0.
        INCLUDE STRUCTURE dpp.
DATA: END OF dpp1.
LOOP AT dpp.
READ TABLE dpp1 WITH KEY val = dpp-val.
IF sy-subrc NE 0.
    APPEND dpp TO dpp1.
ELSE.
    CONTINUE.
ENDIF.
ENDLOOP.
REFRESH dpp.
dpp[] = dpp1[].
thanks.

What is the best way to scan and sort old photos in iPhoto

What is the best way to scan and sort old photos in iPhoto? They do not have digital dates.

Hey Chicago Sue,
Once you scan them and have them on your desktop. You should use Automator and assign the common IPTC tags to the images, so that when you do import them into iPhoto, they get recorded.
Here is an example of an action in Automator:

Grouping and sorting the data based on the parameter

Hi,
I need to display the total of item Cost i.e sub total based on parameter in Excel format
if value = 1 then (Subtotal by Manufacture) and sorting by Manufacture, Receipt Date, Organization, Item Code
if value = 2 then (Subtotal by Organization ) and sorting by Organization, Item, Serial Number
and at the end of report need to display full total
is it possible in excel output using the below xml , please guide me if i need to change the way of getting XML ouput or can be acheived using this.
Please find the xml , thanks in advance
<?xml version="1.0"?>

<ASWRECDTREP>
<LIST_G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>10</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PARTS</ORGANISATION_NAME>
<SERIAL_NUMBER>90699100802262</SERIAL_NUMBER>
<ITEM_CODE>OM906LA.007</ITEM_CODE>
<DESCRIPTION>MERCEDES SERIES 900 OFF HWY ENGINE 205 KW 0852</DESCRIPTION>
<MANUFACTURER>MER</MANUFACTURER>
<APPLICATION>INDL</APPLICATION>
<ITEM_COST>15009.09</ITEM_COST>
<MATERIAL_COST>685.25</MATERIAL_COST>
<PO_NUMBER>1001395</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>22-MAY-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>EUR</CURRENCY_CODE>
<PO_UNIT_PRICE>7431.3</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>10</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PARTS</ORGANISATION_NAME>
<SERIAL_NUMBER>90699100802285</SERIAL_NUMBER>
<ITEM_CODE>OM906LA.007</ITEM_CODE>
<DESCRIPTION>MERCEDES SERIES 900 OFF HWY ENGINE 205 KW 0852</DESCRIPTION>
<MANUFACTURER>MER</MANUFACTURER>
<APPLICATION>INDL</APPLICATION>
<ITEM_COST>15009.09</ITEM_COST>
<MATERIAL_COST>685.25</MATERIAL_COST>
<PO_NUMBER>1001395</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>22-MAY-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>EUR</CURRENCY_CODE>
<PO_UNIT_PRICE>7431.3</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>30</ORGANIZATION_CODE>
<ORGANISATION_NAME>Melbourne</ORGANISATION_NAME>
<SERIAL_NUMBER>6520107896</SERIAL_NUMBER>
<ITEM_CODE>3500.010</ITEM_CODE>
<DESCRIPTION>ALLISON 3000 SERIES ON HWY TRANSMISSION E018179</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>11126.11</ITEM_COST>
<MATERIAL_COST>664.23</MATERIAL_COST>
<PO_NUMBER>971515</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>14-APR-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>8063.3</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>30</ORGANIZATION_CODE>
<ORGANISATION_NAME>Melbourne</ORGANISATION_NAME>
<SERIAL_NUMBER>6510869062</SERIAL_NUMBER>
<ITEM_CODE>3200.010</ITEM_CODE>
<DESCRIPTION>ALLISON 3000 SERIES ON HWY TRANSMISSION E017944</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>11853.57</ITEM_COST>
<MATERIAL_COST>707.66</MATERIAL_COST>
<PO_NUMBER>982120</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>12-MAY-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>8251.6</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>40</ORGANIZATION_CODE>
<ORGANISATION_NAME>Brisbane</ORGANISATION_NAME>
<SERIAL_NUMBER>D6002 G6003</SERIAL_NUMBER>
<ITEM_CODE>520 SERIES.002</ITEM_CODE>
<DESCRIPTION>KONRAD 520 SERIES MARINE STERN DRIVE</DESCRIPTION>
<MANUFACTURER>OTH</MANUFACTURER>
<APPLICATION>MARI</APPLICATION>
<ITEM_COST>9296.95</ITEM_COST>
<MATERIAL_COST>482.91</MATERIAL_COST>
<PO_NUMBER>1009062</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>24-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>6939.29</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>40</ORGANIZATION_CODE>
<ORGANISATION_NAME>Brisbane</ORGANISATION_NAME>
<SERIAL_NUMBER>ABC123</SERIAL_NUMBER>
<ITEM_CODE>GM20541-KP1.001</ITEM_CODE>
<DESCRIPTION>KOHLER GENSET</DESCRIPTION>
<MANUFACTURER>KOH</MANUFACTURER>
<APPLICATION>PGEN</APPLICATION>
<ITEM_COST>756.83</ITEM_COST>
<MATERIAL_COST>.78</MATERIAL_COST>
<PO_NUMBER>1015156</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>14-OCT-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>AUD</CURRENCY_CODE>
<PO_UNIT_PRICE>20</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>40</ORGANIZATION_CODE>
<ORGANISATION_NAME>Brisbane</ORGANISATION_NAME>
<SERIAL_NUMBER>ABC124</SERIAL_NUMBER>
<ITEM_CODE>GM20541-KP1.001</ITEM_CODE>
<DESCRIPTION>KOHLER GENSET</DESCRIPTION>
<MANUFACTURER>KOH</MANUFACTURER>
<APPLICATION>PGEN</APPLICATION>
<ITEM_COST>756.83</ITEM_COST>
<MATERIAL_COST>.78</MATERIAL_COST>
<PO_NUMBER>1015156</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>14-OCT-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>AUD</CURRENCY_CODE>
<PO_UNIT_PRICE>20</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>06R1017763</SERIAL_NUMBER>
<ITEM_CODE>6062HK30.005</ITEM_CODE>
<DESCRIPTION>DETROIT SERIES 60 MARINE ENGINE 615 KW 2949322</DESCRIPTION>
<MANUFACTURER>MDD</MANUFACTURER>
<APPLICATION>MARI</APPLICATION>
<ITEM_COST>99125.34</ITEM_COST>
<MATERIAL_COST>2028.31</MATERIAL_COST>
<PO_NUMBER>883339</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>05-MAR-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>63768</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6310935001</SERIAL_NUMBER>
<ITEM_CODE>2500.003</ITEM_CODE>
<DESCRIPTION>ALLISON 2000 SERIES ON HWY TRANSMISSION E016189</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>4855.33</ITEM_COST>
<MATERIAL_COST>306.39</MATERIAL_COST>
<PO_NUMBER>1000221</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>01-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>3574.9</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6310935002</SERIAL_NUMBER>
<ITEM_CODE>2500.003</ITEM_CODE>
<DESCRIPTION>ALLISON 2000 SERIES ON HWY TRANSMISSION E016189</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>4855.33</ITEM_COST>
<MATERIAL_COST>306.39</MATERIAL_COST>
<PO_NUMBER>1000221</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>01-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>3574.9</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6310935003</SERIAL_NUMBER>
<ITEM_CODE>2500.003</ITEM_CODE>
<DESCRIPTION>ALLISON 2000 SERIES ON HWY TRANSMISSION E016189</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>4855.33</ITEM_COST>
<MATERIAL_COST>306.39</MATERIAL_COST>
<PO_NUMBER>1000221</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>01-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>3574.9</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6510876301</SERIAL_NUMBER>
<ITEM_CODE>T350R.004</ITEM_CODE>
<DESCRIPTION>ALLISON TORQMATIC ON HWY TRANSMISSION</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>9465.69</ITEM_COST>
<MATERIAL_COST>597.33</MATERIAL_COST>
<PO_NUMBER>1005777</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>23-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>6936.3</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6510876302</SERIAL_NUMBER>
<ITEM_CODE>T350R.004</ITEM_CODE>
<DESCRIPTION>ALLISON TORQMATIC ON HWY TRANSMISSION</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>9465.69</ITEM_COST>
<MATERIAL_COST>597.33</MATERIAL_COST>
<PO_NUMBER>1005777</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>23-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>6936.3</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6510876303</SERIAL_NUMBER>
<ITEM_CODE>T375R.002</ITEM_CODE>
<DESCRIPTION>ALLISON TORQMATIC ON HWY TRANSMISSION</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>10224.19</ITEM_COST>
<MATERIAL_COST>645.19</MATERIAL_COST>
<PO_NUMBER>1005777</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>23-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>7433.3</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6310940354</SERIAL_NUMBER>
<ITEM_CODE>2500.003</ITEM_CODE>
<DESCRIPTION>ALLISON 2000 SERIES ON HWY TRANSMISSION E016189</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>4855.33</ITEM_COST>
<MATERIAL_COST>306.39</MATERIAL_COST>
<PO_NUMBER>1005777</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>23-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>3574.9</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6310940355</SERIAL_NUMBER>
<ITEM_CODE>2500.003</ITEM_CODE>
<DESCRIPTION>ALLISON 2000 SERIES ON HWY TRANSMISSION E016189</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>4855.33</ITEM_COST>
<MATERIAL_COST>306.39</MATERIAL_COST>
<PO_NUMBER>1005777</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>23-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>3574.9</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6310940356</SERIAL_NUMBER>
<ITEM_CODE>2500.003</ITEM_CODE>
<DESCRIPTION>ALLISON 2000 SERIES ON HWY TRANSMISSION E016189</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>4855.33</ITEM_COST>
<MATERIAL_COST>306.39</MATERIAL_COST>
<PO_NUMBER>1005777</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>23-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>3574.9</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>6310940357</SERIAL_NUMBER>
<ITEM_CODE>2500.003</ITEM_CODE>
<DESCRIPTION>ALLISON 2000 SERIES ON HWY TRANSMISSION E016189</DESCRIPTION>
<MANUFACTURER>ATD</MANUFACTURER>
<APPLICATION>ONHY</APPLICATION>
<ITEM_COST>4855.33</ITEM_COST>
<MATERIAL_COST>306.39</MATERIAL_COST>
<PO_NUMBER>1005777</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>23-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>3574.9</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
<G_ASW_REC_DATE>
<ORGANIZATION_CODE>70</ORGANIZATION_CODE>
<ORGANISATION_NAME>NDC - PRODUCT</ORGANISATION_NAME>
<SERIAL_NUMBER>5272003543</SERIAL_NUMBER>
<ITEM_CODE>T1637K33.002</ITEM_CODE>
<DESCRIPTION>DETROIT SERIES 4000 INDUSTRIAL ENGINE 1865 KW 2456291</DESCRIPTION>
<MANUFACTURER>MDD</MANUFACTURER>
<APPLICATION>MNIG</APPLICATION>
<ITEM_COST>420083.16</ITEM_COST>
<MATERIAL_COST>3785.85</MATERIAL_COST>
<PO_NUMBER>921170</PO_NUMBER>
<TRANSACTION_RECEIPT_DATE>30-JUN-09</TRANSACTION_RECEIPT_DATE>
<VENDOR_LOT_NUM></VENDOR_LOT_NUM>
<CURRENCY_CODE>USD</CURRENCY_CODE>
<PO_UNIT_PRICE>301549</PO_UNIT_PRICE>
</G_ASW_REC_DATE>
</LIST_G_ASW_REC_DATE>
</ASWRECDTREP>
Best Regards,
Mahi

Hi Vetri,
I tried to implement the solution you have given and i am getting error,
I tried to see the output by loading the xml to the template given in BIP Blog in the following Link,
http://blogs.oracle.com/xmlpublisher/2007/05/left_up_down_right_group.html
I am getting the same error,Please help me how to overcome this.If possible send me the template that was working for you.
The error log is as follows:
ConfFile: C:\Program Files\Oracle\BI Publisher\BI Publisher Desktop\Template Builder for Word\config\xdoconfig.xml
Font Dir: C:\Program Files\Oracle\BI Publisher\BI Publisher Desktop\Template Builder for Word\fonts
Run XDO Start
Template: C:\Users\MAHESH\Desktop\Grouping.rtf
RTFProcessor setLocale: en-us
FOProcessor setData: C:\Users\MAHESH\Desktop\EmployeeListing.xml
FOProcessor setLocale: en-us
java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at oracle.apps.xdo.common.xml.XSLT10gR1.invokeProcessXSL(Unknown Source)
     at oracle.apps.xdo.common.xml.XSLT10gR1.transform(Unknown Source)
     at oracle.apps.xdo.common.xml.XSLT10gR1.transform(Unknown Source)
     at oracle.apps.xdo.common.xml.XSLTWrapper.transform(Unknown Source)
     at oracle.apps.xdo.template.fo.util.FOUtility.generateFO(Unknown Source)
     at oracle.apps.xdo.template.fo.util.FOUtility.generateFO(Unknown Source)
     at oracle.apps.xdo.template.FOProcessor.createFO(Unknown Source)
     at oracle.apps.xdo.template.FOProcessor.generate(Unknown Source)
     at RTF2PDF.runRTFto(RTF2PDF.java:629)
     at RTF2PDF.runXDO(RTF2PDF.java:439)
     at RTF2PDF.main(RTF2PDF.java:289)
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
     at oracle.xdo.parser.v2.XSLTContext.peekExprValue4Grouping(XSLTContext.java:871)
     at oracle.xdo.parser.v2.XPathFunctionCall.evaluate(XPathFunctionCall.java:536)
     at oracle.xdo.parser.v2.XPathFunctionCall.evaluate(XPathFunctionCall.java:583)
     at oracle.xdo.parser.v2.XSLVariable.getValue(XSLVariable.java:205)
     at oracle.xdo.parser.v2.XSLVariable.processAction(XSLVariable.java:117)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLResultElement.processAction(XSLResultElement.java:180)
     at oracle.xdo.parser.v2.XSLNode.processChildren(XSLNode.java:417)
     at oracle.xdo.parser.v2.XSLTemplate.processAction(XSLTemplate.java:191)
     at oracle.xdo.parser.v2.XSLStylesheet.execute(XSLStylesheet.java:512)
     at oracle.xdo.parser.v2.XSLStylesheet.execute(XSLStylesheet.java:489)
     at oracle.xdo.parser.v2.XSLProcessor.processXSL(XSLProcessor.java:271)
     at oracle.xdo.parser.v2.XSLProcessor.processXSL(XSLProcessor.java:155)
     at oracle.xdo.parser.v2.XSLProcessor.processXSL(XSLProcessor.java:192)
     ... 15 more
Best Regards,
Mahi

Questions on filtering and sorting an arraylist

Hello All,
I'm trying to figure out a better way to do this code, but what I'm doing is taking an arrayList and filtering it using iter.remove(), based on a criteria I have, then take the results and sort them. The code below works, but I was seeing class cast exceptions when I tried to do a ss.addAll(list);
, but it worked when I just added the set object. Why is this and is there a better way to do all this?
Set set = new HashSet();
List retList = new ArrayList();
SortedSet ss = new TreeSet();
for(Iterator iter = list.iterator(); iter.hasNext();){
.//More code...
iter.remove();
//Remove duplicates.
set.addAll(list);
ss.add(set);
retList.addAll(set);
return retList;

Your current code is adding the set (the hash set) as one element (the only element?) of the sorted set. Is this what you want to do? Would you rather add each element of the set to the sorted set?
I don't know about the class cast exceptions. If you want somebody's comment on this part, you may consider posting code and stack trace.
I think I'd rely on Collections.sort() for sorting rather than TreeSet. If you prefer TreeSet, why not skip the hash set in between?
Hope this helps.
Please remember the code button/tags.

How do I fix my problem with Artist and Sort Artist?

I have all my songs sorted by Artist and because I have songs that feature other artists I use the sort artist field.
In itunes it all looks fine but when I sync it with my iPod Nano 5th Gen one of the artists names comes up as the artist for all songs.
Eg. I have 5 B.o.B songs.The Artist field has B.o.B and the featured artist so it looks like -B.o.B feat. Hayley Williams-. The sort artist field along with album artist and sort album artist field are all only B.o.B.
My problem is that when I sync them onto my iPod all the songs by B.o.B appear under B.o.B feat. Rivers Cumo when I sort by Artist despite this only being the artist for one and all listed with the same format as above. They all also come up with the Artist as B.o.B feat. River Cumo when I play one of the songs.
Is there anyway to fix this so on my iPod they all appear under B.o.B when sorting by Artist but when I play the song it gives me the artist name? I'd prefer not to have to put the featured artist in the song title.

This sometimes happens if your MacBook battery is swollen, and pushes on the underside of the trackpad.
Some users forgot that an alternate input device, like a tablet, does not shut off when set aside -- it continues to provide input at the same time as the mouse you put your hand on.

How can I stop iPhoto from reidentifying faces I have already 'crossed', while still being able to identify and sort new faces.

iPhoto has detected faces of people I dont know, in my 'iPhoto faces' whenever I click the cross in the corner of the face (when sorting faces) the face temporarily disappears, but once I have uploaded a fresh batch of photos (and want to identify new faces) it automatically re-identifies the old photos that I don't want to have to sort again. How can I stop iPhoto from reidentifying faces I have already 'crossed', while still being able to identify and sort new faces.

Thank you, that makes sense (I think!) However, I need to be able to tell iPhoto who the people identified in my photos are, does that make sense? How do I identify the people in my new photos without clicking 'find faces'. I know that button searches through my photos to find faces, but it also gets me to the place where I identify the faces as my friends and family, is there a shortcut to get to that place without clicking 'find faces'? That is what I really need, please help!!

Adding new value in Pick list and sorted logic on basis of new value.

Hi All,
I have a requirement where I have to add a new value in seeded OAMessageBean and sort the page contents on basis of selected value.
I see in about this page and found out that no VO is attached with this field.
I assume that it attached somewhere in controller and tried to find out there but cannot able to find it there.Is there any way to find the VO which is attached to this bean?
Also how to add a new values in this seeded picklist as I can able to get handle to OAMessageBean in custom controller.
Please Help.
Regards,
889254

Hi Peddi,
Thanks a lot for your reply,
I tried to open that page in jdeveloper but I dont see any choice bean on the page.Also tried to open CO attached to this page but no clue.As I am able to the get handle of this choicebean in controller.Is there any way I can find out which VO attached to this choiceBean.
I tried using below depricated method and it is returning null
messageField.getListViewObject();
My another question is Can we add new value to choice bean In CO.
I tried to add it by below methods but these are not reflecting in the application.
messageField.addOption("TEMP");
messageField.addIndexedChild("TEMP");
Regards,
889254

Help needed for storing and sorting objects.

Hello
I have an assignment and it is to create a guessing game, here is the question,
In this assignment you are to write a game where a user or the computer is to guess a random
number between 1 and 1000. The program should for example read a guess from the keyboard, and
print whether the guess was too high, too low or correct. When the user has guessed the correct
number, the program is to print the number of guesses made.
The project must contain a class called Game, which has only one public method. The method must
be called start(), and, when run it starts the game. The game continues until the user chooses to
quit, either at the end of a game by answering no to the question or by typing 'quit' instead of a
guess. After each game has been played, the program is to ask the user for a name and insert this
together with the number of guesses into a high score list. When a game is started the program
should print the entire high score list, which must be sorted with the least number of guesses first
and the most last. Note, the list must be kept as long as the game-object is alive!
each score also
consists of the game time. In case there are two high scores with the same number of guesses, the
game time should decide which is better. The game time starts when the first guess is entered and
stops when the correct guess has been made. There should also be input checks in the program so
that it is impossible to input something wrong, i.e. it should be impossible to write an non-numeric
value then we are guessing a number, the only allowed answers for a yes/no question is yes or no,
every other input should yield an error message an the question should be printed again.
I understand how to code most of it, except I am not sure how to store the playerName, playerScore, playerTime and then sort that accordingly.
I came across hashmaps, but that wont work as the data values can be the same for score.
Is it only one object of lets say a highScore class, and each time the game finishes, it enters the values into an arrayList, I still dont understand how I can sort the array all at once.
Should it be sorted once for score, then another array created and sorted again, I dont get it I am confused.
Please help clarify this.

Implode wrote:
We had the arrayList/collections lecture today.
I asked the teacher about sorting objects and he started explaining hashmaps and then he mentioned another thing which we will only be learning next term, I'm sure we must only use what we have learned.
How exactly can this be done. I have asked a few questions in the post already.
ThanksWell, there was probably a gap in the communication. Hash maps (or hash tables, etc.) are instance of Map. Those are used to locate a value by its unique key. Generally, to speed up access, you implement a hashing function (this will be explained hopefully in class). Think of name-value pairs that are stored where the name is unique.
Contrast this with items that are sorted. Any List can be sorted because its elements are ordered. An ArrayList is ordered, generally, by the order you inserted the elements. However, any List can be given its own ordering via Comparable or Comparator. You can't do this with an ordinary Map. The purpose of a Map is speedy access to the name-value pairs, not sorting. The List likewise has different purposes, advantages, disadvantages, etc. List can be sorted.
A Map is generally similar to a Set. A Set is a vanilla collection that guarnatees uniqueness of each element (note, not name-value pairs, but simple elements). There is one concrete class of Map that can be sorted, TreeMap, but I doubt your professor was referring to that. The values or the keys can be returned from the Map and sorted separately, but again, I doubt he was referring to that.
Take a look at the Collections tutorial here on this site or Google one. It is fairly straightforward. Just keep in mind that things (generally) break down into Set, Map and List. There are combinations of these and different flavors (e.g., Queue, LinkedHashMap, etc.) But if you can learn how those three differ, you will go a long way towards understanding collections.
(Oh, and be sure to study up on iterators.)
- Saish

Sort Artist and Sort Album tags don't update

Having spent a lot of time over the years getting the metadata in my iTunes library just right, I've noticed a frustrating problem when it comes to iTunes Match.
I make use of 'Sort Artist' and 'Sort Album Artist' tags so that my library is sorted by artist surname (eg. Lennon, John).
This always worked correctly when I syncronised my music via iTunes, but since switching over to iTunes Match this has become problematic.
When I initially signed up for iTunes Match, my Library moved over correctly - honouring the sort order tags that I had added. However, When I add NEW music to the library and subsequently change the sort tag, the change does not propegate to iTunes Match (Though it does appear correct in iTunes on my Mac). So the result is now a mixed sort order on my iOS devices - some by first name and some by second.
Under iOS 5.0 and iTunes 10 I used to be able to get around this with a little forethought - I would turn iTunes Match OFF on the Mac before adding any new songs, then I would edit the tags and then switch Match back on. This would rescan the library and add the new tracks to the cloud complete with correct metadata.
This workaround no longer works under iOS 6 and iTunes 11.
I have tried switching iTunes match off on my iPhone and restarting it. This does not work either.
Does anyone else have this issue or know of a way to 'force' the metadata to be updated?
Any help would be appreciated.

I also am finding it impossible to convince my iPhone that the Album Sort field exists. This is especially odd considering when I view my Home Shared music from my iPhone, it works exactly correctly. I have verified that the tags are being uploaded to iTunes Match by viewing the songs from another computer that has iTunes Match. So, for some reason, iOS 6 will not sort by the Album Sort field when using iTunes Match music.
Does anyone have any sort of fix or workaround for this problem? I've submitted Feedback to Apple.

Itab and sorting efficiency

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