Skip Headers

Oracle® Application Server PL/SQL Web Toolkit Reference 10g Release 3 (10.1.3) B25598-01 |
| Home | Solution Area | Contents | Index

Previous | Next |

# 9 The owa_util Package

The owa_util package contains utility subprograms for performing operations such as getting the value of CGI environment variables, printing the data that is returned to the client, and printing the results of a query in an HTML table.

The owa_util contains three types of utility subprograms.

- Dynamic SQL Utilities enable you to produce pages with dynamically generated SQL code.

- HTML utilities enable you to retrieve the values of CGI environment variables and perform URL redirects.

- Date utilities enable correct date-handling. Date values are simple strings in HTML, but are treated as a data type by the Oracle database.

## 9.1 Summary

owa_util.bind_variables function - prepares a SQL query and binds variables to it.

owa_util.calendarprint procedure - prints a calendar.

owa_util.cellsprint procedure - prints the contents of a query in an HTML table.

owa_util.choose_date procedure - generates HTML form elements that allow the user to select a date.

owa_util.dateType data type - data type to hold date information.

owa_util.get_cgi_env function - returns the value of the specified CGI environment variable.

owa_util.get_owa_service_path function - returns the full virtual path for the PL/SQL Gateway.

owa_util.get_procedure function - returns the name of the procedure that is invoked by the PL/SQL Gateway.

owa_util.http_header_close procedure - closes the HTTP header.

owa_util.ident_arr data type - a data type

owa_util.ip_address data type - used by the owa_sec.get_client_ip function.

owa_util.listprint procedure - generates a HTML form element that contains data from a query.

owa_util.mime_header procedure - generates the Content-type line in the HTTP header.

owa_util.print_cgi_env procedure - generates a list of all CGI environment variables and their values.

owa_util.redirect_url procedure - generates the Location line in the HTTP header.

owa_util.showpage procedure - prints a page generated by the htp and htf packages in SQL*Plus.

owa_util.showsource procedure - prints the source for the specified subprogram.

owa_util.signature procedure - prints a line that says that the page is generated by the PL/SQL Agent.

owa_util.status_line procedure - generates the Status line in the HTTP header.

owa_util.tablePrint function - prints the data from a table in the database as an HTML table.

owa_util.todate function - converts dateType data to the standard PL/SQL date type.

owa_util.who_called_me procedure - returns information on the caller of the procedure.

## 9.2 owa_util.bind_variables function

This function prepares a SQL query by binding variables to it, and stores the output in an opened cursor. Use this function as a parameter to a procedure sending a dynamically generated query. Specify up to 25 bind variables.

Table 9-1 owa_util.bind_variables function

Properties | Definitions
--- | ---
Syntax: |
    owa_util.bind_variables(
       theQuery       in       varchar2   DEFAULT NULL
       bv1Name        in       varchar2   DEFAULT NULL
       bv1Value       in       varchar2   DEFAULT NULL
       bv2Name        in       varchar2   DEFAULT NULL
       bv2Value       in       varchar2   DEFAULT NULL
       bv3Name        in       varchar2   DEFAULT NULL
       bv3Value       in       varchar2   DEFAULT NULL
            ...
       bv25Name       in       varchar2   DEFAULT NULL
       bv25Value      in       varchar2   DEFAULT NULL) return integer;
Parameters: | theQuery - the SQL query statement. This must be a SELECT statement. bv1Name - the name of the variable. bv2Value - the value of the variable.
Returns: | An integer identifying the opened cursor.

## 9.3 owa_util.calendarprint procedure

This procedure creates a calendar in HTML. Each date in the calendar can contain any number of hypertext links. Design your query as follows:

- The first column is a DATE. This correlates the information produced by the query with the calendar output generated by the procedure.

- The query output must be sorted on this column using ORDER BY.

- The second column contains the text, if any, that you want printed for that date.

- The third column contains the destination for generated links. Each item in the second column becomes a hypertext link to the destination given in this column. If this column is omitted, the items in the second column are simple text, not links.

This procedure has 2 versions. Version 1 uses a hard-coded query stored in a varchar2 string. Version 2 uses a dynamic query prepared with the owa_util.bind_variables function.

Table 9-2 owa_util.calendarprint procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.calendarprint(
       p_query        in       varchar2
       p_mf_only      in       varchar2   DEFAULT 'N');

    owa_util.calendarprint(
       p_cursor       in       integer
       p_mf_only      in       varchar2   DEFAULT 'N');
Parameters: | p_query - a PL/SQL query. See the preceding description for details of the query return. p_cursor - a PL/SQL cursor containing the same format as p_query. p_mf_only - if "N" (the default), the generated calendar includes Sunday through Saturday. Otherwise, it includes Monday through Friday only.
Generates: | A calendar in the form of an HTML table with a visible border.

## 9.4 owa_util.cellsprint procedure

This procedure generates an HTML table from the output of a SQL query. SQL atomic data items are mapped to HTML cells and SQL rows to HTML rows. You must write the code to begin and end the HTML table. There are nine versions of this procedure:

- The first version passes the results of a query into an index table. Perform the query and cellsprint does the formatting. To have more control in generating an HTML table from the output of an SQL query, use the htf.format_cell function.

- The second and third versions display rows (up to the specified maximum) returned by the query or cursor.

- The fourth and fifth versions exclude aspecified number of rows from the HTML table. Use the fourth and fifth versions to scroll through result sets by saving the last row seen in a hidden form element.

The sixth through ninth versions are the same as the first four versions, except that they return a row count output parameter.

Table 9-3 owa_util.cellsprint procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.cellsprint(
       p_colCnt          in    integer
       p_resultTbl       in    vc_arr
       p_format_numbers  in    varchar2   DEFAULT NULL);
    owa_util.cellsprint(
       p_theQuery        in    varchar2
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL);
    owa_util.cellsprint(
       p_theCursor       in    integer
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL);
    owa_util.cellsprint(
       p_theQuery        in    varchar2
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL
       p_skip_rec        in    number      DEFAULT 0
       p_more_data       out   boolean);
    owa_util.cellsprint(
       p_theCursor       in    integer
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL
       p_skip_rec        in    number     DEFAULT 0
       p_more_data       out   boolean);
    owa_util.cellsprint(
       p_theQuery        in    varchar2
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL
       p_reccnt          out   number);
    owa_util.cellsprint(
       p_theCursor       in    integer
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL
       p_reccnt          out   number);
    owa_util.cellsprint(
       p_theQuery        in    varchar2
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL
       p_skip_rec        in    number     DEFAULT 0
       p_more_data       out   boolean
       p_reccnt          out   number);
    owa_util.cellsprint(
       p_theCursor       in    integer
       p_max_rows        in    number     DEFAULT 100
       p_format_numbers  in    varchar2   DEFAULT NULL
       p_skip_rec        in    number     DEFAULT 0
       p_more_data       out   boolean
       p_reccnt          out   number);
Parameters: | p_colCnt - the number of columns in the table. p_theQuery - a SQL SELECT statement. p_theCursor - a cursor ID. This can be the return value from the owa_util.bind_variables function. p_max_rows - the maximum number of rows to print. p_format_numbers - if the value of this parameter is not NULL, number fields are right-justified and rounded to two decimal places. p_skip_rec - the number of rows to exclude from the HTML table. p_more_data - TRUE if there are more rows in the query or cursor, FALSE otherwise. p_reccnt - the number of rows that have been returned by the query. This value does not include skipped rows (if any). p_resultTbl - the index table which will contain the result of the query. Each entry in the query will correspond to one column value.
Generates: |
    <tr><td>QueryResultItem</td><td>QueryResultItem</td></tr>
    <tr><td>QueryResultItem</td><td>QueryResultItem</td></tr>

## 9.5 owa_util.choose_date procedure

This procedure generates three HTML form elements that allow the user to select the day, the month, and the year. The parameter in the procedure that receives the data from these elements must be a owa_util.dateType data type. Use the owa_util.todate function to convert the owa_util.dateType data type value to the standard Oracle Database version 7 DATE data type.

Table 9-4 owa_util.choose_date procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.choose_date(
       p_name         in       varchar2,
       p_date         in       date       DEFAULT SYSDATE);
Parameters: | p_name - the name of the form elements. p_date - the initial date that is selected when the HTML page is displayed.
Generates: |
    <SELECT NAME="p_name" SIZE="1">
    <OPTION value="01">1
         ...
    <OPTION value="31">31
    </SELECT>
    -
    <SELECT NAME="p_name" SIZE="1">
    <OPTION value="01">JAN
         ...
    <OPTION value="12">DEC
    </SELECT>
    -
    <SELECT NAME="p_name" SIZE="1">
    <OPTION value="1992">1992
         ...
    <OPTION value="2002">2002
    </SELECT>

## 9.6 owa_util.dateType data type

The owa_util.todate function converts an item of this type to the type DATE, which is understood and properly handled as data by the database. The procedure owa_util.choose_date procedure enables the user to select the desired date.

Table 9-5 owa_util.dateType data type

Properties | Definitions
--- | ---
Syntax: |
    type dateType is table of varchar2(10) index by binary_integer;
Returns: | Not applicable.

## 9.7 owa_util.get_cgi_env function

This function returns the value of the specified CGI environment variable. Although the WRB is not operated through CGI, many WRB cartridges, including the PL/SQL Gateway, can make use of CGI environment variables.

Table 9-6 owa_util.get_cgi_env function

Properties | Definitions
--- | ---
Syntax: |
    owa_util.get_cgi_env(param_name in varchar2) return varchar2;
Parameters: | param_name - the name of the CGI environment variable. It is case-insensitive. Get the values of all CGI environment variables except for QUERY_STRING because the PL/SQL Gateway parses the value of QUERY_STRING to determine the parameters to pass to the stored procedure.
Returns: | The value of the specified CGI environment variable. If the variable is not defined, the function returns NULL.

## 9.8 owa_util.get_owa_service_path function

This function returns the full virtual path of the PL/SQL Gateway that is handling the request.

Table 9-7 owa_util.get_owa_service_path function

Properties | Definitions
--- | ---
Syntax: |
    owa_util.get_owa_service_path return varchar2;
Parameters: | None.
Returns: | A virtual path of the PL/SQL Gateway that is handling the request.

## 9.9 owa_util.get_procedure function

This function returns the name of the procedure that is being invoked by the PL/SQL Gateway.

Table 9-8 owa_util.get_procedure function

Properties | Definitions
--- | ---
Syntax: |
    owa_util.get_procedure return varchar2;
Parameters: | None.
Returns: | The name of a procedure, including the package name if the procedure is defined in a package.

## 9.10 owa_util.http_header_close procedure

This procedure generates a newline character to close the HTTP header. Use this procedure if you have not closed the header by using the bclose_header parameter in calls such as owa_util.mime_header procedure, owa_util.redirect_url procedure, or owa_util.status_line procedure. The HTTP header must be closed before any `htp.print` or `htp.prn` calls.

Table 9-9 owa_util.http_header_close procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.http_header_close;
Parameters: | None.
Generates: | A newline character, which closes the HTTP header.

## 9.11 owa_util.ident_arr data type

This data type is used for an array.

Table 9-10 owa_util.ident_arr data type

Properties | Definitions
--- | ---
Syntax: |
    type ident_arr is table of varchar2(30) index by binary_integer;
Returns: | Not applicable.

## 9.12 owa_util.ip_address data type

This data type is used by the owa_sec.get_client_ip function.

Table 9-11 owa_util.ip_address data type

Properties | Definitions
--- | ---
Syntax: |
    type ip_address is table of integer index by binary_integer;
Returns: | Not applicable.

## 9.13 owa_util.listprint procedure

This procedure generates an HTML selection list form element from the output of a SQL query. The columns in the output of the query are handled in the following manner:

- The first column specifies the values that are sent back. These values are for the VALUE attribute of the OPTION tag.

- The second column specifies the values that the user sees.

- The third column specifies whether or not the row is marked as SELECTED in the OPTION tag. If the value is not NULL, the row is selected.

There are two versions of this procedure. The first version contains a hard-coded SQL query, and the second version uses a dynamic query prepared with the owa_util.bind_variables function.

Table 9-12 owa_util.listprint procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.listprint(
       p_theQuery     in       varchar2
       p_cname        in       varchar2
       p_nsize        in       number
       p_multiple     in       boolean   DEFAULT FALSE);

    owa_util.listprint(
       p_theCursor    in    integer
       p_cname        in       varchar2
       p_nsize        in       number
       p_multiple     in       boolean   DEFAULT FALSE);
Parameters: | p_theQuery - the SQL query. p_theCursor - the cursor ID. This can be the return value from the owa_util.bind_variables function. p_cname - the name of the HTML form element. p_nsize - the size of the form element (this controls how many items the user can see without scrolling). p_multiple - whether multiple selection is permitted.
Generates: |
    <SELECT NAME="p_cname" SIZE="p_nsize">
    <OPTION SELECTED value='value_from_the_first_column'>value_from_the_second_column
    <OPTION SELECTED value='value_from_the_first_column'>value_from_the_second_column
         ...
    </SELECT>

## 9.14 owa_util.mime_header procedure

This procedure changes the default MIME header that the script returns. This procedure must come before any `htp.prin`t or `htp.prn` calls to direct the script not to use the default MIME header.

Table 9-13 owa_util.mime_header procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.mime_header(
       ccontent_type  in       varchar2   DEFAULT 'text/html',
       bclose_header  in       boolean    DEFAULT TRUE,
       ccharset       in       varchar2   DEFAULT NULL);
Parameters: | ccontent_type - the MIME type to generate. bclose_header - whether or not to close the HTTP header. If TRUE, two newlines are sent, which closes the HTTP header. Otherwise, one newline is sent, and the HTTP header remains open. ccharset - the character set to use.
Generates: | Content-type: <ccontent_type>; charset=<ccharset>
Example: |
    owa_util.mime_header('text/plain', false, 'ISO-8859-4')
    generates:
    Content-type: text/plain; charset=ISO-8859-4\n

## 9.15 owa_util.print_cgi_env procedure

This procedure generates all the CGI environment variables and their values made available by the PL/SQL Gateway to the stored procedure.

Table 9-14 owa_util.print_cgi_env procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.print_cgi_env;
Parameters: | None.
Generates: | A list in the following format:
    cgi_env_var_name = value\n

## 9.16 owa_util.redirect_url procedure

This procedure specifies that the application server is to visit the specified URL. The URL may specify either a web page to return or a program to execute. This procedure must come before any htp or htf procedure or function call.

Table 9-15 owa_util.redirect_url procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.redirect_url(
       curl           in       varchar2
       bclose_header  in       boolean    DEFAULT TRUE);
Parameters: | curl - the URL to visit. bclose_header - whether or not to close the HTTP header. If TRUE, two newlines are sent, which closes the HTTP header. Otherwise, one newline is sent, and the HTTP header is still open.
Generates: | Location: <curl>\n\n

## 9.17 owa_util.showpage procedure

This procedure prints out the HTML output of a procedure in SQL*Plus, SQL*DBA, or Oracle Server Manager. The procedure must use the`htp` or`htf` packages to generate the HTML page, and this procedure must be issued after the procedure has been called and before any other HTP or HTF subprograms are directly or indirectly called. This method is useful for generating pages filled with static data. This procedure uses dbms_output and is limited to 255 characters for each line and an overall buffer size of 1,000,000 bytes.

Table 9-16 owa_util.showpage procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.showpage;
Parameters: | None.
Generates: | The output of htp procedure is displayed in SQL*Plus, SQL*DBA, or Oracle Server Manager. For example:
    SQL> set serveroutput on
    SQL> spool gretzky.html
    SQL> execute hockey.pass("Gretzky")
    SQL> execute owa_util.showpage
    SQL> exit
This would generate an HTML page that could be accessed from Web browsers.

## 9.18 owa_util.showsource procedure

This procedure prints the source of the specified procedure, function, or package. If a procedure or function which belongs to a package is specified, then the entire package is displayed.

Table 9-17 owa_util.showsource procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.showsource (cname in varchar2);
Parameters: | cname - name of the procedure or function.
Generates: | The source code of the specified function, procedure, or package.

## 9.19 owa_util.signature procedure

This procedure generates an HTML line followed by a signature line on the HTML document. If a parameter is specified, the procedure also generates a hypertext link to view the PL/SQL source for that procedure. The link calls the owa_util.showsource procedure.

Table 9-18 owa_util.signature procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.signature;
    owa_util.signature (cname in varchar2);
Parameters: | cname - the function or procedure whose source you want to show.
Generates: | Without a parameter, the procedure generates a line that looks like the following:
    This page was produced by the PL/SQL Agent on August 9, 2001 09:30.
With a parameter, the procedure generates a signature line in the HTML document that looks like the following:
    This page was produced by the PL/SQL Agent on 8/09/01 09:30
    View PL/SQL Source

## 9.20 owa_util.status_line procedure

This procedure sends a standard HTTP status code to the client. This procedure must come before any `htp.print` or `htp.prn` calls so that the status code is returned as part of the header, rather than as "content data".

Table 9-19 owa_util.status_line procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.status_line(
       nstatus        in       integer,
       creason        in       varchar2   DEFAULT NULL
       bclose_header  in       boolean    DEFAULT TRUE);
Parameters: | nstatus - the status code. creason - the string for the status code. bclose_header - whether or not to close the HTTP header. If TRUE, two newlines are sent, which closes the HTTP header. Otherwise, one newline is sent, and the HTTP header is still open.
Generates: | Status: <nstatus> <creason>\n\n

## 9.21 owa_util.tablePrint function

This function generates either preformatted tables or HTML tables (depending on the capabilities of the user's browser) from database tables. RAW columns are supported, but LONG RAW columns are not. References to LONG RAW columns will print the result 'Not Printable'. In this function, cattributes is the second, rather than the last, parameter.

Table 9-20 owa_util.tablePrint function

Properties | Definitions
--- | ---
Syntax: |
    owa_util.tablePrint(
       ctable         in       varchar2
       cattributes    in       varchar2   DEFAULT NULL
       ntable_type    in       integer    DEFAULT HTML_TABLE
       ccolumns       in       varchar2   DEFAULT '*'
       cclauses       in    varchar2   DEFAULT NULL
       ccol_aliases   in       varchar2   DEFAULT NULL
       nrow_min       in       number     DEFAULT 0
       nrow_max       in       number     DEFAULT NULL) return boolean;
Parameters: | ctable - the database table. cattributes - other attributes to be included as-is in the tag. ntable_type - how to generate the table. Specify "`HTML_TABLE`" to generate the table using <TABLE> tags or "`PRE_TABLE`" to generate the table using the <PRE> tags. ccolumns - a comma-delimited list of columns from ctable to include in the generated table. cclauses - WHERE or ORDER BY clauses, which specify which rows to retrieve from the database table, and how to order them. ccol_aliases - a comma-delimited list of headings for the generated table. nrow_min - the first row, of those retrieved, to display. nrow_max - the last row, of those retrieved, to display.
Generates: | A preformatted or HTML table. Returns TRUE if there are more rows beyond the nrow_max requested, FALSE otherwise.
Examples: | For browsers that do not support HTML tables, create the following procedure:
    create or replace procedure showemps is
    ignore_more boolean;
    begin
    ignore_more := owa_util.tablePrint('emp', 'BORDER', OWA_UTIL.PRE_TABLE);
    end;
Requesting a URL such as: `http://myhost:8080/ows-bin/hr/plsql/showemps` returns the following to the client:
    <PRE>
    -----------------------------------------------------------------
    | EMPNO |ENAME |JOB      |MGR   |HIREDATE   | SAL | COMM | DEPTNO |
    -----------------------------------------------------------------
    | 7369| SMITH  | CLERK   | 7902 | 17-DEC-80 | 800  |     | 20     |
    | 7499| ALLEN  | SALESMAN| 7698 | 20-FEB-81 | 1600 | 300 | 30     |
    | 7521| WARD   | SALESMAN| 7698 | 22-FEB-81 | 1250 | 500 | 30     |
    | 7566| JONES  | MANAGER | 7839 | 02-APR-81 | 2975 |     | 20     |
    | 7654| MARTIN | SALESMAN| 7698 | 28-SEP-81 | 1250 | 1400| 30     |
    | 7698| BLAKE  | MANAGER | 7839 | 01-MAY-81 | 2850 |     | 30     |
    | 7782| CLARK  | MANAGER | 7839 | 09-JUN-81 | 2450 |     | 10     |
    | 7788| SCOTT  | ANALYST | 7566 | 09-DEC-82 | 3000 |     | 20     |
    | 7839| KING   |PRESIDENT|      | 17-NOV-81 | 5000 |     | 10     |
    | 7844| TURNER | SALESMAN| 7698 | 08-SEP-81 | 1500 | 0   | 30     |
    | 7876| ADAMS  | CLERK   | 7788 | 12-JAN-83 | 1100 |     | 20     |
    | 7900| JAMES  | CLERK   | 7698 | 03-DEC-81 | 950  |     | 30     |
    | 7902| FORD   | ANALYST | 7566 | 03-DEC-81 | 3000 |     | 20     |
    | 7934| MILLER | CLERK   | 7782 | 23-JAN-82 | 1300 |     | 10     |
    -----------------------------------------------------------------
    </PRE>
To view the employees in department 10, and only their employee ids, names, and salaries, create the following procedure:
    create or replace procedure showemps_10 is
     ignore_more boolean;
    begin
     ignore_more := owa_util.tablePrint
        ('EMP', 'BORDER', OWA_UTIL.PRE_TABLE,
     'empno, ename, sal',
     'where deptno=10 order by empno',
     'Employee Number, Name, Salary');
    end;
| A request for a URL like http://myhost:8080/ows-bin/hr/plsql/showemps_10 would return the following to the client:
    <PRE>
    -------------------------------------
    | Employee Number |Name     | Salary |
    -------------------------------------
    | 7782            | CLARK   | 2450   |
    | 7839            | KING    | 5000   |
    | 7934            | MILLER  | 1300   |
    -------------------------------------
    </PRE>
For browsers that support HTML tables, to view the department table in an HTML table, create the following procedure:
    create or replace procedure showdept is
     ignore_more boolean;
    begin
     ignore_more := owa_util.tablePrint('dept', 'BORDER');
    end;
| A request for a URL like http://myhost:8080/ows-bin/hr/plsql/showdept would return the following to the client:
    <TABLE BORDER>
    <TR>
    <TH>DEPTNO</TH>
    <TH>DNAME</TH>
    <TH>LOC</TH>
    </TR>
    <TR>
    <TD ALIGN="LEFT">10</TD>
    <TD ALIGN="LEFT">ACCOUNTING</TD>
    <TD ALIGN="LEFT">NEW YORK</TD>
    </TR>
    <TR>
    <TD ALIGN="LEFT">20</TD>
    <TD ALIGN="LEFT">RESEARCH</TD>
    <TD ALIGN="LEFT">DALLAS</TD>
    </TR>
    <TR>
    <TD ALIGN="LEFT">30</TD>
    <TD ALIGN="LEFT">SALES</TD>
    <TD ALIGN="LEFT">CHICAGO</TD>
    </TR>
    <TR>
    <TD ALIGN="LEFT">40</TD>
    <TD ALIGN="LEFT">OPERATIONS</TD>
    <TD ALIGN="LEFT">BOSTON</TD>
    </TR>
    </TABLE>
A Web browser would format this to look like the following table:
      --------------------------------------
      | DEPTNO  | DNAME         | LOC      |
      |------------------------------------|
      | 10      | ACCOUNTING    | NEW YORK |
      | 20      | RESEARCH      | DALLAS   |
      | 30      | SALES         | CHICAGO  |
      --------------------------------------

## 9.22 owa_util.todate function

This function converts the owa_util.dateType data type to the standard Oracle database DATE type.

Table 9-21 owa_util.todate function

Properties | Definitions
--- | ---
Syntax: |
    owa_util.todate(p_dateArray in dateType) return date;
Parameters: | p_dateArray - the value to convert.
Generates | A standard DATE.

## 9.23 owa_util.who_called_me procedure

This procedure returns information (in the form of output parameters) about the PL/SQL code unit that invoked it.

Table 9-22 owa_util.who_called_me procedure

Properties | Definitions
--- | ---
Syntax: |
    owa_util.who_called_me(
       owner          out      varchar2
       name           out      varchar2
       lineno         out      number
       caller_t       out      varchar2);
Parameters: | owner - the owner of the program unit. name - the name of the program unit. This is the name of the package, if the calling program unit is wrapped in a package, and the name of the procedure or function if the calling program unit is a standalone procedure or function. If the calling program unit is part of an anonymous block, this is NULL. lineno - the line number within the program unit where the call was made. caller_t - the type of program unit that made the call. The possibilities are: package body, anonymous block, procedure, and function. Procedure and function are only for standalone procedures and functions.
Generates | Not applicable.