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Oracle® Database PL/SQL Packages and Types Reference
11g Release 1 (11.1)

B28419-03
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90 DBMS_PREPROCESSOR

The DBMS_PREPROCESSOR package provides an interface to print or retrieve the source text of a PL/SQL unit in its post-processed form.

This package contains the following topics


Using DBMS_PREPROCESSOR


Overview

There are three styles of subprograms.

  1. Subprograms that take a schema name, a unit type name, and the unit name.

  2. Subprograms that take a VARCHAR2 string which contains the source text of an arbitrary PL/SQL compilation unit.

  3. Subprograms that take a VARCHAR2 index-by table which contains the segmented source text of an arbitrary PL/SQL compilation unit.

Subprograms of the first style are used to print or retrieve the post-processed source text of a stored PL/SQL unit. The user must have the privileges necessary to view the original source text of this unit. The user must also specify the schema in which the unit is defined, the type of the unit, and the name of the unit. If the schema is null, then the current user schema is used. If the status of the stored unit is VALID and the user has the required privilege, then the post-processed source text is guaranteed to be the same as that of the unit the last time it was compiled. Subprograms of the second or third style are used to generate post-processed source text in the current user schema. The source text is passed in as a single VARCHAR2 string in the second style, or as a VARCHAR2 index-by table in the third style. The source text can represent an arbitrary PL/SQL compilation unit. A typical usage is to pass the source text of an anonymous block and generate its post-processed source text in the current user schema. The third style can be useful when the source text exceeds the VARCHAR2 length limit.


Operating Notes


Data Structures

The DBMS_PREPROCESSOR package defines a TABLE type.

Table Types

SOURCE_LINES_T Table Type


SOURCE_LINES_T Table Type

This table type stores lines of post-processed source text. It is used to hold PL/SQL source text both before and after it is processed. It is especially useful in cases in which the amount of text exceeds 32K.

Syntax

TYPE source_lines_t IS
    TABLE OF VARCHAR2(32767) INDEX BY BINARY_INTEGER;

Summary of DBMS_PREPROCESSOR Subprograms

Table 90-1 DBMS_PREPROCESSOR Package Subprograms

Subprogram Description

GET_POST_PROCESSED_SOURCE Functions

Returns the post-processed source text

PRINT_POST_PROCESSED_SOURCE Procedures

Prints post-processed source text



GET_POST_PROCESSED_SOURCE Functions

This overloaded function returns the post-processed source text. The different functionality of each form of syntax is presented along with the definition.

Syntax

Returns post-processed source text of a stored PL/SQL unit:

DBMS_PREPROCESSOR.GET_POST_PROCESSED_SOURCE (
   object_type    VARCHAR2,
   schema_name    VARCHAR2,
   object_name    VARCHAR2);
  RETURN source_lines_t;

Returns post-processed source text of a compilation unit:

DBMS_PREPROCESSOR.GET_POST_PROCESSED_SOURCE (
   source        VARCHAR2);
  RETURN source_lines_t;

Returns post-processed source text of an INDEX-BY table containing the source text of the compilation unit:

DBMS_PREPROCESSOR.GET_POST_PROCESSED_SOURCE (
   source        source_lines_t);
  RETURN source_lines_t;

Parameters

Table 90-2 GET_POST_PROCESSED_SOURCE Function Parameters

Parameter Description

object_type

Must be one of PACKAGE, PACKAGE BODY, PROCEDURE, FUNCTION, TYPE, TYPE, BODY or TRIGGER. Case sensitive.

schema_name

The schema name. Case insensitive unless a quoted identifier is used. If NULL, use current schema.

object_name

The name of the object.The object_type is always case insensitive. Case insensitive unless a quoted identifier is used.

source

The source text of the compilation unit

source_lines_t

INDEX-BY table containing the source text of the compilation unit. The source text is a concatenation of all the non-NULL INDEX-BY table elements in ascending index order.


Return Values

The function returns an INDEX-BY table containing the lines of the post-processed source text starting from index 1.

Usage Notes

Exceptions

Table 90-3 GET_POST_PROCESSED_SOURCE Function Exceptions

Exception Description

ORA-24234

Insufficient privileges or object does not exist

ORA-24235

Bad value for object type. Should be one of PACKAGE, PACKAGE BODY, PROCEDURE, FUNCTION, TYPE, TYPE, BODY or TRIGGER.

ORA-24236

The source text is empty

ORA-00931

Missing identifier. The object_name should not be NULL.

ORA-06502

Numeric or value error:

  • Character string buffer too small

  • A line is too long ( > 32767 bytes)



PRINT_POST_PROCESSED_SOURCE Procedures

This overloaded procedure calls DBMS_OUTPUT.PUT_LINE to let you view post-processed source text. The different functionality of each form of syntax is presented along with the definition.

Syntax

Prints post-processed source text of a stored PL/SQL unit:

DBMS_PREPROCESSOR.PRINT_POST_PROCESSED_SOURCE (
   object_type    VARCHAR2,
   schema_name    VARCHAR2,
   object_name    VARCHAR2);

Prints post-processed source text of a compilation unit:

DBMS_PREPROCESSOR.PRINT_POST_PROCESSED_SOURCE (
   source        VARCHAR2);

Prints post-processed source text of an INDEX-BY table containing the source text of the compilation unit:

DBMS_PREPROCESSOR.PRINT_POST_PROCESSED_SOURCE (
   source        source_lines_t);

Parameters

Table 90-4 PRINT_POST_PROCESSED_SOURCE Procedure Parameters

Parameter Description

object_type

Must be one of PACKAGE, PACKAGE BODY, PROCEDURE, FUNCTION, TYPE, TYPE, BODY or TRIGGER. Case sensitive.

schema_name

The schema name. Case insensitive unless a quoted identifier is used. If NULL, use current schema.

object_name

The name of the object.The object_type is always case insensitive. Case insensitive unless a quoted identifier is used.

source

The source text of the compilation unit

source_lines_t

INDEX-BY table containing the source text of the compilation unit. The source text is a concatenation of all the non-NULL INDEX-BY table elements in ascending index order.


Exceptions

Table 90-5 PRINT_POST_PROCESSED_SOURCE Procedure Exceptions

Exception Description

ORA-24234

Insufficient privileges or object does not exist

ORA-24235

Bad value for object type. Should be one of PACKAGE, PACKAGE BODY, PROCEDURE, FUNCTION, TYPE, TYPE, BODY or TRIGGER.

ORA-24236

The source text is empty

ORA-00931

Missing identifier. The object_name should not be NULL.

ORA-06502

Numeric or value error:

  • Character string buffer too small

  • A line is too long ( > 32767 bytes)


Usage Notes

The index-by table may contain holes. NULL elements are ignored when doing the concatenation.