Unlike Java, C#.net and other object oriented languages (OOP) PeopleCode API does not deliver built in application class or a StringBuilder class for concatenating many strings together in a loop.
However, recently I found out that PeopleSoft has delivered few utility application classes in their diagnostic plug-in application packages.
The main class we are interesting here is StringBuffer Class which provides basic functionality to work with a large amount of string concatenation operations within PeopleCode.
The StringBuffer class is not as comprehensive as StringBuilder class in Java or C#.net but it is good enough to do the string operations you want.
Here is the class definition (note: the image is an indication only)
The StringBuffer class is a simple (but useful) class which has
import PT_DIAGNOSTICS:*;
Lets see an example;
Even though StringBuffer class provides basic functionality to manipulate strings, it comes in handy if you are dealing with files in PeopleCode for example;
However, recently I found out that PeopleSoft has delivered few utility application classes in their diagnostic plug-in application packages.
The main class we are interesting here is StringBuffer Class which provides basic functionality to work with a large amount of string concatenation operations within PeopleCode.
The StringBuffer class is not as comprehensive as StringBuilder class in Java or C#.net but it is good enough to do the string operations you want.
Here is the class definition (note: the image is an indication only)
class StringBuffer
method StringBuffer(&InitialValue As string, &MaxSize As integer);
method Append(&New As string);
method Reset();
property string Value get set;
property integer Length readonly;
private
instance array of string &Pieces;
instance integer &MaxLength;
end-class;
method StringBuffer
/+ &InitialValue as String, +/
/+ &MaxSize as Integer +/
&Pieces = CreateArray(&InitialValue);
&MaxLength = &MaxSize;
&Length = 0;
end-method;
method Reset
&Pieces = CreateArrayRept("", 0);
&Length = 0;
end-method;
method Append
/+ &New as String +/
Local integer &TempLength = &Length + Len(&New);
If &Length > &MaxLength Then
throw CreateException(210, 44, "Message Not Found", String(&MaxLength));
End-If;
&Length = &TempLength;
&Pieces.Push(&New);
end-method;
get Value
/+ Returns String +/
Local string &Temp = &Pieces.Join("", "", "", &Length);
/* collapse array now */
&Pieces = CreateArrayRept("", 0);
&Pieces.Push(&Temp); /* start out with this combo string */
Return &Temp;
end-get;
set Value
/+ &NewValue as String +/
/* Ditch our current value */
%This.Reset();
&Pieces.Push(&NewValue);
end-set;
The StringBuffer class is a simple (but useful) class which has
- two private instances - a string array (&Pieces) and an integer variable (&MaxLength);
- two properties - a read-write string property (Value) and read-only integer property (Length)
- 2 methods plus constructor method.
The operation inside the class is self explanatory. The Append method can be used to add strings to the end of a string represented by the current StringBuffer. The following example initializes a StringBuffer to "Hello this is my first string!" and then appends some text to the end of the object. The &MaxSize in the constructor must specify a non-negative integer value
Before you can use this class in your PeopleCode program, you must import it into your program, using an import statement. The application package PT_DIAGNOSTICS contains the StringBuffer class. The import statement should be as follows:
import PT_DIAGNOSTICS:*;
Lets see an example;
try
Local PT_DIAGNOSTICS:StringBuffer &MyStringBuffer = create PT_DIAGNOSTICS:StringBuffer("Hello this is my first string!", 1);
&MyStringBuffer.Append(" This is really good.");
catch Exception &c1
WinMessage(&c1.ToString(), 0);
end-try;
/* to get the value of string use &MyStringBuffer.Value */
WinMessage(&MyStringBuffer.Value, 0);
Even though StringBuffer class provides basic functionality to manipulate strings, it comes in handy if you are dealing with files in PeopleCode for example;
While &file.ReadLine(&line) &S.Append(&line); &S.Append(&separator);
