- Home
- Products
- Integration
- Tutorial
- Barcode FAQ
- Purchase
- Company
c# barcode image generation library {m} {m,} {m,n} \n in Java
{m} {m,} {m,n} \n Data Matrix ECC200 Maker In Java Using Barcode printer for Android Control to generate, create ECC200 image in Android applications. www.OnBarcode.comMaking QR Code In Java Using Barcode creator for Android Control to generate, create QR image in Android applications. www.OnBarcode.comPostfix Postfix Postfix -- Generate PDF417 In Java Using Barcode generator for Android Control to generate, create PDF417 image in Android applications. www.OnBarcode.comEAN / UCC - 13 Creator In Java Using Barcode generator for Android Control to generate, create GTIN - 128 image in Android applications. www.OnBarcode.comRETRIEVAL: FUNCTIONS
Draw Code 3 Of 9 In Java Using Barcode drawer for Android Control to generate, create Code 39 Extended image in Android applications. www.OnBarcode.comCode 128 Code Set C Printer In Java Using Barcode drawer for Android Control to generate, create Code 128 Code Set A image in Android applications. www.OnBarcode.comIf the square brackets notation does not give you enough precision or flexibility, you can use multicharacter collation elements, character classes, and equivalence classes, as follows: Multicharacter collation elements are relevant for certain languages. Valid values are predefined and depend on the NLS_SORT setting. Use [. and .] to enclose collation elements. Character classes give you more flexibility than the dash symbol between square brackets; for example, you can refer to alphabetic characters, numeric digits, alphanumeric characters, blank spaces, punctuation, and so on. Use [: and :] to enclose character classes. Equivalence classes allow you to match all accented and unaccented versions of a letter. Use [= and =] to enclose equivalence classes. Encode GTIN - 13 In Java Using Barcode generator for Android Control to generate, create EAN 13 image in Android applications. www.OnBarcode.comLeitcode Printer In Java Using Barcode drawer for Android Control to generate, create Leitcode image in Android applications. www.OnBarcode.comBefore we look at some examples of how these regular expression operators work with the regular expression functions (in Listings 5-14 through 5-16), we need to discuss the syntax of the functions. Generate DataMatrix In Visual Studio .NET Using Barcode printer for ASP.NET Control to generate, create Data Matrix ECC200 image in ASP.NET applications. www.OnBarcode.comData Matrix ECC200 Drawer In Visual Basic .NET Using Barcode maker for VS .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications. www.OnBarcode.comRegular Expression Function Syntax
DataBar Printer In .NET Framework Using Barcode creation for Visual Studio .NET Control to generate, create GS1 DataBar Limited image in .NET framework applications. www.OnBarcode.comPainting QR-Code In VB.NET Using Barcode generator for .NET framework Control to generate, create QR Code image in .NET applications. www.OnBarcode.comThe four regular expression functions have the following syntax. You can specify regular expressions in their pattern argument. REGEXP_LIKE(text, pattern[, options]) REGEXP_INSTR(text, pattern[, pos[, occurrence[, return[, options]]]]) REGEXP_SUBSTR(text, pattern[, pos[, occurrence[, options]]]) REGEXP_REPLACE(text, pattern[, replace [, pos[, occurrence[, options]]]]) Painting GS1 - 12 In None Using Barcode generation for Online Control to generate, create UPCA image in Online applications. www.OnBarcode.comDenso QR Bar Code Encoder In .NET Framework Using Barcode creation for VS .NET Control to generate, create QR Code ISO/IEC18004 image in .NET applications. www.OnBarcode.comFor all four functions, the first two arguments (text and pattern) are mandatory. These arguments provide the source text and the regular expression to search for, respectively. All of the remaining arguments are optional. However, function arguments can only be omitted from the right to the left. For example, if you want to specify a value for the options argument of the REGEXP_INSTR function, all six arguments are mandatory and must be specified. In REGEXP_INSTR, REGEXP_SUBSTR, and REGEXP_REPLACE, you can use the pos argument to specify from which position in text you want the search to start (the default value is 1), and with occurrence, you can specify how often you want to find the search pattern (the default value is 1). The options argument of all four of the functions and the return argument of the REGEXP_INSTR function require a bit more explanation. PDF 417 Reader In None Using Barcode scanner for Software Control to read, scan read, scan image in Software applications. www.OnBarcode.comBarcode Reader In .NET Using Barcode recognizer for VS .NET Control to read, scan read, scan image in VS .NET applications. www.OnBarcode.comInfluencing Matching Behavior
PDF-417 2d Barcode Maker In None Using Barcode generation for Microsoft Word Control to generate, create PDF417 image in Word applications. www.OnBarcode.comReading Denso QR Bar Code In Visual C# Using Barcode scanner for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications. www.OnBarcode.comYou can influence the matching behavior of the regular expression functions with their options argument. Table 5-5 shows the values you can specify in the options function argument. Draw 2D Barcode In Visual Studio .NET Using Barcode creation for Visual Studio .NET Control to generate, create Matrix image in VS .NET applications. www.OnBarcode.comEAN13 Drawer In .NET Framework Using Barcode creator for VS .NET Control to generate, create European Article Number 13 image in .NET framework applications. www.OnBarcode.comRETRIEVAL: FUNCTIONS
Table 5-5. Regular Expression Option Values
Option
i c n m
Description
Case-insensitive search (no distinction between uppercase and lowercase) Case-sensitive search Allows the period (.) to match the newline character Treat text as multiple lines; ^ and $ refer to the beginning and end of any of those lines You can specify one or more of these values. If you specify conflicting combinations, such as 'ic', the Oracle DBMS uses the last value (c) and ignores the first one. Note The default behavior for case-sensitivity depends on the NLS_SORT parameter value.
REGEXP_INSTR Return Value
The return option of the REGEXP_INSTR function allows you to influence the return value. By default, the position where the pattern was found is returned, but sometimes you want to know the position immediately after the found pattern. Of course, you can add the length of the pattern to the result of the function; however, using the return option is easier in that case. Table 5-6 shows the values you can specify in the return function argument. Table 5-6. Regular Expression Return Values Return
Description
Position of the first character of the pattern found (default) Position of the first character after the pattern found REGEXP_LIKE
Let s look at an example of the REGEXP_LIKE function, using a SQL*Plus trick that will be explained in a later chapter. The ampersand character (&) in the WHERE clause of the query in Listing 5-14 makes SQL*Plus prompt for a value for text; therefore, you can repeat this query in the SQL buffer with the / command as often as you like, specifying different source text values to explore the effect of the search pattern.
|
|