- Home
- Products
- Integration
- Tutorial
- Barcode FAQ
- Purchase
- Company
java qr code generator Pointcuts in Java
Pointcuts Generating QR Code In Java Using Barcode creator for Java Control to generate, create QR Code image in Java applications. www.OnBarcode.comReading QR-Code In Java Using Barcode scanner for Java Control to read, scan read, scan image in Java applications. www.OnBarcode.comTable 3.3 Examples of method signatures (continued) Signature Pattern public void Account.set*(*) public void Account.*() public * Account.*() public * Account.*(..) * Account.*(..) !public * Account.*(..) Matched Methods All public methods in the Account class with a name starting with set and taking a single argument of any type. All public methods in the Account class that return void and take no arguments. All public methods in the Account class that take no arguments and return any type. All public methods in the Account class taking any number and type of arguments. All methods in the Account class. This will even match methods with private access. All methods with nonpublic access in the Account class. This will match the methods with private, default, and protected access. The static main() method of a Test class with public access. All methods in the Account class or its subclasses. This will match any new method introduced in Account s subclasses. Any read() method in the Reader class irrespective of type and number of arguments to the method. In this case, it will match read(), read(char[]), and read(char[], int, int). Any read() method in the Reader class irrespective of type and number of arguments to the method as long as the first argument type is char[]. In this case, it will match read(char[]) and read(char[], int, int), but not read(). Any method whose name starts with add and ends in Listener in the javax package or any of the direct and indirect subpackages that take one argument of type EventListener or its subtype. For example, it will match TableModel.addTableModelListener(TableModelListener). Any method that declares it can throw RemoteException. Making European Article Number 13 In Java Using Barcode encoder for Java Control to generate, create EAN13 image in Java applications. www.OnBarcode.comCode 39 Full ASCII Printer In Java Using Barcode generation for Java Control to generate, create Code 3/9 image in Java applications. www.OnBarcode.compublic static void Test.main(String[] args) * Account+.*(..) Print EAN / UCC - 14 In Java Using Barcode printer for Java Control to generate, create GS1-128 image in Java applications. www.OnBarcode.comMaking QR Code JIS X 0510 In Java Using Barcode generation for Java Control to generate, create QR Code JIS X 0510 image in Java applications. www.OnBarcode.com* java.io.Reader.read(..) PDF 417 Generation In Java Using Barcode maker for Java Control to generate, create PDF-417 2d barcode image in Java applications. www.OnBarcode.comEncode UPC-E In Java Using Barcode generation for Java Control to generate, create UPC - E0 image in Java applications. www.OnBarcode.com* java.io.Reader.read(char[],..) QR Code ISO/IEC18004 Reader In Visual Basic .NET Using Barcode scanner for VS .NET Control to read, scan read, scan image in VS .NET applications. www.OnBarcode.comMake QR Code JIS X 0510 In VS .NET Using Barcode creator for Visual Studio .NET Control to generate, create QR Code ISO/IEC18004 image in .NET framework applications. www.OnBarcode.com* javax..*.add*Listener(EventListener+) Paint Linear In VS .NET Using Barcode printer for .NET Control to generate, create 1D image in Visual Studio .NET applications. www.OnBarcode.comEAN128 Decoder In Visual C# Using Barcode scanner for .NET framework Control to read, scan read, scan image in .NET framework applications. www.OnBarcode.com* *.*(..) throws RemoteException
Creating Barcode In Objective-C Using Barcode encoder for iPad Control to generate, create Barcode image in iPad applications. www.OnBarcode.comGenerate Barcode In VS .NET Using Barcode printer for .NET framework Control to generate, create Barcode image in Visual Studio .NET applications. www.OnBarcode.comA constructor signature is similar to a method signature, except for two differences. First, because constructors do not have a return value, there is no return value specification required or allowed. Second, because constructors do not USS-128 Generation In None Using Barcode encoder for Online Control to generate, create GTIN - 128 image in Online applications. www.OnBarcode.comGenerating Barcode In Objective-C Using Barcode maker for iPhone Control to generate, create Barcode image in iPhone applications. www.OnBarcode.comAspectJ: syntax basics
EAN 13 Encoder In Visual C#.NET Using Barcode creator for .NET Control to generate, create EAN 13 image in .NET applications. www.OnBarcode.comCode 3/9 Recognizer In Visual C#.NET Using Barcode reader for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications. www.OnBarcode.comhave names as regular methods do, new is substituted for the method name in a signature. Let s consider a few examples of constructor signatures in table 3.4. PDF417 Creation In Java Using Barcode generator for Android Control to generate, create PDF417 image in Android applications. www.OnBarcode.comCode 128A Printer In Visual Basic .NET Using Barcode maker for .NET Control to generate, create Code 128 Code Set A image in Visual Studio .NET applications. www.OnBarcode.comTable 3.4 Examples of constructor signatures Signature Pattern public Account.new() public Account.new(int) public Account.new(..) public Account+.new(..) public *Account.new(..) Matched Constructors A public constructor of the Account class taking no arguments. A public constructor of the Account class taking a single integer argument. All public constructors of the Account class taking any number and type of arguments. Any public constructor of the Account class or its subclasses. Any public constructor of classes with names ending with Account. This will match all the public constructors of the SavingsAccount and CheckingAccount classes. Any public constructors of the Account class that declare they can throw InvalidAccountNumberException. public Account.new(..) throws InvalidAccountNumberException
Field signature patterns Much like the method signature, the field signature allows you to designate a member field. You can then use the field signatures to capture join points corresponding to read or write access to the specified fields. A field signature must specify the field s type, the declaring type, and the modifiers. Just as in method and constructor signatures, you can use type signature patterns to specify the types. For example, this designates a public integer field x in the Rectangle class: public int java.awt.Rectangle.x
Let s dive straight into a few examples in table 3.5.
Table 3.5 Examples of field signatures Signature Pattern private float Account._balance * Account.* Matched Fields Private field _balance of the Account class All fields of the Account class regardless of an access modifier, type, or name Pointcuts
Table 3.5 Examples of field signatures (continued) Signature Pattern !public static * banking..*.* public !final *.* Matched Fields All nonpublic static fields of banking and its direct and indirect subpackages Nonfinal public fields of any class Now that you understand the syntax of the signatures, let s see how to put them together into pointcuts. 3.1.3 Implementing pointcuts Let s recap: Pointcuts are program constructs that capture a set of exposed join points by matching certain characteristics. Although a pointcut can specify a single join point in a system, the power of pointcuts comes from the economical way they match a set of join points. There are two ways that pointcut designators match join points in AspectJ. The first way captures join points based on the category to which they belong. Recall from the discussion in section 2.4.1 that join points can be grouped into categories that represent the kind of join points they are, such as method call join points, method execution join points, field get join points, exception handler join points, and so forth. The pointcuts that map directly to these categories or kinds of exposed join points are referred as kinded pointcuts. The second way that pointcut designators match join points is when they are used to capture join points based on matching the circumstances under which they occur, such as control flow, lexical scope, and conditional checks. These pointcuts capture join points in any category as long as they match the prescribed condition. Some of the pointcuts of this type also allow the collection of context at the captured join points. Let s take a more in-depth look at each of these types of pointcuts. Kinded pointcuts Kinded pointcuts follow a specific syntax to capture each kind of exposed join point in AspectJ. Once you understand the categories of exposed join points, as discussed in section 2.4.1, you will find that understanding kinded pointcuts is simple all you need is their syntax. Table 3.6 shows the syntax for each of the kinded pointcuts. When you understand the pointcut syntax in table 3.6 and the signature syntax as described in section 3.1.2, you will be able to write kinded pointcuts that
|
|