Java Doc for SerialVersionUIDAdder.java in  » Rule-Engine » drolls-Rule-Engine » org » drools » asm » commons » Java Source Code / Java DocumentationJava Source Code and Java Documentation

 ClassWriter cw = new ClassWriter(...);
 ClassVisitor sv = new SerialVersionUIDAdder(cw);
 ClassVisitor ca = new MyClassAdapter(sv);
 new ClassReader(orginalClass).accept(ca, false);
 

 The serialVersionUID is computed using the signature of a stream of bytes
 that reflect the class definition. The National Institute of Standards and
 Technology (NIST) Secure Hash Algorithm (SHA-1) is used to compute a
 signature for the stream. The first two 32-bit quantities are used to form a
 64-bit hash. A java.lang.DataOutputStream is used to convert primitive data
 types to a sequence of bytes. The values input to the stream are defined by
 the Java Virtual Machine (VM) specification for classes.
 The sequence of items in the stream is as follows:
 1. The class name written using UTF encoding.
 2. The class modifiers written as a 32-bit integer.
 3. The name of each interface sorted by name written using UTF encoding.
 4. For each field of the class sorted by field name (except private static
 and private transient fields):
 1. The name of the field in UTF encoding.
 2. The modifiers of the field written as a 32-bit integer.
 3. The descriptor of the field in UTF encoding
 5. If a class initializer exists, write out the following:
 1. The name of the method, <clinit>, in UTF encoding.
 2. The modifier of the method, java.lang.reflect.Modifier.STATIC,
 written as a 32-bit integer.
 3. The descriptor of the method, ()V, in UTF encoding.
 6. For each non-private constructor sorted by method name and signature:
 1. The name of the method, <init>, in UTF encoding.
 2. The modifiers of the method written as a 32-bit integer.
 3. The descriptor of the method in UTF encoding.
 7. For each non-private method sorted by method name and signature:
 1. The name of the method in UTF encoding.
 2. The modifiers of the method written as a 32-bit integer.
 3. The descriptor of the method in UTF encoding.
 8. The SHA-1 algorithm is executed on the stream of bytes produced by
 DataOutputStream and produces five 32-bit values sha[0..4].
 9. The hash value is assembled from the first and second 32-bit values of 
 the SHA-1 message digest. If the result of the message digest, the five
 32-bit words H0 H1 H2 H3 H4, is in an array of five int values named 
 sha, the hash value would be computed as follows:
 long hash = ((sha[0] >>> 24) & 0xFF) |
 ((sha[0] >>> 16) & 0xFF) << 8 |
 ((sha[0] >>> 8) & 0xFF) << 16 |
 ((sha[0] >>> 0) & 0xFF) << 24 |
 ((sha[1] >>> 24) & 0xFF) << 32 |
 ((sha[1] >>> 16) & 0xFF) << 40 |
 ((sha[1] >>> 8) & 0xFF) << 48 |
 ((sha[1] >>> 0) & 0xFF) << 56;