Examples with ClassGen org.apache.bcel.generic.ClassGen used on opensource projects

Example 6 with ClassGen

use of org.apache.bcel.generic.ClassGen in project qpid-broker-j by apache.

the class LDAPSSLSocketFactoryGenerator method createSubClassByteCode.

/**
 * Creates the LDAPSocketFactoryImpl class (subclass of {@link AbstractLDAPSSLSocketFactory}.
 * A static method #getDefaulta, a static field _sslContent and no-arg constructor are added
 * to the class.
 *
 * @param className
 *
 * @return byte code
 */
private static byte[] createSubClassByteCode(final String className) {
    ClassGen classGen = new ClassGen(className, AbstractLDAPSSLSocketFactory.class.getName(), "<generated>", ACC_PUBLIC | ACC_SUPER, null);
    ConstantPoolGen constantPoolGen = classGen.getConstantPool();
    InstructionFactory factory = new InstructionFactory(classGen);
    createSslContextStaticField(classGen, constantPoolGen);
    createGetDefaultStaticMethod(classGen, constantPoolGen, factory);
    classGen.addEmptyConstructor(ACC_PROTECTED);
    JavaClass javaClass = classGen.getJavaClass();
    ByteArrayOutputStream out = null;
    try {
        out = new ByteArrayOutputStream();
        javaClass.dump(out);
        return out.toByteArray();
    } catch (IOException ioex) {
        throw new IllegalStateException("Could not write to a ByteArrayOutputStream - should not happen", ioex);
    } finally {
        closeSafely(out);
    }
}