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Example 6 with COMPUTE_FRAMES

use of org.apache.xbean.asm6.ClassWriter.COMPUTE_FRAMES in project component-runtime by Talend.

the class PluginGenerator method createProcessor.

private byte[] createProcessor(final JarOutputStream outputStream, final String packageName) throws IOException {
    final String className = packageName + "/AProcessor.class";
    outputStream.putNextEntry(new ZipEntry(className));
    final ClassWriter writer = new ClassWriter(COMPUTE_FRAMES);
    final AnnotationVisitor processorAnnotation = writer.visitAnnotation(Type.getDescriptor(Processor.class), true);
    processorAnnotation.visit("family", "comp");
    processorAnnotation.visit("name", "proc");
    processorAnnotation.visitEnd();
    writer.visit(V1_8, ACC_PUBLIC + ACC_SUPER, className.substring(0, className.length() - ".class".length()), null, Type.getInternalName(Object.class), new String[] { Serializable.class.getName().replace(".", "/") });
    writer.visitSource(className.replace(".class", ".java"), null);
    addConstructor(writer);
    // generate a processor
    final MethodVisitor emitMethod = writer.visitMethod(ACC_PUBLIC, "emit", "(L" + packageName + "/AModel;)L" + packageName + "/AModel;", null, new String[0]);
    emitMethod.visitAnnotation(Type.getDescriptor(ElementListener.class), true).visitEnd();
    emitMethod.visitCode();
    emitMethod.visitTypeInsn(NEW, packageName + "/AModel");
    emitMethod.visitInsn(DUP);
    emitMethod.visitMethodInsn(INVOKESPECIAL, packageName + "/AModel", "<init>", "()V", false);
    emitMethod.visitInsn(ARETURN);
    emitMethod.visitInsn(ARETURN);
    emitMethod.visitMaxs(1, 1);
    emitMethod.visitEnd();
    writer.visitEnd();
    return writer.toByteArray();
}
Also used : Processor(org.talend.sdk.component.api.processor.Processor) ZipEntry(java.util.zip.ZipEntry) AnnotationVisitor(org.apache.xbean.asm6.AnnotationVisitor) ClassWriter(org.apache.xbean.asm6.ClassWriter) MethodVisitor(org.apache.xbean.asm6.MethodVisitor)

Aggregations

ClassWriter (org.apache.xbean.asm6.ClassWriter)6 ZipEntry (java.util.zip.ZipEntry)4 File (java.io.File)3 FileInputStream (java.io.FileInputStream)3 FileOutputStream (java.io.FileOutputStream)3 IOException (java.io.IOException)3 InputStream (java.io.InputStream)3 Optional.ofNullable (java.util.Optional.ofNullable)3 JarEntry (java.util.jar.JarEntry)3 JarOutputStream (java.util.jar.JarOutputStream)3 Stream (java.util.stream.Stream)3 AnnotationVisitor (org.apache.xbean.asm6.AnnotationVisitor)3 ClassReader (org.apache.xbean.asm6.ClassReader)3 EXPAND_FRAMES (org.apache.xbean.asm6.ClassReader.EXPAND_FRAMES)3 COMPUTE_FRAMES (org.apache.xbean.asm6.ClassWriter.COMPUTE_FRAMES)3 MethodVisitor (org.apache.xbean.asm6.MethodVisitor)3 ClassRemapper (org.apache.xbean.asm6.commons.ClassRemapper)3 Remapper (org.apache.xbean.asm6.commons.Remapper)3 JarLocation.jarLocation (org.apache.ziplock.JarLocation.jarLocation)3 Assertions.fail (org.junit.jupiter.api.Assertions.fail)3