9:59 p.m.
markasllen [https://community.jboss.org/people/markasllen] created the discussion
"insertAfter yields "No such field" error"
To view the discussion, visit: https://community.jboss.org/message/782421#782421
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I have to edit Labels that are being defined inside the constructor of a class.
Because those labels use getters and setters for the text, I decided to redefine them at
the end of the constructor.
public class StaticPraxMMod {
private static final String PRAXFRAME =
"com.praxemu.client.graphics.widgets.PraxFrame";
public static void main(String[] args) throws Exception {
ClassPool classPool = ClassPool.getDefault();
addEVLink(classPool);
}
private static void addEVLink(ClassPool classPool) throws NotFoundException,
CannotCompileException, IOException {
CtClass praxFrameClass = classPool.get(PRAXFRAME);
CtConstructor praxFrameConstructor = praxFrameClass.getConstructors()[0]/*(new
CtClass[] {})*/;
//praxFrameClass.addConstructor(praxFrameConstructor);
praxFrameConstructor.insertAfter("localLabel25 = new
de.matthiasmann.twl.Label(new
StringBuilder().append(paramsuper.õo0000().o00000(null.Ô00000)).append(\"\").toString()
+ \"peanuts\");\n"
"localLabel26 = new de.matthiasmann.twl.Label(new
StringBuilder().append(paramsuper.õo0000().o00000(null.class)).append(\"\").toString()
+ \"peanuts\");\n" +
"localLabel27 = new de.matthiasmann.twl.Label(new
StringBuilder().append(paramsuper.õo0000().o00000(null.õ00000)).append(\"\").toString()
+ \"peanuts\");\n" +
"localLabel28 = new de.matthiasmann.twl.Label(new
StringBuilder().append(paramsuper.õo0000().o00000(null.ÓO0000)).append(\"\").toString()
+ \"peanuts\");\n" +
"localLabel29 = new de.matthiasmann.twl.Label(new
StringBuilder().append(paramsuper.õo0000().o00000(null.interface)).append(\"\").toString()
+ \"peanuts\");\n" +
"localLabel25.setTheme(\"label-value\");\n" +
"localLabel26.setTheme(\"label-value\");\n" +
"localLabel27.setTheme(\"label-value\");\n" +
"localLabel28.setTheme(\"label-value\");\n" +
"localLabel29.setTheme(\"label-value\");");
//praxFrameClass.toBytecode();
praxFrameClass.writeFile(".");
}
}
When running it, I get this :
Exception in thread "main" javassist.CannotCompileException: [source error] no
such field: localLabel25
at javassist.CtBehavior.insertAfter(CtBehavior.java:873)
at javassist.CtBehavior.insertAfter(CtBehavior.java:788)
at StaticPraxMMod.addEVLink(StaticPraxMMod.java:27)
at StaticPraxMMod.main(StaticPraxMMod.java:18)
Caused by: compile error: no such field: localLabel25
at javassist.compiler.TypeChecker.fieldAccess(TypeChecker.java:819)
at javassist.compiler.TypeChecker.atFieldAssign(TypeChecker.java:271)
at javassist.compiler.JvstTypeChecker.atFieldAssign(JvstTypeChecker.java:84)
at javassist.compiler.TypeChecker.atAssignExpr(TypeChecker.java:230)
at javassist.compiler.ast.AssignExpr.accept(AssignExpr.java:39)
at javassist.compiler.CodeGen.doTypeCheck(CodeGen.java:242)
at javassist.compiler.CodeGen.atStmnt(CodeGen.java:330)
at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50)
at javassist.compiler.Javac.compileStmnt(Javac.java:569)
at javassist.CtBehavior.insertAfterAdvice(CtBehavior.java:888)
at javassist.CtBehavior.insertAfter(CtBehavior.java:847)
I tried adding the full package path to labels but it doesn't change a thing.
I had the same issue with Label when I did "de.matthiasmann.twl.Label localLabel25 =
new de.matthiasmann.twl.Label[...]" with and without the full package path.
I would also like to know if injecting something like
localLabel25.setText(localLabel25.getText().append(\" peanuts\"));
would work.
Thanks for your help.
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