com.avaje.ebean.enhance.agent

Class ClassAdapterEntity

java.lang.Object

com.avaje.ebean.enhance.asm.ClassVisitor

com.avaje.ebean.enhance.agent.ClassAdapterEntity

All Implemented Interfaces:

EnhanceConstants

public class ClassAdapterEntity
extends ClassVisitor
implements EnhanceConstants

ClassAdapter for enhancing entities.

Used for javaagent or ant etc to modify the class with field interception.

This is NOT used for subclass generation.

Field Summary

Fields inherited from class com.avaje.ebean.enhance.asm.ClassVisitor

api, cv

Fields inherited from interface com.avaje.ebean.enhance.agent.EnhanceConstants

AVAJE_TRANSACTIONAL_ANNOTATION, C_BEANCOLLECTION, C_ENHANCEDTRANSACTIONAL, C_ENTITYBEAN, C_GROOVYOBJECT, C_INTERCEPT, C_PERSISTBATCH, C_SCALAOBJECT, C_TXISOLATION, C_TXSCOPE, C_TXTYPE, EBEAN_MODEL, EBEAN_PREFIX, EMBEDDABLE_ANNOTATION, ENTITY_ANNOTATION, IDENTITY_FIELD, INTERCEPT_FIELD, JAVAX_PERSISTENCE, L_EMBEDDEDCOLUMNS, L_HELPSCOPETRANS, L_INTERCEPT, L_SCOPETRANS, MAPPEDSUPERCLASS_ANNOTATION

Constructor Summary

Constructors

Constructor and Description
ClassAdapterEntity(ClassVisitor cv, ClassLoader classLoader, EnhanceContext context)

Method Summary

Modifier and Type	Method and Description
boolean	isLog(int level)
void	log(String msg)
void	logEnhanced() Log that the class has been enhanced.
void	visit(int version, int access, String name, String signature, String superName, String[] interfaces) Create the class definition replacing the className and super class.
AnnotationVisitor	visitAnnotation(String desc, boolean visible) Visits an annotation of the class.
void	visitEnd() Add methods to get and set the entityBeanIntercept.
FieldVisitor	visitField(int access, String name, String desc, String signature, Object value) The ebeanIntercept field is added once but thats all.
MethodVisitor	visitMethod(int access, String name, String desc, String signature, String[] exceptions) Replace the method code with field interception.

Methods inherited from class com.avaje.ebean.enhance.asm.ClassVisitor

visitAttribute, visitInnerClass, visitOuterClass, visitSource, visitTypeAnnotation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClassAdapterEntity

public ClassAdapterEntity(ClassVisitor cv,
                          ClassLoader classLoader,
                          EnhanceContext context)

Method Detail

logEnhanced

public void logEnhanced()

Log that the class has been enhanced.

isLog

public boolean isLog(int level)

log

public void log(String msg)

visit

public void visit(int version,
                  int access,
                  String name,
                  String signature,
                  String superName,
                  String[] interfaces)

Create the class definition replacing the className and super class.

Overrides:

visit in class ClassVisitor

Parameters:

version - the class version.

access - the class's access flags (see Opcodes). This parameter also indicates if the class is deprecated.

name - the internal name of the class (see getInternalName).

signature - the signature of this class. May be null if the class is not a generic one, and does not extend or implement generic classes or interfaces.

superName - the internal of name of the super class (see getInternalName). For interfaces, the super class is Object. May be null, but only for the Object class.

interfaces - the internal names of the class's interfaces (see getInternalName). May be null.

visitAnnotation

public AnnotationVisitor visitAnnotation(String desc,
                                         boolean visible)

Description copied from class: ClassVisitor

Visits an annotation of the class.

Overrides:

visitAnnotation in class ClassVisitor

Parameters:

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitField

public FieldVisitor visitField(int access,
                               String name,
                               String desc,
                               String signature,
                               Object value)

The ebeanIntercept field is added once but thats all. Note the other fields are defined in the superclass.

Overrides:

visitField in class ClassVisitor

Parameters:

access - the field's access flags (see Opcodes). This parameter also indicates if the field is synthetic and/or deprecated.

name - the field's name.

desc - the field's descriptor (see Type).

signature - the field's signature. May be null if the field's type does not use generic types.

value - the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String (for int, float, long or String fields respectively). This parameter is only used for static fields. Its value is ignored for non static fields, which must be initialized through bytecode instructions in constructors or methods.

Returns:

a visitor to visit field annotations and attributes, or null if this class visitor is not interested in visiting these annotations and attributes.

visitMethod

public MethodVisitor visitMethod(int access,
                                 String name,
                                 String desc,
                                 String signature,
                                 String[] exceptions)

Replace the method code with field interception.

Overrides:

visitMethod in class ClassVisitor

Parameters:

access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.

name - the method's name.

desc - the method's descriptor (see Type).

signature - the method's signature. May be null if the method parameters, return type and exceptions do not use generic types.

exceptions - the internal names of the method's exception classes (see getInternalName). May be null.

Returns:

an object to visit the byte code of the method, or null if this class visitor is not interested in visiting the code of this method.

visitEnd

public void visitEnd()

Add methods to get and set the entityBeanIntercept. Also add the writeReplace method to control serialisation.

Overrides:

visitEnd in class ClassVisitor