org.jpox.enhancer
Class EnhanceUtil

java.lang.Object
  org.jpox.enhancer.EnhanceUtil

public final class EnhanceUtil
extends java.lang.Object

Enhancer utility class

Version:

$Revision: 1.18 $

Field Summary

protected static org.jpox.util.Localiser

LOCALISER Localiser for messages.

Method Summary

static void	addSynthetic(org.apache.bcel.classfile.FieldOrMethod m, org.apache.bcel.generic.ConstantPoolGen constantPoolGen) add synthetic attribute
static java.lang.Class	classForName(java.lang.String className) replace Class.forName().
static org.apache.bcel.classfile.Method	findMethod(org.apache.bcel.generic.ClassGen targetClasGen, java.lang.String name, java.lang.String signature) find method
static java.lang.String	firstUpper(java.lang.String s) convert string to first upper string.
static java.lang.String	getBcelType2JavaTypeString(org.apache.bcel.generic.Type t)
static org.apache.bcel.generic.Instruction	getBIPUSH(int i) return perfect for instruction of type for const int push operand.
static org.apache.bcel.generic.ClassGen	getClassByFieldByName(java.lang.String fieldName, org.apache.bcel.generic.ClassGen classGen) find Field object by name
static org.apache.bcel.generic.ClassGen	getClassByFieldByName(java.lang.String fieldName, org.apache.bcel.classfile.JavaClass classGen) find Field object by name
static org.apache.bcel.classfile.Field	getFieldByName(java.lang.String fieldName, org.apache.bcel.generic.ClassGen classGen) find Field object by name
static org.apache.bcel.classfile.Field	getFieldByName(java.lang.String fieldName, org.apache.bcel.classfile.JavaClass classGen) find Field object by name
static java.lang.String	getGetterName(org.apache.bcel.classfile.Field f) create getter name from Field
static java.lang.String	getJDOMethodName(org.apache.bcel.classfile.Field f)
static java.lang.String	getJDOMethodName(org.apache.bcel.generic.Type t) return JDO method type name by type.
static org.apache.bcel.generic.Type	getJDOMethodType(org.apache.bcel.generic.Type t) Return JDO method BCEL's type from BCEL's field type.
static org.apache.bcel.generic.ObjectType	getPrimitiveWrapperType(org.apache.bcel.generic.BasicType bt) return primitive wraper type.
static java.lang.String	getSetterName(org.apache.bcel.classfile.Field f) create setter name from Field
static boolean	isInstanceof(org.apache.bcel.classfile.JavaClass targetClass, java.lang.Class interfaceClass) Same result targetClass.newInstance instanceof interfaceClass
static boolean	isSynthetic(org.apache.bcel.classfile.FieldOrMethod m) Check methos or field is synthetic.

Methods inherited from class java.lang.Object

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

Field Detail

LOCALISER

protected static org.jpox.util.Localiser LOCALISER

Localiser for messages.

Method Detail

firstUpper

public static java.lang.String firstUpper(java.lang.String s)

convert string to first upper string. test -> Test

Parameters:

s - original string

Returns:

first upper string

getSetterName

public static java.lang.String getSetterName(org.apache.bcel.classfile.Field f)

create setter name from Field

Parameters:

f - field

Returns:

setter name

getGetterName

public static java.lang.String getGetterName(org.apache.bcel.classfile.Field f)

create getter name from Field

Parameters:

f - field

Returns:

getter name

findMethod

public static org.apache.bcel.classfile.Method findMethod(org.apache.bcel.generic.ClassGen targetClasGen,
                                                          java.lang.String name,
                                                          java.lang.String signature)

find method

Parameters:

targetClasGen - target class

name - method name

signature - method signature

Returns:

target method. return null if method not found.

getJDOMethodType

public static org.apache.bcel.generic.Type getJDOMethodType(org.apache.bcel.generic.Type t)

Return JDO method BCEL's type from BCEL's field type.

Original Type	Return Type
Type.BOOLEAN	Type.BOOLEAN
Type.BYTE	Type.BYTE
Type.CHAR	Type.CHAR
Type.DOUBLE	Type.DOUBLE
Type.FLOAT	Type.FLOAT
Type.INT	Type.INT
Type.LONG	Type.LONG
Type.SHORT	Type.SHORT
Type.STRING	Type.STRING
[OTHER]	Type.OBJECT

Parameters:

t - original type

Returns:

method type

getJDOMethodName

public static java.lang.String getJDOMethodName(org.apache.bcel.classfile.Field f)

getJDOMethodName

public static java.lang.String getJDOMethodName(org.apache.bcel.generic.Type t)

return JDO method type name by type.

Original Type	Return String
Type.BOOLEAN	Boolean
Type.BYTE	Byte
Type.CHAR	Char
Type.DOUBLE	Double
Type.FLOAT	Float
Type.INT	Int
Type.LONG	Long
Type.SHORT	Short
Type.STRING	String
[OTHER]	Object

Parameters:

t - original type

Returns:

method type name

getBIPUSH

public static org.apache.bcel.generic.Instruction getBIPUSH(int i)

return perfect for instruction of type for const int push operand.

Parameters:

i - push num

Returns:

push instruction

getPrimitiveWrapperType

public static org.apache.bcel.generic.ObjectType getPrimitiveWrapperType(org.apache.bcel.generic.BasicType bt)

return primitive wraper type.

Parameters:

bt - original type

Returns:

wrapper type

getBcelType2JavaTypeString

public static java.lang.String getBcelType2JavaTypeString(org.apache.bcel.generic.Type t)

getFieldByName

public static org.apache.bcel.classfile.Field getFieldByName(java.lang.String fieldName,
                                                             org.apache.bcel.generic.ClassGen classGen)

find Field object by name

Parameters:

fieldName - field name

classGen - class gen

Returns:

field object. return null if field not found.

getFieldByName

public static org.apache.bcel.classfile.Field getFieldByName(java.lang.String fieldName,
                                                             org.apache.bcel.classfile.JavaClass classGen)

find Field object by name

Parameters:

fieldName - field name

classGen - class gen

Returns:

field object. return null if field not found.

getClassByFieldByName

public static org.apache.bcel.generic.ClassGen getClassByFieldByName(java.lang.String fieldName,
                                                                     org.apache.bcel.generic.ClassGen classGen)

find Field object by name

Parameters:

fieldName - field name

classGen - class gen

Returns:

field object. return null if field not found.

getClassByFieldByName

public static org.apache.bcel.generic.ClassGen getClassByFieldByName(java.lang.String fieldName,
                                                                     org.apache.bcel.classfile.JavaClass classGen)

find Field object by name

Parameters:

fieldName - field name

classGen - class gen

Returns:

field object. return null if field not found.

addSynthetic

public static void addSynthetic(org.apache.bcel.classfile.FieldOrMethod m,
                                org.apache.bcel.generic.ConstantPoolGen constantPoolGen)

add synthetic attribute

Parameters:

m - method or field

constantPoolGen - target ConstantPoolGen instance

isSynthetic

public static boolean isSynthetic(org.apache.bcel.classfile.FieldOrMethod m)

Check methos or field is synthetic.

Parameters:

m - field or method

Returns:

Return true if method or field is synthetic.

classForName

public static java.lang.Class classForName(java.lang.String className)
                                    throws java.lang.ClassNotFoundException

replace Class.forName(). int, boolean, java.lang.String,[Ljava.lang.String;, java.util.Map$Entry

Parameters:

className -

Returns:

java.lang.Class object

Throws:

java.lang.ClassNotFoundException

isInstanceof

public static boolean isInstanceof(org.apache.bcel.classfile.JavaClass targetClass,
                                   java.lang.Class interfaceClass)
                            throws java.lang.ClassNotFoundException

Same result targetClass.newInstance instanceof interfaceClass

Parameters:

targetClass - Target class instance

interfaceClass - Check class instance

Returns:

return true if targetInstance.newInstance() instanceof interfaseClass.

Throws:

java.lang.ClassNotFoundException