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package com.sun.xml.bind.v2.runtime.reflect.opt;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.xml.bind.Util;
import com.sun.xml.bind.v2.runtime.reflect.Accessor;
import com.sun.xml.bind.v2.runtime.RuntimeUtil;
import static com.sun.xml.bind.v2.bytecode.ClassTailor.toVMClassName;
import static com.sun.xml.bind.v2.bytecode.ClassTailor.toVMTypeName;
/**
* @author Kohsuke Kawaguchi
*/
public abstract class OptimizedAccessorFactory {
private OptimizedAccessorFactory() {} // no instanciation please
private static final Logger logger = Util.getClassLogger();
private static final String fieldTemplateName;
private static final String methodTemplateName;
static {
String s = FieldAccessor_Byte.class.getName();
fieldTemplateName = s.substring(0,s.length()-"Byte".length()).replace('.','/');
s = MethodAccessor_Byte.class.getName();
methodTemplateName = s.substring(0,s.length()-"Byte".length()).replace('.','/');
}
/**
* Gets the optimized {@link Accessor} that accesses the given getter/setter.
*
* @return null
* if for some reason it fails to create an optimized version.
*/
public static final Accessor get(Method getter, Method setter) {
// make sure the method signatures are what we expect
if(getter.getParameterTypes().length!=0)
return null;
Class[] sparams = setter.getParameterTypes();
if(sparams.length!=1)
return null;
if(sparams[0]!=getter.getReturnType())
return null;
if(setter.getReturnType()!=Void.TYPE)
return null;
if(getter.getDeclaringClass()!=setter.getDeclaringClass())
return null;
if(Modifier.isPrivate(getter.getModifiers()) || Modifier.isPrivate(setter.getModifiers()))
// we can't access private fields
return null;
Class t = sparams[0];
String typeName = t.getName().replace('.','_');
if (t.isArray()) {
typeName = "AOf_";
String compName = t.getComponentType().getName().replace('.','_');
while (compName.startsWith("[L")) {
compName = compName.substring(2);
typeName += "AOf_";
}
typeName = typeName + compName;
}
String newClassName = toVMClassName(getter.getDeclaringClass())+"$JaxbAccessorM_"+getter.getName()+'_'+setter.getName()+'_'+typeName;
Class opt;
if(t.isPrimitive())
opt = AccessorInjector.prepare( getter.getDeclaringClass(),
methodTemplateName+RuntimeUtil.primitiveToBox.get(t).getSimpleName(),
newClassName,
toVMClassName(Bean.class),
toVMClassName(getter.getDeclaringClass()),
"get_"+t.getName(),
getter.getName(),
"set_"+t.getName(),
setter.getName());
else
opt = AccessorInjector.prepare( getter.getDeclaringClass(),
methodTemplateName+"Ref",
newClassName,
toVMClassName(Bean.class),
toVMClassName(getter.getDeclaringClass()),
toVMClassName(Ref.class),
toVMClassName(t),
"()"+toVMTypeName(Ref.class),
"()"+toVMTypeName(t),
'('+toVMTypeName(Ref.class)+")V",
'('+toVMTypeName(t)+")V",
"get_ref",
getter.getName(),
"set_ref",
setter.getName());
if(opt==null)
return null;
Accessor acc = instanciate(opt);
if(acc!=null)
logger.log(Level.FINE,"Using optimized Accessor for "+getter+" and "+setter);
return acc;
}
/**
* Gets the optimizd {@link Accessor} that accesses the given field.
*
* @return null
* if for some reason it fails to create an optimized version.
*/
public static final Accessor get(Field field) {
int mods = field.getModifiers();
if(Modifier.isPrivate(mods) || Modifier.isFinal(mods))
// we can't access private fields
return null;
String newClassName = toVMClassName(field.getDeclaringClass())+"$JaxbAccessorF_"+field.getName();
Class opt;
if(field.getType().isPrimitive())
opt = AccessorInjector.prepare( field.getDeclaringClass(),
fieldTemplateName+RuntimeUtil.primitiveToBox.get(field.getType()).getSimpleName(),
newClassName,
toVMClassName(Bean.class),
toVMClassName(field.getDeclaringClass()),
"f_"+field.getType().getName(),
field.getName() );
else
opt = AccessorInjector.prepare( field.getDeclaringClass(),
fieldTemplateName+"Ref",
newClassName,
toVMClassName(Bean.class),
toVMClassName(field.getDeclaringClass()),
toVMClassName(Ref.class),
toVMClassName(field.getType()),
toVMTypeName(Ref.class),
toVMTypeName(field.getType()),
"f_ref",
field.getName() );
if(opt==null)
return null;
Accessor acc = instanciate(opt);
if(acc!=null)
logger.log(Level.FINE,"Using optimized Accessor for "+field);
return acc;
}
private static Accessor instanciate(Class opt) {
try {
return (Accessor)opt.newInstance();
} catch (InstantiationException e) {
logger.log(Level.INFO,"failed to load an optimized Accessor",e);
} catch (IllegalAccessException e) {
logger.log(Level.INFO,"failed to load an optimized Accessor",e);
} catch (SecurityException e) {
logger.log(Level.INFO,"failed to load an optimized Accessor",e);
}
return null;
}
}
