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package com.sun.xml.bind.v2.runtime.reflect.opt;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.xml.bind.Util;
import com.sun.xml.bind.v2.model.core.TypeInfo;
import com.sun.xml.bind.v2.model.runtime.RuntimeClassInfo;
import com.sun.xml.bind.v2.model.runtime.RuntimePropertyInfo;
import com.sun.xml.bind.v2.runtime.reflect.Accessor;
import com.sun.xml.bind.v2.runtime.reflect.TransducedAccessor;
import static com.sun.xml.bind.v2.bytecode.ClassTailor.toVMClassName;
/**
* Prepares optimized {@link TransducedAccessor} from templates.
*
* @author Kohsuke Kawaguchi
*/
public abstract class OptimizedTransducedAccessorFactory {
private OptimizedTransducedAccessorFactory() {} // no instanciation please
// http://java.sun.com/docs/books/vmspec/2nd-edition/html/ConstantPool.doc.html#75929
// "same runtime package"
private static final Logger logger = Util.getClassLogger();
private static final String fieldTemplateName;
private static final String methodTemplateName;
static {
String s = TransducedAccessor_field_Byte.class.getName();
fieldTemplateName = s.substring(0,s.length()-"Byte".length()).replace('.','/');
s = TransducedAccessor_method_Byte.class.getName();
methodTemplateName = s.substring(0,s.length()-"Byte".length()).replace('.','/');
}
/**
* Gets the optimizd {@link TransducedAccessor} if possible.
*
* @return null
* if for some reason it fails to create an optimized version.
*/
public static final TransducedAccessor get(RuntimePropertyInfo prop) {
Accessor acc = prop.getAccessor();
// consider using an optimized TransducedAccessor implementations.
Class opt=null;
TypeInfo parent = prop.parent();
if(!(parent instanceof RuntimeClassInfo))
return null;
Class dc = ((RuntimeClassInfo)parent).getClazz();
String newClassName = toVMClassName(dc)+"_JaxbXducedAccessor_"+prop.getName();
if(acc instanceof Accessor.FieldReflection) {
// TODO: we also need to make sure that the default xducer is used.
Accessor.FieldReflection racc = (Accessor.FieldReflection) acc;
Field field = racc.f;
int mods = field.getModifiers();
if(Modifier.isPrivate(mods) || Modifier.isFinal(mods))
// we can't access private fields.
// TODO: think about how to improve this case
return null;
Class t = field.getType();
if(t.isPrimitive())
opt = AccessorInjector.prepare( dc,
fieldTemplateName+suffixMap.get(t),
newClassName,
toVMClassName(Bean.class),
toVMClassName(dc),
"f_"+t.getName(),
field.getName() );
}
if(acc.getClass()==Accessor.GetterSetterReflection.class) {
Accessor.GetterSetterReflection gacc = (Accessor.GetterSetterReflection) acc;
if(gacc.getter==null || gacc.setter==null)
return null; // incomplete
Class t = gacc.getter.getReturnType();
if(Modifier.isPrivate(gacc.getter.getModifiers())
|| Modifier.isPrivate(gacc.setter.getModifiers()))
// we can't access private methods.
return null;
if(t.isPrimitive())
opt = AccessorInjector.prepare( dc,
methodTemplateName+suffixMap.get(t),
newClassName,
toVMClassName(Bean.class),
toVMClassName(dc),
"get_"+t.getName(),
gacc.getter.getName(),
"set_"+t.getName(),
gacc.setter.getName());
}
if(opt==null)
return null;
logger.log(Level.FINE,"Using optimized TransducedAccessor for "+prop.displayName());
try {
return (TransducedAccessor)opt.newInstance();
} catch (InstantiationException e) {
logger.log(Level.INFO,"failed to load an optimized TransducedAccessor",e);
} catch (IllegalAccessException e) {
logger.log(Level.INFO,"failed to load an optimized TransducedAccessor",e);
} catch (SecurityException e) {
logger.log(Level.INFO,"failed to load an optimized TransducedAccessor",e);
}
return null;
}
private static final Map suffixMap = new HashMap();
static {
suffixMap.put(Byte.TYPE,"Byte");
suffixMap.put(Short.TYPE,"Short");
suffixMap.put(Integer.TYPE,"Integer");
suffixMap.put(Long.TYPE,"Long");
suffixMap.put(Boolean.TYPE,"Boolean");
suffixMap.put(Float.TYPE,"Float");
suffixMap.put(Double.TYPE,"Double");
}
}
