Mercurial > jdk8-mips64-public > jaxws / file revision

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  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 package com.sun.xml.internal.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.internal.bind.Util;

 import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor;

 import com.sun.xml.internal.bind.v2.runtime.RuntimeUtil;

 import static com.sun.xml.internal.bind.v2.bytecode.ClassTailor.toVMClassName;

 import static com.sun.xml.internal.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 <B,V> Accessor<B,V> 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<B,V> acc = instanciate(opt);

         if (acc!=null) {

             if (logger.isLoggable(Level.FINE)) {

                 logger.log(Level.FINE, "Using optimized Accessor for {0} and {1}", new Object[]{getter, setter});

             }

         }

         return acc;

     }

     /**

      * Gets the optimized {@link Accessor} that accesses the given field.

      *

      * @return null

      *      if for some reason it fails to create an optimized version.

      */

     public static final <B,V> Accessor<B,V> 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<B,V> acc = instanciate(opt);

         if (acc!=null) {

             if (logger.isLoggable(Level.FINE)) {

                 logger.log(Level.FINE, "Using optimized Accessor for {0}", field);

             }

         }

         return acc;

     }

     private static <B,V> Accessor<B,V> instanciate(Class opt) {

         try {

             return (Accessor<B,V>)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;

     }

 }