aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.xml.internal.bind.v2.runtime.property;
aoqi@0: 
aoqi@0: import java.lang.reflect.Constructor;
aoqi@0: import java.lang.reflect.InvocationTargetException;
aoqi@0: import java.util.Collection;
aoqi@0: 
aoqi@0: import com.sun.xml.internal.bind.v2.model.core.ID;
aoqi@0: import com.sun.xml.internal.bind.v2.model.core.PropertyKind;
aoqi@0: import com.sun.xml.internal.bind.v2.model.runtime.RuntimeAttributePropertyInfo;
aoqi@0: import com.sun.xml.internal.bind.v2.model.runtime.RuntimeElementPropertyInfo;
aoqi@0: import com.sun.xml.internal.bind.v2.model.runtime.RuntimeNonElement;
aoqi@0: import com.sun.xml.internal.bind.v2.model.runtime.RuntimePropertyInfo;
aoqi@0: import com.sun.xml.internal.bind.v2.model.runtime.RuntimeTypeInfo;
aoqi@0: import com.sun.xml.internal.bind.v2.model.runtime.RuntimeValuePropertyInfo;
aoqi@0: import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Create {@link Property} objects.
aoqi@0:  *
aoqi@0:  * @author Kohsuke Kawaguchi (kk@kohsuke.org)
aoqi@0:  */
aoqi@0: public abstract class PropertyFactory {
aoqi@0:     private PropertyFactory() {}
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Constructors of the {@link Property} implementation.
aoqi@0:      */
aoqi@0:     private static final Constructor<? extends Property>[] propImpls;
aoqi@0: 
aoqi@0:     static {
aoqi@0:         Class<? extends Property>[] implClasses = new Class[] {
aoqi@0:             SingleElementLeafProperty.class,
aoqi@0:             null, // single reference leaf --- but there's no such thing as "reference leaf"
aoqi@0:             null, // no such thing as "map leaf"
aoqi@0: 
aoqi@0:             ArrayElementLeafProperty.class,
aoqi@0:             null, // array reference leaf --- but there's no such thing as "reference leaf"
aoqi@0:             null, // no such thing as "map leaf"
aoqi@0: 
aoqi@0:             SingleElementNodeProperty.class,
aoqi@0:             SingleReferenceNodeProperty.class,
aoqi@0:             SingleMapNodeProperty.class,
aoqi@0: 
aoqi@0:             ArrayElementNodeProperty.class,
aoqi@0:             ArrayReferenceNodeProperty.class,
aoqi@0:             null, // map is always a single property (Map doesn't implement Collection)
aoqi@0:         };
aoqi@0: 
aoqi@0:         propImpls = new Constructor[implClasses.length];
aoqi@0:         for( int i=0; i<propImpls.length; i++ ) {
aoqi@0:             if(implClasses[i]!=null)
aoqi@0:                 // this pointless casting necessary for Mustang
aoqi@0:                 propImpls[i] = (Constructor)implClasses[i].getConstructors()[0];
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Creates/obtains a properly configured {@link Property}
aoqi@0:      * object from the given description.
aoqi@0:      */
aoqi@0:     public static Property create( JAXBContextImpl grammar, RuntimePropertyInfo info ) {
aoqi@0: 
aoqi@0:         PropertyKind kind = info.kind();
aoqi@0: 
aoqi@0:         switch(kind) {
aoqi@0:         case ATTRIBUTE:
aoqi@0:             return new AttributeProperty(grammar,(RuntimeAttributePropertyInfo)info);
aoqi@0:         case VALUE:
aoqi@0:             return new ValueProperty(grammar,(RuntimeValuePropertyInfo)info);
aoqi@0:         case ELEMENT:
aoqi@0:             if(((RuntimeElementPropertyInfo)info).isValueList())
aoqi@0:                 return new ListElementProperty(grammar,(RuntimeElementPropertyInfo) info);
aoqi@0:             break;
aoqi@0:         case REFERENCE:
aoqi@0:         case MAP:
aoqi@0:             break;
aoqi@0:         default:
aoqi@0:             assert false;
aoqi@0:         }
aoqi@0: 
aoqi@0: 
aoqi@0:         boolean isCollection = info.isCollection();
aoqi@0:         boolean isLeaf = isLeaf(info);
aoqi@0: 
aoqi@0:         Constructor<? extends Property> c = propImpls[(isLeaf?0:6)+(isCollection?3:0)+kind.propertyIndex];
aoqi@0:         try {
aoqi@0:             return c.newInstance( grammar, info );
aoqi@0:         } catch (InstantiationException e) {
aoqi@0:             throw new InstantiationError(e.getMessage());
aoqi@0:         } catch (IllegalAccessException e) {
aoqi@0:             throw new IllegalAccessError(e.getMessage());
aoqi@0:         } catch (InvocationTargetException e) {
aoqi@0:             Throwable t = e.getCause();
aoqi@0:             if(t instanceof Error)
aoqi@0:                 throw (Error)t;
aoqi@0:             if(t instanceof RuntimeException)
aoqi@0:                 throw (RuntimeException)t;
aoqi@0: 
aoqi@0:             throw new AssertionError(t);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Look for the case that can be optimized as a leaf,
aoqi@0:      * which is a kind of type whose XML representation is just PCDATA.
aoqi@0:      */
aoqi@0:     static boolean isLeaf(RuntimePropertyInfo info) {
aoqi@0:         Collection<? extends RuntimeTypeInfo> types = info.ref();
aoqi@0:         if(types.size()!=1)     return false;
aoqi@0: 
aoqi@0:         RuntimeTypeInfo rti = types.iterator().next();
aoqi@0:         if(!(rti instanceof RuntimeNonElement)) return false;
aoqi@0: 
aoqi@0:         if(info.id()==ID.IDREF)
aoqi@0:             // IDREF is always handled as leaf -- Transducer maps IDREF String back to an object
aoqi@0:             return true;
aoqi@0: 
aoqi@0:         if(((RuntimeNonElement)rti).getTransducer()==null)
aoqi@0:             // Transducer!=null means definitely binds to PCDATA.
aoqi@0:             // even if transducer==null, a referene might be IDREF,
aoqi@0:             // in which case it will still produce PCDATA in this reference.
aoqi@0:             return false;
aoqi@0: 
aoqi@0:         if(!info.getIndividualType().equals(rti.getType()))
aoqi@0:             return false;
aoqi@0: 
aoqi@0:         return true;
aoqi@0:     }
aoqi@0: }