/*
* Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
* 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.tools.internal.xjc.generator.bean.field;
import java.util.ArrayList;
import java.util.List;
import com.sun.codemodel.internal.JBlock;
import com.sun.codemodel.internal.JClass;
import com.sun.codemodel.internal.JExpr;
import com.sun.codemodel.internal.JExpression;
import com.sun.codemodel.internal.JMethod;
import com.sun.codemodel.internal.JVar;
import com.sun.tools.internal.xjc.generator.bean.ClassOutlineImpl;
import com.sun.tools.internal.xjc.generator.bean.MethodWriter;
import com.sun.tools.internal.xjc.model.CPropertyInfo;
import com.sun.xml.internal.bind.api.impl.NameConverter;
/**
* Realizes a property as an untyped {@link List}.
*
* <pre>
* List getXXX();
* </pre>
*
* <h2>Default value handling</h2>
* <p>
* Since unmarshaller just adds new values into the storage,
* we can't fill the storage by default values at the time of
* instanciation. (or oherwise values found in the document will
* be appended to default values, where it should overwrite them.)
* <p>
* Therefore, when the object is created, the storage will be empty.
* When the getXXX method is called, we'll check if the storage is
* modified in anyway. If it is modified, it must mean that the values
* are found in the document, so we just return it.
*
* Otherwise we will fill in default values and return it to the user.
*
* <p>
* When a list has default values, its dirty flag is set to true.
* Marshaller will check this and treat it appropriately.
*
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
public class UntypedListField extends AbstractListField {
/**
* A concrete class that implements the List interface.
* An instance of this class will be used to store data
* for this field.
*/
private final JClass coreList;
/** List getFIELD() method. */
private JMethod $get;
/**
* @param coreList
* A concrete class that implements the List interface.
* An instance of this class will be used to store data
* for this field.
*/
protected UntypedListField(ClassOutlineImpl context, CPropertyInfo prop, JClass coreList) {
// the JAXB runtime picks ArrayList if the signature is List,
// so don't do eager allocation if it's ArrayList.
// otherwise we need to do eager allocation so that the collection type specified by the user
// will be used.
super(context, prop, !coreList.fullName().equals("java.util.ArrayList"));
this.coreList = coreList.narrow(exposedType.boxify());
generate();
}
protected final JClass getCoreListType() {
return coreList;
}
@Override
public void generateAccessors() {
final MethodWriter writer = outline.createMethodWriter();
final Accessor acc = create(JExpr._this());
// [RESULT]
// List getXXX() {
// return <ref>;
// }
$get = writer.declareMethod(listT,"get"+prop.getName(true));
writer.javadoc().append(prop.javadoc);
JBlock block = $get.body();
fixNullRef(block); // avoid using an internal getter
block._return(acc.ref(true));
String pname = NameConverter.standard.toVariableName(prop.getName(true));
writer.javadoc().append(
"Gets the value of the "+pname+" property.\n\n"+
"<p>\n" +
"This accessor method returns a reference to the live list,\n" +
"not a snapshot. Therefore any modification you make to the\n" +
"returned list will be present inside the JAXB object.\n" +
"This is why there is not a <CODE>set</CODE> method for the " +pname+ " property.\n" +
"\n"+
"<p>\n" +
"For example, to add a new item, do as follows:\n"+
"<pre>\n"+
" get"+prop.getName(true)+"().add(newItem);\n"+
"</pre>\n"+
"\n\n"
);
writer.javadoc().append(
"<p>\n" +
"Objects of the following type(s) are allowed in the list\n")
.append(listPossibleTypes(prop));
}
public Accessor create(JExpression targetObject) {
return new Accessor(targetObject);
}
class Accessor extends AbstractListField.Accessor {
protected Accessor( JExpression $target ) {
super($target);
}
public void toRawValue(JBlock block, JVar $var) {
// [RESULT]
// $<var>.addAll(bean.getLIST());
// list.toArray( array );
block.assign($var,JExpr._new(codeModel.ref(ArrayList.class).narrow(exposedType.boxify())).arg(
$target.invoke($get)
));
}
public void fromRawValue(JBlock block, String uniqueName, JExpression $var) {
// [RESULT]
// bean.getLIST().addAll($<var>);
JVar $list = block.decl(listT,uniqueName+'l',$target.invoke($get));
block.invoke($list,"addAll").arg($var);
}
}
}