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package com.sun.tools.xjc.generator.bean.field;
import com.sun.codemodel.JAnnotatable;
import java.util.ArrayList;
import java.util.List;
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JExpression;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JVar;
import com.sun.tools.xjc.generator.bean.ClassOutlineImpl;
import com.sun.tools.xjc.model.CPropertyInfo;
import com.sun.tools.xjc.model.CReferencePropertyInfo;
import com.sun.xml.bind.annotation.OverrideAnnotationOf;
/**
* 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 DummyListField extends AbstractListField {
/**
* A concrete class that imp lements 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 DummyListField(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();
}
/**
* Annotate the field according to the recipes given as {@link CPropertyInfo}.
*/
@Override
protected void annotate( JAnnotatable field ) {
super.annotate(field);
if (prop instanceof CReferencePropertyInfo) {
CReferencePropertyInfo pref = (CReferencePropertyInfo)prop;
if (pref.isDummy()) {
annotateDummy(field);
}
}
}
private void annotateDummy(JAnnotatable field) {
field.annotate(OverrideAnnotationOf.class);
}
protected final JClass getCoreListType() {
return coreList;
}
@Override
public void generateAccessors() { }
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);
}
}
}