/*
* 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.Arrays;
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.JForLoop;
import com.sun.codemodel.internal.JMethod;
import com.sun.codemodel.internal.JOp;
import com.sun.codemodel.internal.JType;
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;
/**
* Realizes a property as an "indexed property"
* as specified in the JAXB spec.
*
* <p>
* We will generate the following set of methods:
* <pre>
* T[] getX();
* T getX( int idx );
* void setX(T[] values);
* void setX( int idx, T value );
* </pre>
*
* We still use List as our back storage.
* This renderer also handles boxing/unboxing if
* T is a boxed type.
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
final class ArrayField extends AbstractListField {
class Accessor extends AbstractListField.Accessor {
protected Accessor( JExpression $target ) {
super($target);
}
public void toRawValue(JBlock block, JVar $var) {
block.assign($var,codeModel.ref(Arrays.class).staticInvoke("asList").arg($target.invoke($getAll)));
}
public void fromRawValue(JBlock block, String uniqueName, JExpression $var) {
block.invoke($target,$setAll).arg($var.invoke("toArray").arg(JExpr.newArray(exposedType,$var.invoke("size"))));
}
}
private JMethod $setAll;
private JMethod $getAll;
ArrayField(ClassOutlineImpl context, CPropertyInfo prop) {
super(context,prop,false);
generate();
}
public void generateAccessors() {
MethodWriter writer = outline.createMethodWriter();
Accessor acc = create(JExpr._this());
JVar $idx,$value; JBlock body;
JType arrayType = exposedType.array();
// [RESULT] T[] getX() {
// if( <var>==null ) return new T[0];
// return (T[]) <var>.toArray(new T[<var>.size()]);
// }
$getAll = writer.declareMethod( exposedType.array(),"get"+prop.getName(true));
writer.javadoc().append(prop.javadoc);
body = $getAll.body();
body._if( acc.ref(true).eq(JExpr._null()) )._then()
._return(JExpr.newArray(exposedType,0));
if(primitiveType==null) {
body._return(JExpr.cast(arrayType,
acc.ref(true).invoke("toArray").arg( JExpr.newArray(implType,acc.ref(true).invoke("size")) )));
} else {
// need to copy them manually to unbox values
// [RESULT]
// T[] r = new T[<ref>.size()];
// for( int i=0; i<r.length; i++ )
// r[i] = unbox(<ref>.get(i));
JVar $r = body.decl(exposedType.array(),"r",JExpr.newArray(exposedType, acc.ref(true).invoke("size")));
JForLoop loop = body._for();
JVar $i = loop.init(codeModel.INT,"__i",JExpr.lit(0));
loop.test($i.lt($r.ref("length")));
loop.update($i.incr());
loop.body().assign( $r.component($i),
primitiveType.unwrap(acc.ref(true).invoke("get").arg($i)) );
body._return($r);
}
List<Object> returnTypes = listPossibleTypes(prop);
writer.javadoc().addReturn().append("array of\n").append(returnTypes);
// [RESULT]
// ET getX(int idx) {
// if( <var>==null ) throw new IndexOutOfBoundsException();
// return unbox(<var>.get(idx));
// }
JMethod $get = writer.declareMethod(exposedType,"get"+prop.getName(true));
$idx = writer.addParameter(codeModel.INT,"idx");
$get.body()._if(acc.ref(true).eq(JExpr._null()))._then()
._throw(JExpr._new(codeModel.ref(IndexOutOfBoundsException.class)));
writer.javadoc().append(prop.javadoc);
$get.body()._return(acc.unbox(acc.ref(true).invoke("get").arg($idx) ));
writer.javadoc().addReturn().append("one of\n").append(returnTypes);
// [RESULT] int getXLength() {
// if( <var>==null ) throw new IndexOutOfBoundsException();
// return <ref>.size();
// }
JMethod $getLength = writer.declareMethod(codeModel.INT,"get"+prop.getName(true)+"Length");
$getLength.body()._if(acc.ref(true).eq(JExpr._null()))._then()
._return(JExpr.lit(0));
$getLength.body()._return(acc.ref(true).invoke("size"));
// [RESULT] void setX(ET[] values) {
// clear();
// int len = values.length;
// for( int i=0; i<len; i++ )
// <ref>.add(values[i]);
// }
$setAll = writer.declareMethod(
codeModel.VOID,
"set"+prop.getName(true));
writer.javadoc().append(prop.javadoc);
$value = writer.addParameter(exposedType.array(),"values");
$setAll.body().invoke(acc.ref(false),"clear");
JVar $len = $setAll.body().decl(codeModel.INT,"len", $value.ref("length"));
JForLoop _for = $setAll.body()._for();
JVar $i = _for.init( codeModel.INT, "i", JExpr.lit(0) );
_for.test( JOp.lt($i,$len) );
_for.update( $i.incr() );
_for.body().invoke(acc.ref(true),"add").arg(castToImplType(acc.box($value.component($i))));
writer.javadoc().addParam($value)
.append("allowed objects are\n")
.append(returnTypes);
// [RESULT] ET setX(int,ET)
JMethod $set = writer.declareMethod(
exposedType,
"set"+prop.getName(true));
$idx = writer.addParameter( codeModel.INT, "idx" );
$value = writer.addParameter( exposedType, "value" );
writer.javadoc().append(prop.javadoc);
body = $set.body();
body._return( acc.unbox(
acc.ref(true).invoke("set").arg($idx).arg(castToImplType(acc.box($value)))));
writer.javadoc().addParam($value)
.append("allowed object is\n")
.append(returnTypes);
}
protected JClass getCoreListType() {
return codeModel.ref(ArrayList.class).narrow(exposedType.boxify());
}
public Accessor create(JExpression targetObject) {
return new Accessor(targetObject);
}
}