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package com.sun.tools.xjc.generator.bean.field;
import java.util.List;
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JConditional;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JExpression;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JType;
import com.sun.codemodel.JVar;
import com.sun.tools.xjc.generator.bean.ClassOutlineImpl;
import com.sun.tools.xjc.generator.bean.MethodWriter;
import com.sun.tools.xjc.model.CPropertyInfo;
import com.sun.tools.xjc.outline.FieldAccessor;
import com.sun.xml.bind.api.impl.NameConverter;
/**
* Realizes a property through one getter and one setter.
* This renders:
*
* <pre>
* T' field;
* T getXXX() { ... }
* void setXXX(T value) { ... }
* </pre>
*
* <p>
* Normally T'=T, but under some tricky circumstances they could be different
* (like T'=Integer, T=int.)
*
* This realization is only applicable to fields with (1,1)
* or (0,1) multiplicity.
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
public class SingleField extends AbstractFieldWithVar {
protected SingleField(ClassOutlineImpl context, CPropertyInfo prop) {
this(context,prop,false);
}
/**
*
* @param forcePrimitiveAccess
* forces the setter/getter to expose the primitive type.
* it's a pointless customization, but it's nevertheless in the spec.
*/
protected SingleField(ClassOutlineImpl context, CPropertyInfo prop, boolean forcePrimitiveAccess ) {
super(context, prop);
assert !exposedType.isPrimitive() && !implType.isPrimitive();
createField();
MethodWriter writer = context.createMethodWriter();
NameConverter nc = context.parent().getModel().getNameConverter();
// [RESULT]
// Type getXXX() {
// #ifdef default value
// if(value==null)
// return defaultValue;
// #endif
// return value;
// }
JExpression defaultValue = null;
if(prop.defaultValue!=null)
defaultValue = prop.defaultValue.compute(outline.parent());
// if Type is a wrapper and we have a default value,
// we can use the primitive type.
JType getterType;
if(defaultValue!=null || forcePrimitiveAccess)
getterType = exposedType.unboxify();
else
getterType = exposedType;
JMethod $get = writer.declareMethod( getterType,getGetterMethod() );
String javadoc = prop.javadoc;
if(javadoc.length()==0)
javadoc = Messages.DEFAULT_GETTER_JAVADOC.format(nc.toVariableName(prop.getName(true)));
writer.javadoc().append(javadoc);
if(defaultValue==null) {
$get.body()._return(ref());
} else {
JConditional cond = $get.body()._if(ref().eq(JExpr._null()));
cond._then()._return(defaultValue);
cond._else()._return(ref());
}
List<Object> possibleTypes = listPossibleTypes(prop);
writer.javadoc().addReturn()
.append("possible object is\n")
.append(possibleTypes);
// [RESULT]
// void setXXX(Type newVal) {
// this.value = newVal;
// }
JMethod $set = writer.declareMethod( codeModel.VOID, "set"+prop.getName(true) );
JType setterType = exposedType;
if(forcePrimitiveAccess) setterType = setterType.unboxify();
JVar $value = writer.addParameter( setterType, "value" );
JBlock body = $set.body();
body.assign(JExpr._this().ref(ref()),castToImplType($value));
// setter always get the default javadoc. See issue #381
writer.javadoc().append(Messages.DEFAULT_SETTER_JAVADOC.format(nc.toVariableName(prop.getName(true))));
writer.javadoc().addParam($value)
.append("allowed object is\n")
.append(possibleTypes);
}
public final JType getFieldType() {
return implType;
}
public FieldAccessor create(JExpression targetObject) {
return new Accessor(targetObject);
}
protected class Accessor extends AbstractFieldWithVar.Accessor {
protected Accessor(JExpression $target) {
super($target);
}
public void unsetValues( JBlock body ) {
body.assign( $ref, JExpr._null() );
}
public JExpression hasSetValue() {
return $ref.ne( JExpr._null() );
}
}
}