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/*
 * Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

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 cn.lzgabel.jaxb.core.api.impl.NameConverter;

/**
 * Realizes a property through one getter and one setter.
 * This renders:
 *
 * 
 * T' field;
 * T getXXX() { ... }
 * void setXXX(T value) { ... }
 * 
* *

* 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 ([email protected]) */ 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 (getOptions().enableIntrospection) { if (forcePrimitiveAccess) getterType = exposedType.unboxify(); else getterType = exposedType; } else { 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 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 = $set.body(); if ($value.type().equals(implType)) { body.assign(JExpr._this().ref(ref()), $value); } else { body.assign(JExpr._this().ref(ref()), castToImplType($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); } @Override public final JType getFieldType() { return implType; } @Override public FieldAccessor create(JExpression targetObject) { return new Accessor(targetObject); } protected class Accessor extends AbstractFieldWithVar.Accessor { protected Accessor(JExpression $target) { super($target); } @Override public void unsetValues( JBlock body ) { body.assign( $ref, JExpr._null() ); } @Override public JExpression hasSetValue() { return $ref.ne( JExpr._null() ); } } }