private void serialize(Serializer serializer, Collection<EntityType> models) {
for (EntityType model : models) {
try {
Type type = conf.getTypeMappings().getPathType(model, model, true);
String packageName = type.getPackageName();
String className =
!packageName.isEmpty()
? (packageName + "." + type.getSimpleName())
: type.getSimpleName();
// skip if type is excluded class or in excluded package
if (conf.isExcludedPackage(model.getPackageName())
|| conf.isExcludedClass(model.getFullName())) {
continue;
}
Set<TypeElement> elements = context.typeElements.get(model.getFullName());
if (elements == null) {
elements = new HashSet<TypeElement>();
}
for (Property property : model.getProperties()) {
if (property.getType().getCategory() == TypeCategory.CUSTOM) {
Set<TypeElement> customElements =
context.typeElements.get(property.getType().getFullName());
if (customElements != null) {
elements.addAll(customElements);
}
}
}
processingEnv
.getMessager()
.printMessage(Kind.NOTE, "Generating " + className + " for " + elements);
JavaFileObject fileObject =
processingEnv
.getFiler()
.createSourceFile(className, elements.toArray(new Element[elements.size()]));
Writer writer = fileObject.openWriter();
try {
SerializerConfig serializerConfig = conf.getSerializerConfig(model);
serializer.serialize(model, serializerConfig, new JavaWriter(writer));
} finally {
if (writer != null) {
writer.close();
}
}
} catch (IOException e) {
System.err.println(e.getMessage());
processingEnv.getMessager().printMessage(Kind.ERROR, e.getMessage());
}
}
}
private void validateMetaTypes() {
for (Collection<EntityType> entityTypes :
Arrays.asList(
context.supertypes.values(),
context.entityTypes.values(),
context.extensionTypes.values(),
context.embeddableTypes.values(),
context.projectionTypes.values())) {
for (EntityType entityType : entityTypes) {
for (Property property : entityType.getProperties()) {
if (property.getInits() != null && property.getInits().size() > 0) {
validateInits(entityType, property);
}
}
}
}
}
protected void validateInits(EntityType entityType, Property property) {
for (String init : property.getInits()) {
if (!init.startsWith("*") && property.getType() instanceof EntityType) {
String initProperty = init.contains(".") ? init.substring(0, init.indexOf('.')) : init;
if (!((EntityType) property.getType()).getPropertyNames().contains(initProperty)) {
processingEnv
.getMessager()
.printMessage(
Kind.ERROR,
"Illegal inits of "
+ entityType.getFullName()
+ "."
+ property.getName()
+ ": "
+ initProperty
+ " not found");
}
}
}
}
// 循环处理每个需要处理的程序对象
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
// 定义一个文件输出流，用于生成额外的文件
PrintStream ps = null;
try {
// 遍历每个被@Persistent修饰的class文件
for (Element t : roundEnv.getElementsAnnotatedWith(Persistent.class)) {
// 获取正在处理的类名
Name clazzName = t.getSimpleName();
// 获取类定义前的@Persistent Annotation
Persistent per = t.getAnnotation(Persistent.class);
// 创建文件输出流
ps = new PrintStream(new FileOutputStream(clazzName + ".hbm.xml"));
// 执行输出
ps.println("<?xml version=\"1.0\"?>");
ps.println("<!DOCTYPE hibernate-mapping PUBLIC");
ps.println(" \"-//Hibernate/Hibernate " + "Mapping DTD 3.0//EN\"");
ps.println(" \"http://www.hibernate.org/dtd/" + "hibernate-mapping-3.0.dtd\">");
ps.println("<hibernate-mapping>");
ps.print(" <class name=\"" + t);
// 输出per的table()的值
ps.println("\" table=\"" + per.table() + "\">");
for (Element f : t.getEnclosedElements()) {
// 只处理成员变量上的Annotation
if (f.getKind() == ElementKind.FIELD) // ①
{
// 获取成员变量定义前的@Id Annotation
Id id = f.getAnnotation(Id.class); // ②
// 当@Id Annotation存在时输出<id.../>元素
if (id != null) {
ps.println(
" <id name=\""
+ f.getSimpleName()
+ "\" column=\""
+ id.column()
+ "\" type=\""
+ id.type()
+ "\">");
ps.println(" <generator class=\"" + id.generator() + "\"/>");
ps.println(" </id>");
}
// 获取成员变量定义前的@Property Annotation
Property p = f.getAnnotation(Property.class); // ③
// 当@Property Annotation存在时输出<property.../>元素
if (p != null) {
ps.println(
" <property name=\""
+ f.getSimpleName()
+ "\" column=\""
+ p.column()
+ "\" type=\""
+ p.type()
+ "\"/>");
}
}
}
ps.println(" </class>");
ps.println("</hibernate-mapping>");
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
if (ps != null) {
try {
ps.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
return true;
}