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creator

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redkale
2024-10-10 22:29:39 +08:00
parent ed2d9527bf
commit 8ea63c5171
5 changed files with 128 additions and 35 deletions
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62
src/main/java/org/redkale/util/Creator.java
View File

@@ -113,6 +113,15 @@ public interface Creator<T> {
return Inners.CreatorInner.creatorCacheMap.computeIfAbsent(clazz, v -> create(clazz));
}
public static <T> Creator<T> load(Class<T> clazz, int paramCount) {
if (paramCount < 0) {
return Inners.CreatorInner.creatorCacheMap.computeIfAbsent(clazz, v -> create(clazz));
} else {
return Inners.CreatorInner.creatorCacheMap2.computeIfAbsent(
clazz.getName() + "-" + paramCount, v -> create(clazz, paramCount));
}
}
public static <T> Creator<T> register(Class<T> clazz, final Supplier<T> supplier) {
Creator<T> creator = (Object... params) -> supplier.get();
Inners.CreatorInner.creatorCacheMap.put(clazz, creator);
@@ -200,6 +209,20 @@ public interface Creator<T> {
*/
@SuppressWarnings("unchecked")
public static <T> Creator<T> create(Class<T> clazz) {
return create(clazz, -1);
}
/**
* 根据指定的class采用ASM技术生产Creator。
*
* @param <T> 构建类的数据类型
* @param clazz 构建类
* @param paramCount 参数个数
* @return Creator对象
* @since 2.8.0
*/
@SuppressWarnings("unchecked")
public static <T> Creator<T> create(Class<T> clazz, int paramCount) {
if (List.class.isAssignableFrom(clazz)
&& (clazz.isAssignableFrom(ArrayList.class)
|| clazz.getName().startsWith("java.util.Collections")
@@ -237,9 +260,11 @@ public interface Creator<T> {
} else if (Future.class.isAssignableFrom(clazz) && clazz.isAssignableFrom(CompletableFuture.class)) {
clazz = (Class<T>) CompletableFuture.class;
}
Creator creator = Inners.CreatorInner.creatorCacheMap.get(clazz);
if (creator != null) {
return creator;
if (paramCount < 0) {
Creator creator = Inners.CreatorInner.creatorCacheMap.get(clazz);
if (creator != null) {
return creator;
}
}
if (clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) {
throw new RedkaleException("[" + clazz + "] is a interface or abstract class, cannot create it's Creator.");
@@ -274,7 +299,7 @@ public interface Creator<T> {
loader = clazz.getClassLoader();
}
final String newDynName = "org/redkaledyn/creator/_Dyn" + Creator.class.getSimpleName() + "__"
+ clazz.getName().replace('.', '_').replace('$', '_');
+ clazz.getName().replace('.', '_').replace('$', '_') + (paramCount < 0 ? "" : ("_" + paramCount));
try {
Class clz = RedkaleClassLoader.findDynClass(newDynName.replace('/', '.'));
return (Creator) (clz == null ? loader.loadClass(newDynName.replace('/', '.')) : clz)
@@ -289,7 +314,8 @@ public interface Creator<T> {
if (constructor0 == null) { // 1、查找public的空参数构造函数
for (Constructor c : clazz.getConstructors()) {
if (c.getParameterCount() == 0) {
int cc = c.getParameterCount();
if (cc == 0 && (paramCount < 0 || cc == paramCount)) {
constructor0 = c;
constructorParameters0 = new SimpleEntry[0];
break;
@@ -302,9 +328,9 @@ public interface Creator<T> {
if (cp == null) {
continue;
}
SimpleEntry<String, Class>[] fields =
Inners.CreatorInner.getConstructorField(clazz, c.getParameterCount(), cp.value());
if (fields != null) {
int cc = c.getParameterCount();
SimpleEntry<String, Class>[] fields = Inners.CreatorInner.getConstructorField(clazz, cc, cp.value());
if (fields != null && (paramCount < 0 || cc == paramCount)) {
constructor0 = c;
constructorParameters0 = fields;
break;
@@ -325,9 +351,10 @@ public interface Creator<T> {
// 优先参数最多的构造函数
cs.sort((o1, o2) -> o2.getParameterCount() - o1.getParameterCount());
for (Constructor c : cs) {
SimpleEntry<String, Class>[] fields = Inners.CreatorInner.getConstructorField(
clazz, c.getParameterCount(), Type.getConstructorDescriptor(c));
if (fields != null) {
int cc = c.getParameterCount();
SimpleEntry<String, Class>[] fields =
Inners.CreatorInner.getConstructorField(clazz, cc, Type.getConstructorDescriptor(c));
if (fields != null && (paramCount < 0 || cc == paramCount)) {
constructor0 = c;
constructorParameters0 = fields;
break;
@@ -343,9 +370,9 @@ public interface Creator<T> {
if (cp == null) {
continue;
}
SimpleEntry<String, Class>[] fields =
Inners.CreatorInner.getConstructorField(clazz, c.getParameterCount(), cp.value());
if (fields != null) {
int cc = c.getParameterCount();
SimpleEntry<String, Class>[] fields = Inners.CreatorInner.getConstructorField(clazz, cc, cp.value());
if (fields != null && (paramCount < 0 || cc == paramCount)) {
constructor0 = c;
constructorParameters0 = fields;
break;
@@ -369,9 +396,10 @@ public interface Creator<T> {
// 优先参数最多的构造函数
cs.sort((o1, o2) -> o2.getParameterCount() - o1.getParameterCount());
for (Constructor c : cs) {
SimpleEntry<String, Class>[] fields = Inners.CreatorInner.getConstructorField(
clazz, c.getParameterCount(), Type.getConstructorDescriptor(c));
if (fields != null) {
int cc = c.getParameterCount();
SimpleEntry<String, Class>[] fields =
Inners.CreatorInner.getConstructorField(clazz, cc, Type.getConstructorDescriptor(c));
if (fields != null && (paramCount < 0 || cc == paramCount)) {
constructor0 = c;
constructorParameters0 = fields;
break;

9
src/main/java/org/redkale/util/Inners.java
View File

@@ -25,7 +25,9 @@ class Inners {
static final Logger logger = Logger.getLogger(Creator.class.getSimpleName());
static final Map<Class, Creator> creatorCacheMap = new HashMap<>();
static final Map<Class, Creator> creatorCacheMap = new ConcurrentHashMap<>();
static final Map<String, Creator> creatorCacheMap2 = new ConcurrentHashMap<>();
static final Map<Class, IntFunction> arrayCacheMap = new ConcurrentHashMap<>();
@@ -160,8 +162,9 @@ class Inners {
final List<String> fieldNames = new ArrayList<>();
new ClassReader(out.toByteArray())
.accept(new SimpleClassVisitor(Opcodes.ASM6, fieldNames, constructorDesc), 0);
while (fieldNames.remove(" "))
; // 删掉空元素
while (fieldNames.remove(" ")) {
// 删掉空元素
}
if (fieldNames.isEmpty()) {
return null;
}