Examples with ValueProxy org.nutz.ioc.ValueProxy used on opensource projects

Example 1 with ValueProxy

use of org.nutz.ioc.ValueProxy in project nutz by nutzam.

the class IocCustomizedValueTypeTest method test_simple_customized.

@Test
public void test_simple_customized() {
    String json = "{xb:{name:{cc:'XiaoBai'}}}";
    Ioc2 ioc = new NutIoc(new MapLoader(json));
    ioc.addValueProxyMaker(new ValueProxyMaker() {

        public ValueProxy make(IocMaking ing, IocValue iv) {
            if ("cc".equalsIgnoreCase(iv.getType())) {
                return new StaticValue("CC:" + iv.getValue());
            }
            return null;
        }

        public String[] supportedTypes() {
            return Lang.array("cc");
        }
    });
    Pet pet = ioc.get(Pet.class, "xb");
    assertEquals("CC:XiaoBai", pet.getName());
    ioc.depose();
}

Example 2 with ValueProxy

use of org.nutz.ioc.ValueProxy in project nutz by nutzam.

the class DefaultValueProxyMaker method make.

@SuppressWarnings("unchecked")
public ValueProxy make(IocMaking ing, IocValue iv) {
    Object value = iv.getValue();
    String type = iv.getType();
    // Null
    if ("null".equals(type) || null == value) {
        return new StaticValue(null);
    }
    if (value instanceof ValueProxy) {
        return (ValueProxy) value;
    } else // String, Number, .....
    if ("normal".equals(type) || null == type) {
        // Array
        if (value.getClass().isArray()) {
            Object[] vs = (Object[]) value;
            IocValue[] tmp = new IocValue[vs.length];
            for (int i = 0; i < tmp.length; i++) tmp[i] = (IocValue) vs[i];
            return new ArrayValue(ing, tmp);
        } else // Map
        if (value instanceof Map<?, ?>) {
            return new MapValue(ing, (Map<String, IocValue>) value, (Class<? extends Map<String, Object>>) value.getClass());
        } else // Collection
        if (value instanceof Collection<?>) {
            return new CollectionValue(ing, (Collection<IocValue>) value, (Class<? extends Collection<Object>>) value.getClass());
        } else // Inner Object
        if (value instanceof IocObject) {
            return new InnerValue((IocObject) value);
        }
        return new StaticValue(value);
    } else // Refer
    if ("refer".equals(type)) {
        String s = value.toString();
        if (null != s) {
            String renm = s.toLowerCase();
            // $Ioc
            if ("$ioc".equals(renm)) {
                return new IocSelfValue();
            } else // $Name
            if ("$name".equals(renm)) {
                return new ObjectNameValue();
            } else // $Context
            if ("$context".equals(renm)) {
                return new IocContextObjectValue();
            }
        }
        return new ReferValue(s);
    } else // Refer_Type
    if (IocValue.TYPE_REFER_TYPE.equals(type)) {
        if (value instanceof CharSequence) {
            String[] tmp = value.toString().split("#");
            return new ReferTypeValue(tmp[0], Lang.forName(tmp[1], Object.class));
        } else if (value instanceof Field) {
            return new ReferTypeValue((Field) value);
        }
        throw new IocException(ing.getObjectName(), "unspported refer_type:'%s'", value);
    } else // Java
    if ("java".equals(type)) {
        return new JavaValue(value.toString());
    } else // File
    if ("file".equals(type)) {
        return new FileValue(value.toString());
    } else // Env
    if ("env".equals(type)) {
        return new EnvValue(value);
    } else // System Properties
    if ("sys".equals(type)) {
        return new SysPropValue(value);
    } else // Inner
    if ("inner".equals(type)) {
        return new InnerValue((IocObject) value);
    } else // JNDI
    if ("jndi".equals(type)) {
        return new JNDI_Value(value.toString());
    } else if ("el".equals(type)) {
        return new EL_Value(value.toString());
    }
    return null;
}

Example 3 with ValueProxy

use of org.nutz.ioc.ValueProxy in project nutz by nutzam.

the class ObjectMakerImpl method make.

public ObjectProxy make(final IocMaking ing, IocObject iobj) {
    // 获取 Mirror， AOP 将在这个方法中进行
    Mirror<?> mirror = ing.getMirrors().getMirror(iobj.getType(), ing.getObjectName());
    // 获取配置的对象事件集合
    IocEventSet iocEventSet = iobj.getEvents();
    // 建立对象代理，并保存在上下文环境中 只有对象为 singleton
    // 并且有一个非 null 的名称的时候才会保存
    // 就是说，所有内部对象，将会随这其所附属的对象来保存，而自己不会单独保存
    ObjectProxy op = new ObjectProxy();
    if (iobj.isSingleton() && null != ing.getObjectName())
        ing.getContext().save(iobj.getScope(), ing.getObjectName(), op);
    // 为对象代理设置触发事件
    if (null != iobj.getEvents()) {
        op.setFetch(createTrigger(mirror, iocEventSet.getFetch()));
        op.setDepose(createTrigger(mirror, iocEventSet.getDepose()));
    }
    try {
        // 准备对象的编织方式
        DefaultWeaver dw = new DefaultWeaver();
        op.setWeaver(dw);
        // 为编织器设置事件触发器：创建时
        if (null != iobj.getEvents()) {
            dw.setCreate(createTrigger(mirror, iocEventSet.getCreate()));
        }
        // 构造函数参数
        ValueProxy[] vps = new ValueProxy[Lang.length(iobj.getArgs())];
        for (int i = 0; i < vps.length; i++) vps[i] = ing.makeValue(iobj.getArgs()[i]);
        dw.setArgs(vps);
        // 先获取一遍，根据这个数组来获得构造函数
        Object[] args = new Object[vps.length];
        boolean hasNullArg = false;
        for (int i = 0; i < args.length; i++) {
            args[i] = vps[i].get(ing);
            if (args[i] == null) {
                hasNullArg = true;
            }
        }
        // 缓存构造函数
        if (iobj.getFactory() != null) {
            // factory这属性, 格式应该是 类名#方法名 或者 $iocbean#方法名
            final String[] ss = iobj.getFactory().split("#", 2);
            if (ss[0].startsWith("$")) {
                dw.setBorning(new Borning<Object>() {

                    public Object born(Object... args) {
                        Object factoryBean = ing.getIoc().get(null, ss[0].substring(1));
                        return Mirror.me(factoryBean).invoke(factoryBean, ss[1], args);
                    }
                });
            } else {
                Mirror<?> mi = Mirror.me(Lang.loadClass(ss[0]));
                if (hasNullArg) {
                    Method m = (Method) Lang.first(mi.findMethods(ss[1], args.length));
                    if (m == null)
                        throw new IocException(ing.getObjectName(), "Factory method not found --> ", iobj.getFactory());
                    dw.setBorning(new MethodCastingBorning<Object>(m));
                } else {
                    Method m = mi.findMethod(ss[1], args);
                    dw.setBorning(new MethodBorning<Object>(m));
                }
            }
        } else {
            dw.setBorning((Borning<?>) mirror.getBorning(args));
        }
        // 如果这个对象是容器中的单例，那么就可以生成实例了
        // 这一步非常重要，它解除了字段互相引用的问题
        Object obj = null;
        if (iobj.isSingleton()) {
            obj = dw.born(ing);
            op.setObj(obj);
        }
        // 获得每个字段的注入方式
        List<IocField> _fields = new ArrayList<IocField>(iobj.getFields().values());
        FieldInjector[] fields = new FieldInjector[_fields.size()];
        for (int i = 0; i < fields.length; i++) {
            IocField ifld = _fields.get(i);
            try {
                ValueProxy vp = ing.makeValue(ifld.getValue());
                fields[i] = FieldInjector.create(mirror, ifld.getName(), vp, ifld.isOptional());
            } catch (Exception e) {
                throw Lang.wrapThrow(e, "Fail to eval Injector for field: '%s'", ifld.getName());
            }
        }
        dw.setFields(fields);
        // 如果是单例对象，前面已经生成实例了，在这里需要填充一下它的字段
        if (null != obj)
            dw.fill(ing, obj);
        // 对象创建完毕，如果有 create 事件，调用它
        dw.onCreate(obj);
    } catch (IocException e) {
        ing.getContext().remove(iobj.getScope(), ing.getObjectName());
        ((IocException) e).addBeanNames(ing.getObjectName());
        throw e;
    }// 当异常发生，从 context 里移除 ObjectProxy
     catch (Throwable e) {
        ing.getContext().remove(iobj.getScope(), ing.getObjectName());
        throw new IocException(ing.getObjectName(), e, "throw Exception when creating");
    }
    // 返回
    return op;
}