方便到令人发指的枚举工具类

妖狐艹你老母 2023-10-02 12:39 55阅读 0赞

## 第一套 ##

### 接口 ###

public interface Typable<T> {
        
        T getCode();
    
        String getDesc();
    
        default boolean isEqual(T code) {
        
            return Objects.nonNull(code) && code.equals(this.getCode());
        }
    
        boolean isValid(T code);
    }

### 实现类 ###

> Static 可以好好利用下

#### Integer ####

public enum CommonStatus implements Typable<Integer> {
        
        DEF(0, "默认"),
        ON(1, "启用"),
        OFF(4, "停用");
    
        private int code;
        private String desc;
    
        CommonStatus(Integer code, String desc) {
        
            this.code = code;
            this.desc = desc;
        }
    
        @Override
        public Integer getCode() {
        
            return code;
        }
    
        @Override
        public String getDesc() {
        
            return desc;
        }
    
        public <T extends Typable> T getType(Integer code) {
        
            return (T) types.get(code);
        }
        @Override
        public boolean isValid(Integer code) {
        
            return types.containsKey(code);
        }
    
    
        private static Map<Integer, CommonStatus> types = new HashMap<>();
    
        static {
        
            for (CommonStatus type : CommonStatus.values()) {
        
                types.put(type.getCode(), type);
            }
        }
    }

#### String ####

public enum  AlgorithmNameType implements Typable<String> {
        
    
        ALGO_SREP_01("ALGO_SREP_01","补货code码"),
        ALGO_SVF_01("ALGO_SVF_01","预测code码");
    
        private String code;
        private String desc;
    
        AlgorithmNameType(String code, String desc) {
        
            this.code = code;
            this.desc = desc;
        }
    
        @Override
        public String getCode() {
        
            return code;
        }
    
        @Override
        public String getDesc() {
        
            return desc;
        }
    
        public <T extends Typable> T getType(String code) {
        
            return (T) types.get(code);
        }
        @Override
        public boolean isValid(String code) {
        
            return types.containsKey(code);
        }
    
    
        private static Map<String, AlgorithmNameType> types = new HashMap<>();
    
        static {
        
            for (AlgorithmNameType type : AlgorithmNameType.types.values()) {
        
                types.put(type.getCode(), type);
            }
        }
    }

## 第二套 ##

### 接口 ###

public interface EnumType {
        
        static <E extends Enum<E> & EnumType> E getByName(String name, Class<E> clazz) {
        
            Objects.requireNonNull(name);
            Objects.requireNonNull(clazz);
    
            EnumSet<E> all = EnumSet.allOf(clazz);
            return all.stream().filter(e -> e.name().equals(name)).findFirst().orElse(null);
        }
    
        /**
         * @return
         */
        String getText();
    }

### 实现类 ###

#### Integer ####

public interface EnumTypeOfIntCode extends EnumType {
        
        static <E extends Enum<E> & EnumTypeOfIntCode> E getByCode(Integer code, Class<E> clazz) {
        
            Objects.requireNonNull(code);
            Objects.requireNonNull(clazz);
    
            EnumSet<E> all = EnumSet.allOf(clazz);
            return all.stream().filter(e -> Objects.equals(e.getCode(), code)).findFirst().orElse(null);
        }
    
        int getCode();
    }

#### String ####

public interface EnumTypeOfStringCode extends EnumType {
        
    
        static <E extends Enum<E> & EnumTypeOfStringCode> E getByCode(String code, Class<E> clazz) {
        
            Objects.requireNonNull(code);
            Objects.requireNonNull(clazz);
    
            EnumSet<E> all = EnumSet.allOf(clazz);
            return all.stream().filter(e -> e.getCode().equals(code)).findFirst().orElse(null);
        }
    
        String getCode();
    }