IM服务端

hefeixia

2021-02-18 5b8c95c760840f09910730943b21391e47187315

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package frame.object.reader;
 
import java.util.List;
import java.util.Map;
import java.util.Set;
 
import frame.util.ContentBuilder;
import frame.variant.translator.ITranslator;
import frame.variant.translator.Translator;
 
 
public class MapReader extends EntityReader {
 
    protected ITranslator translator;
    protected IEntityReader valueReader;
    
    public MapReader(Class<?> clazz) throws Exception {
        super(clazz);
    }
 
    @Override
    protected void initValueReader(Class<?> dataType) throws Exception {
        if (translator == null && valueReader == null) {
            if (Translator.containsType(dataType)) {
                translator = Translator.getInstance(dataType);
            }
            else {
                valueReader = EntityReader.getInstance(dataType);
            }
        }
    }
    
    @SuppressWarnings("unchecked")
    @Override
    public String getString(Object entity) {
        try {
            Map<Object, Object> map = (Map<Object, Object>) entity;        
            
            if (map.isEmpty()) {
                return "[]";
            }
            
            ContentBuilder result = new ContentBuilder();
            result.append("[");
            
            Set<Object> keys = map.keySet();
 
            initValueReader(keys.iterator().next().getClass());
        
            for (Object key: keys) {
                Object obj = map.get(key);
                
                try {
                    if (translator != null) {
                        result.append(key, ",").append(":").append(translator.toString(obj));
                    }
                    else {
                        result.append(key, ",").append(":").append(valueReader.getString(obj));
                    }                    
                }
                catch (Exception e) {
                    result.append(key, ",").append(":error");
                }
            }
            
            result.append("]");
            return result.toString();
        } 
        catch (Exception e) {
            return e.getMessage();
        }
    }
 
    @SuppressWarnings("unchecked")
    @Override
    public String getJSONString(Object entity) throws Exception {
        Map<Object, Object> map = (Map<Object, Object>) entity;
        
        if (map.isEmpty()) {
            return "{}";
        }
        
        ContentBuilder result = new ContentBuilder();
        result.append("{");
        
        Set<Object> keys = map.keySet();
        
        try {
            Class<?> clazz = keys.iterator().next().getClass();
            initValueReader(clazz);
        } catch (Exception e) {
            return e.getMessage();
        }
        
        for (Object key: keys) {
            Object obj = map.get(key);
            
            try {
                if (translator != null) {
                    result.append("\"", ",").append(key).append("\":").append(translator.toJSONString(obj));
                }
                else {
                    result.append("\"", ",").append(key).append("\":").append(valueReader.getJSONString(obj));
                }                
            }
            catch (Exception e) {
                result.append("\"", ",").append(key).append("\":\"error\"");
            }
        }
        
        result.append("}");
        return result.toString();
    }
 
 
    @Override
    public String getJSONString(Object entity, String defaultValue) {
        try {
            return getJSONString(entity);
        }
        catch (Exception e) {
            return defaultValue;
        }
    }
 
    @Override
    public List<NameValuePair> getValueList(Object entity) throws Exception {
        return null;
    }
 
}