content: /*
   * Copyright (c) 2013. wyouflf (wyouflf@gmail.com)
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.rsen.db.table;
  
  
  import com.rsen.db.LogUtil;
  import com.rsen.db.annotation.Column;
  import com.rsen.db.converter.ColumnConverterFactory;
  
  import java.lang.reflect.Field;
  import java.lang.reflect.Modifier;
  import java.util.HashMap;
  import java.util.LinkedHashMap;
  
  /* package */ final class TableUtils {
  
      private TableUtils() {
      }
  
      /* package */
      static synchronized LinkedHashMap<String, ColumnEntity> findColumnMap(Class<?> entityType) {
          LinkedHashMap<String, ColumnEntity> columnMap = new LinkedHashMap<String, ColumnEntity>();
          addColumns2Map(entityType, columnMap);
          return columnMap;
      }
  
      private static void addColumns2Map(Class<?> entityType, HashMap<String, ColumnEntity> columnMap) {
          if (Object.class.equals(entityType)) return;
  
          try {
              Field[] fields = entityType.getDeclaredFields();
              for (Field field : fields) {
                  int modify = field.getModifiers();
                  if (Modifier.isStatic(modify) || Modifier.isTransient(modify)) {
                      continue;
                  }
                  Column columnAnn = field.getAnnotation(Column.class);
                  if (columnAnn != null) {
                      if (ColumnConverterFactory.isSupportColumnConverter(field.getType())) {
                          ColumnEntity column = new ColumnEntity(entityType, field, columnAnn);
                          if (!columnMap.containsKey(column.getName())) {
                              columnMap.put(column.getName(), column);
                          }
                      }
                  }
              }
  
              addColumns2Map(entityType.getSuperclass(), columnMap);
          } catch (Throwable e) {
              LogUtil.e(e.getMessage(), e);
          }
      }
  }
  