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@ -28,9 +28,13 @@ import com.arialyy.aria.util.CheckUtil; |
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import com.arialyy.aria.util.CommonUtil; |
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import java.lang.reflect.Field; |
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import java.lang.reflect.Modifier; |
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import java.lang.reflect.Type; |
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import java.lang.reflect.TypeVariable; |
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import java.util.ArrayList; |
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import java.util.Date; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Set; |
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/** |
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@ -47,6 +51,10 @@ final class SqlHelper extends SQLiteOpenHelper { |
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private static final int FIND_ALL_DATA = 5; |
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private static final int DEL_DATA = 6; |
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private static final String MAP_FIELD = "map$$"; |
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private static final String LIST_FIELD = "list$$"; |
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private static final String GENERIC_FIELD = "Generic$$"; |
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private static volatile SqlHelper INSTANCE = null; |
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static SqlHelper init(Context context) { |
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@ -186,12 +194,26 @@ final class SqlHelper extends SQLiteOpenHelper { |
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sql = String.format(sql, params); |
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print(FIND_DATA, sql); |
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Cursor cursor = db.rawQuery(sql, null); |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(clazz, cursor) : null; |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(db, clazz, cursor) : null; |
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cursor.close(); |
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close(db); |
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return data; |
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} |
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/** |
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* 条件查寻数据 |
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*/ |
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static synchronized <T extends DbEntity> List<T> findData(SQLiteDatabase db, String tableName, |
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String... expression) { |
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Class<T> clazz = null; |
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try { |
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clazz = (Class<T>) Class.forName(tableName); |
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} catch (ClassNotFoundException e) { |
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e.printStackTrace(); |
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} |
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return findData(db, clazz, expression); |
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} |
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/** |
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* 条件查寻数据 |
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*/ |
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@ -215,7 +237,7 @@ final class SqlHelper extends SQLiteOpenHelper { |
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} |
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print(FIND_DATA, sb.toString()); |
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Cursor cursor = db.rawQuery(sb.toString(), null); |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(clazz, cursor) : null; |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(db, clazz, cursor) : null; |
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cursor.close(); |
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close(db); |
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return data; |
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@ -230,7 +252,7 @@ final class SqlHelper extends SQLiteOpenHelper { |
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sb.append("SELECT rowid, * FROM ").append(CommonUtil.getClassName(clazz)); |
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print(FIND_ALL_DATA, sb.toString()); |
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Cursor cursor = db.rawQuery(sb.toString(), null); |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(clazz, cursor) : null; |
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List<T> data = cursor.getCount() > 0 ? newInstanceEntity(db, clazz, cursor) : null; |
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cursor.close(); |
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close(db); |
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return data; |
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@ -273,11 +295,22 @@ final class SqlHelper extends SQLiteOpenHelper { |
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} |
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sb.append(i > 0 ? ", " : ""); |
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try { |
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Object value = field.get(dbEntity); |
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sb.append(field.getName()) |
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.append("='") |
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.append(value == null ? "" : value.toString()) |
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.append("'"); |
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String value; |
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sb.append(field.getName()).append("='"); |
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Type type = field.getType(); |
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if (type == Map.class) { |
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value = map2Str((Map<String, String>) field.get(dbEntity)); |
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} else if (type == List.class) { |
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value = getListElementParams(field); |
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} else if (isOneToOne(field)) { |
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value = getOneToOneParams(field); |
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} else { |
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Object obj = field.get(dbEntity); |
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value = obj == null ? "" : obj.toString(); |
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} |
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sb.append(value == null ? "" : value); |
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sb.append("'"); |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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} |
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@ -307,24 +340,35 @@ final class SqlHelper extends SQLiteOpenHelper { |
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continue; |
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} |
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sb.append(i > 0 ? ", " : ""); |
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//sb.append(getFieldName(field.getType(), field));
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sb.append(field.getName()); |
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i++; |
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} |
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sb.append(") VALUES ("); |
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i = 0; |
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for (Field field : fields) { |
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field.setAccessible(true); |
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if (ignoreField(field)) { |
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continue; |
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} |
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sb.append(i > 0 ? ", " : ""); |
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sb.append("'"); |
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try { |
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sb.append(field.get(dbEntity)).append("'"); |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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try { |
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for (Field field : fields) { |
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field.setAccessible(true); |
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if (ignoreField(field)) { |
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continue; |
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} |
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sb.append(i > 0 ? ", " : ""); |
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sb.append("'"); |
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Type type = field.getType(); |
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if (type == Map.class) { |
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sb.append(map2Str((Map<String, String>) field.get(dbEntity))); |
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} else if (type == List.class) { |
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sb.append(getListElementParams(field)); |
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} else if (isOneToOne(field)) { |
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sb.append(getOneToOneParams(field)); |
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} else { |
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sb.append(field.get(dbEntity)); |
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} |
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sb.append("'"); |
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i++; |
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} |
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i++; |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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} |
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sb.append(")"); |
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print(INSERT_DATA, sb.toString()); |
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@ -333,6 +377,47 @@ final class SqlHelper extends SQLiteOpenHelper { |
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close(db); |
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} |
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/** |
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* 获取一对一参数 |
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*/ |
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private static String getOneToOneParams(Field field) { |
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OneToOne oneToOne = field.getAnnotation(OneToOne.class); |
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if (oneToOne == null) { |
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throw new IllegalArgumentException("@OneToOne注解的对象必须要有@Primary注解的字段"); |
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} |
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return oneToOne.table().getName() + "$$" + oneToOne.key(); |
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} |
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/** |
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* 获取List一对多参数 |
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* |
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* @param field list反射字段 |
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*/ |
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private static String getListElementParams(Field field) { |
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OneToMany oneToMany = field.getAnnotation(OneToMany.class); |
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if (oneToMany == null) { |
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throw new IllegalArgumentException("List中元素必须被@OneToMany注解"); |
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} |
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//关联的表名
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String tableName = oneToMany.table().getName(); |
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//关联的字段
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String key = oneToMany.key(); |
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return tableName + "$$" + key; |
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} |
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/** |
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* 查找class的主键字段 |
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* |
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* @return 返回主键字段名 |
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*/ |
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private static String getPrimaryName(Class<? extends DbEntity> clazz) { |
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List<Field> fields = CommonUtil.getAllFields(clazz); |
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for (Field field : fields) { |
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if (isPrimary(field)) return field.getName(); |
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} |
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return null; |
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} |
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/** |
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* 查找表是否存在 |
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* |
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@ -383,9 +468,13 @@ final class SqlHelper extends SQLiteOpenHelper { |
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if (ignoreField(field)) { |
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continue; |
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} |
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sb.append(field.getName()); |
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Class<?> type = field.getType(); |
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if (type == String.class) { |
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sb.append(field.getName()); |
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if (type == String.class |
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|| type == Map.class |
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|| type == List.class |
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|| isOneToOne(field) |
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|| type.isEnum()) { |
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sb.append(" varchar"); |
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} else if (type == int.class || type == Integer.class) { |
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sb.append(" interger"); |
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@ -404,6 +493,9 @@ final class SqlHelper extends SQLiteOpenHelper { |
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} else { |
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continue; |
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} |
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if (isPrimary(field)) { |
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sb.append(" PRIMARY KEY"); |
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} |
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sb.append(","); |
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} |
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String str = sb.toString(); |
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@ -414,15 +506,32 @@ final class SqlHelper extends SQLiteOpenHelper { |
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close(db); |
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} |
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///**
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// * 通过字段类型和获取保存在数据库表字段名
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// */
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//private static String getFieldName(Class<?> type, Field field) {
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// String fieldName;
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// if (type == Map.class) {
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// fieldName = MAP_FIELD + field.getName();
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// } else if (type == List.class) {
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// fieldName = LIST_FIELD + field.getName();
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// } else if (isGeneric(field)) {
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// fieldName = GENERIC_FIELD + field.getName();
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// } else {
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// fieldName = field.getName();
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// }
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// return fieldName;
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//}
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/** |
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* 打印数据库日志 |
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* |
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* @param type {@link DbUtil} |
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*/ |
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static void print(int type, String sql) { |
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if (true) { |
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return; |
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} |
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//if (true) {
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// return;
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//}
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String str = ""; |
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switch (type) { |
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case CREATE_TABLE: |
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@ -450,8 +559,8 @@ final class SqlHelper extends SQLiteOpenHelper { |
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/** |
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* 根据数据游标创建一个具体的对象 |
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*/ |
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static synchronized <T extends DbEntity> List<T> newInstanceEntity(Class<T> clazz, |
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Cursor cursor) { |
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private static synchronized <T extends DbEntity> List<T> newInstanceEntity(SQLiteDatabase db, |
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Class<T> clazz, Cursor cursor) { |
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List<Field> fields = CommonUtil.getAllFields(clazz); |
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List<T> entitys = new ArrayList<>(); |
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if (fields != null && fields.size() > 0) { |
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@ -482,8 +591,24 @@ final class SqlHelper extends SQLiteOpenHelper { |
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field.set(entity, new Date(cursor.getString(column))); |
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} else if (type == byte[].class) { |
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field.set(entity, cursor.getBlob(column)); |
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} else { |
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continue; |
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} else if (type == Map.class) { |
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field.set(entity, str2Map(cursor.getString(column))); |
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} else if (type == List.class) { |
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//主键字段
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String primaryKey = getPrimaryName(clazz); |
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if (TextUtils.isEmpty(primaryKey)) { |
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throw new IllegalArgumentException("List中的元素对象必须需要@Primary注解的字段"); |
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} |
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//list字段保存的数据
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String params = cursor.getString(column); |
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field.set(entity, findForeignData(db, primaryKey, params)); |
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} else if (isOneToOne(field)) { |
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String primaryKey = getPrimaryName(clazz); |
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if (TextUtils.isEmpty(primaryKey)) { |
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throw new IllegalArgumentException("@OneToOne的注解对象必须需要@Primary注解的字段"); |
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} |
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String params = cursor.getString(column); |
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field.set(entity, findForeignData(db, primaryKey, params).get(0)); |
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} |
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} |
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entity.rowID = cursor.getInt(cursor.getColumnIndex("rowid")); |
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@ -499,6 +624,50 @@ final class SqlHelper extends SQLiteOpenHelper { |
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return entitys; |
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} |
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/** |
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* 查找一对多、一对一的关联数据 |
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* |
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* @param primary 当前表的主键 |
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* @param childParams 当前表关联数据的类名 $$ 主键名 |
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*/ |
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private static <T extends DbEntity> List<T> findForeignData(SQLiteDatabase db, String primary, |
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String childParams) { |
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String[] params = childParams.split("$$"); |
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return findData(db, params[0], params[1] + "=?", primary); |
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} |
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/** |
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* 字符串转Map，只支持 |
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* <pre> |
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* {@code Map<String, String>} |
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* </pre> |
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*/ |
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private static Map<String, String> str2Map(String str) { |
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String[] element = str.split(","); |
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Map<String, String> map = new HashMap<>(); |
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for (String data : element) { |
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String[] s = data.split("$"); |
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map.put(s[0], s[1]); |
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} |
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return map; |
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} |
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/** |
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* Map转字符串，只支持 |
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* <pre> |
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* {@code Map<String, String>} |
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* </pre> |
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*/ |
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private static String map2Str(Map<String, String> map) { |
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StringBuilder sb = new StringBuilder(); |
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Set<String> keys = map.keySet(); |
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for (String key : keys) { |
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sb.append(key).append("$").append(map.get(key)).append(","); |
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} |
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String str = sb.toString(); |
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return TextUtils.isEmpty(str) ? str : str.substring(0, str.length() - 1); |
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} |
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private static void close(SQLiteDatabase db) { |
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//if (db != null && db.isOpen()) db.close();
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} |
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@ -523,4 +692,28 @@ final class SqlHelper extends SQLiteOpenHelper { |
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|| Modifier.isStatic(modifiers) |
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|| Modifier.isFinal(modifiers); |
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} |
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/** |
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* 判断是否一对多注解 |
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*/ |
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private static boolean isOneToMany(Field field) { |
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OneToMany oneToMany = field.getAnnotation(OneToMany.class); |
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return oneToMany != null; |
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} |
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/** |
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* 判断是否是一对一注解 |
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*/ |
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private static boolean isOneToOne(Field field) { |
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OneToOne oneToOne = field.getAnnotation(OneToOne.class); |
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return oneToOne != null; |
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} |
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/** |
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* 判断是否是主键 |
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*/ |
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private static boolean isPrimary(Field field) { |
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Primary pk = field.getAnnotation(Primary.class); |
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return pk != null; |
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} |
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} |
AriaLyy
7 years ago