Symfony2在数据库表中存储数据库模式信息

Question

我需要将我的数据库模式信息存储在数据库中。 我已经有一个名为db_entity的表，它存储实体名称，名称空间和其他选项。 与此表相关我需要一个表entity_attributes，它具有entity_id，attribute_name，attribute_type，required等。

创建模式结构很简单，但将所有实体中的所有字段插入到数据库中将是一个单调乏味的工作。 有什么办法可以创建一个脚本来解析我的所有实体注释，允许我创建所有字段到我的数据库表中？

最好的办法是写一个类似的命令来教条：架构：更新将更新我的表架构。

谢谢。

Answer 1

学说元数据类http://www.doctrine-project.org/api/orm/2.2/source-class-Doctrine.ORM.Mapping.ClassMetadataInfo.html包含了公共财产，可能正是你需要的东西：

222:  /** 
223:  * READ-ONLY: The field mappings of the class. 
224:  * Keys are field names and values are mapping definitions. 
225:  * 
226:  * The mapping definition array has the following values: 
227:  * 
228:  * - <b>fieldName</b> (string) 
229:  * The name of the field in the Entity. 
230:  * 
231:  * - <b>type</b> (string) 
232:  * The type name of the mapped field. Can be one of Doctrine's mapping types 
233:  * or a custom mapping type. 
234:  * 
235:  * - <b>columnName</b> (string, optional) 
236:  * The column name. Optional. Defaults to the field name. 
237:  * 
238:  * - <b>length</b> (integer, optional) 
239:  * The database length of the column. Optional. Default value taken from 
240:  * the type. 
241:  * 
242:  * - <b>id</b> (boolean, optional) 
243:  * Marks the field as the primary key of the entity. Multiple fields of an 
244:  * entity can have the id attribute, forming a composite key. 
245:  * 
246:  * - <b>nullable</b> (boolean, optional) 
247:  * Whether the column is nullable. Defaults to FALSE. 
248:  * 
249:  * - <b>columnDefinition</b> (string, optional, schema-only) 
250:  * The SQL fragment that is used when generating the DDL for the column. 
251:  * 
252:  * - <b>precision</b> (integer, optional, schema-only) 
253:  * The precision of a decimal column. Only valid if the column type is decimal. 
254:  * 
255:  * - <b>scale</b> (integer, optional, schema-only) 
256:  * The scale of a decimal column. Only valid if the column type is decimal. 
257:  * 
258:  * - <b>unique (string, optional, schema-only)</b> 
259:  * Whether a unique constraint should be generated for the column. 
260:  * 
261:  * @var array 
262:  */ 
263:  public $fieldMappings = array();