我需要将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、命名空间和其他选项。与此表相关，我需要有一个表entity_attributes该表将具有entity_id，attribute_name，attribute_type，必需等。
创建模式结构很容易，但是在数据库中插入我所有实体的所有字段将是一项繁琐的工作。有什么方法可以创建一个脚本来解析我所有的实体注释，允许我将所有字段创建到我的数据库表中？
最好的方法是编写一个类似于 doctrine：schema：update 的命令来更新我的表模式。
谢谢。
原则元数据类 http://www.doctrine-project.org/api/orm/2.2/source-class-Doctrine.ORM.Mapping.ClassMetadataInfo.html 包含一个公共属性，该属性可能正是您所需要的：
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();