通过doctrine

通过doctrine

关注
发信
关注(28)粉丝(399)

Symfony2 Doctrine2 - 通过doctrine从现有数据库生成一对多注释：mapping：import

本文介绍了Symfony2 Doctrine2 - 通过doctrine从现有数据库生成一对多注释：mapping：import的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想使用Doctrine工具从现有数据库中生成实体，用于逆向工程

  / * 
 * SET FOREIGN_KEY_CHECKS = 0; 
  -  ---------------------------- 
  - `country` $的表结构
 -  ---------------------------- 
 DROP TABLE IF EXISTS`country`; 
 CREATE TABLE`country`（
`id` int（11）unsigned NOT NULL AUTO_INCREMENT，
`name` varchar（255）NOT NULL DEFAULT''，
 PRIMARY KEY `id`）
）ENGINE = InnoDB AUTO_INCREMENT = 38 DEFAULT CHARSET = utf8; 
 
 
  -  ---------------------------- 
  - 表结构对于`provider` 
  -  ---------------------------- 
 DROP TABLE IF EXISTS`provider`; 
 CREATE TABLE`provider`（
`id` int（11）unsigned NOT NULL AUTO_INCREMENT，
`name` varchar（255）NOT NULL DEFAULT''，
 PRIMARY KEY `id`）
）ENGINE = InnoDB AUTO_INCREMENT = 13 DEFAULT CHARSET = utf8; 
 
  -  ---------------------------- 
  - `provider_country`的表结构
  -  ---------------------------- 
 DROP TABLE IF EXISTS`provider_country`; 
 CREATE TABLE`provider_country`（
`id` int（11）unsigned NOT NULL AUTO_INCREMENT，
`providerId` int（11）unsigned NOT NULL，
`countryId` int 11）unsigned NOT NULL，
 PRIMARY KEY（`id`），
 KEY`fk_provider_has_id0_idx`（`providerId`），
 KEY`fk_user_country_idx`（`countryId`），
 CONSTRAINT`fk_rss_has_id` FOREIGN KEY（`providerId`）引用```````````````````` id`）ON删除没有操作更新无操作
）ENGINE = InnoDB AUTO_INCREMENT = 8 DEFAULT CHARSET = utf8; 
 
 SET FOREIGN_KEY_CHECKS = 1; 
 * /

您可以要求Doctrine导入模式并构建相关的实体类以下两个命令。



1 $ php app / console doctrine：mapping：import AcmeBlogBu​​ndle annotation

2 $ php app / console doctrine：generate：entities AcmeBlogBu​​ndle



但现在doctrine只检测ManyToOne在许多方面只有ProviderCountry表中的关系



如果我需要添加OneToMany关系，我必须通过添加下面的注释添加注释



在Provider.php中添加

  / ** 
 * @ORM \OneToMany（targetEntity =ProviderCountry，mappedBy =providerId，cascade = {persist}）
 * / 
 private $ datas;

在ProviderCountry.php中添加

  / ** 
 * @var提供程序
 * 
 * @ ORM\ManyToOne（targetEntity =Provider，inversedBy =datas）
 * @ ORM \JoinColumn（name =providerId，referencedColumnName =id）
 * / 
 
 private $ userid;

那么如何通过doctrine命令来生成一对多注释

解决方案

只要这是在doctrine orm lib内的变化，



/ p>

vendor / doctrine / orm / lib / Doctrine / ORM / Mapping / Driver / DatabaseDriver.php



以下语句

  foreach（$ foreignKeys as $ foreignKey）{
 $ foreignTable = $ foreignKey-> getForeignTableName ; 
 $ cols = $ foreignKey-> getColumns（）; 
 $ fkCols = $ foreignKey-> getForeignColumns（）; 
 
 $ localColumn = current（$ cols）; 
 $ associationMapping = array（）; 
 $ associationMapping ['fieldName'] = $ this-> getFieldNameForColumn（$ tableName，$ localColumn，true）; 
 $ associationMapping ['targetEntity'] = $ this-> getClassNameForTable（$ foreignTable）; 
 
 if（$ primaryKeyColumns&& in_array（$ localColumn，$ primaryKeyColumns））{
 $ associationMapping ['id'] = true; 
} 
 
 for（$ i = 0; $ i< count（$ cols）; $ i ++）{
 $ associationMapping ['joinColumns'] [] = array 
'name'=> $ cols [$ i]，
'referencedColumnName'=> $ fkCols [$ i]，
）; 
} 
 
 //这里我们需要检查$ cols是否和$ primaryKeyColums一样
 if（！array_diff（$ cols，$ primaryKeyColumns））{
 $ metadata-> mapOneToOne（$ associationMapping）; 
} else {
 $ metadata-> mapManyToOne（$ associationMapping）; 
} 
}

更改为

  foreach（$ foreignKeys as $ foreignKey）{
 $ foreignTable = $ foreignKey-> getForeignTableName（）; 
 $ cols = $ foreignKey-> getColumns（）; 
 $ fkCols = $ foreignKey-> getForeignColumns（）; 
 
 $ localColumn = current（$ cols）; 
 $ associationMapping = array（）; 
 $ associationMapping ['fieldName'] = $ this-> getFieldNameForColumn（$ tableName，$ localColumn，true）; 
 $ associationMapping ['targetEntity'] = $ this-> getClassNameForTable（$ foreignTable）; 
 
 for（$ i = 0; $ i< count（$ cols）; $ i ++）{
 $ associationMapping ['joinColumns'] [ name'=> $ cols [$ i]，
'referencedColumnName'=> $ fkCols [$ i]，
）; 
} 
 $ metadata-> mapManyToOne（$ associationMapping）; 
} 
 
 foreach（$ this-> tables as $ tableCandidate）{
 if（$ this-> _sm-> getDatabasePlatform（） - > supportsForeignKeyConstraints ）{
 $ foreignKeysCandidate = $ tableCandidate-> getForeignKeys（）; 
} else {
 $ foreignKeysCandidate = array（）; 
} 
 
 foreach（$ foreignKeysCandidate as $ foreignKey）{
 $ foreignTable = $ foreignKey-> getForeignTableName（）; 
 
 if（$ foreignTable == $ tableName&&！isset（$ this-> manyToManyTables [$ tableCandidate-> getName（）]））{
 
 $ fkCols = $ foreignKey-> getForeignColumns（）; 
 $ cols = $ foreignKey-> getColumns（）; 
 
 
 $ localColumn = current（$ cols）; 
 
 $ associationMapping = array（）; 
 $ associationMapping ['fieldName'] = $ this-> getFieldNameForColumn（$ tableCandidate-> getName（），$ tableCandidate-> getName（），true）; 
 $ associationMapping ['targetEntity'] = $ this-> getClassNameForTable（$ tableCandidate-> getName（））; 
 $ associationMapping ['mappedBy'] = $ this-> getFieldNameForColumn（$ tableCandidate-> getName（），$ localColumn，true）; 
 
 try {
 $ primaryKeyColumns = $ tableCandidate-> getPrimaryKey（） - > getColumns（）; 
 if（count（$ primaryKeyColumns）== 1）{
 $ indexColumn = current（$ primaryKeyColumns）; 
 $ associationMapping ['indexBy'] = $ indexColumn; 
} 
} catch（SchemaException $ e）{
 
} 
 
 $ metadata-> mapOneToMany（$ associationMapping）; 
} 
} 
}



现在如果你运行doctrine：映射：import



您将找到OneToMany注释。



然后运行doctrine：generate：entities



您会发现两侧的单向关系。


I want to generate Entities from an Existing Database by using Doctrine tools for reverse engineering

/*
 * SET FOREIGN_KEY_CHECKS=0;
  -- ----------------------------
  -- Table structure for `country`
  -- ----------------------------
  DROP TABLE IF EXISTS `country`;
  CREATE TABLE `country` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL DEFAULT '',
  PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=38 DEFAULT CHARSET=utf8;


  -- ----------------------------
  -- Table structure for `provider`
  -- ----------------------------
  DROP TABLE IF EXISTS `provider`;
  CREATE TABLE `provider` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL DEFAULT '',
  PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=utf8;

  -- ----------------------------
  -- Table structure for `provider_country`
  -- ----------------------------
  DROP TABLE IF EXISTS `provider_country`;
  CREATE TABLE `provider_country` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `providerId` int(11) unsigned NOT NULL,
  `countryId` int(11) unsigned NOT NULL,
  PRIMARY KEY (`id`),
  KEY `fk_provider_has_id0_idx` (`providerId`),
  KEY `fk_user_country_idx` (`countryId`),
  CONSTRAINT `fk_rss_has_id` FOREIGN KEY (`providerId`) REFERENCES `provider` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `fk_user_country` FOREIGN KEY (`countryId`) REFERENCES `country` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
  ) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;

  SET FOREIGN_KEY_CHECKS=1;
 */

you can ask Doctrine to import the schema and build related entity classes by executing the following two commands.

1 $ php app/console doctrine:mapping:import AcmeBlogBundle annotation
2 $ php app/console doctrine:generate:entities AcmeBlogBundle

but now the doctrine detect only ManyToOne relation in many side only "ProviderCountry" table

if i need to add the OneToMany relation i have to add the annotation by my hand by adding the follwing annotation

in Provider.php add

/**
 * @ORM\OneToMany(targetEntity="ProviderCountry", mappedBy="providerId", cascade={"persist"})
 */
private $datas;

in ProviderCountry.php add

    /**
     * @var Provider
     *
     * @ORM\ManyToOne(targetEntity="Provider", inversedBy = "datas")
     * @ORM\JoinColumn(name="providerId", referencedColumnName="id")
     */

private $userid;

so how can I genrate One-To-Many annotation by doctrine command

解决方案

Simply this is change inside doctrine orm lib,

you can fix that by changes in

vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/Driver/DatabaseDriver.php

replace the following statements

foreach ($foreignKeys as $foreignKey) {
          $foreignTable = $foreignKey->getForeignTableName();
          $cols = $foreignKey->getColumns();
          $fkCols = $foreignKey->getForeignColumns();

          $localColumn = current($cols);
          $associationMapping = array();
          $associationMapping['fieldName'] = $this->getFieldNameForColumn($tableName, $localColumn, true);
          $associationMapping['targetEntity'] = $this->getClassNameForTable($foreignTable);

          if ($primaryKeyColumns && in_array($localColumn, $primaryKeyColumns)) {
          $associationMapping['id'] = true;
          }

          for ($i = 0; $i < count($cols); $i++) {
          $associationMapping['joinColumns'][] = array(
          'name' => $cols[$i],
          'referencedColumnName' => $fkCols[$i],
          );
          }

          //Here we need to check if $cols are the same as $primaryKeyColums
          if (!array_diff($cols, $primaryKeyColumns)) {
          $metadata->mapOneToOne($associationMapping);
          } else {
          $metadata->mapManyToOne($associationMapping);
          }
          }

change to 

foreach ($foreignKeys as $foreignKey) {
            $foreignTable = $foreignKey->getForeignTableName();
            $cols = $foreignKey->getColumns();
            $fkCols = $foreignKey->getForeignColumns();

            $localColumn = current($cols);
            $associationMapping = array();
            $associationMapping['fieldName'] = $this->getFieldNameForColumn($tableName, $localColumn, true);
            $associationMapping['targetEntity'] = $this->getClassNameForTable($foreignTable);

            for ($i = 0; $i < count($cols); $i++) {
                $associationMapping['joinColumns'][] = array(
                    'name' => $cols[$i],
                    'referencedColumnName' => $fkCols[$i],
                );
            }
            $metadata->mapManyToOne($associationMapping);
        }

        foreach ($this->tables as $tableCandidate) {
            if ($this->_sm->getDatabasePlatform()->supportsForeignKeyConstraints()) {
                $foreignKeysCandidate = $tableCandidate->getForeignKeys();
            } else {
                $foreignKeysCandidate = array();
            }

            foreach ($foreignKeysCandidate as $foreignKey) {
                $foreignTable = $foreignKey->getForeignTableName();

                if ($foreignTable == $tableName && !isset($this->manyToManyTables[$tableCandidate->getName()])) {

                    $fkCols = $foreignKey->getForeignColumns();
                    $cols = $foreignKey->getColumns();


                    $localColumn = current($cols);

                    $associationMapping = array();
                    $associationMapping['fieldName'] = $this->getFieldNameForColumn($tableCandidate->getName(), $tableCandidate->getName(), true);
                    $associationMapping['targetEntity'] = $this->getClassNameForTable($tableCandidate->getName());
                    $associationMapping['mappedBy'] = $this->getFieldNameForColumn($tableCandidate->getName(), $localColumn, true);

                    try {
                        $primaryKeyColumns = $tableCandidate->getPrimaryKey()->getColumns();
                        if (count($primaryKeyColumns) == 1) {
                            $indexColumn = current($primaryKeyColumns);
                            $associationMapping['indexBy'] = $indexColumn;
                        }
                    } catch (SchemaException $e) {

                    }

                    $metadata->mapOneToMany($associationMapping);
                }
            }
        }

now if you run doctrine:mapping:import

you will find OneToMany annotation.

then run doctrine:generate:entities

you will find A unidirectional relationship on both sides.

这篇关于Symfony2 Doctrine2 - 通过doctrine从现有数据库生成一对多注释：mapping：import的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

09-05 04:01
Powered by LMLPHP ©2024 通过doctrine 0.052080