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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace OCA\activity\Migrations;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Migrations\AbstractMigration;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Platforms\OraclePlatform;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Schema\Schema;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Types\Type;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Version20161122092159 extends AbstractMigration { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Schema $schema  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function up(Schema $schema) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$prefix = $this->connection->getPrefix();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$tableName = "{$prefix}activity"; | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ($this->connection->getDatabasePlatform() instanceof OraclePlatform) { | 
            
                            
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                			$tableName = $this->connection->quoteIdentifier($tableName);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->addSql("ALTER TABLE $tableName ADD (\"tmpsubjectparams\" CLOB, \"tmpmessageparams\" CLOB)"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->addSql("UPDATE $tableName SET \"tmpsubjectparams\"=\"subjectparams\", \"tmpmessageparams\"=\"messageparams\""); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->addSql("COMMIT"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->addSql("ALTER TABLE $tableName DROP COLUMN \"subjectparams\""); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->addSql("ALTER TABLE $tableName DROP COLUMN \"messageparams\""); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->addSql("ALTER TABLE $tableName RENAME COLUMN \"tmpsubjectparams\" TO \"subjectparams\""); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->addSql("ALTER TABLE $tableName RENAME COLUMN \"tmpmessageparams\" TO \"messageparams\""); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		} else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$table = $schema->getTable($tableName);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$table->changeColumn('app', ['length' => 32]); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$table->changeColumn('subjectparams', ['type' => Type::getType('text')]); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$table->changeColumn('messageparams', ['type' => Type::getType('text')]); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Schema $schema  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    public function down(Schema $schema) { | 
            
            
                                                        
            
                                    
            
            
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                		$prefix = $this->connection->getPrefix();  | 
            
            
                                                        
            
                                    
            
            
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                		$table = $schema->getTable("{$prefix}activity"); | 
            
            
                                                        
            
                                    
            
            
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                		$table->changeColumn('app', ['length' => 255]); | 
            
            
                                                        
            
                                    
            
            
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                		$table->changeColumn('subjectparams', ['type' => Type::getType('string'), 'length' => '4000']); | 
            
            
                                                        
            
                                    
            
            
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                		$table->changeColumn('messageparams', ['type' => Type::getType('string'), 'length' => '4000']); | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This error could be the result of:
1. Missing dependencies
PHP Analyzer uses your
composer.jsonfile (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects thecomposer.jsonto be in the root folder of your repository.Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the
requireorrequire-devsection?2. Missing use statement
PHP does not complain about undefined classes in
ìnstanceofchecks. For example, the following PHP code will work perfectly fine:If you have not tested against this specific condition, such errors might go unnoticed.