package com.dao.genericdao.dialect;
import org.hibernate.dialect.MySQL5InnoDBDialect;
import org.hibernate.internal.util.StringHelper;
public class MySQLDialectWithoutFK extends MySQL5InnoDBDialect{
@Override
public String getAddForeignKeyConstraintString(
String constraintName,
String[] foreignKey,
String referencedTable,
String[] primaryKey,
boolean referencesPrimaryKey) {
final String cols = StringHelper.join( ", ", foreignKey );
// 设置foreignkey对应的列值可以为空
return " ALTER "+ cols +" SET DEFAULT NULL " ;
}
}
