Deployment and Configuration

SessionFactory and datasources

Jeg (Erik) pleier vanligvis å konfigurere org.springframework.orm.hibernate3.LocalSessionFactoryBean med en referanse til en dataSource.
Ved å bytte av database må man da endre både dataSource- og sessionFactory-bønnen. Det er litt kjipt.

Går det an å
a) la være å spesifisere hibernate.dialect i hibernateProperties i sessionFactory eller

b) spesifisere hibernate.dialect i dataSource-bønnen?

Some statistics as motivation: http://www.dancres.org/blitzblog/2008/08/14/vital-statistics/

Fra Totto:

"5. Jo tidligere man starter på 1-4, desto billigere er det."

Denne infoen kan være nyttig:

A couple of false economies software development indulges in:

1. It's quicker for me to write the code than explain the design to someone else.
2. Automated deployment will have to wait until we have more time.
3. Automated Testing is too expensive at the moment, we'll add it in later if there are any problems
4. It's all about code - we don't need a stinkin' architecture.

Number one costs a software development team in a number of ways:

• The career development of other members of the team is slowed - if one never discusses design how does one expect to obtain good designers or architects?
• The team's development capacity is reduced - essentially projects bottleneck around the uncommunicative heroic individual.
• The team's effectiveness is reduced - project load cannot be divided efficiently because individuals have skills in narrow areas limiting the breadth of work they can perform.
• Team morale is damaged with other developers feeling left out, unfulfilled and unable to influence project decisions

Number two yields costs including:

• We save on some development time but the cost is re-surfacing in staff-hours required to perform the deployment.
• An increasing number of mistakes that extend deployment time or breaks releases.
• We save development time once and pay the price for that saved time with each and every deployment.
• The cost of each successive deployment increases because the system's size is growing.
• As each deployment takes ever longer, the gap between releases is likely to increase.