Expressive Design (in 20 minutes)

Expressive Design (in 20 minutes) phillip calçado http://fragmental.tw

javamail usage

I want this CSV report delivered as an e-mail attachment

1st Try

public class Mail { public void sendEmailWithCsvFile(String from, String to, String subject, String body, List<String> csvFileLines) { Properties props = new Properties(); props.put(quot;mail.smtp.hostquot;, quot;localhostquot;); Session session = Session.getDefaultInstance(props); MimeMessage msg = new MimeMessage(session); msg.setFrom(new InternetAddress(from)); InternetAddress[] address = { new InternetAddress(to) }; msg.setRecipients(Message.RecipientType.TO, address); msg.setSubject(subject); msg.setSentDate(new Date()); MimeBodyPart part1 = new MimeBodyPart(); part1.setText(body); MimeBodyPart part2 = new MimeBodyPart(); StringBuffer buffer = new StringBuffer(); for (String line : csvFileLines) buffer.append(line + quot;nquot;); part2.setContent(buffer.toString(), quot;text/csvquot;); part2.setFileName(quot;file.csvquot;); Multipart mp = new MimeMultipart(); mp.addBodyPart(part1); mp.addBodyPart(part2); msg.setContent(mp); Transport.send(msg); } }

Message.RecipientType I want this CSV report delivered InternetAddress Multipart as an e-mail attachment MimeMessage MimeBodyPart Session Properties

2nd Try

public class Mail { public void sendEmailWithCsvFile(String from, String to, String subject, String body, List<String> csvFileLines) { Properties props = new Properties(); props.put(quot;mail.smtp.hostquot;, quot;localhostquot;); MailService mailService = new MailService(props); MailMessage message = mailService.newMessage(); message.setFrom(from); message.setTo(to); message.setSubject(subject); message.setBody(body); StringBuffer buffer = new StringBuffer(); for (String line : csvFileLines) buffer.append(line + quot;nquot;); Attachment csvFile = new Attachment(quot;file.csvquot;, buffer.toString()); message.attach(csvFile); mailService.send(message); } }

I want this CSV MailMessage Attachment report delivered as an e-mail MailService Properties attachment

3rd Try

public class Mail { public void sendEmailWithCsvFile(String from, String to, String subject, String body, List<String> csvFileLines) { StringBuffer buffer = new StringBuffer(); for (String line : csvFileLines) buffer.append(line + quot;nquot;); Properties props = new Properties(); props.put(quot;mail.smtp.hostquot;, quot;localhostquot;); MailService mailService = new MailService(props); mailService.newMessage() .from(from) .to(to) .subject(subject) .body(body) .attachTextFile(quot;file3.csvquot;, buffer.toString()) .send(); } }

send_email do to 'pcalcado@gmail.com' from 'bemaia@fragmental.tw' subject 'Testing via Ruby' body %{ Hi, Please do not forget the milk. Bye! } attachment('file4.csv') << lines end

I want this CSV E-mail report delivered as an e-mail Attachment attachment

what just happened?

Noise Reduction

Noise the difference between I want this CSV E-mail report delivered as an e-mail Attachment attachment

Noise the difference between I want this CSV E-mail report delivered This as an e-mail Attachment attachment

Noise the difference between I want this CSV E-mail report delivered This That as an e-mail Attachment attachment

Noise the difference between Business Analysis Design Implementation public class Something{ Class Name Class Name Attribute Attribute Attribute Attribute private String name; Operation Operation Operation Operation public boolean doS(){ } Class Name Attribute } Attribute Operation Operation This That

the goal

I want this CSV report delivered as an e-mail attachment

I want this CSV report delivered as an e-mail E-mail attachment

I want this CSV report delivered as an e-mailE-mail attachment Attachment

the techniques

Noise Idiomatic” Java Domain-Driven Design Internal DSL External DSL?

“Idiomatic”: Focus on how to use technical tools to solve the problem in an efficient way. Domain-Driven: Language is only a tool to model the domain. Internal DSL: Language is only an :internal { extensible tool to model the DSL domain. } External DSL: Language is created based on the domain.

“Idiomatic”: TFocus on how to use DO: a O e e d r n am technical toolsr thato solve the Ne te be t t fo problem in an efficient way. Domain-Driven: Language is only a tool to model the domain. Internal DSL: Language is only an :internal { extensible tool to model the DSL domain. } External DSL: Language is created based on the domain.

Thanks http://fragmental.tw

pics • http://www.flickr.com/photos/bitzi/293673587/ • http://www.flickr.com/photos/sage/2143086954/ • http://www.flickr.com/photos/brianmitchell/2113553867/ • http://www.flickr.com/photos/kamaski/186266747/ • http://www.flickr.com/photos/tosawyer/43691981/ • http://www.flickr.com/photos/helderfontenele/2134684620/ • http://www.flickr.com/photos/sotto1/808195510/

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Expressive Design (in 20 minutes)

by Phil Calçado on Mar 09, 2009

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Expressive Design (in 20 minutes) — Presentation Transcript