bean-checker

What is it?

Bean checker is a Java library which helps to check that all properties of a Java bean have been set (no matter if they were set to not-null or null values).

For instance, imagine this bean:

public class SimpleBean {
	private Date date;
	private String author;
	private String body;

	public Date getDate() {
		return date;
	}

	public void setDate(Date date) {
		this.date = date;
	}

	public String getAuthor() {
		return author;
	}

	public void setAuthor(String author) {
		this.author = author;
	}

	public String getBody() {
		return body;
	}

	public void setBody(String body) {
		this.body = body;
	}

}

And the calling code:

SimpleBean messageBean = new SimpleBean();

messageBean.setAuthor("vlad");
messageBean.setDate(new Date());

You see above that the developer forgot to call the setBody() setter.

You can avoid situations like these by using this library, like this:

BeanChecker<SimpleBean> beanChecker = BeanCheckerFactory.createBeanChecker(SimpleBean.class);
SimpleBean messageBean = beanChecker.getBeanProxy();

messageBean.setAuthor("vlad");
messageBean.setDate(new Date());

beanChecker.mandatorySettersCalled(); // this will throw an exception if not all setters were called

Maven

Maven dependency (no repository section needed, artifact is on maven central):

<dependency>
	<groupId>com.github.vlad2</groupId>
	<artifactId>bean-checker</artifactId>
	<version>1.0.5</version>
</dependency>