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It takes the variable $primary_links, which is an array, and uses the foreach operator to go over the array one item at a time, pointing the variable $link to the current item For each primary link, an <li> element with the link s contents is printed Notice the endforeach tag, which is needed to close the foreach tag..

With some queries, we know the result will be only a single instance for example, if we want only the highest bid. In this case, we can read it from the result list by index: result.get(0) or setMaxResult(1). We then execute the query with the uniqueResult() method, because we know only one object will be returned:

The PHP code in template files rarely gets more complicated than this, and most of the time it will suffice if you can recognize which lines and bits belong together, so that you can copy and paste them without introducing errors.

Summary

Bid maxBid = (Bid) session.createQuery("from Bid b order by b.amount desc") .setMaxResults(1) .uniqueResult(); Bid bid = (Bid) session.createCriteria(Bid.class) .add( Expression.eq("id", id) ) .uniqueResult();

W. Jason Gilmore (Apress, 2004).

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If the query returns more than one object, an exception will be thrown. The Query and Session interfaces also provide the iterate() method, which returns the same result as list() (or find()) but uses a different strategy for retrieving the results. When you use iterate() to execute a query, Hibernate retrieves only the primary key (identifier) values in the first SQL select; it tries to find the rest of the state of the objects in the cache, before querying again for the rest of the property values. This technique can be used to optimize loading in specific cases, as discussed in section 7.6, Optimizing object retrieval.

Template files are the meeting place of static content (HTML) and dynamic values (variables), as well as minimal logic, similar to the examples shown in the previous section, to account for the numerous variations that are possible in a dynamic site. While there are many approaches and philosophies for templating in general, PHPTemplate has evolved in a way that encourages simple and minimal logic. It uses variables that are pushed into the template from the theme engine. Each template will have a number of variables available to it that are provided by the theme engine. In addition to the variables that are unique to each template, the variables $id and $zebra are always included by PHPTemplate, no matter which template is being called. These variables work as follows: $id: A sequential counter that is incremented every time the template is rendered. In the case of blocks, for example, it allows each block to have a unique ID on the page. $zebra: An alternating counter that has the value odd or even. This is useful for giving table rows alternating colors, for example. Furthermore, the variable $is_front is also available. It is true whenever the front page is being displayed, so you can always write template code like this: < php if ($is_front) : > -- display when on front page -- < php endif; >

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