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POBuilding a Tree with MYSQL on Web
 

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  1. POBuilding a Tree with MYSQL on Web
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    <p>I am trying with JSF + Primefaces to use a list of data that I retrieve from MySQL to build a Tree widget. My problem being that I don't know how make the Tree.</p> <p>I have this data in my MySQL as an example:</p> <pre> id | name | class_id | fl_id ----------------------------------------------- 1 | MARKETING | 0 | 1 2 | COMMERCIAL | 0 | 1 3 | TRADE-MARKETING | 1 | 1 4 | SALES | 1 | 1 5 | RICHARD | 1 | 2 6 | ROGER | 1 | 3 7 | MARIA | 2 | 4 </pre> <p>Which should result in a tree display similar to:</p> <pre> MARKETING >TRADE MARKETING >RICHARD >>ROGER COMMERCIAL >SALES MARIA </pre> <p>As you notice, from the class id, the parent are 0 and the child are 1 (Which I observe is usually null for the father, but I can't change my database).</p> <p>What I have coded so far is similar to this:</p> <pre><code>// Connection with MySQL, get result set, put all the data in my list and use a loop // to count on that list. Then use an "if" condition to tell if 1 or 0, as child or // father for(count = 0, cont &lt; rs.getString("class id").size(); count++) if(rs.getInt("class id") == 1) { } else if(rs.getInt("class id") == 2) { } } // Basically is wrong, because I can't tell what is the end, or leaf. </code></pre> <p>Basically its code that Ive conceptualized but not fully tested yet. I could post all the code, but I can't log in at work (somehow blocks it).</p> <p>I've researched every page on Google I could find to find out how to do this, but it's pretty confusing how to make a tree with MySQL, by far static display is much simpler (from example on Primefaces). I am just a beginner in Java.</p>
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    1. PTQuestion
    1. USBalusC
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    1. CONo spaces in column names AFAIK, class id is not valid identifier.
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      1. USkosa
    2. COi know, it's just view of my table
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    3. COHow deep will the tree go?
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      1. USethrbunny
 

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