Primitives Translators

Tapestry's built-in translators also translate primitive types, eg. byte, short, int, etc; but because primitives cannot be null:

0

0

0

0

0.0

0.0

References: Translator, translator package, TextField, PasswordField, TextArea.

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!-- We need a doctype to allow us to use special characters like &nbsp; 
     We use a "strict" DTD to make IE follow the alignment rules. -->
     
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_4.xsd">
<body class="container">
    <h3>Primitives Translators</h3>
    Tapestry's built-in translators also translate primitive types, eg. byte, short, int, etc; but because primitives cannot be null:
    <ul>
        <li>the default output will be <em>0</em>.</li>
        <li>the field will attract cursor focus.</li>
        <li>you will be <em>required</em> to input a value.</li>
    </ul>
    
    <div class="eg">
        <t:form class="form-horizontal" t:id="inputs">
            <div class="form-group">
                <t:label for="byteValue" class="col-sm-2"/>
                <div class="col-sm-2">
                    <t:textfield t:id="byteValue"/>
                </div>
                <div class="col-sm-2">
                    <p class="form-control-static">${byteValue}</p>
                </div>
            </div>
            <div class="form-group">
                <t:label for="shortValue" class="col-sm-2"/>
                <div class="col-sm-2">
                    <t:textfield t:id="shortValue"/>
                </div>
                <div class="col-sm-2">
                    <p class="form-control-static">${shortValue}</p>
                </div>
            </div>
            <div class="form-group">
                <t:label for="integerValue" class="col-sm-2"/>
                <div class="col-sm-2">
                    <t:textfield t:id="integerValue"/>
                </div>
                <div class="col-sm-2">
                    <p class="form-control-static">${integerValue}</p>
                </div>
            </div>
            <div class="form-group">
                <t:label for="longValue" class="col-sm-2"/>
                <div class="col-sm-2">
                    <t:textfield t:id="longValue"/>
                </div>
                <div class="col-sm-2">
                    <p class="form-control-static">${longValue}</p>
                </div>
            </div>
            <div class="form-group">
                <t:label for="floatValue" class="col-sm-2"/>
                <div class="col-sm-2">
                    <t:textfield t:id="floatValue"/>
                </div>
                <div class="col-sm-2">
                    <p class="form-control-static">${floatValue}</p>
                </div>
            </div>
            <div class="form-group">
                <t:label for="doubleValue" class="col-sm-2"/>
                <div class="col-sm-2">
                    <t:textfield t:id="doubleValue"/>
                </div>
                <div class="col-sm-2">
                    <p class="form-control-static">${doubleValue}</p>
                </div>
            </div>
            <div class="form-group">
                <div class="col-sm-2 col-sm-offset-2">
                    <t:submit/>
                </div>
            </div>
        </t:form>
    </div>
    
    References: 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/Translator.html">Translator</a>, 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/internal/translator/package-summary.html">translator package</a>, 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/corelib/components/TextField.html">TextField</a>, 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/corelib/components/PasswordField.html">PasswordField</a>, 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/corelib/components/TextArea.html">TextArea</a>.
    <br/><br/>

    <t:pagelink page="Index">Home</t:pagelink><br/><br/>
        
    <t:tabgroup>
        <t:sourcecodetab src="/web/src/main/java/jumpstart/web/pages/examples/input/PrimitivesTranslators.tml"/>
        <t:sourcecodetab src="/web/src/main/java/jumpstart/web/pages/examples/input/PrimitivesTranslators.java"/>
        <t:sourcecodetab src="/web/src/main/resources/META-INF/assets/css/examples/plain.css"/>
    </t:tabgroup>
</body>
</html>



package jumpstart.web.pages.examples.input;

import org.apache.tapestry5.PersistenceConstants;
import org.apache.tapestry5.annotations.Import;
import org.apache.tapestry5.annotations.Persist;
import org.apache.tapestry5.annotations.Property;

@Import(stylesheet="css/examples/plain.css")
public class PrimitivesTranslators {

    // Screen fields

    @Property
    @Persist(PersistenceConstants.FLASH)
    private byte byteValue;

    @Property
    @Persist(PersistenceConstants.FLASH)
    private short shortValue;

    @Property
    @Persist(PersistenceConstants.FLASH)
    private int integerValue;

    @Property
    @Persist(PersistenceConstants.FLASH)
    private long longValue;

    @Property
    @Persist(PersistenceConstants.FLASH)
    private float floatValue;

    @Property
    @Persist(PersistenceConstants.FLASH)
    private double doubleValue;

}



.eg {
                margin: 20px 0;
                padding: 14px;
                border: 1px solid #ddd;
                border-radius: 6px;
                -webkit-border-radius: 6px;
                -mox-border-radius: 6px;
}