[
http://issues.apache.org/jira/browse/TAPESTRY-410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andreas Andreou reassigned TAPESTRY-410:
----------------------------------------
Assignee: Andreas Andreou
> IdentityValidator
> -----------------
>
> Key: TAPESTRY-410
> URL: http://issues.apache.org/jira/browse/TAPESTRY-410
> Project: Tapestry
> Issue Type: Improvement
> Components: Framework
> Affects Versions: 4.0
> Reporter: Ron Piterman
> Assigned To: Andreas Andreou
> Priority: Minor
> Fix For: 4.1.2
>
>
> The following class compares the validated field against another field. It
> works in two modes:
> match=<fieldname> and differ=<fieldname>
> Cheers,
> Ron
> package org.apache.tapestry.form.valid;
> import org.apache.tapestry.form.IFormComponent;
> import org.apache.tapestry.form.TextField;
> import org.apache.tapestry.form.ValidationMessages;
> import org.apache.tapestry.form.validator.BaseValidator;
> public class IdentityValidator extends BaseValidator {
> private String _fieldName;
> private int _matchType;
> private String _identityMessage;
>
> private static final int DIFFER = 0;
> private static final int MATCH = 1;
>
>
> public IdentityValidator() {
> super();
> }
> public IdentityValidator(String initializer)
> {
> super(initializer);
> }
> public String toString(IFormComponent field, Object value)
> {
> if (value == null)
> return null;
> return value.toString();
> }
> public void validate(IFormComponent field, ValidationMessages messages,
> Object object)
> throws ValidatorException
> {
> TextField referent =
>
> (TextField)field.getContainer().getComponent(_fieldName);
> //TODO: if component is null treat _fieldName as an ognl
> expression
>
> boolean notEq = notEqual ( referent.getValue() , object );
>
> if ( _matchType == MATCH ? notEq : !notEq )
> throw new ValidatorException(buildIdentityMessage(messages,
> field, referent),
> ValidationConstraint.CONSISTENCY);
> }
> public String getMatch()
> {
> return _fieldName;
> }
> public void setMatch(String field)
> {
> _fieldName = field;
> _matchType = MATCH;
>
> }
>
> public String getDiffer() {
> return _fieldName;
> }
>
> public void setDiffer(String field) {
> _fieldName = field;
> _matchType = DIFFER;
> }
>
> /** @since 3.0 */
> public String getIdentityMessage()
> {
> return _identityMessage;
> }
> /**
> * Overrides the <code>field-too-short</code> bundle key. Parameter
> {0} is the minimum length.
> * Parameter {1} is the display name of the field.
> *
> * @since 3.0
> */
> public void setMinimumLengthMessage(String string)
> {
> _identityMessage = string;
> }
> /** @since 3.0 */
> protected String buildIdentityMessage(ValidationMessages messages,
> IFormComponent field, IFormComponent referent)
> {
> Object[] parameters = new Object[] {
> field.getDisplayName(), _matchType,
> referent.getDisplayName()
> };
> return messages.formatValidationMessage(_identityMessage,
> "invalid-field-equality", parameters);
>
> }
>
> private boolean notEqual(Object o1, Object o2) {
> if (o1 == null && o2 == null)
> return false;
> if (o1 == null || o2 == null)
> return true;
> return !o1.equals(o2);
> }
> }
> ==============================
> hivemind:
> <contribution configuration-id="tapestry.form.validator.Validators">
> <validator name="match" configurable="true"
> class="org.apache.tapestry.form.valid.IdentityValidator"/>
> </contribution>
> <contribution configuration-id="tapestry.form.validator.Validators">
> <validator name="differ" configurable="true"
> class="org.apache.tapestry.form.valid.IdentityValidator"/>
> </contribution>
> =========================
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