org.metawidget.inspector.jsp.UiJspAttribute Maven / Gradle / Ivy
// Metawidget
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package org.metawidget.inspector.jsp;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Annotates an arbitrary Metawidget attribute, based on a Java Server Pages EL expression.
*
* This annotation can only be used with JSP 2.0. When using this annotation, the
* PageContext must be injected before each inspection using
* JspAnnotationInspector.setThreadLocalPageContext.
* org.metawidget.jsp.tagext.MetawidgetTag does this automatically.
*
* @author Richard Kennard
*/
@Retention( RetentionPolicy.RUNTIME )
@Target( { ElementType.FIELD, ElementType.METHOD } )
public @interface UiJspAttribute {
/**
* Attribute to set.
*
* Multiple attributes can be specified if you need to set multiple attributes to the same
* expression.
*/
String[] name();
/**
* Value to set the attribute to. Must be an EL expression of the form ${...}.
*
* Note EL expressions can include conditions. For example:
*
* ${foo.bar ? 'baz' : null}.
*/
String expression();
}