/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache license, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.internna.iwebmvc.tags;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;
/**
* Returns a new identifier
*
* @author Jose Noheda
* @since 2.0
*/
public class Id extends SimpleTagSupport {
private String property;
public void setProperty(String property) {
this.property = property;
}
/**
* Generates and writes a unique (per page) identifier.
*/
@Override
public void doTag() throws JspException {
long id = Math.round(Math.random() * 1000000);
if (property != null) getJspContext().setAttribute(property, id);
else {
try {
JspWriter out = getJspContext().getOut();
out.print(id);
} catch (java.io.IOException ex) {
throw new JspException(ex.getMessage());
}
}
}
}