com.sun.faces.taglib.jsf_core.ConverterTag Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jsf-impl Show documentation
Show all versions of jsf-impl Show documentation
This is the master POM file for Sun's Implementation of
the JSF 1.2 Specification.
The newest version!
/*
* $Id: ConverterTag.java,v 1.9.4.2 2007/12/19 18:13:03 rlubke Exp $
*/
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.faces.taglib.jsf_core;
import com.sun.faces.util.MessageUtils;
import javax.el.ValueExpression;
import javax.faces.component.StateHolder;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import javax.servlet.jsp.JspException;
/**
* Basic implementation of ConverterELTag.
*/
public class ConverterTag extends AbstractConverterTag {
// --------------------------------------------- Methods from ConverterELTag
@Override
protected Converter createConverter() throws JspException {
if (converterId != null && converterId.isLiteralText()) {
return createConverter(converterId,
binding,
FacesContext.getCurrentInstance());
} else {
return new BindingConverter(converterId, binding);
}
}
// ----------------------------------------------------------- Inner Classes
public static class BindingConverter implements Converter, StateHolder {
ValueExpression converterId;
ValueExpression binding;
// -------------------------------------------------------- Constructors
/**
* This is only used during state restoration.
*/
public BindingConverter() {
}
public BindingConverter(ValueExpression converterId,
ValueExpression binding) {
this.converterId = converterId;
this.binding = binding;
}
// ---------------------------------------------- Methods From Converter
public Object getAsObject(FacesContext context, UIComponent component, String value) {
Converter delegate = getDelegate(context);
if (delegate != null) {
return delegate.getAsObject(context, component, value);
} else {
throw new ConverterException(
MessageUtils.getExceptionMessage(
MessageUtils.CANNOT_CONVERT_ID,
converterId != null ? converterId.getExpressionString() : "",
binding != null ? binding.getExpressionString() : ""));
}
}
public String getAsString(FacesContext context, UIComponent component, Object value) {
Converter delegate = getDelegate(context);
if (delegate != null) {
return delegate.getAsString(context, component, value);
} else {
throw new ConverterException(
MessageUtils.getExceptionMessage(
MessageUtils.CANNOT_CONVERT_ID,
converterId != null ? converterId.getExpressionString() : "",
binding != null ? binding.getExpressionString() : ""));
}
}
// -------------------------------------------- Methods from StateHolder
private Object[] state;
public Object saveState(FacesContext context) {
if (state == null) {
state = new Object[2];
}
state[0] = converterId;
state[1] = binding;
return state;
}
public void restoreState(FacesContext context, Object state) {
this.state = (Object[]) state;
if (this.state != null) {
this.converterId = (ValueExpression) this.state[0];
this.binding = (ValueExpression) this.state[1];
}
}
public boolean isTransient() {
return false;
}
public void setTransient(boolean newTransientValue) {
//no-op
}
// ----------------------------------------------------- Private Methods
private Converter getDelegate(FacesContext context) {
return createConverter(converterId, binding, context);
}
}
}