/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jsp;
import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import javax.enterprise.inject.spi.Bean;
import com.caucho.config.el.CandiExpr;
import com.caucho.config.inject.InjectManager;
import com.caucho.config.inject.InjectManager.ReferenceFactory;
import com.caucho.el.Expr;
import com.caucho.el.MethodExpressionImpl;
import com.caucho.inject.Module;
import com.caucho.jsp.el.JspApplicationContextImpl;
import com.caucho.jsp.el.JspELParser;
@Module
public class JspUtil
{
public static ValueExpression createValueExpression(ELContext elContext,
Class<?> type,
String exprString)
{
JspApplicationContextImpl jspContext
= JspApplicationContextImpl.getCurrent();
ExpressionFactory factory = jspContext.getExpressionFactory();
return factory.createValueExpression(elContext,
exprString,
type);
}
public static Expr createExpr(ELContext elContext,
String exprString)
{
JspELParser parser = new JspELParser(elContext, exprString);
return new CandiExpr(parser.parse());
}
public static <T> ReferenceFactory<T> getInjectFactory(Class<T> cl)
{
InjectManager cdiManager = InjectManager.create();
Bean<T> bean = cdiManager.createManagedBean(cl);
return cdiManager.getReferenceFactory(bean);
}
public static MethodExpression createMethodExpression(ELContext elContext,
String exprString,
Class<?> type,
Class<?> []args)
{
JspELParser parser = new JspELParser(elContext, exprString);
Expr expr = parser.parse();
return new MethodExpressionImpl(expr, exprString, type, args);
}
}