[jboss-cvs] jboss-seam/src/main/org/jboss/seam/jsf ...

[Shane Bryzak]

  User: sbryzak2
  Date: 07/01/13 00:36:06

  Added:       src/main/org/jboss/seam/jsf  SeamELFunctionMapper.java
  Log:
  simple support for Seam EL functions with the unified EL
  
  Revision  Changes    Path
  1.1      date: 2007/01/13 05:36:06;  author: sbryzak2;  state: Exp;jboss-seam/src/main/org/jboss/seam/jsf/SeamELFunctionMapper.java
  
  Index: SeamELFunctionMapper.java
  ===================================================================
  package org.jboss.seam.jsf;
  
  import java.lang.reflect.Method;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.jboss.seam.log.LogProvider;
  import org.jboss.seam.log.Logging;
  import org.jboss.seam.security.SeamSecurityManager;
  
  import com.sun.el.lang.FunctionMapperImpl;
  
  /**
   * Resolves Seam EL functions to their corresponding methods.
   *  
   * @author Shane Bryzak
   */
  public class SeamELFunctionMapper extends FunctionMapperImpl
  {
     private static final String SEAM_EL_PREFIX = "s";
     
     private static Map<String,Method> methodCache = new HashMap<String,Method>();
     
     private static final LogProvider log = Logging
     .getLogProvider(SeamELFunctionMapper.class);
     
     static {
        cacheMethod("hasPermission", SeamSecurityManager.class, "hasPermission", 
                 new Class[] {String.class, String.class, Object[].class});
        cacheMethod("hasRole", SeamSecurityManager.class, "hasRole",
                 new Class[] { String.class });      
     }
  
     @Override 
     public Method resolveFunction(String prefix, String localName) 
     {
        if (SEAM_EL_PREFIX.equals(prefix))
           return methodCache.get(localName);
        else
           return super.resolveFunction(prefix, localName);
     }  
     
     private static void cacheMethod(String localName, Class cls, String name, Class[] params)
     {
        try
        {
           Method m = cls.getMethod(name, params);
           methodCache.put(localName, m);         
        }
        catch (NoSuchMethodException ex)
        {
           log.warn(String.format("Method %s.%s could not be cached", cls.getName(), name));
        }
     }
  }