/* 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.camunda.bpm.engine.impl.el;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.camunda.bpm.engine.impl.context.Context;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.impl.javax.el.FunctionMapper;
import org.camunda.bpm.engine.impl.util.ReflectUtil;
/**
* @author Sebastian Menski
*/
public class CommandContextFunctionMapper extends FunctionMapper {
public static Map<String, Method> COMMAND_CONTEXT_FUNCTION_MAP = null;
public Method resolveFunction(String prefix, String localName) {
// Context functions are used un-prefixed
ensureContextFunctionMapInitialized();
return COMMAND_CONTEXT_FUNCTION_MAP.get(localName);
}
protected void ensureContextFunctionMapInitialized() {
if (COMMAND_CONTEXT_FUNCTION_MAP == null) {
synchronized (CommandContextFunctionMapper.class) {
if (COMMAND_CONTEXT_FUNCTION_MAP == null) {
COMMAND_CONTEXT_FUNCTION_MAP = new HashMap<String, Method>();
createMethodBindings();
}
}
}
}
protected void createMethodBindings() {
Class<?> mapperClass = getClass();
COMMAND_CONTEXT_FUNCTION_MAP.put("currentUser", ReflectUtil.getMethod(mapperClass, "currentUser"));
COMMAND_CONTEXT_FUNCTION_MAP.put("currentUserGroups", ReflectUtil.getMethod(mapperClass, "currentUserGroups"));
}
public static String currentUser() {
CommandContext commandContext = Context.getCommandContext();
if (commandContext != null) {
return commandContext.getAuthenticatedUserId();
}
else {
return null;
}
}
public static List<String> currentUserGroups() {
CommandContext commandContext = Context.getCommandContext();
if (commandContext != null) {
return commandContext.getAuthenticatedGroupIds();
}
else {
return null;
}
}
}