001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.activemq.console.filter; 018 019import java.util.HashMap; 020import java.util.Iterator; 021import java.util.Map; 022import java.util.Set; 023 024public class GroupPropertiesViewFilter extends PropertiesViewFilter { 025 026 /** 027 * Creates a group properties filter that is able to filter the display 028 * result based on a group prefix 029 * 030 * @param next - the next query filter 031 */ 032 public GroupPropertiesViewFilter(QueryFilter next) { 033 super(next); 034 } 035 036 /** 037 * Creates a group properties filter that is able to filter the display 038 * result based on a group prefix 039 * 040 * @param groupView - the group filter to use 041 * @param next - the next query filter 042 */ 043 public GroupPropertiesViewFilter(Set groupView, QueryFilter next) { 044 super(groupView, next); 045 } 046 047 /** 048 * Filter the properties that matches the group prefix only. 049 * 050 * @param data - map data to filter 051 * @return - filtered map data 052 */ 053 protected Map filterView(Map data) { 054 // If no view specified, display all attributes 055 if (viewFilter == null || viewFilter.isEmpty()) { 056 return data; 057 } 058 059 Map newData; 060 try { 061 // Lets try to use the same class as the original 062 newData = data.getClass().newInstance(); 063 } catch (Exception e) { 064 // Lets use a default HashMap 065 newData = new HashMap(); 066 } 067 068 // Filter the keys to view 069 for (Iterator<String> i = data.keySet().iterator(); i.hasNext();) { 070 String key = i.next(); 071 072 // Checks if key matches any of the group filter 073 for (Iterator j = viewFilter.iterator(); j.hasNext();) { 074 String group = (String)j.next(); 075 if (key.startsWith(group)) { 076 newData.put(key, data.get(key)); 077 break; 078 } 079 } 080 } 081 082 return newData; 083 } 084}