Richard S. Hall | 7fa1415 | 2006-06-14 15:22:03 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2006 The Apache Software Foundation |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | * |
| 16 | */ |
| 17 | package org.apache.felix.ipojo; |
| 18 | |
| 19 | import java.util.logging.Level; |
| 20 | |
| 21 | import org.apache.felix.ipojo.metadata.Element; |
| 22 | import org.osgi.framework.BundleContext; |
| 23 | |
| 24 | /** |
| 25 | * The component manager factory class manages component manager object. |
Richard S. Hall | 749e459 | 2006-06-22 12:51:44 +0000 | [diff] [blame] | 26 | * @author <a href="mailto:felix-dev@incubator.apache.org">Felix Project Team</a> |
Richard S. Hall | 7fa1415 | 2006-06-14 15:22:03 +0000 | [diff] [blame] | 27 | */ |
| 28 | public class ComponentManagerFactory { |
| 29 | |
| 30 | // Fields : |
| 31 | /** |
| 32 | * List of the managed component manager. |
| 33 | */ |
| 34 | private ComponentManager[] m_componentManagers = new ComponentManager[0]; |
| 35 | |
| 36 | /** |
| 37 | * The bundle context reference. |
| 38 | */ |
| 39 | private BundleContext m_bundleContext = null; |
| 40 | |
| 41 | //End field |
| 42 | |
| 43 | // Field accessors |
| 44 | |
| 45 | /** |
| 46 | * Add a component manager factory to the component manager list. |
| 47 | * @param cm : the new component metadata. |
| 48 | */ |
| 49 | private void addComponent(ComponentManager cm) { |
| 50 | |
| 51 | // If the component manager array is not empty add the new factory at the end |
| 52 | if (m_componentManagers.length != 0) { |
| 53 | ComponentManager[] newCM = new ComponentManager[m_componentManagers.length + 1]; |
| 54 | System.arraycopy(m_componentManagers, 0, newCM, 0, m_componentManagers.length); |
| 55 | newCM[m_componentManagers.length] = cm; |
| 56 | m_componentManagers = newCM; |
| 57 | } |
| 58 | // Else create an array of size one with the new component manager |
| 59 | else { |
| 60 | m_componentManagers = new ComponentManager[] {cm}; |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Remove the component manager for m the list. |
| 66 | * @param cm : the component manager to remove |
| 67 | */ |
| 68 | public void removeComponent(ComponentManager cm) { |
| 69 | cm.stop(); |
| 70 | int idx = -1; |
| 71 | |
| 72 | for (int i = 0; i < m_componentManagers.length; i++) { |
| 73 | if (m_componentManagers[i] == cm) { idx = i; } |
| 74 | } |
| 75 | |
| 76 | if (idx >= 0) { |
| 77 | if ((m_componentManagers.length - 1) == 0) { m_componentManagers = new ComponentManager[0]; } |
| 78 | else { |
| 79 | ComponentManager[] newCMList = new ComponentManager[m_componentManagers.length - 1]; |
| 80 | System.arraycopy(m_componentManagers, 0, newCMList, 0, idx); |
| 81 | if (idx < newCMList.length) { |
| 82 | System.arraycopy(m_componentManagers, idx + 1, newCMList, idx, newCMList.length - idx); } |
| 83 | m_componentManagers = newCMList; |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * @return the iPOJO activator reference |
| 90 | */ |
| 91 | public BundleContext getBundleContext() { return m_bundleContext; } |
| 92 | |
| 93 | // End field accessors |
| 94 | |
| 95 | /** |
| 96 | * Constructor of a ComponentManagerFactory from a component metadata. |
| 97 | * This contructor is use when the iPOJO Activator is used. |
| 98 | * @param cm : Component Metadata for the component factory |
| 99 | */ |
| 100 | protected ComponentManagerFactory(Activator activator, Element cm) { |
| 101 | m_bundleContext = activator.getBundleContext(); |
| 102 | createComponentManager(cm); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Create a component manager factory and create a component manager with the given medatada. |
| 107 | * @param bc : bundle context |
| 108 | * @param cm : metadata of the component to create |
| 109 | */ |
| 110 | public ComponentManagerFactory(BundleContext bc, Element cm) { |
| 111 | m_bundleContext = bc; |
| 112 | createComponentManager(cm); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Create a component manager factory, no component manager are created. |
| 117 | * @param bc |
| 118 | */ |
| 119 | public ComponentManagerFactory(BundleContext bc) { |
| 120 | m_bundleContext = bc; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Create a component manager form the component metadata. |
| 125 | * @param cm : Component Metadata |
| 126 | * @return a component manager configured with the metadata |
| 127 | */ |
| 128 | public ComponentManager createComponentManager(Element cm) { |
| 129 | ComponentManager component = new ComponentManager(this); |
| 130 | component.configure(cm); |
| 131 | addComponent(component); |
| 132 | return component; |
| 133 | } |
| 134 | |
| 135 | // Factory lifecycle management |
| 136 | |
| 137 | /** |
| 138 | * Stop all the component managers. |
| 139 | */ |
| 140 | public void stop() { |
| 141 | Activator.getLogger().log(Level.INFO, "[Bundle " + m_bundleContext.getBundle().getBundleId() + "] Stop the component factory"); |
| 142 | for (int i = 0; i < m_componentManagers.length; i++) { |
| 143 | ComponentManager cm = m_componentManagers[i]; |
| 144 | cm.stop(); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Start all the component managers. |
| 150 | */ |
| 151 | public void start() { |
| 152 | Activator.getLogger().log(Level.INFO, "[Bundle " + m_bundleContext.getBundle().getBundleId() + "] Start the component factory"); |
| 153 | for (int i = 0; i < m_componentManagers.length; i++) { |
| 154 | ComponentManager cm = m_componentManagers[i]; |
| 155 | cm.start(); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | } |