| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.felix.scr.integration.components; |
| |
| |
| import java.util.Dictionary; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.osgi.service.component.ComponentConstants; |
| import org.osgi.service.component.ComponentContext; |
| |
| |
| public class SimpleComponent |
| { |
| |
| // component configuration property whose existence causes the |
| // activate method to fail |
| public static final String PROP_ACTIVATE_FAILURE = "request.activation.failure"; |
| |
| public static final Map<Long, SimpleComponent> INSTANCES = new HashMap<Long, SimpleComponent>(); |
| |
| public static final Set<SimpleComponent> PREVIOUS_INSTANCES = new HashSet<SimpleComponent>(); |
| |
| public volatile static SimpleComponent INSTANCE; |
| |
| private Map<?, ?> m_config; |
| |
| public long m_id; |
| |
| public ComponentContext m_activateContext; |
| |
| public volatile SimpleService m_singleRef; |
| |
| public volatile int m_singleRefBind = 0; |
| |
| public volatile int m_singleRefUnbind = 0; |
| |
| public final Set<SimpleService> m_multiRef = new HashSet<SimpleService>(); |
| |
| public int m_multiRefBind = 0; |
| |
| public int m_multiRefUnbind = 0; |
| |
| public int m_modified = 0; |
| |
| |
| @SuppressWarnings("unused") |
| private void activate( ComponentContext activateContext, Map<?, ?> config ) |
| { |
| // fail activation if requested so |
| if ( config.containsKey( PROP_ACTIVATE_FAILURE ) ) |
| { |
| throw new RuntimeException( String.valueOf( config.get( PROP_ACTIVATE_FAILURE ) ) ); |
| } |
| |
| m_id = ( Long ) config.get( ComponentConstants.COMPONENT_ID ); |
| m_activateContext = activateContext; |
| |
| INSTANCE = this; |
| INSTANCES.put( m_id, this ); |
| setConfig( config ); |
| |
| if ( PREVIOUS_INSTANCES.contains( this ) ) |
| { |
| System.err.println(); |
| System.err.println( "An instance has been reused !!!" ); |
| System.err.println( "Existing: " + PREVIOUS_INSTANCES ); |
| System.err.println( "New : " + this ); |
| System.err.println(); |
| } |
| else |
| { |
| PREVIOUS_INSTANCES.add( this ); |
| } |
| } |
| |
| |
| @SuppressWarnings("unused") |
| private void configure( ComponentContext context ) |
| { |
| setConfig( context.getProperties() ); |
| } |
| |
| @SuppressWarnings("unused") |
| private void modified( ComponentContext context ) |
| { |
| setConfig( context.getProperties() ); |
| m_modified++; |
| } |
| |
| @SuppressWarnings("unused") |
| private void deactivate() |
| { |
| INSTANCES.remove( getProperty( ComponentConstants.COMPONENT_ID ) ); |
| |
| m_activateContext = null; |
| INSTANCE = null; |
| setConfig( new HashMap<Object, Object>() ); |
| } |
| |
| |
| protected void setConfig( Map<?, ?> config ) |
| { |
| m_config = config; |
| } |
| |
| |
| protected void setConfig( Dictionary<?, ?> config ) |
| { |
| Map<Object, Object> configMap = new HashMap<Object, Object>(); |
| for ( Enumeration<?> ce = config.keys(); ce.hasMoreElements(); ) |
| { |
| Object key = ce.nextElement(); |
| Object value = config.get( key ); |
| configMap.put( key, value ); |
| } |
| m_config = configMap; |
| } |
| |
| |
| public Object getProperty( Object name ) |
| { |
| return m_config.get( name ); |
| } |
| |
| |
| // bind method for single service binding |
| public void setSimpleService( SimpleService simpleService ) |
| { |
| this.m_singleRef = simpleService; |
| this.m_singleRefBind++; |
| } |
| |
| |
| // unbind method for single service binding |
| public void unsetSimpleService( SimpleService simpleService ) |
| { |
| if ( this.m_singleRef == simpleService ) |
| { |
| this.m_singleRef = null; |
| } |
| this.m_singleRefUnbind++; |
| } |
| |
| |
| // bind method for multi-service binding |
| public void bindSimpleService( SimpleService simpleService ) |
| { |
| this.m_multiRef.add( simpleService ); |
| this.m_multiRefBind++; |
| } |
| |
| |
| // unbind method for multi-service binding |
| public void unbindSimpleService( SimpleService simpleService ) |
| { |
| this.m_multiRef.remove( simpleService ); |
| this.m_multiRefUnbind++; |
| } |
| } |