| /* |
| * 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.dm.runtime; |
| |
| import org.apache.felix.dm.BundleDependency; |
| import org.apache.felix.dm.ConfigurationDependency; |
| import org.apache.felix.dm.Dependency; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.ResourceDependency; |
| import org.apache.felix.dm.ServiceDependency; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * Class used to build a concrete dependency from meta data. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class DependencyBuilder |
| { |
| public enum DependencyType |
| { |
| ServiceDependency, |
| TemporalServiceDependency, |
| ConfigurationDependency, |
| BundleDependency, |
| ResourceDependency |
| } |
| |
| private MetaData m_metaData; |
| |
| public DependencyBuilder(MetaData dependencyMetaData) |
| { |
| m_metaData = dependencyMetaData; |
| } |
| |
| public Dependency build(Bundle b, DependencyManager dm) |
| throws Exception |
| { |
| Dependency dp = null; |
| DependencyType type; |
| |
| try |
| { |
| type = DependencyType.valueOf(m_metaData.getString(Params.type)); |
| } |
| catch (IllegalArgumentException e) |
| { |
| throw new IllegalArgumentException("no \"type\" parameter found from metaData: " + m_metaData); |
| } |
| |
| switch (type) |
| { |
| case ServiceDependency: |
| dp = createServiceDependency(b, dm); |
| break; |
| |
| case ConfigurationDependency: |
| dp = createConfigurationDependency(dm); |
| break; |
| |
| case BundleDependency: |
| dp = createBundleDependency(dm); |
| break; |
| |
| case ResourceDependency: |
| dp = createResourceDependency(dm); |
| break; |
| |
| default: |
| throw new IllegalArgumentException("Can't build service dependency: " + type); |
| } |
| return dp; |
| } |
| |
| private Dependency createServiceDependency(Bundle b, DependencyManager dm) |
| throws ClassNotFoundException |
| { |
| String service = m_metaData.getString(Params.service); |
| Class<?> serviceClass = b.loadClass(service); |
| String serviceFilter = m_metaData.getString(Params.filter, null); |
| String defaultServiceImpl = m_metaData.getString(Params.defaultImpl, null); |
| Class<?> defaultServiceImplClass = |
| (defaultServiceImpl != null) ? b.loadClass(defaultServiceImpl) : null; |
| String added = m_metaData.getString(Params.added, null); |
| long timeout = m_metaData.getLong(Params.timeout, -1L); |
| String changed = timeout != -1 ? null : m_metaData.getString(Params.changed, null); |
| String removed = timeout != -1 ? null : m_metaData.getString(Params.removed, null); |
| String autoConfigField = m_metaData.getString(Params.autoConfig, null); |
| boolean required = "true".equals(m_metaData.getString(Params.required, "true")); |
| boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false")); |
| |
| Dependency dp = createServiceDependency(dm, serviceClass, |
| serviceFilter, defaultServiceImplClass, added, changed, |
| removed, autoConfigField, timeout, required, propagate); |
| return dp; |
| } |
| |
| private Dependency createServiceDependency(DependencyManager dm, Class<?> serviceClass, |
| String serviceFilter, Class<?> defaultServiceImplClass, String added, |
| String changed, String removed, String autoConfigField, long timeout, boolean required, |
| boolean propagate) |
| { |
| ServiceDependency sd = timeout != -1 ? dm.createTemporalServiceDependency(timeout) |
| : dm.createServiceDependency(); |
| sd.setService(serviceClass, serviceFilter); |
| if (defaultServiceImplClass != null) |
| { |
| sd.setDefaultImplementation(defaultServiceImplClass); |
| } |
| sd.setCallbacks(added, changed, removed); |
| if (autoConfigField != null) |
| { |
| sd.setAutoConfig(autoConfigField); |
| } |
| if (timeout == -1) |
| { |
| sd.setRequired(required); |
| } |
| |
| sd.setPropagate(propagate); |
| return sd; |
| } |
| |
| private Dependency createConfigurationDependency(DependencyManager dm) |
| { |
| String pid = m_metaData.getString(Params.pid); |
| boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false")); |
| String callback = m_metaData.getString(Params.updated, "updated"); |
| Dependency dp = createConfigurationDependency(dm, pid, callback, propagate); |
| return dp; |
| } |
| |
| private Dependency createConfigurationDependency(DependencyManager dm, String pid, String callback, |
| boolean propagate) |
| { |
| if (pid == null) |
| { |
| throw new IllegalArgumentException( |
| "pid attribute not provided in ConfigurationDependency declaration"); |
| } |
| ConfigurationDependency cd = dm.createConfigurationDependency(); |
| cd.setPid(pid); |
| cd.setCallback(callback); |
| cd.setPropagate(propagate); |
| return cd; |
| } |
| |
| /** |
| * Creates a BundleDependency that we parsed from a component descriptor entry. |
| * @param b |
| * @param dm |
| * @param parser |
| * @return |
| */ |
| private Dependency createBundleDependency(DependencyManager dm) |
| { |
| String added = m_metaData.getString(Params.added, null); |
| String changed = m_metaData.getString(Params.changed, null); |
| String removed = m_metaData.getString(Params.removed, null); |
| boolean required = "true".equals(m_metaData.getString(Params.required, "true")); |
| String filter = m_metaData.getString(Params.filter, null); |
| int stateMask = m_metaData.getInt(Params.stateMask, -1); |
| boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false")); |
| |
| Dependency dp = createBundleDependency(dm, added, changed, removed, required, propagate, filter, |
| stateMask); |
| return dp; |
| } |
| |
| private Dependency createBundleDependency(DependencyManager dm, String added, String changed, |
| String removed, boolean required, boolean propagate, String filter, int stateMask) |
| { |
| BundleDependency bd = dm.createBundleDependency(); |
| bd.setCallbacks(added, changed, removed); |
| bd.setRequired(required); |
| bd.setPropagate(propagate); |
| if (filter != null) |
| { |
| bd.setFilter(filter); |
| } |
| if (stateMask != -1) |
| { |
| bd.setStateMask(stateMask); |
| } |
| return bd; |
| } |
| |
| private Dependency createResourceDependency(DependencyManager dm) |
| { |
| String added = m_metaData.getString(Params.added, null); |
| String changed = m_metaData.getString(Params.changed, null); |
| String removed = m_metaData.getString(Params.removed, null); |
| String filter = m_metaData.getString(Params.filter, null); |
| boolean required = "true".equals(m_metaData.getString(Params.required, "true")); |
| boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false")); |
| String autoConfigField = m_metaData.getString(Params.autoConfig, null); |
| |
| Dependency dp = createResourceDependency(dm, added, changed, removed, required, filter, |
| propagate, autoConfigField); |
| return dp; |
| } |
| |
| private Dependency createResourceDependency(DependencyManager dm, String added, |
| String changed, String removed, boolean required, String filter, boolean propagate, |
| String autoConfigField) |
| { |
| ResourceDependency rd = dm.createResourceDependency(); |
| rd.setCallbacks(added, changed, removed); |
| rd.setRequired(required); |
| if (filter != null) |
| { |
| rd.setFilter(filter); |
| } |
| if (autoConfigField != null) |
| { |
| rd.setAutoConfig(autoConfigField); |
| } |
| rd.setPropagate(propagate); |
| return rd; |
| } |
| } |