gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / service / spi / AbstractProviderManager.java @ 1314
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 {} {{Task}}
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*/
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package org.gvsig.tools.service.spi; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DynObject; |
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import org.gvsig.tools.extensionpoint.ExtensionPoint; |
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import org.gvsig.tools.extensionpoint.ExtensionPointManager; |
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import org.gvsig.tools.service.ServiceException; |
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/**
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* Base {@link ProviderManager} implementation which stores the registered
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* {@link ProviderFactory} objects into a {@link Map}, using the name as the
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* key.
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*
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* @author 2009- <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG team
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*/
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public abstract class AbstractProviderManager implements ProviderManager_WithGetFactories { |
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public void addProviderFactory(ProviderFactory providerFactory) { |
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ExtensionPointManager epm = ToolsLocator.getExtensionPointManager(); |
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ExtensionPoint ep = epm.add(this.getRegistryKey(),this.getRegistryDescription()); |
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ep.append(providerFactory.getName(), null, providerFactory);
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providerFactory.initialize(); |
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} |
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protected abstract String getRegistryKey(); |
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protected abstract String getRegistryDescription(); |
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public Provider createProvider(DynObject serviceParameters, |
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ProviderServices providerServices) throws ServiceException {
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String serviceName = serviceParameters.getDynClass().getName();
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ProviderFactory factory = getProviderFactory(serviceName); |
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return factory == null ? null : factory.create(serviceParameters, |
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providerServices); |
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} |
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public DynObject createServiceParameters(String serviceName) |
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throws ServiceException {
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return getProviderFactory(serviceName).createParameters();
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} |
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public ProviderFactory getProviderFactory(String serviceName) |
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throws ParametersException, NotRegisteredException {
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ExtensionPointManager epm = ToolsLocator.getExtensionPointManager(); |
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ExtensionPoint ep = epm.get(this.getRegistryKey());
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ProviderFactory factory = null;
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if (ep != null) { |
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try {
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factory = ((ProviderFactory) ep.create(serviceName)); |
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} catch (InstantiationException e) { |
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throw new ParametersException( |
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"Can't instance provider factory", e);
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} catch (IllegalAccessException e) { |
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throw new ParametersException("Can't access provider factory", |
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e); |
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} |
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} |
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if (factory == null) { |
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throw new NotRegisteredException(serviceName); |
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} |
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return factory;
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} |
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public List getProviderFactories() { |
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List factories = new ArrayList(); |
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ExtensionPointManager epm = ToolsLocator.getExtensionPointManager(); |
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ExtensionPoint ep = epm.add(this.getRegistryKey(),this.getRegistryDescription()); |
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Iterator it = ep.iterator();
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while( it.hasNext() ) {
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ExtensionPoint.Extension extension = (ExtensionPoint.Extension) it.next(); |
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try {
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ProviderFactory factory = (ProviderFactory) extension.create(); |
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factories.add(factory); |
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} catch (InstantiationException e) { |
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// Ignore, ProviderFactory are ExtensionSingleton and can't throw this exception
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} catch (IllegalAccessException e) { |
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// Ignore, ProviderFactory are ExtensionSingleton and can't throw this exception
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} |
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} |
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return factories;
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} |
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} |