91 lines
2.6 KiB
Java
91 lines
2.6 KiB
Java
/**
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* Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source
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* Software GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.n52.wps.server;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.ServiceLoader;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import net.opengis.wps.x100.ProcessDescriptionType;
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public class ServiceLoaderAlgorithmRepository implements IAlgorithmRepository {
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private static final Logger logger = LoggerFactory.getLogger(ServiceLoaderAlgorithmRepository.class);
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private Map<String, Class<? extends IAlgorithm>> currentAlgorithms;
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public ServiceLoaderAlgorithmRepository() {
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this.currentAlgorithms = loadAlgorithms();
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}
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private Map<String, Class<? extends IAlgorithm>> loadAlgorithms() {
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Map<String, Class<? extends IAlgorithm>> result = new HashMap<String, Class<? extends IAlgorithm>>();
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ServiceLoader<IAlgorithm> loader = ServiceLoader.load(IAlgorithm.class);
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for (IAlgorithm ia : loader) {
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logger.debug("Adding algorithm with identifier {} and class {}",
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ia.getWellKnownName(), ia.getClass().getCanonicalName());
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result.put(ia.getWellKnownName(), ia.getClass());
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}
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return result;
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}
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@Override
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public Collection<String> getAlgorithmNames() {
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return this.currentAlgorithms.keySet();
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}
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@Override
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public IAlgorithm getAlgorithm(String processID) {
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Class<? extends IAlgorithm> clazz = this.currentAlgorithms.get(processID);
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if (clazz != null) {
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try {
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return clazz.newInstance();
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} catch (InstantiationException e) {
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logger.warn(e.getMessage(), e);
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} catch (IllegalAccessException e) {
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logger.warn(e.getMessage(), e);
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}
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}
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return null;
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}
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@Override
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public ProcessDescriptionType getProcessDescription(String processID) {
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IAlgorithm algo = getAlgorithm(processID);
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if (algo != null) {
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return algo.getDescription();
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}
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return null;
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}
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@Override
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public boolean containsAlgorithm(String processID) {
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return this.currentAlgorithms.containsKey(processID);
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}
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@Override
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public void shutdown() {
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}
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}
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