Java tutorial
package nl.opengeogroep.filesetsync.client.config; /* * Copyright (C) 2014 B3Partners B.V. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.Collections; import java.util.List; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Unmarshaller; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlElementWrapper; import javax.xml.bind.annotation.XmlRootElement; import org.apache.commons.lang3.builder.ToStringBuilder; import org.apache.commons.lang3.builder.ToStringStyle; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * Root configuration class. * * @author Matthijs Laan */ @XmlRootElement(name = "sync") @XmlAccessorType(XmlAccessType.FIELD) public class SyncConfig { private static final Log log = LogFactory.getLog(SyncConfig.class); private static SyncConfig instance; /** * List of plugins to load (in order). */ @XmlElementWrapper(name = "plugins") @XmlElement(name = "plugin") List<Plugin> plugins = new ArrayList(); /** * Directory to store variable information (such as fileset sync state). * Relative path to jar file containing main class. */ @XmlElement(name = "var", required = true) private String varDir; /** * Global properties. */ @XmlElementWrapper(name = "globals") @XmlElement(name = "property") List<Property> properties = new ArrayList(); /** * Filesets to synchronize. Executed in order. */ @XmlElementWrapper(name = "filesets") @XmlElement(name = "fileset") List<Fileset> filesets = new ArrayList(); // <editor-fold defaultstate="collapsed" desc="getters and setters"> public List<Plugin> getPlugins() { return plugins; } public void setPlugins(List<Plugin> plugins) { this.plugins = plugins; } public String getVarDir() { return varDir; } public void setVarDir(String varDir) { this.varDir = varDir; } public List<Property> getProperties() { return properties; } public void setProperties(List<Property> properties) { this.properties = properties; } public List<Fileset> getFilesets() { return filesets; } public void setFilesets(List<Fileset> filesets) { this.filesets = filesets; } // </editor-fold> public static SyncConfig getInstance() { return instance; } public static void load(String basePath, String filename) throws JAXBException, IOException { InputStream in = new FileInputStream(filename); JAXBContext jaxb = JAXBContext.newInstance(SyncConfig.class); Unmarshaller um = jaxb.createUnmarshaller(); try { instance = (SyncConfig) um.unmarshal(in); } finally { in.close(); } File f = new File(instance.varDir); if (!f.isAbsolute()) { instance.varDir = basePath + File.separator + instance.varDir; } } public Fileset getFileset(String name) { for (Fileset fs : filesets) { if (fs.getName().equals(name)) { return fs; } } log.debug("Requested fileset not in configuration file by name " + name); return null; } public int getMaxFilesetNameLength() { int l = 0; for (Fileset fs : filesets) { l = Math.max(l, fs.getName().length()); } return l; } public String getProperty(String name, String defaultValue) { for (Property p : properties) { if (p.getName().equals(name)) { return p.getValue(); } } return defaultValue; } @Override public String toString() { return ToStringBuilder.reflectionToString(this, ToStringStyle.MULTI_LINE_STYLE); } }