+
−package org.monetdb.mcl.net;
+
−
+
−import org.monetdb.jdbc.MonetDriver;
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−
+
−import java.io.File;
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−import java.lang.management.ManagementFactory;
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−import java.lang.management.RuntimeMXBean;
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−import java.net.InetAddress;
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−import java.net.UnknownHostException;
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−import java.sql.ClientInfoStatus;
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−import java.sql.SQLClientInfoException;
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−import java.util.Collections;
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−import java.util.Map;
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−import java.util.Properties;
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−
+
−public class ClientInfo {
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−	private static final String defaultHostname = findHostname();
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−
+
−	private static final String defaultClientLibrary = findClientLibrary();
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−
+
−	private static final String defaultApplicationName = findApplicationName();
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−
+
−	private static final String defaultPid = findPid();
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−
+
−	private final Properties props;
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−
+
−	public ClientInfo() {
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−		props = new Properties();
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−		props.setProperty("ClientHostname", defaultHostname);
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−		props.setProperty("ClientLibrary", defaultClientLibrary);
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−		props.setProperty("ClientPid", defaultPid);
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−		props.setProperty("ApplicationName", defaultApplicationName);
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−		props.setProperty("ClientRemark", "");
+
−	}
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−
+
−	private static String findHostname() {
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−		try {
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−			return InetAddress.getLocalHost().getHostName();
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−		} catch (UnknownHostException e) {
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−			return "";
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−		}
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−	}
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−
+
−	private static String findApplicationName() {
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−		String appName = "";
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−		try {
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−			String prop = System.getProperty("sun.java.command");
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−			if (prop != null) {
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−				// we want only the command, and not the arguments
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−				prop = prop.split("\\s", 2)[0];
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−				// keep only the basename5
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−				int idx = prop.lastIndexOf(File.separatorChar);
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−				if (idx >= 0)
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−					prop = prop.substring(idx + 1);
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−				appName = prop;
+
−			}
+
−		} catch (SecurityException e) {
+
−			// ignore
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−		}
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−
+
−		return appName;
+
−	}
+
−
+
−	private static String findPid() {
+
−		try {
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−			RuntimeMXBean mxbean = ManagementFactory.getRuntimeMXBean();
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−			String pidAtHostname = mxbean.getName();
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−			return pidAtHostname.split("@", 2)[0];
+
−		} catch (RuntimeException e) {
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−			return "";
+
−		}
+
−	}
+
−
+
−	private static String findClientLibrary() {
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−		return "monetdb-java " + MonetDriver.getDriverVersion();
+
−	}
+
−
+
−	public String format() {
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−		StringBuilder builder = new StringBuilder(200);
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−		for (String name : props.stringPropertyNames()) {
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−			String value = props.getProperty(name);
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−			builder.append(name);
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−			builder.append('=');
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−			builder.append(value);
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−			builder.append('\n');
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−		}
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−		return builder.toString();
+
−	}
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−
+
−	public Properties get() {
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−		Properties ret = new Properties();
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−		ret.putAll(props);
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−		return ret;
+
−	}
+
−
+
−	public boolean set(String name, String value) throws SQLClientInfoException {
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−		if (value == null)
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−			value = "";
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−		if (value.contains("\n")) {
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−			Map<String, ClientInfoStatus> map = Collections.singletonMap(name, ClientInfoStatus.REASON_VALUE_INVALID);
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−			throw new SQLClientInfoException(map);
+
−		}
+
−		if (props.containsKey(name)) {
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−			props.setProperty(name, value);
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−			return true;
+
−		} else {
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−			return false;
+
−		}
+
−	}
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−
+
−}