jndiproperties.java

主要是对串口驱动的的一些控制源码！！！ 在下载javacomm20-win32.zip后就可以使用。

/**
 * $Log: JndiProperties.java,v $
 * Revision 1.1  2003/02/12 16:52:56  mwulff
 * initial version
 *
 * Revision 1.1  2003/01/16 13:11:41  mwulff
 * initial version
 *
 * Revision 1.2  2002/12/14 22:43:08  mwulff
 * no message
 *
 * Revision 1.1  2002/11/22 16:41:50  mwulff
 * moved
 *
 * Revision 1.1  2002/11/15 18:20:56  mwulff
 * initial version
 *
 */
package de.fhm.jkf.comm.sv;

import java.util.Properties;

import javax.naming.Context;

/**
 * @author	marten wulff
 */
public class JndiProperties {

	private String factory = null;
	private String providerUrl = null;
	private String packagePrefixes = null;
	private Properties props = null;

	private static Object semaphore = new Object();

	public JndiProperties() {
	}

	public JndiProperties(
		String factory,
		String factoryUrl,
		String packagePrefixes) {
		this.factory = factory;
		this.providerUrl = factoryUrl;
		this.packagePrefixes = packagePrefixes;
	}

	/**
	 * Returns the factory.
	 * @return String
	 */
	public String getFactory() {
		return factory;
	}

	/**
	 * Returns the providerUrl.
	 * @return String
	 */
	public String getProviderUrl() {
		return providerUrl;
	}

	/**
	 * Returns the packagePrefixes.
	 * @return String
	 */
	public String getPackagePrefixes() {
		return packagePrefixes;
	}

	/**
	 * Sets the factory.
	 * @param factory The factory to set
	 */
	public void setFactory(String factory) {
		this.factory = factory;
	}

	/**
	 * Sets the providerUrl.
	 * @param providerUrl The providerUrl to set
	 */
	public void setProviderUrl(String factoryUrl) {
		this.providerUrl = factoryUrl;
	}

	/**
	 * Sets the packagePrefixes.
	 * @param packagePrefixes The packagePrefixes to set
	 */
	public void setPackagePrefixes(String packagePrefixes) {
		this.packagePrefixes = packagePrefixes;
	}

	public Properties getProperties() {
		if (props == null) {
			if (props == null) {
				synchronized (semaphore) {
					props = new Properties();
					if (factory != null
						&& providerUrl != null
						&& packagePrefixes != null) {
						props.put(Context.INITIAL_CONTEXT_FACTORY, factory);
						props.put(Context.PROVIDER_URL, providerUrl);
						props.put(Context.URL_PKG_PREFIXES, packagePrefixes);
					}
				}
			}
		}

		return props;
	}
}