Example usage for org.apache.commons.configuration CompositeConfiguration interpolatedConfiguration

Introduction

In this page you can find the example usage for org.apache.commons.configuration CompositeConfiguration interpolatedConfiguration.

Prototype

public Configuration interpolatedConfiguration() 

Source Link

Document

Returns a configuration with the same content as this configuration, but with all variables replaced by their actual values.

Usage

From source file:ffx.autoparm.Keyword_poltype.java

/**
 * This method sets up configuration properties in the following precedence
 * order: 1.) Java system properties a.) -Dkey=value from the Java command
 * line b.) System.setProperty("key","value") within Java code.
 *
 * 2.) Structure specific properties (for example pdbname.properties)
 *
 * 3.) User specific properties (~/.ffx/ffx.properties)
 *
 * 4.) System wide properties (file defined by environment variable
 * FFX_PROPERTIES)//  www .j  a  v a 2 s  . c  o m
 *
 * 5.) Internal force field definition.
 *
 * @since 1.0
 * @param file a {@link java.io.File} object.
 * @return a {@link org.apache.commons.configuration.CompositeConfiguration}
 * object.
 */
public static CompositeConfiguration loadProperties(File file) {
    /**
     * Command line options take precedences.
     */
    CompositeConfiguration properties = new CompositeConfiguration();
    properties.addConfiguration(new SystemConfiguration());

    /**
     * Structure specific options are 2nd.
     */
    if (file != null && file.exists() && file.canRead()) {

        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
            String prmfilename = br.readLine().split(" +")[1];
            File prmfile = new File(prmfilename);
            if (prmfile.exists() && prmfile.canRead()) {
                properties.addConfiguration(new PropertiesConfiguration(prmfile));
                properties.addProperty("propertyFile", prmfile.getCanonicalPath());
            }
        } catch (Exception e1) {
            e1.printStackTrace();
        }
    }

    //      /**
    //       * User specific options are 3rd.
    //       */
    //      String filename = System.getProperty("user.home") + File.separator
    //            + ".ffx/ffx.properties";
    //      File userPropFile = new File(filename);
    //      if (userPropFile.exists() && userPropFile.canRead()) {
    //         try {
    //            properties.addConfiguration(new PropertiesConfiguration(
    //                  userPropFile));
    //         } catch (Exception e) {
    //            logger.info("Error loading " + filename + ".");
    //         }
    //      }
    //
    //      /**
    //       * System wide options are 2nd to last.
    //       */
    //      filename = System.getenv("FFX_PROPERTIES");
    //      if (filename != null) {
    //         File systemPropFile = new File(filename);
    //         if (systemPropFile.exists() && systemPropFile.canRead()) {
    //            try {
    //               properties.addConfiguration(new PropertiesConfiguration(
    //                     systemPropFile));
    //            } catch (Exception e) {
    //               logger.info("Error loading " + filename + ".");
    //            }
    //         }
    //      }
    /**
     * Echo the interpolated configuration.
     */
    if (logger.isLoggable(Level.FINE)) {
        Configuration config = properties.interpolatedConfiguration();
        Iterator<String> i = config.getKeys();
        while (i.hasNext()) {
            String s = i.next();
            logger.fine("Key: " + s + ", Value: " + Arrays.toString(config.getList(s).toArray()));
        }
    }

    return properties;
}

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