Metacat

package edu.ucsb.nceas.metacat.index;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

/**

 * Read field definitions from a file. Replacement for Spring-based config used in DataONE.

 * Presently uses csv-style text which is primitive and fragile; should probably be some

 * sort of xml to be properly javaee-esque. It's possible to use Spring configuration info

 * directly, but the parsing and evaluation involved is non-trivial, even though the data

 * involved is really quite simple. Thus at present our config info has been manually

 * generated in this format, based on the DataONE indexer's definitions.

 *

 * Oh Java, when will you get a decent object syntax?

 */

public class FieldDefReader {

	public static List<FieldSpec> read(File f) {

		ArrayList<FieldSpec> specs = new ArrayList<FieldSpec>(20);

		try {

			BufferedReader r = new BufferedReader(new FileReader(f));

			String s;

			while ((s = r.readLine()) != null) {

				String[] def = s.split(" ");

				D1IndexField.DataFormat df = D1IndexField.DataFormat.SINGLE;

				if (def[2].equals("set")) df = D1IndexField.DataFormat.SET;

				else if (def[2].equals("multi")) df = D1IndexField.DataFormat.MULTISET;

				D1IndexField.Conversion dc = D1IndexField.Conversion.NONE;

				if (def[3].equals("date")) dc = D1IndexField.Conversion.DATE;

				else if (def[3].equals("fgdc")) dc = D1IndexField.Conversion.FGDCDATE;

				else if (def[3].equals("lat")) dc = D1IndexField.Conversion.LATITUDE;

				else if (def[3].equals("lon")) dc = D1IndexField.Conversion.LONGITUDE;

				specs.add(new D1IndexField(def[0], def[1], df, dc));

			}

			r.close();

		} catch (IOException e) {

			// TODO: logs

			e.printStackTrace();

		}

		return specs;

	}

}