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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
MemoryProcessContextDAO.java | 100% | 100% | 100% | 100% |
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/*
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* $Id: MemoryProcessContextDAO.java,v 1.1 2004/12/15 14:18:09 patforna Exp $
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*
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* Copyright (c) 2004 Patric Fornasier, Pawel Kowalski
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* Berne University of Applied Sciences
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* School of Engineering and Information Technology
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* All rights reserved.
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*/
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package bexee.dao;
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import java.util.HashMap;
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import java.util.Map;
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import org.apache.commons.id.serial.AlphanumericGenerator;
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import bexee.core.ProcessContext;
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/**
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* This class uses memory rather than persistent storage to store and load
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* <code>ProcessContext</code> objects.
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*
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* @version $Revision: 1.1 $, $Date: 2004/12/15 14:18:09 $
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* @author Patric Fornasier
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* @author Pawel Kowalski
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*/
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public class MemoryProcessContextDAO implements ProcessContextDAO { |
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protected static Map map; |
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private static AlphanumericGenerator generator; |
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/**
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* Creates a new <code>MemoryProcessContextDAO</code> that uses a static
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* <code>Map</code> to manage the stored <code>ProcessContext</code>
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* objects.
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*/
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public MemoryProcessContextDAO() {
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if (map == null) { |
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map = new HashMap();
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} |
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if (generator == null) { |
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generator = generator = new AlphanumericGenerator(false, 10); |
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} |
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} |
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public void delete(String id) { |
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map.remove(id); |
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} |
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public ProcessContext find(String id) {
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return (ProcessContext) map.get(id);
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} |
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public String insert(ProcessContext ctx) {
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// generate id and set it on process context
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String id = generator.nextStringIdentifier(); |
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ctx.setId(id); |
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// store process context and return id
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map.put(id, ctx); |
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return id;
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} |
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public void update(ProcessContext ctx) throws DAOException { |
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// check if we have that object already
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String id = ctx.getId(); |
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ProcessContext oldCtx = find(id); |
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if (oldCtx == null) { |
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throw new DAOException("No object with id " + id + "exists"); |
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} |
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// replace with new version
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map.put(id, ctx); |
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} |
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} |
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