com.alfaariss.oa.engine.attribute.release.configuration.ConfigurationFactory.java Source code

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Here is the source code for com.alfaariss.oa.engine.attribute.release.configuration.ConfigurationFactory.java

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/*
 * Asimba Server
 * 
 * Copyright (C) 2012 Asimba
 * Copyright (C) 2007-2008 Alfa & Ariss B.V.
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see www.gnu.org/licenses
 * 
 * Asimba - Serious Open Source SSO - More information on www.asimba.org
 * 
 */
package com.alfaariss.oa.engine.attribute.release.configuration;

import java.util.HashMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.w3c.dom.Element;

import com.alfaariss.oa.OAException;
import com.alfaariss.oa.SystemErrors;
import com.alfaariss.oa.api.IComponent;
import com.alfaariss.oa.api.configuration.IConfigurationManager;
import com.alfaariss.oa.engine.core.attribute.AttributeException;
import com.alfaariss.oa.engine.core.attribute.release.IAttributeReleasePolicy;
import com.alfaariss.oa.engine.core.attribute.release.factory.IAttributeReleasePolicyFactory;

/**
 * Release policy factory.
 *
 * Reads the policy information from the configuration document.
 * @author MHO
 * @author Alfa & Ariss
 *
 */
public class ConfigurationFactory implements IAttributeReleasePolicyFactory, IComponent {
    private static Log _logger;
    private IConfigurationManager _configurationManager;
    private boolean _bEnabled;
    private HashMap<String, ConfigurationPolicy> _mapPolicies;

    /**
     * Creates the object. 
     */
    public ConfigurationFactory() {
        _logger = LogFactory.getLog(ConfigurationFactory.class);
        _mapPolicies = new HashMap<String, ConfigurationPolicy>();
        _bEnabled = false;
    }

    /**
     * Returns the policy with the supplied name or <code>null</code> if 
     * it does not exist.
     * @see IAttributeReleasePolicyFactory#getPolicy(java.lang.String)
     */
    @Override
    public IAttributeReleasePolicy getPolicy(String sPolicy) {
        return _mapPolicies.get(sPolicy);
    }

    /**
     * Returns TRUE if this release policy factory is enabled.
     * @see com.alfaariss.oa.api.IOptional#isEnabled()
     */
    @Override
    public boolean isEnabled() {
        return _bEnabled;
    }

    /**
     * Initializes the release policy factory.
     * @see IComponent#start(IConfigurationManager, org.w3c.dom.Element)
     */
    @Override
    public void start(IConfigurationManager oConfigurationManager, Element eConfig) throws OAException {
        try {
            _configurationManager = oConfigurationManager;
            _bEnabled = true;
            String sEnabled = _configurationManager.getParam(eConfig, "enabled");
            if (sEnabled != null) {
                if (sEnabled.equalsIgnoreCase("FALSE"))
                    _bEnabled = false;
                else if (!sEnabled.equalsIgnoreCase("TRUE")) {
                    _logger.error("Unknown value in 'enabled' configuration item: " + sEnabled);
                    throw new AttributeException(SystemErrors.ERROR_CONFIG_READ);
                }
            }

            Element ePolicy = _configurationManager.getSection(eConfig, "policy");
            while (ePolicy != null) {
                ConfigurationPolicy oPolicy = new ConfigurationPolicy(_configurationManager, ePolicy);
                _mapPolicies.put(oPolicy.getID(), oPolicy);

                ePolicy = _configurationManager.getNextSection(ePolicy);
            }
        } catch (AttributeException e) {
            throw e;
        } catch (Exception e) {
            _logger.fatal("Internal error during initialization", e);
            throw new AttributeException(SystemErrors.ERROR_INTERNAL, e);
        }
    }

    /**
     * Restarts the release policy factory.
     * @see com.alfaariss.oa.api.IComponent#restart(org.w3c.dom.Element)
     */
    @Override
    public void restart(Element eConfig) throws OAException {
        synchronized (this) {
            stop();
            start(_configurationManager, eConfig);
        }
    }

    /**
     * Stops the release policy factory.
     * @see com.alfaariss.oa.api.IComponent#stop()
     */
    @Override
    public void stop() {
        _bEnabled = false;
        if (_mapPolicies != null)
            _mapPolicies.clear();
    }
}