org.sakaiproject.conditions.impl.BaseConditionService.java Source code

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Here is the source code for org.sakaiproject.conditions.impl.BaseConditionService.java

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/**********************************************************************************
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 *
 * Copyright (c) 2008, 2009, 2010 Sakai Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.opensource.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
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package org.sakaiproject.conditions.impl;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Observable;
import java.util.Observer;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.sakaiproject.conditions.api.Condition;
import org.sakaiproject.conditions.api.ConditionProvider;
import org.sakaiproject.conditions.api.ConditionService;
import org.sakaiproject.conditions.api.ConditionTemplateSet;
import org.sakaiproject.conditions.api.Rule;
import org.sakaiproject.conditions.api.Rule.Conjunction;

public class BaseConditionService implements ConditionService, Observer {

    private static Log log = LogFactory.getLog(BaseConditionService.class);

    private Map<String, String> eventLookup = new HashMap<String, String>();
    private Map<String, ConditionProvider> registeredProviders = new HashMap<String, ConditionProvider>();

    public void init() {
        log.info("init()");
    }

    public String addRule(String eventType, Rule rule) {
        return "foo";
    }

    public ConditionTemplateSet getConditionTemplateSetForService(String serviceId) {
        return null;
    }

    public Set<String> getRegisteredServiceNames() {
        return registeredProviders.keySet();
    }

    public void registerConditionTemplates(ConditionTemplateSet conditionTemplateSet) {
    }

    public void update(Observable o, Object arg) {
    }

    public Map<String, String> getEntitiesForServiceAndContext(String serviceName, String contextId) {
        ConditionProvider provider = registeredProviders.get(serviceName);

        if (provider == null) {
            return new HashMap<String, String>();
        }

        return provider.getEntitiesForContext(contextId);
    }

    public String getClassNameForEvent(String event) {
        return eventLookup.get(event);
    }

    public void registerConditionProvider(ConditionProvider provider) {
        this.eventLookup.putAll(provider.getEventToDomainClassMapping());
        this.registeredProviders.put(provider.getId(), provider);
    }

    public ConditionProvider getConditionProvider(String providerId) {
        return this.registeredProviders.get(providerId);
    }

    public Condition makeBooleanExpression(String eventDataClass, String missingTermQuery, String operatorValue,
            Object argument) {
        return new BooleanExpression(eventDataClass, missingTermQuery, operatorValue, argument);
    }

    public Rule makeRule(String resourceId, List<Condition> predicates, Conjunction or) {
        return new ResourceReleaseRule(resourceId, predicates, Rule.Conjunction.OR);
    }

}