net.ontopia.topicmaps.impl.utils.StorePoolableObjectFactory.java Source code

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Here is the source code for net.ontopia.topicmaps.impl.utils.StorePoolableObjectFactory.java

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/*
 * #!
 * Ontopia Engine
 * #-
 * Copyright (C) 2001 - 2013 The Ontopia Project
 * #-
 * Licensed under the Apache 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.apache.org/licenses/LICENSE-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.
 * !#
 */

package net.ontopia.topicmaps.impl.utils;

import java.util.Collection;
import java.util.HashSet;

import net.ontopia.topicmaps.core.TopicMapStoreFactoryIF;
import net.ontopia.topicmaps.core.TopicMapStoreIF;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * INTERNAL: A commons-pool PoolableObjectFactory that uses a
 * TopicMapStoreFactoryIF to create TopicMapStoreIF objects. This
 * class must be used with a commons-pool pool instance.
 *
 * @since 2.1
 */

public class StorePoolableObjectFactory implements org.apache.commons.pool.PoolableObjectFactory {

    // define a logging category.
    static Logger log = LoggerFactory.getLogger(StorePoolableObjectFactory.class.getName());

    // topic map store factory
    protected TopicMapStoreFactoryIF sfactory;

    // track all open stores
    public Collection<TopicMapStoreIF> stores = new HashSet<TopicMapStoreIF>();

    public StorePoolableObjectFactory(TopicMapStoreFactoryIF sfactory) {
        this.sfactory = sfactory;
    }

    public Object makeObject() throws Exception {
        // tell store factory to create a new store instance
        TopicMapStoreIF o = sfactory.createStore();
        log.debug("makeObject " + o);
        stores.add(o);
        return o;
    }

    public void destroyObject(Object o) throws Exception {
        log.debug("destroyObject " + o);
        AbstractTopicMapStore s = (AbstractTopicMapStore) o;
        stores.remove(s);
        // close topic map store
        if (s.isOpen())
            s.close(false);
    }

    public boolean validateObject(Object o) {
        log.debug("validateObject " + o);
        // ask store to validate itself
        AbstractTopicMapStore store = (AbstractTopicMapStore) o;
        boolean valid = store.validate();
        log.debug("validate: " + valid);
        return valid;
    }

    public void activateObject(Object o) throws Exception {
        log.debug("activateObject " + o);
    }

    public void passivateObject(Object o) throws Exception {
        log.debug("passivateObject " + o);
    }

}