org.jdbcluster.domain.DomainConfigImpl.java Source code

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Here is the source code for org.jdbcluster.domain.DomainConfigImpl.java

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/*
 * Copyright 2002-2005 the original author or authors.
 * 
 * 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 org.jdbcluster.domain;

import java.util.HashMap;
import java.util.List;

import org.dom4j.DocumentException;
import org.dom4j.Node;
import org.jdbcluster.JDBClusterConfigurationBase;
import org.jdbcluster.exception.ConfigurationException;

/**
 * parses Domain Dependancy Configuration
 * @author Christopher Schmidt
 *
 */
public class DomainConfigImpl extends JDBClusterConfigurationBase implements DomainConfig {

    /**
     * holds all entries of Domain Dependancy Configuration
     */
    HashMap<String, EntrySet> dependancies;

    /**
     * create "emty" Object
     *
     */
    public DomainConfigImpl() {
    }

    /**
     * calls setConfiguration direcly 
     * @param config
     */
    public DomainConfigImpl(String config) {
        this.setConfiguration(config);
    }

    /**
     * retreive Configuration
     * @return path to configuration xml file
     */
    public String getConfiguration() {
        return configuration;
    }

    /**
     * starts parsing process of entries in 
     * configuration xml file
     * @param configuration
     */
    @SuppressWarnings("unchecked")
    public void setConfiguration(String configuration) {
        this.configuration = configuration;
        dependancies = new HashMap<String, EntrySet>();
        try {
            document = read(configuration);
        } catch (DocumentException e) {
            e.printStackTrace();
            throw new ConfigurationException("Error in DomainConfig File", e);
        }

        String xPathDomains = "//jdbcluster/domaindependancy/domain";
        List<Node> domainNodes = document.selectNodes(xPathDomains);
        if (domainNodes == null)
            return;

        // iterate over all configured "domain" elements
        for (Node domainNode : domainNodes) {
            String domainId = domainNode.valueOf("@domainid");
            List<Node> domEntryNodes = domainNode.selectNodes("entry");
            EntrySet es = new EntrySet(domainId, domEntryNodes);
            dependancies.put(domainId, es);
        }
    }

    public EntrySet getEntrySet(String domainId) {
        return dependancies.get(domainId);
    }

    public String getDomainListClass(String domainId) {
        String xPathDomain = "//jdbcluster/domaindependancy/domain[@domainid='" + domainId + "']";
        Node node = document.selectSingleNode(xPathDomain);

        if (node == null) {
            return null;
        }
        return node.valueOf("@domainlistclass");
    }
}