xmlcollectionimpl.java

Java的面向对象数据库系统的源代码

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
//
// $Id: XMLCollectionImpl.java,v 1.2 2003/11/20 23:18:42 per_nyfelt Exp $

package org.ozoneDB.xml.core;

import java.util.Map;
import java.util.HashMap;
import java.util.Set;
import java.util.HashSet;

import org.ozoneDB.OzoneObject;

import org.xmldb.api.base.Resource;

/**
 *
 * @author <a href="http://www.smb-tec.com">SMB</a>
 * @version $Revision: 1.2 $
 */
public class XMLCollectionImpl extends OzoneObject
                               implements XMLCollection {

    //
    // data
    //
    // XML documents in this collection, String as key, XMLContainer as value
    private Set xmlDocuments = null;
    private Map childCollections = null;
    private XMLCollection parentCollection = null;
    private String collectionName = null;

    public XMLCollectionImpl() {
        // the id's for the XML documents in this collection
        xmlDocuments = new HashSet();
        // child collections
        childCollections = new HashMap();
    }

    /**
    */
    public XMLCollection getParentCollection() {
        return parentCollection;
    }

    /**
     * Added to support parent-child collections
     */
    public void setParentCollection(XMLCollection parentCollection) {
        this.parentCollection = parentCollection;
    }

    /**
    */
    public String getName() {
        return collectionName;
    }

    /**
    */
    public void setName(String name) {
        collectionName = name;
    }

    /**
    */
    public int getChildCollectionCount() {
        return childCollections.size();
    }

    /**
    */
    public synchronized String[] listChildCollections() {
        return (String[]) childCollections.keySet().toArray( new String[childCollections.keySet().size()] );
    }

    /**
    */
    public XMLCollection getChildCollection( String name ) {
        return (XMLCollection)childCollections.get(name);
    }

    public int getResourceCount() {
        return xmlDocuments.size();
    }

    public Set getResources() {
        return xmlDocuments;
    }

    public boolean hasResource(String id) {
        return xmlDocuments.contains(id);
    }

    public void addResource(String id) {
        System.out.println("XMLCollectionImpl.addResource() - Adding container to Set");
        xmlDocuments.add(id);
    }

    public void storeResource( String id, Resource res ) {
        System.out.println("XMLCOllectionImpl.storeResource() - Dont know what to do here");
    }

    /**
     * Added to support parent-child collections
     */
    public void setChildCollection(String childName, XMLCollection childCollection) {
        childCollections.put(childName,childCollection);
    }
}