com.pavelvlasov.uml.xmi.ElementImpl.java Source code

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Here is the source code for com.pavelvlasov.uml.xmi.ElementImpl.java

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/*
 * umlapi 1.1.2
 * UML API 
 * Copyright (C) 2003  Pavel Vlasov
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * URL: http://www.pavelvlasov.com/Products/UmlApi/index.html
 * e-Mail: vlasov@pavelvlasov.com
 * 
 * Modified by Nat Melo. SPLab
     
 */
package com.pavelvlasov.uml.xmi;

import java.util.Iterator;

import org.apache.commons.jxpath.JXPathContext;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import util.AuxiliaryFunctionsXML;
import util.Constants;
import util.ConstantsXML;

import com.pavelvlasov.uml.ModelElement;

/**
 * @author Pavel Vlasov
 * @version $Revision$
 */
class ElementImpl implements com.pavelvlasov.uml.Element {

    ElementImpl(ModelElementImpl owner, Element holder) {
        this.owner = owner;
        this.holder = holder;
        this.model = owner.getModel();

        NodeList nodeList = holder.getElementsByTagName("type");
        if (nodeList.getLength() > 0) {
            setType(AuxiliaryFunctionsXML.filterAttributeType(nodeList.item(0).getAttributes().item(0).toString()));
        } else {
            setType(holder.getAttribute(ConstantsXML.TYPE_ONLY));
        }
    }

    // Changed here!
    ElementImpl(ModelImpl model, Element holder) {
        this.model = model;
        this.holder = holder;
        if (holder.hasAttribute(ConstantsXML.xmiType)) {
            if (holder.getAttribute(ConstantsXML.xmiType).equals(ConstantsXML.umlDotDot + Constants.PACKAGE)) {
                setType(AuxiliaryFunctionsXML.filterType(holder.getAttribute(ConstantsXML.xmiType)));
            }
        }
        NodeList nodeList = holder.getElementsByTagName("type");
        if (nodeList.getLength() > 0) {
            setType(AuxiliaryFunctionsXML.filterAttributeType(nodeList.item(0).getAttributes().item(0).toString()));
        } else {
            setType(holder.getAttribute(ConstantsXML.TYPE_ONLY));
        }
    }

    protected final Element holder;
    private JXPathContext jxPathContext;
    private ModelElement owner;

    /*
     * (non-Javadoc)
     * 
     * @see com.pavelvlasov.uml.ModelElement#id()
     */
    public String getId() {
        if (holder.hasAttribute(ConstantsXML.xmiID)) {
            return AuxiliaryFunctionsXML.getNodeID(holder);
        } else if (getOwner() != null) {
            return getOwner().getId() + "." + getName();
        } else {
            return "(undefined)";
        }
    }

    private JXPathContext getJXPathContext() {
        if (jxPathContext == null) {
            if (getOwner() == null) {
                jxPathContext = JXPathContext.newContext(this);
            } else {
                jxPathContext = JXPathContext.newContext(((ElementImpl) getOwner()).getJXPathContext(), this);
            }
            jxPathContext.setLenient(true);
        }
        return jxPathContext;
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.pavelvlasov.uml.ModelElement#getOwner()
     */
    public ModelElement getOwner() {
        return owner;
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.pavelvlasov.uml.ModelElement#iterate(java.lang.String)
     */
    public Iterator iterate(String xpath) {
        return getJXPathContext().iterate(xpath);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.pavelvlasov.uml.ModelElement#navigate(java.lang.String)
     */
    public Object navigate(String xpath) {
        return getJXPathContext().getValue(xpath);
    }

    private ModelImpl model;

    ModelImpl getModel() {
        return model;
    }

    private String type;

    /*
     * (non-Javadoc)
     * 
     * @see com.pavelvlasov.uml.ModelElement#name()
     */
    public String getName() {
        return AuxiliaryFunctionsXML.getNodeName(holder);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.pavelvlasov.uml.ModelElement#name()
     */
    void setName(String name) {
        holder.setAttribute("name", name);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.pavelvlasov.uml.ModelElement#getType()
     */
    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Object#equals(java.lang.Object)
     */
    public boolean equals(Object obj) {
        return (obj instanceof com.pavelvlasov.uml.Element)
                && getId().equals(((com.pavelvlasov.uml.Element) obj).getId());
    }

    // /**
    // * @return
    // */
    // Element getHolder() {
    // return holder;
    // }

}