source: trunk/greenstone3-extensions/gs3build/src/org/greenstone/gsdl3/gs3build/metadata/MetaElement.java@ 12188

package org.greenstone.gsdl3.gs3build.metadata;

import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;

import java.util.List;
import java.util.Map;
import java.util.ArrayList;
import java.util.HashMap;

import org.greenstone.gsdl3.gs3build.schema.Schema;
import org.greenstone.gsdl3.gs3build.schema.SchemaNode;

public class MetaElement
{
    Map    attributes;
    List   children;
    String name;

    public MetaElement(Element element, Schema schema)
    {   
        // basic setup
        this.attributes = new HashMap();
        this.children   = new ArrayList();
        this.name = element.getNodeName();
        StringBuffer contentBuffer = new StringBuffer();
        
        // split the name into namespace/workspace
        String workSpace = SchemaNode.getNamespace(name);
        name = SchemaNode.getElementName(name);

        // get attributes
        NamedNodeMap attributes = element.getAttributes();
        for (int a = 0; a < attributes.getLength(); a ++)
        {   Node attribute = attributes.item(a);

            this.attributes.put(attribute.getNodeName(), attribute.getNodeValue());
        }

        // get children
        NodeList children = element.getChildNodes();
        for (int c = 0; c < children.getLength(); c++)
        {   Node child = children.item(c);

            if (child.getNodeType() == org.w3c.dom.Node.ELEMENT_NODE)
            {   // make a child
                if (contentBuffer.length() > 0) {
                    this.children.add(contentBuffer.toString());
                    contentBuffer.setLength(0);
                }
                Object childElement = new MetaElement((Element) child, schema);
                this.children.add(childElement);
            }
            else
            {   // append to content if not an element - this may be wasteful & type of
                // element should be checked
                contentBuffer.append(child.getNodeValue());
            }
        }
        if (contentBuffer.length() > 0) {
            this.children.add(contentBuffer.toString());
        }
    }
}