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package com.sun.enterprise.deployment.node.connector;

import java.util.*;
import org.xml.sax.Attributes;
import com.sun.enterprise.deployment.Descriptor;
import com.sun.enterprise.deployment.ConnectorDescriptor;
import com.sun.enterprise.deployment.OutboundResourceAdapter;
import com.sun.enterprise.deployment.MessageListener;
import com.sun.enterprise.deployment.EnvironmentProperty;
import com.sun.enterprise.deployment.xml.ConnectorTagNames;
import com.sun.enterprise.deployment.xml.TagNames;
import com.sun.enterprise.deployment.node.DescriptorFactory;
import com.sun.enterprise.deployment.node.DeploymentDescriptorNode;
import com.sun.enterprise.deployment.node.ConfigurableNode;
import com.sun.enterprise.deployment.node.XMLElement;

import org.xml.sax.Attributes;
import org.w3c.dom.Node;

/**
 * This node is responsible for handling the Connector DTD related required-config-property XML tag
 *
 * @author  Sheetal Vartak
 * @version 
 */
public class RequiredConfigNode extends DeploymentDescriptorNode {

    private EnvironmentProperty config = null;

   /**
     * all sub-implementation of this class can use a dispatch table to map xml element to
     * method name on the descriptor class for setting the element value. 
     *  
     * @return the map with the element name as a key, the setter method as a value
     */    
    protected Map getDispatchTable() {    
        Map table = super.getDispatchTable();
        table.put(ConnectorTagNames.CONFIG_PROPERTY_NAME, "setName");
	return table;
    }    

    /**
    * @return the descriptor instance to associate with this XMLNode
    */    
    public Object getDescriptor() {
        if (config == null) {
            config = (EnvironmentProperty) DescriptorFactory.getDescriptor(getXMLPath());
        } 
        return config;
    } 

    /**
     * write the descriptor class to a DOM tree and return it
     *
     * @param parent node for the DOM tree
     * @param the descriptor to write
     * @return the DOM tree top node
     */    
    public Node writeDescriptor(Node parent, Descriptor descriptor) {

        if (! (descriptor instanceof MessageListener)) {
            throw new IllegalArgumentException(getClass() + " cannot handle descriptors of type " + descriptor.getClass());
        }
	Iterator configProps = null;
	if (descriptor instanceof MessageListener) {
	    configProps = ((MessageListener)descriptor).getConfigProperties().iterator();
	}

	//config property info
	for (;configProps.hasNext();) {
	    EnvironmentProperty config = (EnvironmentProperty) configProps.next();
	    Node configNode = appendChild(parent, ConnectorTagNames.REQUIRED_CONFIG_PROP);
            writeLocalizedDescriptions(configNode, config);
	    appendTextChild(configNode, ConnectorTagNames.CONFIG_PROPERTY_NAME, config.getName());  
	}
	return parent;
    }
}