package com.c2kernel.collection;

import java.util.StringTokenizer;

import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.entity.proxy.EntityProxy;
import com.c2kernel.lookup.EntityPath;
import com.c2kernel.lookup.InvalidEntityPathException;
import com.c2kernel.persistency.ClusterStorage;
import com.c2kernel.process.Gateway;
import com.c2kernel.property.Property;
import com.c2kernel.utils.CastorHashMap;
import com.c2kernel.utils.KeyValuePair;
import com.c2kernel.utils.Logger;


/**
* @version $Revision: 1.10 $ $Date: 2004/10/21 08:02:23 $
* @author  $Author: abranson $
*/


public class DependencyMember implements CollectionMember
{

    private int mEntityKey    = -1;
    private EntityProxy mEntity = null; 
    private int mId			= -1;
	private CastorHashMap mProperties = null;
	private String mClassProps;


   /**************************************************************************
    *
    **************************************************************************/
    public DependencyMember()
    {
        mEntityKey = -1;
        mProperties = new CastorHashMap();
    }


    public void setEntityKey(int entityKey)
    {
        mEntityKey = entityKey;
        mEntity = null; 
    }

    public int getEntityKey()
    {
        return mEntityKey;
    }

	public void setProperties(CastorHashMap props)
	{
		mProperties = props;
	}

	public CastorHashMap getProperties()
	{
		return mProperties;
	}
    
    public KeyValuePair[] getKeyValuePairs()
    {
        return mProperties.getKeyValuePairs();
    }
    public void setKeyValuePairs(KeyValuePair[] pairs)
    {
        mProperties.setKeyValuePairs(pairs);
    }

	public int getID() {
		return mId;
	}

	public void setID(int id) {
		mId = id;
	}

    public void setClassProps(String props)
    {
        mClassProps = props;
    }

    public String getClassProps()
    {
        return mClassProps;
    }

    public void assignEntity(int entityKey) throws MembershipException
    {
        if (entityKey > -1) {
            if (mClassProps == null || getProperties() == null)
                throw new MembershipException("ClassProps not yet set. Cannot check membership validity.");
                
            //for each mandatory prop check if its in the member property and has the matching value
            StringTokenizer sub = new StringTokenizer(mClassProps, ",");
            while (sub.hasMoreTokens())
            {
                String aClassProp = sub.nextToken();   
                try {                     
                    String memberValue = (String)getProperties().get(aClassProp);         
                    Property entityProperty = (Property)Gateway.getStorage().get(entityKey, ClusterStorage.PROPERTY+"/"+aClassProp, null); 
                    if (entityProperty == null)
                        throw new MembershipException("Property "+aClassProp+ " does not exist for entityKey=" + entityKey );
                    if (!entityProperty.getValue().equalsIgnoreCase(memberValue))
                        throw new MembershipException("DependencyMember::checkProperty() Values of mandatory prop "+aClassProp+" do not match " + entityProperty.getValue()+"!="+memberValue);
                 }
                catch (Exception ex)                
                {
                    Logger.error(ex);
                    throw new MembershipException("Error checking properties");
                }
            }           
        }
        
        mEntityKey = entityKey;
        mEntity = null;
    }
    
    public void clearEntity() {
        mEntityKey = -1;
        mEntity = null;
    }
    
    public EntityProxy resolveEntity() throws ObjectNotFoundException {
        if (mEntity == null) {
            try {
                EntityPath path = new EntityPath(mEntityKey);
                mEntity = Gateway.getProxyManager().getProxy(path);
            } catch (InvalidEntityPathException ex) {
                throw new ObjectNotFoundException("No member defined", "");
            }
        }
        return mEntity;
        
    }


}