package org.litesoft.changemanagement;

import java.io.*;
import java.util.*;

import org.litesoft.changemanagement.nonpublic.*;

public final class ServerStateChangeSet implements IServerStateChangeSet,
                                                   Serializable
{
    private Serializable mSourceUniqueID;
    private String mSourceClassname;
    private Map<String, Serializable> mXtraData;
    private List<ServerStateChange> mChanges;

    public ServerStateChangeSet( Serializable pSourceUniqueID, String pSourceClassname,
                                 ServerStateChange pChange )
    {
        mSourceUniqueID = pSourceUniqueID;
        mSourceClassname = pSourceClassname;
        mXtraData = new HashMap<String, Serializable>();
        createChanges().add( pChange );
    }

    public ServerStateChangeSet( ServerStateChangeSet pSource, List<ServerStateChange> pUnmodifiableChanges )
    {
        this.mSourceUniqueID = pSource.mSourceUniqueID;
        this.mSourceClassname = pSource.mSourceClassname;
        this.mXtraData = pSource.mXtraData;
        mChanges = pUnmodifiableChanges;
    }

    protected ServerStateChangeSet( ServerStateChangeCollector pCollector )
    {
        this.mSourceUniqueID = pCollector.mSourceUniqueID;
        this.mSourceClassname = pCollector.mSourceClassname;
        this.mXtraData = new HashMap<String, Serializable>( pCollector.mXtraData );
        createChanges().addAll( pCollector.mChanges );
    }

    private ArrayList<ServerStateChange> createChanges()
    {
        ArrayList<ServerStateChange> rv = new ArrayList<ServerStateChange>();
        mChanges = Collections.unmodifiableList( rv );
        return rv;
    }

    public Serializable getSourceUniqueID()
    {
        return mSourceUniqueID;
    }

    public String getSourceClassname()
    {
        return mSourceClassname;
    }

    public Serializable getXtraData( Class pForKey )
    {
        return (pForKey == null) ? null : mXtraData.get( pForKey.getName() );
    }

    public List<ServerStateChange> getChanges()
    {
        return mChanges;
    }

    public String toString()
    {
        return Helper.toString( mSourceUniqueID, mSourceClassname, mXtraData, mChanges );
    }

    static final long serialVersionUID = -126548732321783478L;

    @Deprecated // for serialization
    public ServerStateChangeSet()
    {
    }
}