ContextImpl.java

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package com.arcle.rmt.superwaba.model.imp.rqml;

import superwaba.ext.xplat.io.Storable;
import superwaba.ext.xplat.io.DataStream;

import com.arcle.rmt.superwaba.model.imp.*;
import com.arcle.rmt.rqml.*;

public class ContextImpl extends RQMLFirstClassImpl implements Context {
    public GenericMemento createMemento() {
        return new Memento(this);
    }

    //-----------------------------------------------------------------------
    // Context implementations

    public Origin getOrigin() {
        if (origin == null) {
            origin = createOriginImpl();
        }
        return origin;
    }



    public TextualData getTextualData() {
        if (textualData == null) {
            textualData = createTextualDataImpl();
        }
        return textualData;
    }

    //-----------------------------------------------------------------------
    // Factory Methods

    protected TextualDataImpl createTextualDataImpl() {
        return new TextualDataImpl();
    }

    protected OriginImpl createOriginImpl() {
        return new OriginImpl();
    }

    //-----------------------------------------------------------------------
    // Member Variables

    private TextualDataImpl textualData = null;

    private OriginImpl origin = null;


    //-----------------------------------------------------------------------
    // Inner Classes

    protected static class Memento extends RQMLFirstClassImpl.Memento {
        public Memento(ContextImpl originator) {
            super(originator);
        }

        public Storable getInstance() {
            // This memento is not directly stored in the Catalog as an
            // object, so this factory method is not required.
            return null;
        }

        public byte getID() {
            return DocumentImpl.CONTEXT_ID;
        }

        public void saveState(DataStream data) {
            super.saveState(data);
            final ContextImpl org = (ContextImpl) getOriginator();
            saveMementoable(org.origin, data);
            saveMementoable(org.textualData, data);

        }

        public void loadState(DataStream data) {
            super.loadState(data);
            final ContextImpl org = (ContextImpl) getOriginator();

            org.origin = (OriginImpl) loadMementoable(data, new MementoableFactory() {
                public Mementoable createOriginator() {
                    return org.createOriginImpl();
                }
            });

            org.textualData = (TextualDataImpl) loadMementoable(data, new MementoableFactory() {
                public Mementoable createOriginator() {
                    return org.createTextualDataImpl();
                }
            });
        }

    }
}

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