Package org.apache.isis.runtimes.dflt.objectstores.dflt.internal.commands

Source Code of org.apache.isis.runtimes.dflt.objectstores.dflt.internal.commands.AbstractInMemoryPersistenceCommand

/*
*  Licensed to the Apache Software Foundation (ASF) under one
*  or more contributor license agreements.  See the NOTICE file
*  distributed with this work for additional information
*  regarding copyright ownership.  The ASF licenses this file
*  to you under the Apache License, Version 2.0 (the
*  "License"); you may not use this file except in compliance
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*
*        http://www.apache.org/licenses/LICENSE-2.0
*
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*  specific language governing permissions and limitations
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package org.apache.isis.runtimes.dflt.objectstores.dflt.internal.commands;

import org.apache.log4j.Logger;

import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
import org.apache.isis.runtimes.dflt.objectstores.dflt.internal.ObjectStoreInstances;
import org.apache.isis.runtimes.dflt.objectstores.dflt.internal.ObjectStorePersistedObjects;
import org.apache.isis.runtimes.dflt.runtime.persistence.objectstore.transaction.PersistenceCommandAbstract;
import org.apache.isis.runtimes.dflt.runtime.transaction.ObjectPersistenceException;

public abstract class AbstractInMemoryPersistenceCommand extends PersistenceCommandAbstract {

    private final static Logger LOG = Logger.getLogger(AbstractInMemoryPersistenceCommand.class);

    private final ObjectStorePersistedObjects persistedObjects;

    public AbstractInMemoryPersistenceCommand(final ObjectAdapter adapter, final ObjectStorePersistedObjects persistedObjects) {
        super(adapter);
        this.persistedObjects = persistedObjects;
    }

    protected void save(final ObjectAdapter adapter) throws ObjectPersistenceException {
        final ObjectSpecification specification = adapter.getSpecification();
        if (LOG.isDebugEnabled()) {
            LOG.debug("   saving object " + adapter + " as instance of " + specification.getShortIdentifier());
        }
        final ObjectStoreInstances ins = instancesFor(specification);
        ins.save(adapter); // also sets the version
    }

    protected void destroy(final ObjectAdapter adapter) {
        final ObjectSpecification specification = adapter.getSpecification();
        if (LOG.isDebugEnabled()) {
            LOG.debug("   destroy object " + adapter + " as instance of " + specification.getShortIdentifier());
        }
        final ObjectStoreInstances ins = instancesFor(specification);
        ins.remove(adapter.getOid());
    }

    private ObjectStoreInstances instancesFor(final ObjectSpecification spec) {
        return persistedObjects.instancesFor(spec);
    }
}
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