/**
* OpenSpotLight - Open Source IT Governance Platform
*
* Copyright (c) 2009, CARAVELATECH CONSULTORIA E TECNOLOGIA EM INFORMATICA LTDA
* or third-party contributors as indicated by the @author tags or express
* copyright attribution statements applied by the authors. All third-party
* contributions are distributed under license by CARAVELATECH CONSULTORIA E
* TECNOLOGIA EM INFORMATICA LTDA.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
***********************************************************************
* OpenSpotLight - Plataforma de Governança de TI de Código Aberto
*
* Direitos Autorais Reservados (c) 2009, CARAVELATECH CONSULTORIA E TECNOLOGIA
* EM INFORMATICA LTDA ou como contribuidores terceiros indicados pela etiqueta
* @author ou por expressa atribuição de direito autoral declarada e atribuída pelo autor.
* Todas as contribuições de terceiros estão distribuídas sob licença da
* CARAVELATECH CONSULTORIA E TECNOLOGIA EM INFORMATICA LTDA.
*
* Este programa é software livre; você pode redistribuí-lo e/ou modificá-lo sob os
* termos da Licença Pública Geral Menor do GNU conforme publicada pela Free Software
* Foundation.
*
* Este programa é distribuído na expectativa de que seja útil, porém, SEM NENHUMA
* GARANTIA; nem mesmo a garantia implícita de COMERCIABILIDADE OU ADEQUAÇÃO A UMA
* FINALIDADE ESPECÍFICA. Consulte a Licença Pública Geral Menor do GNU para mais detalhes.
*
* Você deve ter recebido uma cópia da Licença Pública Geral Menor do GNU junto com este
* programa; se não, escreva para:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.openspotlight.storage.domain;
import static com.google.common.collect.Maps.newHashMap;
import static org.openspotlight.common.util.Assertions.checkNotEmpty;
import static org.openspotlight.common.util.Assertions.checkNotNull;
import java.io.InputStream;
import java.util.Map;
import java.util.Set;
import org.openspotlight.storage.StorageSessionImpl;
import org.openspotlight.storage.StorageSession;
import org.openspotlight.storage.domain.Property;
import org.openspotlight.storage.domain.PropertyContainer;
import com.google.inject.internal.ImmutableSet;
/**
* Internal (default) implementation of {@link PropertyContainer}. <br>
*
* @author feuteston
* @author porcelli
*/
public abstract class PropertyContainerImpl implements PropertyContainer {
private static final long TIMEOUT = 60 * 1000;
protected final Map<String, Property> propertiesByName = newHashMap();
protected long lastLoad;
protected PropertyContainerImpl(final boolean resetTimeout) {
lastLoad = resetTimeout ? -1 : System.currentTimeMillis();
}
/**
* Load properties only if internal cache is empty
*
* @param session the storage session
*/
private void loadPropertiesOnce(final StorageSession session) {
if (propertiesByName.isEmpty()) {
reloadProperties(session);
}
}
/**
* Invalidate cache and force to load all properties into it
*
* @param session the storage session
*/
private void reloadProperties(final StorageSession session) {
final boolean tooOld = lastLoad < (System.currentTimeMillis() + TIMEOUT);
final boolean empty = propertiesByName.isEmpty();
if (tooOld && empty) {
final Set<Property> result = ((StorageSessionImpl<?,?>) session).getProperties(this);
for (final Property property: result) {
propertiesByName.put(property.getPropertyName(), property);
}
lastLoad = System.currentTimeMillis();
}
}
//TODO check if this method is really needed once the Property class handles the same consitency
protected void verifyBeforeSet(final String propertyName) {}
/**
* {@inheritDoc}
*/
@Override
public Set<Property> getProperties(final StorageSession session)
throws IllegalArgumentException {
checkNotNull("session", session);
reloadProperties(session);
return ImmutableSet.copyOf(propertiesByName.values());
}
/**
* {@inheritDoc}
*/
@Override
public Property getProperty(final StorageSession session,
final String name)
throws IllegalArgumentException {
checkNotNull("session", session);
checkNotEmpty("name", name);
loadPropertiesOnce(session);
Property result = propertiesByName.get(name);
if (result == null) {
reloadProperties(session);
result = propertiesByName.get(name);
}
return result;
}
/**
* {@inheritDoc}
*/
@Override
public Set<String> getPropertyNames(final StorageSession session)
throws IllegalArgumentException {
checkNotNull("session", session);
reloadProperties(session);
return ImmutableSet.copyOf(propertiesByName.keySet());
}
/**
* {@inheritDoc}
*/
@Override
public byte[] getPropertyValueAsBytes(final StorageSession session,
final String name)
throws IllegalArgumentException {
checkNotNull("session", session);
checkNotEmpty("name", name);
final Property prop = getProperty(session, name);
if (prop != null) { return prop.getValueAsBytes(session); }
return null;
}
/**
* {@inheritDoc}
*/
@Override
public InputStream getPropertyValueAsStream(final StorageSession session,
final String name)
throws IllegalArgumentException {
checkNotNull("session", session);
checkNotEmpty("name", name);
final Property prop = getProperty(session, name);
if (prop != null) { return prop.getValueAsStream(session); }
return null;
}
/**
* {@inheritDoc}
*/
@Override
public String getPropertyValueAsString(final StorageSession session,
final String name)
throws IllegalArgumentException {
checkNotNull("session", session);
checkNotEmpty("name", name);
final Property prop = getProperty(session, name);
if (prop != null) { return prop.getValueAsString(session); }
return null;
}
/**
* {@inheritDoc}
*/
@Override
public Property setIndexedProperty(final StorageSession session,
final String name,
final String value)
throws IllegalArgumentException, IllegalStateException {
checkNotNull("session", session);
checkNotEmpty("name", name);
verifyBeforeSet(name);
Property currentProperty = getProperty(session, name);
if (currentProperty == null) {
currentProperty = PropertyImpl.createIndexed(name, this);
propertiesByName.put(name, currentProperty);
}
currentProperty.setStringValue(session, value);
return currentProperty;
}
/**
* {@inheritDoc}
*/
@Override
public Property setSimpleProperty(final StorageSession session, final String name, final byte[] value)
throws IllegalArgumentException, IllegalStateException {
checkNotNull("session", session);
checkNotEmpty("name", name);
verifyBeforeSet(name);
Property currentProperty = getProperty(session, name);
if (currentProperty == null) {
currentProperty = PropertyImpl.createSimple(name, this);
propertiesByName.put(name, currentProperty);
}
currentProperty.setBytesValue(session, value);
return currentProperty;
}
/**
* {@inheritDoc}
*/
@Override
public Property setSimpleProperty(final StorageSession session,
final String name,
final InputStream value)
throws IllegalArgumentException, IllegalStateException {
checkNotNull("session", session);
checkNotEmpty("name", name);
verifyBeforeSet(name);
Property currentProperty = getProperty(session, name);
if (currentProperty == null) {
currentProperty = PropertyImpl.createSimple(name, this);
propertiesByName.put(name, currentProperty);
}
currentProperty.setStreamValue(session, value);
return currentProperty;
}
/**
* {@inheritDoc}
*/
@Override
public Property setSimpleProperty(final StorageSession session,
final String name,
final String value)
throws IllegalArgumentException, IllegalStateException {
checkNotNull("session", session);
checkNotEmpty("name", name);
verifyBeforeSet(name);
Property currentProperty = getProperty(session, name);
if (currentProperty == null) {
currentProperty = PropertyImpl.createSimple(name, this);
propertiesByName.put(name, currentProperty);
}
currentProperty.setStringValue(session, value);
return currentProperty;
}
/**
* {@inheritDoc}
*/
@Override
public void forceReload() {
propertiesByName.clear();
lastLoad = -1;
}
}