org.apache.openjpa.conf.MetaDataCacheMaintenance Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.conf;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import org.apache.openjpa.kernel.Bootstrap;
import org.apache.openjpa.kernel.Broker;
import org.apache.openjpa.kernel.BrokerFactory;
import org.apache.openjpa.kernel.Query;
import org.apache.openjpa.lib.util.Options;
import org.apache.openjpa.lib.log.Log;
import org.apache.openjpa.lib.conf.MapConfigurationProvider;
import org.apache.openjpa.lib.conf.ConfigurationProvider;
import org.apache.openjpa.meta.ClassMetaData;
import org.apache.openjpa.meta.MetaDataRepository;
import org.apache.openjpa.meta.QueryMetaData;
import org.apache.openjpa.meta.SequenceMetaData;
/**
* Performs maintenance tasks on the metadata caches accessible via the
* {@link CacheMarshaller} architecture.
*
* @since 1.1.0
*/
public class MetaDataCacheMaintenance {
private final BrokerFactory factory;
private final OpenJPAConfiguration conf;
private final boolean devpath;
private Log log;
public static void main(String[] args) {
Options opts = new Options();
args = opts.setFromCmdLine(args);
boolean devpath = opts.getBooleanProperty("scanDevPath", "ScanDevPath",
true);
ConfigurationProvider cp = new MapConfigurationProvider(opts);
BrokerFactory factory = Bootstrap.newBrokerFactory(cp, null);
try {
MetaDataCacheMaintenance maint = new MetaDataCacheMaintenance(
factory, devpath);
if (args.length != 1) {
usage();
return;
}
if ("store".equals(args[0]))
maint.store();
else if ("dump".equals(args[0]))
maint.dump();
else
usage();
} finally {
factory.close();
}
}
/**
* @deprecated logging is routed to the logging system now.
*/
public MetaDataCacheMaintenance(BrokerFactory factory, boolean devpath,
boolean verbose) {
this(factory, devpath);
}
/**
* @param factory The {@link BrokerFactory} for which cached metadata
* should be built.
* @param devpath Whether or not to scan the development environment paths
* to find persistent types to store.
*/
public MetaDataCacheMaintenance(BrokerFactory factory, boolean devpath) {
this.factory = factory;
this.conf = factory.getConfiguration();
this.devpath = devpath;
this.log = conf.getLog(OpenJPAConfiguration.LOG_TOOL);
}
public void setLog(Log log) {
this.log = log;
}
private static int usage() {
System.err.println("Usage: java MetaDataCacheMaintenance " +
"[-scanDevPath t|f] [- value] store | dump");
return -1;
}
/**
* The metadata repository for the factory that this instance was
* constructed with will be serialized, along with any query
* compilations etc. that have been created for the factory.
*/
public void store() {
MetaDataRepository repos = conf.getMetaDataRepositoryInstance();
repos.setSourceMode(MetaDataRepository.MODE_ALL);
Collection types = repos.loadPersistentTypes(devpath, null);
for (Iterator iter = types.iterator(); iter.hasNext(); )
repos.getMetaData((Class) iter.next(), null, true);
loadQueries();
log.info("The following data will be stored: ");
log(repos, conf.getQueryCompilationCacheInstance());
CacheMarshallersValue.getMarshallerById(conf, getClass().getName())
.store(new Object[] {
repos, conf.getQueryCompilationCacheInstance()
});
}
private void loadQueries() {
Broker broker = factory.newBroker();
try {
QueryMetaData[] qmds =
conf.getMetaDataRepositoryInstance().getQueryMetaDatas();
for (int i = 0; i < qmds.length; i++)
loadQuery(broker, qmds[i]);
} finally {
broker.close();
}
}
private void loadQuery(Broker broker, QueryMetaData qmd) {
try {
Query q = broker.newQuery(qmd.getLanguage(), null);
qmd.setInto(q);
q.compile();
} catch (Exception e) {
if (log.isTraceEnabled()) {
log.warn("Skipping named query " + qmd.getName() + ": "
+ e.getMessage(), e);
} else {
log.warn("Skipping named query " + qmd.getName() + ": "
+ e.getMessage());
}
}
}
public void dump() {
Object[] os = (Object[])
CacheMarshallersValue.getMarshallerById(conf, getClass().getName())
.load();
if (os == null) {
log.info("No cached data was found");
return;
}
MetaDataRepository repos = (MetaDataRepository) os[0];
Map qcc = (Map) os[1];
log.info("The following data was found: ");
log(repos, qcc);
}
private void log(MetaDataRepository repos, Map qcc) {
ClassMetaData[] metas = repos.getMetaDatas();
log.info(" Types: " + metas.length);
if (log.isTraceEnabled())
for (int i = 0; i < metas.length; i++)
log.trace(" " + metas[i].getDescribedType().getName());
QueryMetaData[] qmds = repos.getQueryMetaDatas();
log.info(" Queries: " + qmds.length);
if (log.isTraceEnabled())
for (int i = 0; i < qmds.length; i++)
log.trace(" " + qmds[i].getName() + ": "
+ qmds[i].getQueryString());
SequenceMetaData[] smds = repos.getSequenceMetaDatas();
log.info(" Sequences: " + smds.length);
if (log.isTraceEnabled())
for (int i = 0; i < smds.length; i++)
log.trace(" " + smds[i].getName());
log.info(" Compiled queries: "
+ (qcc == null ? "0" : "" + qcc.size()));
if (log.isTraceEnabled() && qcc != null)
for (Iterator iter = qcc.keySet().iterator(); iter.hasNext(); )
log.trace(" " + iter.next());
}
}