/*
* Copyright 1999-2010 Luca Garulli (l.garulli--at--orientechnologies.com)
*
* Licensed 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 "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.orientechnologies.orient.core.storage;
import com.orientechnologies.common.concur.resource.OSharedContainerImpl;
import com.orientechnologies.common.concur.resource.OSharedResourceAdaptive;
import com.orientechnologies.common.concur.resource.OSharedResourceAdaptiveExternal;
import com.orientechnologies.orient.core.cache.OLevel2RecordCache;
import com.orientechnologies.orient.core.config.OGlobalConfiguration;
import com.orientechnologies.orient.core.config.OStorageConfiguration;
import com.orientechnologies.orient.core.serialization.serializer.OStringSerializerHelper;
public abstract class OStorageAbstract extends OSharedContainerImpl implements OStorage {
protected final String url;
protected final String mode;
protected OStorageConfiguration configuration;
protected String name;
protected volatile long version = 0;
protected OLevel2RecordCache level2Cache;
protected volatile boolean open = false;
protected OSharedResourceAdaptiveExternal lock = new OSharedResourceAdaptiveExternal(
OGlobalConfiguration.ENVIRONMENT_CONCURRENT.getValueAsBoolean());
public OStorageAbstract(final String iName, final String iFilePath, final String iMode) {
if (OStringSerializerHelper.contains(iName, '/'))
name = iName.substring(iName.lastIndexOf("/") + 1);
else
name = iName;
if (OStringSerializerHelper.contains(iName, ','))
throw new IllegalArgumentException("Invalid character in storage name: " + name);
level2Cache = new OLevel2RecordCache(this);
level2Cache.startup();
url = iFilePath;
mode = iMode;
}
public OStorageConfiguration getConfiguration() {
return configuration;
}
public boolean isClosed() {
return !open;
}
public boolean checkForRecordValidity(final OPhysicalPosition ppos) {
return ppos != null && ppos.version != -1;
}
public String getName() {
return name;
}
/**
* Returns the configured local Level-2 cache component. Cache component is always created even if not used.
*
* @return
*/
public OLevel2RecordCache getLevel2Cache() {
return level2Cache;
}
public String getURL() {
return url;
}
public void close() {
close(false);
}
/**
* Returns current storage's version as serial.
*/
public long getVersion() {
return version;
}
/**
* Update the storage's version
*/
protected void incrementVersion() {
++version;
}
public boolean dropCluster(final String iClusterName) {
return dropCluster(getClusterIdByName(iClusterName));
}
protected boolean checkForClose(final boolean iForce) {
if (!open)
return false;
final int remainingUsers = getUsers() > 0 ? removeUser() : 0;
return iForce || (!OGlobalConfiguration.STORAGE_KEEP_OPEN.getValueAsBoolean() && remainingUsers == 0);
}
public int getUsers() {
return lock.getUsers();
}
public int addUser() {
return lock.addUser();
}
public int removeUser() {
return lock.removeUser();
}
public OSharedResourceAdaptive getLock() {
return lock;
}
public long countRecords() {
long tot = 0;
for (OCluster c : getClusters())
if (c != null)
tot += c.getEntries();
return tot;
}
@Override
public String toString() {
return url != null ? url : "?";
}
}