/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2006-2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.backends.jeb;
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import org.opends.messages.Message;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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import org.opends.server.loggers.debug.DebugTracer;
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import static org.opends.messages.JebMessages.*;
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import com.sleepycat.je.*;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.Entry;
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/**
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* Represents the database containing the LDAP entries. The database key is
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* the entry ID and the value is the entry contents.
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*
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*/
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public class ID2Entry extends DatabaseContainer
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{
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/**
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* The tracer object for the debug logger.
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*/
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private static final DebugTracer TRACER = getTracer();
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/**
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* Parameters for compression and encryption.
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*/
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private DataConfig dataConfig;
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/**
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* Create a new ID2Entry object.
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*
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* @param name The name of the entry database.
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* @param dataConfig The desired compression and encryption options for data
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* stored in the entry database.
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* @param env The JE Environment.
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* @param entryContainer The entryContainer of the entry database.
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* @throws DatabaseException If an error occurs in the JE database.
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*
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*/
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ID2Entry(String name, DataConfig dataConfig,
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Environment env, EntryContainer entryContainer)
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throws DatabaseException
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{
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super(name, env, entryContainer);
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this.dataConfig = dataConfig;
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DatabaseConfig dbNodupsConfig = new DatabaseConfig();
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if(env.getConfig().getReadOnly())
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{
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dbNodupsConfig.setReadOnly(true);
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dbNodupsConfig.setAllowCreate(false);
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dbNodupsConfig.setTransactional(false);
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}
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else if(!env.getConfig().getTransactional())
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{
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dbNodupsConfig.setAllowCreate(true);
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dbNodupsConfig.setTransactional(false);
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dbNodupsConfig.setDeferredWrite(true);
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}
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else
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{
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dbNodupsConfig.setAllowCreate(true);
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dbNodupsConfig.setTransactional(true);
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}
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this.dbConfig = dbNodupsConfig;
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}
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/**
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* Convert an entry to its database format.
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*
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* @param entry The LDAP entry to be converted.
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* @return The database entry.
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*
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* @throws DirectoryException If a problem occurs while attempting to encode
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* the entry.
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*/
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private DatabaseEntry entryData(Entry entry)
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throws DirectoryException
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{
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byte[] entryBytes;
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entryBytes = JebFormat.entryToDatabase(entry, dataConfig);
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return new DatabaseEntry(entryBytes);
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}
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/**
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* Insert a record into the entry database.
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*
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* @param txn The database transaction or null if none.
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* @param id The entry ID which forms the key.
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* @param entry The LDAP entry.
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* @return true if the entry was inserted, false if a record with that
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* ID already existed.
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* @throws DatabaseException If an error occurs in the JE database.
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* @throws DirectoryException If a problem occurs while attempting to encode
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* the entry.
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*/
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public boolean insert(Transaction txn, EntryID id, Entry entry)
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throws DatabaseException, DirectoryException
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{
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DatabaseEntry key = id.getDatabaseEntry();
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DatabaseEntry data = entryData(entry);
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OperationStatus status;
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status = insert(txn, key, data);
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if (status != OperationStatus.SUCCESS)
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{
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return false;
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}
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return true;
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}
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/**
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* Write a record in the entry database.
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*
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* @param txn The database transaction or null if none.
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* @param id The entry ID which forms the key.
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* @param entry The LDAP entry.
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* @return true if the entry was written, false if it was not.
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* @throws DatabaseException If an error occurs in the JE database.
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* @throws DirectoryException If a problem occurs while attempting to encode
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* the entry.
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*/
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public boolean put(Transaction txn, EntryID id, Entry entry)
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throws DatabaseException, DirectoryException
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{
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DatabaseEntry key = id.getDatabaseEntry();
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DatabaseEntry data = entryData(entry);
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OperationStatus status;
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status = put(txn, key, data);
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if (status != OperationStatus.SUCCESS)
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{
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return false;
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}
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return true;
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}
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/**
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* Write a pre-formatted record into the entry database.
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*
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* @param txn The database transaction or null if none.
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* @param key The key containing a pre-formatted entry ID.
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* @param data The data value containing a pre-formatted LDAP entry.
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* @return true if the entry was written, false if it was not.
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* @throws DatabaseException If an error occurs in the JE database.
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*/
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public boolean putRaw(Transaction txn, DatabaseEntry key, DatabaseEntry data)
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throws DatabaseException
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{
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OperationStatus status;
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status = put(txn, key, data);
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if (status != OperationStatus.SUCCESS)
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{
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return false;
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}
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return true;
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}
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/**
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* Remove a record from the entry database.
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*
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* @param txn The database transaction or null if none.
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* @param id The entry ID which forms the key.
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* @return true if the entry was removed, false if it was not.
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* @throws DatabaseException If an error occurs in the JE database.
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*/
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public boolean remove(Transaction txn, EntryID id)
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throws DatabaseException
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{
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DatabaseEntry key = id.getDatabaseEntry();
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OperationStatus status = delete(txn, key);
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if (status != OperationStatus.SUCCESS)
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{
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return false;
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}
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return true;
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}
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/**
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* Fetch a record from the entry database.
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*
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* @param txn The database transaction or null if none.
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* @param id The desired entry ID which forms the key.
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* @return The requested entry, or null if there is no such record.
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* @throws JebException If an error occurs in the JE backend.
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* @throws DatabaseException If an error occurs in the JE database.
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*/
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public Entry get(Transaction txn, EntryID id)
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throws JebException, DatabaseException
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{
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DatabaseEntry key = id.getDatabaseEntry();
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DatabaseEntry data = new DatabaseEntry();
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OperationStatus status;
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status = read(txn, key, data,
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LockMode.DEFAULT);
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if (status != OperationStatus.SUCCESS)
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{
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return null;
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}
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byte[] entryBytes = data.getData();
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byte entryVersion = JebFormat.getEntryVersion(entryBytes);
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//Try to decode the entry based on the version number. On later versions,
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//a case could be written to upgrade entries if it is not the current
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//version
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Entry entry = null;
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switch(entryVersion)
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{
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case JebFormat.FORMAT_VERSION :
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try
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{
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entry = JebFormat.entryFromDatabase(entryBytes,
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entryContainer.getRootContainer().getCompressedSchema());
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}
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catch (Exception e)
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{
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Message message = ERR_JEB_ENTRY_DATABASE_CORRUPT.get(id.toString());
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throw new JebException(message);
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}
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break;
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//case 0x00 :
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// Call upgrade method? Call 0x00 decode method?
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default :
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Message message =
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ERR_JEB_INCOMPATIBLE_ENTRY_VERSION.get(id.toString(), entryVersion);
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throw new JebException(message);
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}
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if (entry != null)
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{
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entry.processVirtualAttributes();
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}
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return entry;
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}
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/**
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* Set the desired compression and encryption options for data
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* stored in the entry database.
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*
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* @param dataConfig The desired compression and encryption options for data
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* stored in the entry database.
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*/
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public void setDataConfig(DataConfig dataConfig)
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{
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this.dataConfig = dataConfig;
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}
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}
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