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Berkeley DB Java Edition is a open source, transactional storage solution for Java applications. The Direct Persistence Layer (DPL) API is faster and easier to develop, deploy, and manage than serialized object files or ORM-based Java persistence solutions. The Collections API enhances the standard java.util.collections classes allowing them to be persisted to a local file system and accessed concurrently while protected by ACID transactions. Data is stored by serializing objects and managing class and instance data separately so as not to waste space. Berkeley DB Java Edition is the reliable drop-in solution for complex, fast, and scalable storage. Source for this release is in 'je-4.0.92-sources.jar', the Javadoc is located at 'http://download.oracle.com/berkeley-db/docs/je/4.0.92/'.

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/*-
 * Copyright (C) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
 *
 * This file was distributed by Oracle as part of a version of Oracle Berkeley
 * DB Java Edition made available at:
 *
 * http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html
 *
 * Please see the LICENSE file included in the top-level directory of the
 * appropriate version of Oracle Berkeley DB Java Edition for a copy of the
 * license and additional information.
 */

package com.sleepycat.je.jca.ra;

import java.io.Closeable;
import javax.resource.ResourceException;

import com.sleepycat.je.Database;
import com.sleepycat.je.DatabaseConfig;
import com.sleepycat.je.DatabaseException;
import com.sleepycat.je.Environment;
import com.sleepycat.je.SecondaryConfig;
import com.sleepycat.je.SecondaryDatabase;
import com.sleepycat.je.Transaction;

/**
 * A JEConnection provides access to JE services. See
 * <JEHOME>/examples/jca/HOWTO-**.txt and
 * <JEHOME>/examples/jca/simple/SimpleBean.java for more information on
 * how to build the resource adaptor and use a JEConnection.
 */
public class JEConnection implements Closeable {

    private JEManagedConnection mc;
    private JELocalTransaction txn;

    public JEConnection(JEManagedConnection mc) {
        this.mc = mc;
    }

    protected void setManagedConnection(JEManagedConnection mc,
                                        JELocalTransaction lt) {
        this.mc = mc;
        if (txn == null) {
            txn = lt;
        }
    }

    JELocalTransaction getLocalTransaction() {
        return txn;
    }

    void setLocalTransaction(JELocalTransaction txn) {
        this.txn = txn;
    }

    public Environment getEnvironment() {
        return mc.getEnvironment();
    }

    public Database openDatabase(String name, DatabaseConfig config)
        throws DatabaseException {

        return mc.openDatabase(name, config);
    }

    public SecondaryDatabase openSecondaryDatabase(String name,
                                                   Database primaryDatabase,
                                                   SecondaryConfig config)
        throws DatabaseException {

        return mc.openSecondaryDatabase(name, primaryDatabase, config);
    }

    public void removeDatabase(String databaseName)
        throws DatabaseException {

        mc.removeDatabase(databaseName);
    }

    public long truncateDatabase(String databaseName, boolean returnCount)
        throws DatabaseException {

        return mc.truncateDatabase(databaseName, returnCount);
    }

    public Transaction getTransaction()
        throws ResourceException {

        if (txn == null) {
            return null;
        }

        try {
            return txn.getTransaction();
        } catch (DatabaseException DE) {
            ResourceException ret = new ResourceException(DE.toString());
            ret.initCause(DE);
            throw ret;
        }
    }

    public void close() {
        mc.close();
    }
}