Examples of org.odmg.Database.open()

org.odmg.Database.open()
Open the named database with the specified access mode. Attempts to open a database when it has already been opened will result in the throwing of the exception DatabaseOpenException. A DatabaseNotFoundException is thrown if the database does not exist. Some implementations may throw additional exceptions that are also derived from ODMGException. @param name The name of the database. @param accessMode The access mode, which should be one of the static fields:OPEN_READ_ONLY, OPEN_READ_WRITE, or OPEN_EXCLUSIVE. @exception ODMGException The database could not be opened.

     */
    public Implementation getInstance() throws ODMGException {
        Database db = (Database)this.databases.get( DEFAULT_CONNECTION );
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(DEFAULT_CONNECTION, DEFAULT_MODE);
            synchronized (this.databases) {
                this.databases.put( DEFAULT_CONNECTION + DEFAULT_MODE, db );
            }
        }
        return this.odmg;

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     */
    public Implementation getInstance(String connection, int mode) throws ODMGException {
        Database db = (Database)this.databases.get( connection + mode);
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(connection, mode);
            synchronized (this.databases) {
                this.databases.put( connection + mode, db );
            }
        }
        return this.odmg;

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     */
    public Implementation getInstance(String connection) throws ODMGException {
        Database db = (Database)this.databases.get( connection + DEFAULT_MODE);
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(connection, DEFAULT_MODE);
            synchronized (this.databases) {
                this.databases.put( connection + DEFAULT_MODE, db );
            }
        }
        return this.odmg;

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    public Implementation getInstance( int mode ) throws ODMGException 
    {
        Database db = (Database)this.databases.get( DEFAULT_CONNECTION+ mode);
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(DEFAULT_CONNECTION, mode);
            synchronized (this.databases) {
                this.databases.put( DEFAULT_CONNECTION+ mode, db );
            }
        }
        return this.odmg;

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     */
    public Implementation getInstance() throws ODMGException {
        Database db = (Database)this.databases.get( DEFAULT_CONNECTION );
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(DEFAULT_CONNECTION, DEFAULT_MODE);
            synchronized (this.databases) {
                this.databases.put( DEFAULT_CONNECTION + DEFAULT_MODE, db );
            }
        }
        return this.odmg;

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     */
    public Implementation getInstance(String connection, int mode) throws ODMGException {
        Database db = (Database)this.databases.get( connection + mode);
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(connection, mode);
            synchronized (this.databases) {
                this.databases.put( connection + mode, db );
            }
        }
        return this.odmg;

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     */
    public Implementation getInstance(String connection) throws ODMGException {
        Database db = (Database)this.databases.get( connection + DEFAULT_MODE);
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(connection, DEFAULT_MODE);
            synchronized (this.databases) {
                this.databases.put( connection + DEFAULT_MODE, db );
            }
        }
        return this.odmg;

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    public Implementation getInstance( int mode ) throws ODMGException 
    {
        Database db = (Database)this.databases.get( DEFAULT_CONNECTION+ mode);
        if(null == db ) {
            db = this.odmg.newDatabase();
            db.open(DEFAULT_CONNECTION, mode);
            synchronized (this.databases) {
                this.databases.put( DEFAULT_CONNECTION+ mode, db );
            }
        }
        return this.odmg;

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    public static void main(String[] args) throws Exception
    {
        Implementation odmg = OJB.getInstance();
        Database       db   = odmg.newDatabase();


        db.open("default", Database.OPEN_READ_WRITE);


        Product product = new Product();


        product.setName("Widget");
        product.setPrice(9.99);

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        Database       db   = odmg.newDatabase();


        // open database
        try
        {
            db.open(databaseName, Database.OPEN_READ_WRITE);
        }
        catch (ODMGException ex)
        {
            ex.printStackTrace();
        }

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