To build:
    Although this is a JDBC app, it still requires JPA -- the mock
    entity manager is used to create the dummy data which is then
    inserted into the database via JDBC. In your environment, set
    JAVAX_PERSISTENCE=path_to/javax.persistence.jar

    Statement caching in JDBC is driver dependent. The sample application
    includes commands to set the Oracle JDBC driver to perform
    statement caching, and hence requires you to set this environment:
    JDBC_JAR=/path_to/ojdbc6.jar

    If you are using a different database, you will have to edit the
    sample application and remove the statement caching calls to the
    Oracle JDBC driver (and, depending on your database, replace them
    with alternate calls).

    In any case, you will need to set JDBC_JAR to the JDBC driver you
    are using so that it can be found at runtime.

To run:
    Running this requires a database and JDBC driver. The example
    does not set up the schema for the database, so before running
    the test (each time), you must use the stock.sql file to drop and
    create the schema for your database. [The sample syntax is for Oracle
    XE; other databases may need to tweak the schema.][

    java <jvmargs> -jar jars/StockCreateJDBC.jar \
        jdbc_url dbuser dbpassword nThreads nStocks \
        startDate endDate autocommit nTransactions batch

    where 
    jdbc_url -- the JDBC URL for your database
    dbuser -- user to log in as
    dbpassword -- password to log in with
    nThreads -- Number of threads to use to populate in parallel
    nStocks -- Number of stock symbols to generate
    startDate -- Starting date for range
    endDate -- Ending date for range
    autocommit -- true or false to set/unset autocommit
    nTransactions -- number of transactions in a commit or batch. This
        affects both autocommit and batching -- if autocommit is false,
	commit will be called after each nTrasaction inserts. If batching
	is true, the batch will be sent when its size is nTransactions.
    batch -- wheter or not batching is enabled

Notes on Examples:

Example 11-1:
    The sample database is created with this command line (assuming Oracle
    XE is installed on your local machine):

    java -jar jars/StockCreateJDBC.jar jdbc:oracle:thin:@localhost:1521:XE \
        stock stock 1 128 1/1/13 12/1/13 false 1000000 true

    Those last three parameters control the lines in the table:
    Autocommit; no batching: true 1000000 false
    1 commit/stock: false 1 false
    1 commit/all: false 1000000 false
    1 batch/commit/stock: true 1 true
    1 batch/commit: false 1 true
    1 batch/commit: false 1000000 true