sebb wrote:
On 15/03/2009, Dan Fabulich <d...@fabulich.com> wrote:
The problem gets even more complicated if we tried to write a generic
"IntegrationTestApp" to work against multiple vendors. How would the
IntegrationTestApp know what column types are possible? How would it manage
access to the DataSource in a vendor-agnostic way? Would we have to add a
dozen (closed source?) DB drivers to our test classpath?
I thought that DBUtils used JDBC, which is a common API?
We still have to call a vendor-specific constructor to cook up a
DataSource. (Well, I guess we could just skip the DataSource and use a
Connection backed by a JDBC URL.)
And then there's the question of column types, though I suppose we could
make those command-line arguments? So I guess that leaves us with a test
app that looks something like:
public class IntegrationTestApp {
public static void main(String[] args) throws SQLException {
if (args.length < 2) printUsageAndExit();
String url = args[0];
Connection conn = DriverManager.getConnection(url);
QueryRunner runner = new QueryRunner();
runner.update(conn, "DROP TABLE dbutilstest");
StringBuffer sb = new StringBuffer("CREATE TABLE dbutilstest(");
for (int i = 1; i < args.length; i++) {
if (i != 1) sb.append(", ");
sb.append("col").append(i).append(' ').append(args[i]);
}
sb.append(')');
runner.update(conn, sb.toString());
sb = new StringBuffer("INSERT INTO dbutilstest VALUES(");
for (int i = 1; i < args.length; i++) {
if (i != 1) sb.append(", ");
sb.append('?');
}
sb.append(')');
runner.update(conn, sb.toString(), new Object[args.length-1]);
}
private static void printUsageAndExit() {
String className = IntegrationTestApp.class.getCanonicalName();
System.err.println("usage: java " + className
+ " <jdbcUrl> columnType[...]");
System.err.println("\nexample: java " + className
+ " jdbc:derby:/tmp/myDatabase;create=true varchar char bigint");
System.exit(1);
}
}
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