}
public void execute(String... sparams) {
try {
if (sparams == null || sparams.length < 1 || sparams[0] == null) {
throw new MigrationException("The script command requires a range of versions from v1 - v2.");
}
StringTokenizer parser = new StringTokenizer(sparams[0]);
if (parser.countTokens() != 2) {
throw new MigrationException("The script command requires a range of versions from v1 - v2.");
}
BigDecimal v1 = new BigDecimal(parser.nextToken());
BigDecimal v2 = new BigDecimal(parser.nextToken());
boolean undo = v1.compareTo(v2) > 0;
Properties variables = environmentProperties();
List<Change> migrations = getMigrations();
Collections.sort(migrations);
if (undo) {
Collections.reverse(migrations);
}
for (Change change : migrations) {
if (shouldRun(change, v1, v2)) {
printStream.println("-- " + change.getFilename());
File file = scriptFile(change.getFilename());
FileReader fileReader = new FileReader(file);
MigrationReader migrationReader = new MigrationReader(fileReader, undo, variables);
char[] cbuf = new char[1024];
int l;
while ((l = migrationReader.read(cbuf)) == cbuf.length) {
printStream.print(new String(cbuf, 0, l));
}
printStream.print(new String(cbuf, 0, l - 1));
printStream.println();
printStream.println();
printStream.println(undo ? generateVersionDelete(change) : generateVersionInsert(change));
printStream.println();
}
}
} catch (IOException e) {
throw new MigrationException("Error generating script. Cause: " + e, e);
}
}