@Override
public DrillTable create(String key) {
try {
FileSelection fileSelection = FileSelection.create(fs, config.getLocation(), key);
if (fileSelection == null) return null;
if (fileSelection.containsDirectories(fs)) {
for (FormatMatcher m : dirMatchers) {
try {
Object selection = m.isReadable(fileSelection);
if (selection != null)
return new DynamicDrillTable(plugin, storageEngineName, selection);
} catch (IOException e) {
logger.debug("File read failed.", e);
}
}
fileSelection = fileSelection.minusDirectories(fs);
}
for (FormatMatcher m : fileMatchers) {
Object selection = m.isReadable(fileSelection);
if (selection != null) return new DynamicDrillTable(plugin, storageEngineName, selection);
}
return null;
} catch (IOException e) {
logger.debug(
"Failed to create DrillTable with root {} and name {}", config.getLocation(), key, e);
}
return null;
}
@Test
public void testCreateReturnsNullWhenArgumentsAreIllegal() {
for (final Object statuses : new Object[] {null, EMPTY_STATUSES}) {
for (final Object files : new Object[] {null, EMPTY_FILES}) {
for (final Object root : new Object[] {null, EMPTY_ROOT}) {
final FileSelection selection =
FileSelection.create(
(List<FileStatus>) statuses, (List<String>) files, (String) root);
assertNull(selection);
}
}
}
}
@Override
public GroupScan createNewGroupScan(List<String> newFiles) throws IOException {
final FileSelection newSelection = FileSelection.create(null, newFiles, getBaseTableLocation());
final FileGroupScan newScan = ((FileGroupScan) scanRel.getGroupScan()).clone(newSelection);
return newScan;
}