@Test
public void testAddIterator() throws IOException {
@SuppressWarnings("deprecation")
Job job = new Job();
AccumuloInputFormat.addIterator(
job, new IteratorSetting(1, "WholeRow", WholeRowIterator.class));
AccumuloInputFormat.addIterator(
job,
new IteratorSetting(
2, "Versions", "org.apache.accumulo.core.iterators.VersioningIterator"));
IteratorSetting iter =
new IteratorSetting(3, "Count", "org.apache.accumulo.core.iterators.CountingIterator");
iter.addOption("v1", "1");
iter.addOption("junk", "\0omg:!\\xyzzy");
AccumuloInputFormat.addIterator(job, iter);
List<IteratorSetting> list = AccumuloInputFormat.getIterators(job);
// Check the list size
assertTrue(list.size() == 3);
// Walk the list and make sure our settings are correct
IteratorSetting setting = list.get(0);
assertEquals(1, setting.getPriority());
assertEquals(
"org.apache.accumulo.core.iterators.user.WholeRowIterator", setting.getIteratorClass());
assertEquals("WholeRow", setting.getName());
assertEquals(0, setting.getOptions().size());
setting = list.get(1);
assertEquals(2, setting.getPriority());
assertEquals(
"org.apache.accumulo.core.iterators.VersioningIterator", setting.getIteratorClass());
assertEquals("Versions", setting.getName());
assertEquals(0, setting.getOptions().size());
setting = list.get(2);
assertEquals(3, setting.getPriority());
assertEquals("org.apache.accumulo.core.iterators.CountingIterator", setting.getIteratorClass());
assertEquals("Count", setting.getName());
assertEquals(2, setting.getOptions().size());
assertEquals("1", setting.getOptions().get("v1"));
assertEquals("\0omg:!\\xyzzy", setting.getOptions().get("junk"));
}
public static <K extends WritableComparable<?>, V extends Writable>
SortedKeyValueIterator<K, V> loadIterators(
IteratorScope scope,
SortedKeyValueIterator<K, V> source,
KeyExtent extent,
AccumuloConfiguration conf,
List<IteratorSetting> iterators,
IteratorEnvironment env)
throws IOException {
List<IterInfo> ssiList = new ArrayList<>();
Map<String, Map<String, String>> ssio = new HashMap<>();
for (IteratorSetting is : iterators) {
ssiList.add(new IterInfo(is.getPriority(), is.getIteratorClass(), is.getName()));
ssio.put(is.getName(), is.getOptions());
}
return loadIterators(scope, source, extent, conf, ssiList, ssio, env, true);
}
public ByteBuffer compress(IteratorSetting[] iterators) {
UnsynchronizedBuffer.Writer out = new UnsynchronizedBuffer.Writer(iterators.length * 8);
out.writeVInt(iterators.length);
for (IteratorSetting is : iterators) {
out.writeVInt(getSymbolID(is.getName()));
out.writeVInt(getSymbolID(is.getIteratorClass()));
out.writeVInt(is.getPriority());
Map<String, String> opts = is.getOptions();
out.writeVInt(opts.size());
for (Entry<String, String> entry : opts.entrySet()) {
out.writeVInt(getSymbolID(entry.getKey()));
out.writeVInt(getSymbolID(entry.getValue()));
}
}
return out.toByteBuffer();
}
public static TIteratorSetting toTIteratorSetting(IteratorSetting is) {
return new TIteratorSetting(
is.getPriority(), is.getName(), is.getIteratorClass(), is.getOptions());
}