Java BatchDeleter类代码示例

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
/**
 * Remove the given element's properties from the index.
 * @param element
 */
public void removeElementFromIndex(Element element) {
  BatchDeleter deleter = null;

  try {
    deleter = getDeleter();
    deleter.setRanges(Collections.singleton(new Range()));

    IteratorSetting is = new IteratorSetting(10, "getEdgeFilter", RegExFilter.class);
    RegExFilter.setRegexs(is, null, null,
        "^"+Pattern.quote(element.getId().toString())+"$", null, false);
    deleter.addScanIterator(is);
    deleter.delete();
    deleter.close();
  } catch (Exception e) {
    throw new AccumuloGraphException(e);
  } finally {
    if (deleter != null) {
      deleter.close();
    }
  }
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
/**
 * Remove the given vertex.
 * Note: This uses a BatchDeleter rather than {@link Mutator}
 * because it is more efficient.
 * @param vertex
 */
public void deleteVertex(Vertex vertex) {
  BatchDeleter deleter = null;

  try {
    deleter = getDeleter();
    deleter.setRanges(Arrays.asList(Range.exact((String) vertex.getId())));
    deleter.delete();

  } catch (Exception e) {
    throw new AccumuloGraphException(e);
  } finally {
    if (deleter != null) {
      deleter.close();
    }
  }
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
public BatchDeleter createBatchDeleter(
		final String tableName,
		final String... additionalAuthorizations )
		throws TableNotFoundException {
	return connector.createBatchDeleter(
			getQualifiedTableName(tableName),
			new Authorizations(
					getAuthorizations(additionalAuthorizations)),
			numThreads,
			new BatchWriterConfig().setMaxWriteThreads(
					numThreads).setMaxMemory(
					byteBufferSize).setTimeout(
					timeoutMillis,
					TimeUnit.MILLISECONDS));
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
protected void addToBatch(
		final Closeable deleter,
		final List<ByteArrayId> ids )
		throws Exception {
	final List<Range> rowRanges = new ArrayList<Range>();
	for (final ByteArrayId id : ids) {
		rowRanges.add(Range.exact(new Text(
				id.getBytes())));
	}
	if (deleter instanceof ClosableBatchDeleter) {
		final BatchDeleter batchDeleter = ((ClosableBatchDeleter) deleter).getDeleter();
		batchDeleter.setRanges(rowRanges);
		batchDeleter.delete();
	}
	else {
		LOGGER.error("Deleter incompatible with data store type");
	}
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
public static void clearTable(Connector connector, String table) throws AccumuloException, TableNotFoundException, AccumuloSecurityException {

        Authorizations userAuths = connector.securityOperations().getUserAuthorizations(connector.whoami());

        BatchDeleter batchDelete = connector.createBatchDeleter(table, userAuths, 1, new BatchWriterConfig());
        batchDelete.setRanges(Collections.singleton(new Range()));
        batchDelete.delete();
        batchDelete.close();

        batchDelete = connector.createBatchDeleter(table, userAuths, 1, new BatchWriterConfig());
        batchDelete.setRanges(Collections.singleton(new Range()));
        batchDelete.delete();
        batchDelete.close();

        connector.tableOperations().compact(table, new Text("\u0000"), new Text("\uffff"), true, true);
    }
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
private void purge(final String tableName, final String[] auths) throws TableNotFoundException, MutationsRejectedException {
    if (tableExists(tableName)) {
        logger.info("Purging accumulo table: " + tableName);
        final BatchDeleter batchDeleter = createBatchDeleter(tableName, new Authorizations(auths));
        try {
            batchDeleter.setRanges(Collections.singleton(new Range()));
            batchDeleter.delete();
        } finally {
            batchDeleter.close();
        }
    }
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
@Deprecated
public BatchDeleter createBatchDeleter(String tableName, Authorizations authorizations, int numQueryThreads, long maxMemory, long maxLatency,
    int maxWriteThreads) throws TableNotFoundException {
  return createBatchDeleter(tableName, authorizations, numQueryThreads, new BatchWriterConfig().setMaxLatency(maxLatency, TimeUnit.MILLISECONDS)
      .setMaxMemory(maxMemory).setMaxWriteThreads(maxWriteThreads));
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
public <T extends Element> void dropKeyIndex(String key, Class<T> elementClass) {
  // TODO Move below to somewhere appropriate.
  if (elementClass == null) {
    throw ExceptionFactory.classForElementCannotBeNull();
  }

  globals.getIndexMetadataWrapper().clearKeyMetadataEntry(key, elementClass);

  String table = null;
  if (elementClass.equals(Vertex.class)) {
    table = globals.getConfig().getVertexKeyIndexTableName();
  } else {
    table = globals.getConfig().getEdgeKeyIndexTableName();
  }
  BatchDeleter bd = null;
  try {
    bd = globals.getConfig().getConnector().createBatchDeleter(table, globals.getConfig().getAuthorizations(), globals.getConfig().getMaxWriteThreads(), globals.getConfig().getBatchWriterConfig());
    bd.setRanges(Collections.singleton(new Range()));
    bd.fetchColumnFamily(new Text(key));
    bd.delete();
  } catch (Exception e) {
    throw new AccumuloGraphException(e);
  } finally {
    if (bd != null)
      bd.close();
  }
  globals.checkedFlush();
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
public static void deleteElementRanges(BatchDeleter deleter, Element... elements) {
  List<Range> ranges = new LinkedList<Range>();

  for (Element element : elements) {
    ranges.add(new Range(element.getId().toString()));
  }
  deleter.setRanges(ranges);

  try {
    deleter.delete();
  } catch (Exception e) {
    throw new AccumuloGraphException(e);
  }
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
protected BatchDeleter getDeleter() {
  try {
    return globals.getConfig().getConnector().createBatchDeleter(tableName,
        globals.getConfig().getAuthorizations(), globals.getConfig().getMaxWriteThreads(),
        globals.getConfig().getBatchWriterConfig());
  } catch (Exception e) {
    throw new AccumuloGraphException(e);
  }
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
public boolean deleteAll(
		final String tableName,
		final String columnFamily,
		final String... additionalAuthorizations ) {
	BatchDeleter deleter = null;
	try {
		deleter = createBatchDeleter(
				tableName,
				additionalAuthorizations);
		deleter.setRanges(Arrays.asList(new Range()));
		deleter.fetchColumnFamily(new Text(
				columnFamily));
		deleter.delete();
		return true;
	}
	catch (final TableNotFoundException | MutationsRejectedException e) {
		LOGGER.warn(
				"Unable to delete row from table [" + tableName + "].",
				e);
		return false;
	}
	finally {
		if (deleter != null) {
			deleter.close();
		}
	}

}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
protected boolean deleteAll(
		final String tableName,
		final String columnFamily,
		final String... additionalAuthorizations ) {
	BatchDeleter deleter = null;
	try {
		deleter = accumuloOperations.createBatchDeleter(
				tableName,
				additionalAuthorizations);

		deleter.setRanges(Arrays.asList(new Range()));
		deleter.fetchColumnFamily(new Text(
				columnFamily));
		deleter.delete();
		return true;
	}
	catch (final TableNotFoundException | MutationsRejectedException e) {
		LOGGER.warn(
				"Unable to delete row from table [" + tableName + "].",
				e);
		return false;
	}
	finally {
		if (deleter != null) {
			deleter.close();
		}
	}

}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
protected CloseableIterator<T> initCloseableIterator(
		ScannerBase scanner,
		Iterator it ) {
	return new CloseableIteratorWrapper(
			new Closeable() {
				boolean closed = false;

				@Override
				public void close()
						throws IOException {
					if (!closed) {
						if (scanner instanceof BatchDeleter) {
							try {
								((BatchDeleter) scanner).delete();
							}
							catch (MutationsRejectedException | TableNotFoundException e) {
								LOGGER.warn(
										"Unable to delete rows by query constraints",
										e);
							}
						}
						scanner.close();
					}
					closed = true;
				}
			},
			it);
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
protected ScannerBase createScanner(
		AccumuloOperations accumuloOperations,
		String tableName,
		boolean batchScanner,
		String... authorizations )
		throws TableNotFoundException {
	BatchDeleter deleter = accumuloOperations.createBatchDeleter(
			tableName,
			authorizations);
	deleter.removeScanIterator(BatchDeleter.class.getName() + ".NOVALUE");
	return deleter;
}
 

import org.apache.accumulo.core.client.BatchDeleter; //导入依赖的package包/类
@Override
protected CloseableIterator<Object> initCloseableIterator(
		ScannerBase scanner,
		Iterator it ) {
	return new CloseableIteratorWrapper(
			new Closeable() {
				boolean closed = false;

				@Override
				public void close()
						throws IOException {
					if (!closed) {
						if (scanner instanceof BatchDeleter) {
							try {
								((BatchDeleter) scanner).delete();
							}
							catch (MutationsRejectedException | TableNotFoundException e) {
								LOGGER.warn(
										"Unable to delete rows by query constraints",
										e);
							}
						}
						scanner.close();
					}
					closed = true;
				}
			},
			it);
}