本文整理汇总了Java中org.apache.hadoop.hbase.regionserver.Region.getScanner方法的典型用法代码示例。如果您正苦于以下问题：Java Region.getScanner方法的具体用法？Java Region.getScanner怎么用？Java Region.getScanner使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hbase.regionserver.Region的用法示例。
在下文中一共展示了Region.getScanner方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: loadAll
import org.apache.hadoop.hbase.regionserver.Region; //导入方法依赖的package包/类
/**
* Loads all of the permission grants stored in a region of the {@code _acl_}
* table.
*
* @param aclRegion
* @return a map of the permissions for this table.
* @throws IOException
*/
static Map<byte[], ListMultimap<String,TablePermission>> loadAll(Region aclRegion)
throws IOException {
if (!isAclRegion(aclRegion)) {
throw new IOException("Can only load permissions from "+ACL_TABLE_NAME);
}
Map<byte[], ListMultimap<String, TablePermission>> allPerms =
new TreeMap<byte[], ListMultimap<String, TablePermission>>(Bytes.BYTES_RAWCOMPARATOR);
// do a full scan of _acl_ table
Scan scan = new Scan();
scan.addFamily(ACL_LIST_FAMILY);
InternalScanner iScanner = null;
try {
iScanner = aclRegion.getScanner(scan);
while (true) {
List<Cell> row = new ArrayList<Cell>();
boolean hasNext = iScanner.next(row);
ListMultimap<String,TablePermission> perms = ArrayListMultimap.create();
byte[] entry = null;
for (Cell kv : row) {
if (entry == null) {
entry = CellUtil.cloneRow(kv);
}
Pair<String,TablePermission> permissionsOfUserOnTable =
parsePermissionRecord(entry, kv);
if (permissionsOfUserOnTable != null) {
String username = permissionsOfUserOnTable.getFirst();
TablePermission permissions = permissionsOfUserOnTable.getSecond();
perms.put(username, permissions);
}
}
if (entry != null) {
allPerms.put(entry, perms);
}
if (!hasNext) {
break;
}
}
} finally {
if (iScanner != null) {
iScanner.close();
}
}
return allPerms;
}