Package org.apache.drill.exec.util

Interface Summary

Interface	Description
CallBack

Class Summary

Class	Description
ApproximateStringMatcher
ArrayWrappedIntIntMap	Simple Map type data structure for storing entries of (int -> int) mappings where the max key value is below 2^16 to avoid hashing keys and use direct array index reference for retrieving the values.
AssertionUtil
BatchPrinter	Tool for printing the content of record batches to screen.
ByteBufUtil
ByteBufUtil.HadoopWritables	Modeled after org.apache.hadoop.io.WritableUtils.
DecimalUtility
DrillExceptionUtilTest
DrillFileSystemUtil	In Drill file system all directories and files that start with dot or underscore is ignored.
DrillFileSystemUtilTest
EncodedSchemaPathSet	This class provided utility methods to encode and decode a set of user specified SchemaPaths to a set of encoded SchemaPaths with the following properties.
ExecutorServiceUtilTest	Tests for validating the Drill executor service utility class
FileSystemUtil	Helper class that provides methods to list directories or file or both statuses.
FileSystemUtilTest
FileSystemUtilTestBase	Base test class for file system util classes that will during test initialization setup file system connection and create directories and files needed for unit tests.
ImpersonationUtil	Utilities for impersonation purpose.
JarUtil
JsonStringArrayList<E>
JsonStringHashMap<K,V>
MemoryAllocationUtilities
MiniZooKeeperCluster	Mostly Copied from HBase's MiniZooKeeperCluster, but without the Hadoop dependency.
Pointer<T>
SerializationModule	This helper class holds any custom Jackson serializers used when outputing the data in JSON format.
StoragePluginTestUtils	Utility methods to speed up tests.
SystemPropertyUtil	A collection of utility methods to retrieve and parse the values of Java system properties.
TestApproximateStringMatcher
TestArrayWrappedIntIntMap
TestQueryMemoryAlloc
TestValueVectorElementFormatter
Text	A simplified byte wrapper similar to Hadoop's Text class without all the dependencies.
Text.TextSerializer
Utilities
ValueVectorElementFormatter	This class is responsible for formatting ValueVector elements.
VectorUtil

Enum Summary

Enum	Description
ActionOnFile	Defines possible actions on the file and performs the necessary action