Package org.apache.accumulo.core.file

Class FileOperations.OpenScanReaderOperation

java.lang.Object

org.apache.accumulo.core.file.FileOperations.FileAccessOperation<SubclassType>

org.apache.accumulo.core.file.FileOperations.FileIOOperation<SubclassType>

org.apache.accumulo.core.file.FileOperations.FileReaderOperation<FileOperations.OpenScanReaderOperation>

org.apache.accumulo.core.file.FileOperations.OpenScanReaderOperation

All Implemented Interfaces:

FileOperations.FileAccessOperationBuilder<FileOperations.OpenScanReaderOperationBuilder>, FileOperations.FileIOOperationBuilder<FileOperations.OpenScanReaderOperationBuilder>, FileOperations.FileReaderOperationBuilder<FileOperations.OpenScanReaderOperationBuilder>, FileOperations.NeedsFile<FileOperations.OpenScanReaderOperationBuilder>, FileOperations.NeedsFileSystem<FileOperations.OpenScanReaderOperationBuilder>, FileOperations.NeedsRange<FileOperations.OpenScanReaderOperationBuilder>, FileOperations.NeedsTableConfiguration<FileOperations.OpenScanReaderOperationBuilder>, FileOperations.OpenScanReaderOperationBuilder

Enclosing class:

FileOperations

protected class FileOperations.OpenScanReaderOperation
extends FileOperations.FileReaderOperation<FileOperations.OpenScanReaderOperation>
implements FileOperations.OpenScanReaderOperationBuilder

Operation object for opening a scan reader.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	OpenScanReaderOperation()

Method Summary

Modifier and Type	Method	Description
FileSKVIterator	build()	Execute the operation, constructing a scan iterator.
Set<ByteSequence>	getColumnFamilies()	The column families which this reader should scan.
Range	getRange()	The range over which this reader should scan.
boolean	isRangeInclusive()
FileOperations.OpenScanReaderOperation	overRange(Range range, Set<ByteSequence> columnFamilies, boolean inclusive)	Set the range over which the constructed iterator will search.
protected void	validate()	Check for null parameters.

Methods inherited from class org.apache.accumulo.core.file.FileOperations.FileReaderOperation

getDataCache, getFileLenCache, getIndexCache, withBlockCache, withDataCache, withFileLenCache, withIndexCache

Methods inherited from class org.apache.accumulo.core.file.FileOperations.FileIOOperation

getRateLimiter, withRateLimiter

Methods inherited from class org.apache.accumulo.core.file.FileOperations.FileAccessOperation

forFile, forFile, getConfiguration, getFilename, getFileSystem, getTableConfiguration, inFileSystem, setConfiguration, setFilename, withTableConfiguration

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.accumulo.core.file.FileOperations.FileIOOperationBuilder

withRateLimiter

Methods inherited from interface org.apache.accumulo.core.file.FileOperations.FileReaderOperationBuilder

withBlockCache, withDataCache, withFileLenCache, withIndexCache

Methods inherited from interface org.apache.accumulo.core.file.FileOperations.NeedsFile

forFile, forFile

Methods inherited from interface org.apache.accumulo.core.file.FileOperations.NeedsFileSystem

inFileSystem

Methods inherited from interface org.apache.accumulo.core.file.FileOperations.NeedsTableConfiguration

withTableConfiguration

Constructor Detail

OpenScanReaderOperation

protected OpenScanReaderOperation()

Method Detail

overRange

public FileOperations.OpenScanReaderOperation overRange(Range range,
                                                        Set<ByteSequence> columnFamilies,
                                                        boolean inclusive)

Set the range over which the constructed iterator will search.

Specified by:

overRange in interface FileOperations.NeedsRange<FileOperations.OpenScanReaderOperationBuilder>

getRange

public Range getRange()

The range over which this reader should scan.

getColumnFamilies

public Set<ByteSequence> getColumnFamilies()

The column families which this reader should scan.

isRangeInclusive

public boolean isRangeInclusive()

validate

protected void validate()

Description copied from class: FileOperations.FileAccessOperation

Check for null parameters.

Overrides:

validate in class FileOperations.FileAccessOperation<FileOperations.OpenScanReaderOperation>

build

public FileSKVIterator build()
                      throws IOException

Execute the operation, constructing a scan iterator.

Specified by:

build in interface FileOperations.OpenScanReaderOperationBuilder

Throws:

IOException