org.apache.accumulo.core.file.rfile
Class RFile.Reader
java.lang.Object
org.apache.accumulo.core.iterators.HeapIterator
org.apache.accumulo.core.file.rfile.RFile.Reader
- All Implemented Interfaces:
- FileSKVIterator, InterruptibleIterator, SortedKeyValueIterator<Key,Value>
- Enclosing class:
- RFile
public static class RFile.Reader
- extends HeapIterator
- implements FileSKVIterator
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
closeDeepCopies
public void closeDeepCopies()
- Specified by:
closeDeepCopies
in interface FileSKVIterator
close
public void close()
throws java.io.IOException
- Specified by:
close
in interface FileSKVIterator
- Throws:
java.io.IOException
getFirstKey
public Key getFirstKey()
throws java.io.IOException
- Specified by:
getFirstKey
in interface FileSKVIterator
- Throws:
java.io.IOException
getLastKey
public Key getLastKey()
throws java.io.IOException
- Specified by:
getLastKey
in interface FileSKVIterator
- Throws:
java.io.IOException
getMetaStore
public java.io.DataInputStream getMetaStore(java.lang.String name)
throws java.io.IOException,
NoSuchMetaStoreException
- Specified by:
getMetaStore
in interface FileSKVIterator
- Throws:
java.io.IOException
NoSuchMetaStoreException
deepCopy
public SortedKeyValueIterator<Key,Value> deepCopy(IteratorEnvironment env)
- Description copied from interface:
SortedKeyValueIterator
- Creates a deep copy of this iterator as though seek had not yet been called.
init should be called on an iterator before deepCopy is called.
init should not need to be called on the copy that is returned by deepCopy; that is,
when necessary init should be called in the deepCopy method on the iterator it returns.
The behavior is unspecified if init is called after deepCopy either on the original or the copy.
- Specified by:
deepCopy
in interface SortedKeyValueIterator<Key,Value>
- Parameters:
env
- IteratorEnvironment environment in which iterator is being run.
- Returns:
- SortedKeyValueIterator a copy of this iterator (with the same source and settings).
init
public void init(SortedKeyValueIterator<Key,Value> source,
java.util.Map<java.lang.String,java.lang.String> options,
IteratorEnvironment env)
throws java.io.IOException
- Description copied from interface:
SortedKeyValueIterator
- Initializes the iterator. Data should not be read from the source in this method.
- Specified by:
init
in interface SortedKeyValueIterator<Key,Value>
- Parameters:
source
- SortedKeyValueIterator source to read data from.options
- Map map of string option names to option values.env
- IteratorEnvironment environment in which iterator is being run.
- Throws:
java.io.IOException
- unused.
seek
public void seek(Range range,
java.util.Collection<ByteSequence> columnFamilies,
boolean inclusive)
throws java.io.IOException
- Description copied from interface:
SortedKeyValueIterator
- An iterator must seek to the first key in the range taking inclusiveness into account. However, an iterator does not have to stop at the end of the range.
The whole range is provided so that iterators can make optimizations.
- Specified by:
seek
in interface SortedKeyValueIterator<Key,Value>
- Parameters:
range
- Range of keys to iterate over.columnFamilies
- Collection of column families to include or exclude.inclusive
- boolean that indicates whether to include (true) or exclude (false) column families.
- Throws:
java.io.IOException
- if an I/O error occurs.
getIndex
public FileSKVIterator getIndex()
printInfo
public void printInfo()
setInterruptFlag
public void setInterruptFlag(java.util.concurrent.atomic.AtomicBoolean flag)
- Specified by:
setInterruptFlag
in interface InterruptibleIterator
Copyright © 2012 The Apache Software Foundation. All Rights Reserved.