Class ColumnSliceFilter
- java.lang.Object
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- org.apache.accumulo.core.iterators.WrappingIterator
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- org.apache.accumulo.core.iterators.Filter
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- org.apache.accumulo.core.iterators.user.ColumnSliceFilter
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- All Implemented Interfaces:
OptionDescriber
,SortedKeyValueIterator<Key,Value>
,YieldingKeyValueIterator<Key,Value>
public class ColumnSliceFilter extends Filter
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.apache.accumulo.core.iterators.OptionDescriber
OptionDescriber.IteratorOptions
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Field Summary
Fields Modifier and Type Field Description static String
END_BOUND
static String
END_INCLUSIVE
static String
START_BOUND
static String
START_INCLUSIVE
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Constructor Summary
Constructors Constructor Description ColumnSliceFilter()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
accept(Key key, Value value)
SortedKeyValueIterator<Key,Value>
deepCopy(IteratorEnvironment env)
Creates a deep copy of this iterator as though seek had not yet been called.OptionDescriber.IteratorOptions
describeOptions()
Gets an iterator options object that contains information needed to configure this iterator.void
init(SortedKeyValueIterator<Key,Value> source, Map<String,String> options, IteratorEnvironment env)
Initializes the iterator.static void
setSlice(IteratorSetting si, String start, boolean startInclusive, String end, boolean endInclusive)
static void
setSlice(IteratorSetting si, String start, String end)
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Methods inherited from class org.apache.accumulo.core.iterators.Filter
findTop, next, seek, setNegate, validateOptions
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Methods inherited from class org.apache.accumulo.core.iterators.WrappingIterator
getSource, getTopKey, getTopValue, hasTop, setSource
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.accumulo.core.iterators.YieldingKeyValueIterator
enableYielding
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Field Detail
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START_BOUND
public static final String START_BOUND
- See Also:
- Constant Field Values
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START_INCLUSIVE
public static final String START_INCLUSIVE
- See Also:
- Constant Field Values
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END_BOUND
public static final String END_BOUND
- See Also:
- Constant Field Values
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END_INCLUSIVE
public static final String END_INCLUSIVE
- See Also:
- Constant Field Values
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Method Detail
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init
public void init(SortedKeyValueIterator<Key,Value> source, Map<String,String> options, IteratorEnvironment env) throws IOException
Description copied from interface:SortedKeyValueIterator
Initializes the iterator. Data should not be read from the source in this method.- Specified by:
init
in interfaceSortedKeyValueIterator<Key,Value>
- Overrides:
init
in classFilter
- 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:
IOException
- unused.
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describeOptions
public OptionDescriber.IteratorOptions describeOptions()
Description copied from interface:OptionDescriber
Gets an iterator options object that contains information needed to configure this iterator. This object will be used by the accumulo shell to prompt the user to input the appropriate information.- Specified by:
describeOptions
in interfaceOptionDescriber
- Overrides:
describeOptions
in classFilter
- Returns:
- an iterator options object
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setSlice
public static void setSlice(IteratorSetting si, String start, String end)
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setSlice
public static void setSlice(IteratorSetting si, String start, boolean startInclusive, String end, boolean endInclusive)
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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. A proper implementation would call deepCopy on the source.
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