org.calrissian.accumulorecipes.commons.iterators

Class EvaluatingIterator

java.lang.Object

org.calrissian.accumulorecipes.commons.iterators.AbstractEvaluatingIterator

org.calrissian.accumulorecipes.commons.iterators.EvaluatingIterator

All Implemented Interfaces:

org.apache.accumulo.core.iterators.OptionDescriber, org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value>

public class EvaluatingIterator
extends AbstractEvaluatingIterator

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.accumulo.core.iterators.OptionDescriber

org.apache.accumulo.core.iterators.OptionDescriber.IteratorOptions

Field Summary

Fields inherited from class org.calrissian.accumulorecipes.commons.iterators.AbstractEvaluatingIterator

EMPTY_BYTE, iterator, QUERY_OPTION, UNEVALUTED_EXPRESSIONS

Constructor Summary

Constructors

Constructor and Description
EvaluatingIterator()
EvaluatingIterator(AbstractEvaluatingIterator other, org.apache.accumulo.core.iterators.IteratorEnvironment env)

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value>	deepCopy(org.apache.accumulo.core.iterators.IteratorEnvironment env)
void	fillMap(EventFields event, org.apache.accumulo.core.data.Key key, org.apache.accumulo.core.data.Value value) Implementations will need to fill the map with field visibilities, names, and values.
org.apache.accumulo.core.security.ColumnVisibility	getColumnVisibility(org.apache.accumulo.core.data.Key key)
org.apache.accumulo.core.data.PartialKey	getKeyComparator() Implementations will return the PartialKey value to use for comparing keys for aggregating events
org.apache.accumulo.core.data.Key	getReturnKey(org.apache.accumulo.core.data.Key k) When the criteria expression evaluates to true against the event, the event fields will be serialized into the Value and returned up the iterator stack.
boolean	isKeyAccepted(org.apache.accumulo.core.data.Key key) Don't accept this key if the colf starts with 'fi'

Methods inherited from class org.calrissian.accumulorecipes.commons.iterators.AbstractEvaluatingIterator

describeOptions, getQueryExpression, getTopKey, getTopValue, hasTop, init, next, reset, seek, validateOptions

Methods inherited from class java.lang.Object

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

Constructor Detail

EvaluatingIterator

public EvaluatingIterator()

EvaluatingIterator

public EvaluatingIterator(AbstractEvaluatingIterator other,
                  org.apache.accumulo.core.iterators.IteratorEnvironment env)

Method Detail

deepCopy

public org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value> deepCopy(org.apache.accumulo.core.iterators.IteratorEnvironment env)

getKeyComparator

public org.apache.accumulo.core.data.PartialKey getKeyComparator()

Description copied from class: AbstractEvaluatingIterator

Implementations will return the PartialKey value to use for comparing keys for aggregating events

Specified by:

getKeyComparator in class AbstractEvaluatingIterator

Returns:

the type of comparator to use

getReturnKey

public org.apache.accumulo.core.data.Key getReturnKey(org.apache.accumulo.core.data.Key k)

Description copied from class: AbstractEvaluatingIterator

When the criteria expression evaluates to true against the event, the event fields will be serialized into the Value and returned up the iterator stack. Implemenations will need to provide a key to be used with the event.

Specified by:

getReturnKey in class AbstractEvaluatingIterator

Returns:

the key that should be returned with the map of values.

fillMap

public void fillMap(EventFields event,
           org.apache.accumulo.core.data.Key key,
           org.apache.accumulo.core.data.Value value)

Description copied from class: AbstractEvaluatingIterator

Implementations will need to fill the map with field visibilities, names, and values. When all fields have been aggregated the event will be evaluated against the criteria expression.

Specified by:

fillMap in class AbstractEvaluatingIterator

Parameters:

event - Multimap of event names and fields.

key - current Key

value - current Value

getColumnVisibility

public org.apache.accumulo.core.security.ColumnVisibility getColumnVisibility(org.apache.accumulo.core.data.Key key)

Parameters:

key -

Returns:

isKeyAccepted

public boolean isKeyAccepted(org.apache.accumulo.core.data.Key key)
                      throws IOException

Don't accept this key if the colf starts with 'fi'

Specified by:

isKeyAccepted in class AbstractEvaluatingIterator

Returns:

true if the key should be acted upon, otherwise false.

Throws:

IOException