com.amazon.carbonado.qe

Class IterableQueryExecutor<S extends Storable>

java.lang.Object

com.amazon.carbonado.qe.AbstractQueryExecutor<S>

com.amazon.carbonado.qe.IterableQueryExecutor<S>

All Implemented Interfaces:

QueryExecutor<S>

public class IterableQueryExecutor<S extends Storable>
extends AbstractQueryExecutor<S>

QueryExecutor which fully scans an iterable collection.

Author:

Brian S O'Neill

See Also:

IteratorCursor

Constructor Summary

Constructors

Constructor and Description
IterableQueryExecutor(java.lang.Class<S> type, java.lang.Iterable<S> iterable)
IterableQueryExecutor(java.lang.Class<S> type, java.lang.Iterable<S> iterable, java.util.concurrent.locks.Lock lock)

Method Summary

Methods

Modifier and Type	Method and Description
Cursor<S>	fetch(FilterValues<S> values) Returns a new cursor using the given filter values.
Cursor<S>	fetch(FilterValues<S> values, Query.Controller controller) Returns a new cursor using the given filter values.
Filter<S>	getFilter() Returns an open filter.
OrderingList<S>	getOrdering() Returns an empty list.
boolean	printPlan(java.lang.Appendable app, int indentLevel, FilterValues<S> values) Prints the query plan to any appendable, if applicable.

Methods inherited from class com.amazon.carbonado.qe.AbstractQueryExecutor

count, count, fetchSlice, fetchSlice, getStorableType, increaseIndent, indent, newline, printNative

Methods inherited from class java.lang.Object

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

Constructor Detail

IterableQueryExecutor

public IterableQueryExecutor(java.lang.Class<S> type,
                     java.lang.Iterable<S> iterable)

Parameters:

type - type of Storable

iterable - collection to iterate over, or null for empty cursor

Throws:

java.lang.IllegalArgumentException - if type is null

IterableQueryExecutor

public IterableQueryExecutor(java.lang.Class<S> type,
                     java.lang.Iterable<S> iterable,
                     java.util.concurrent.locks.Lock lock)

Parameters:

type - type of Storable

iterable - collection to iterate over, or null for empty cursor

lock - optional lock to hold while cursor is open

Throws:

java.lang.IllegalArgumentException - if type is null

Method Detail

getFilter

public Filter<S> getFilter()

Returns an open filter.

Returns:

query filter, never null

fetch

public Cursor<S> fetch(FilterValues<S> values)

Description copied from interface: QueryExecutor

Returns a new cursor using the given filter values.

fetch

public Cursor<S> fetch(FilterValues<S> values,
              Query.Controller controller)

Description copied from interface: QueryExecutor

Returns a new cursor using the given filter values.

controller - optional controller which can abort query operation

getOrdering

public OrderingList<S> getOrdering()

Returns an empty list.

Returns:

query ordering in an unmodifiable list

printPlan

public boolean printPlan(java.lang.Appendable app,
                int indentLevel,
                FilterValues<S> values)
                  throws java.io.IOException

Description copied from interface: QueryExecutor

Prints the query plan to any appendable, if applicable.

values - optional

Returns:

false if not implemented

Throws:

java.io.IOException