com.bigdata.rdf.sparql.ast.optimizers

Class ASTOptimizerList

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

java.util.AbstractSequentialList<E>

java.util.LinkedList<IASTOptimizer>

com.bigdata.rdf.sparql.ast.optimizers.ASTOptimizerList

All Implemented Interfaces:

IASTOptimizer, Serializable, Cloneable, Iterable<IASTOptimizer>, Collection<IASTOptimizer>, Deque<IASTOptimizer>, List<IASTOptimizer>, Queue<IASTOptimizer>

Direct Known Subclasses:

DefaultOptimizerList

public class ASTOptimizerList
extends LinkedList<IASTOptimizer>
implements IASTOptimizer

An executable list of query optimizers.

Author:

Bryan Thompson

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
ASTOptimizerList(Collection<IASTOptimizer> c)
ASTOptimizerList(IASTOptimizer... optimizers)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(IASTOptimizer opt)
QueryNodeWithBindingSet	optimize(AST2BOpContext context, QueryNodeWithBindingSet input) Run all the optimizers in the list.

Methods inherited from class java.util.LinkedList

add, addAll, addAll, addFirst, addLast, clear, clone, contains, descendingIterator, element, get, getFirst, getLast, indexOf, lastIndexOf, listIterator, offer, offerFirst, offerLast, peek, peekFirst, peekLast, poll, pollFirst, pollLast, pop, push, remove, remove, remove, removeFirst, removeFirstOccurrence, removeLast, removeLastOccurrence, set, size, toArray, toArray

Methods inherited from class java.util.AbstractSequentialList

iterator

Methods inherited from class java.util.AbstractList

equals, hashCode, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

containsAll, equals, hashCode, isEmpty, iterator, listIterator, removeAll, retainAll, subList

Methods inherited from interface java.util.Deque

iterator

Constructor Detail

ASTOptimizerList

public ASTOptimizerList(Collection<IASTOptimizer> c)

ASTOptimizerList

public ASTOptimizerList(IASTOptimizer... optimizers)

Method Detail

add

public boolean add(IASTOptimizer opt)

Specified by:

add in interface Collection<IASTOptimizer>

Specified by:

add in interface Deque<IASTOptimizer>

Specified by:

add in interface List<IASTOptimizer>

Specified by:

add in interface Queue<IASTOptimizer>

Overrides:

add in class LinkedList<IASTOptimizer>

optimize

public QueryNodeWithBindingSet optimize(AST2BOpContext context,
                               QueryNodeWithBindingSet input)

Run all the optimizers in the list.

Note: This makes a deep copy of the AST before applying destructive modifications.

Specified by:

optimize in interface IASTOptimizer

Parameters:

context - The evaluation context.

input - The input to the optimizer, consisting of a queryNode and input binding set.

Returns:

An instance of type QueryNodeWithBindingSet.