Eclipse Platform
Release 3.6

org.eclipse.equinox.p2.query
Class CollectionResult<T>

java.lang.Object
  extended by org.eclipse.equinox.p2.query.CollectionResult<T>
All Implemented Interfaces:
IQueryable<T>, IQueryResult<T>

public class CollectionResult<T>
extends Object
implements IQueryResult<T>

This class allows to adapt java collections to a p2 a query result and as such something queryable

Since:
2.0

Constructor Summary
CollectionResult(Collection<T> collection)
           
 
Method Summary
 boolean isEmpty()
          Returns whether this QueryResult is empty.
 Iterator<T> iterator()
          Returns an iterator on the collected objects.
 IQueryResult<T> query(IQuery<T> query, IProgressMonitor monitor)
          Performs a query, passing any objects that satisfy the query to the provided collector.
 T[] toArray(Class<T> clazz)
          Returns the collected objects as an array
 Set<T> toSet()
          Creates a new Set copy with the contents of this query result.
 Set<T> toUnmodifiableSet()
          Returns a Set backed by this query result.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

CollectionResult

public CollectionResult(Collection<T> collection)
Method Detail

query

public IQueryResult<T> query(IQuery<T> query,
                             IProgressMonitor monitor)
Description copied from interface: IQueryable
Performs a query, passing any objects that satisfy the query to the provided collector.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Specified by:
query in interface IQueryable<T>
Parameters:
query - The query to perform
monitor - a progress monitor, or null if progress reporting is not desired
Returns:
The collector argument

isEmpty

public boolean isEmpty()
Description copied from interface: IQueryResult
Returns whether this QueryResult is empty.

Specified by:
isEmpty in interface IQueryResult<T>
Returns:
true if this QueryResult has accepted any results, and false otherwise.

iterator

public Iterator<T> iterator()
Description copied from interface: IQueryResult
Returns an iterator on the collected objects.

Specified by:
iterator in interface IQueryResult<T>
Returns:
an iterator of the collected objects.

toArray

public T[] toArray(Class<T> clazz)
Description copied from interface: IQueryResult
Returns the collected objects as an array

Specified by:
toArray in interface IQueryResult<T>
Parameters:
clazz - The type of array to return
Returns:
The array of results

toSet

public Set<T> toSet()
Description copied from interface: IQueryResult
Creates a new Set copy with the contents of this query result. The copy can be altered without any side effects on its origin.

Specified by:
toSet in interface IQueryResult<T>
Returns:
A detached copy of the result.

toUnmodifiableSet

public Set<T> toUnmodifiableSet()
Description copied from interface: IQueryResult
Returns a Set backed by this query result. The set is immutable.

Specified by:
toUnmodifiableSet in interface IQueryResult<T>
Returns:
A Set backed by this query result.

Eclipse Platform
Release 3.6

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