Package org.eclipse.equinox.p2.query
Class CompoundQueryable<T>
java.lang.Object
org.eclipse.equinox.internal.p2.metadata.index.IndexProvider<T>
org.eclipse.equinox.p2.query.CompoundQueryable<T>
- All Implemented Interfaces:
IIndexProvider<T>
,IQueryable<T>
public final class CompoundQueryable<T>
extends org.eclipse.equinox.internal.p2.metadata.index.IndexProvider<T>
A queryable that holds a number of other IQueryables and provides
a mechanism for querying the entire set.
- Since:
- 2.0
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionReturn the iterator that delivers all rows that the target query should consider.Return an index optimized for producing candidates based on values for amemberName
that denotes a member of the index type.getManagedProperty
(Object client, String memberName, Object key) Returns a property that this index manages on behalf of aclient
object.Methods inherited from class org.eclipse.equinox.internal.p2.metadata.index.IndexProvider
query, query
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Constructor Details
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CompoundQueryable
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Method Details
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getIndex
Description copied from interface:IIndexProvider
Return an index optimized for producing candidates based on values for amemberName
that denotes a member of the index type.- Parameters:
memberName
- A member of typeT
.- Returns:
- An index or
null
if this provider does not support this index.
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everything
Description copied from interface:IIndexProvider
Return the iterator that delivers all rows that the target query should consider. This is used when no index can be found for any possible member.- Returns:
- An iterator. Possibly empty but never
null
.
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getManagedProperty
Description copied from interface:IIndexProvider
Returns a property that this index manages on behalf of aclient
object. Examples of this is the properties that a profile manages for installable units.- Parameters:
client
- The client for which the property is managed. Typically an IU.memberName
- The name of the managed properties, i.e. "profileProperties"key
- The property key- Returns:
- The managed property value or
null
if no value could be found.
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