IIndexProvider (Eclipse Platform API Specification)

All Known Implementing Classes:

CompoundQueryable, org.eclipse.equinox.internal.p2.metadata.index.IndexProvider
```
public interface IIndexProvider<T>
```
An index provider is typically an IQueryable.

Since:

2.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.Iterator<T>`	`everything()`	Return the iterator that delivers all rows that the target query should consider.
`IIndex<T>`	`getIndex(java.lang.String memberName)`	Return an index optimized for producing candidates based on values for a `memberName` that denotes a member of the index type.
`java.lang.Object`	`getManagedProperty(java.lang.Object client, java.lang.String memberName, java.lang.Object key)`	Returns a property that this index manages on behalf of a `client` object.

- Method Detail
  - getIndex
```
IIndex<T> getIndex(java.lang.String memberName)
```
    Return an index optimized for producing candidates based on values for a memberName that denotes a member of the index type.
    
    Parameters:
    
    memberName - A member of type T.
    
    Returns:
    
    An index or null if this provider does not support this index.
  - everything
```
java.util.Iterator<T> everything()
```
    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.
  - getManagedProperty
```
java.lang.Object getManagedProperty(java.lang.Object client,
                                    java.lang.String memberName,
                                    java.lang.Object key)
```
    Returns a property that this index manages on behalf of a client 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.