CompoundItemDataProvider (citeproc-java 3.3.0 API)

java.lang.Object
- de.undercouch.citeproc.CompoundItemDataProvider

All Implemented Interfaces:

ItemDataProvider
```
public class CompoundItemDataProvider
extends Object
implements ItemDataProvider
```
Retrieves citation items from a list of other ItemDataProviders.

Calls each ItemDataProvider in the order they have been added to the list and returns the first citation item retrieved. Returns null if no provider returned a result.

Does not check for duplicate items or item IDs.

Since:

1.1.0

Author:

Michel Kraemer

Constructor Summary

Constructors
Constructor Description

CompoundItemDataProvider(List<ItemDataProvider> providers)
Creates a new compound provider

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Collection<String>`	`getIds()`
`CSLItemData`	`retrieveItem(String id)`	Retrieve a citation item with a given ID

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CompoundItemDataProvider
```
public CompoundItemDataProvider(List<ItemDataProvider> providers)
```
    Creates a new compound provider
    
    Parameters:
    
    providers - the list of other providers to query for citation items
- Method Detail
  - retrieveItem
```
public CSLItemData retrieveItem(String id)
```
    Description copied from interface: ItemDataProvider
    
    Retrieve a citation item with a given ID
    
    Specified by:
    
    retrieveItem in interface ItemDataProvider
    
    Parameters:
    
    id - the item's unique ID
    
    Returns:
    
    the item
  - getIds
```
public Collection<String> getIds()
```
    Specified by:
    
    getIds in interface ItemDataProvider
    
    Returns:
    
    all item IDs this provider can serve