ChainedResourceResolver

java.lang.Object
- net.sf.saxon.lib.ChainedResourceResolver

All Implemented Interfaces:

ResourceResolver
```
public class ChainedResourceResolver
extends java.lang.Object
implements ResourceResolver
```
An ResourceResolver that first tries one supplied ResourceResolver, and if that returns null, falls back to another. Either ResourceResolver may itself be a ChainedResourceResolver, so a chain of any length can be established.

Since:

11.1

Constructor Summary

Constructors
Constructor Description

ChainedResourceResolver(ResourceResolver first, ResourceResolver second)
Create a composite entity resolver

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`javax.xml.transform.Source`	`resolve(ResourceRequest request)`	Process a resource request to deliver a resource

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

- Constructor Detail
  - ChainedResourceResolver
```
public ChainedResourceResolver(ResourceResolver first,
                               ResourceResolver second)
```
    Create a composite entity resolver
    
    Parameters:
    
    first - the first entity resolver to be used
    
    second - the entity resolver to be used if the first one returns null
- Method Detail
  - resolve
```
public javax.xml.transform.Source resolve(ResourceRequest request)
                                   throws XPathException
```
    Description copied from interface: ResourceResolver
    
    Process a resource request to deliver a resource
    
    Specified by:
    
    resolve in interface ResourceResolver
    
    Parameters:
    
    request - the resource request
    
    Returns:
    
    the returned Source; or null to delegate resolution to another resolver. The type of Source must correspond to the type of resource requested: for non-XML resources, it should generally be a StreamSource.
    
    Throws:
    
    XPathException - if the request is invalid in some way, or if the identified resource is unsuitable, or if resolution is to fail rather than being delegated to another resolver.