ProtocolRestrictor

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

```
public class ProtocolRestrictor
extends java.lang.Object
```
This class implements the rules in a property such as XMLConstants.ACCESS_EXTERNAL_SCHEMA, which constrain the set of URIs that can be used by supplying a list of permitted protocols.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ProtocolRestrictor.RestrictedResourceResolver

Constructor Summary

Constructors
Constructor Description

ProtocolRestrictor(java.lang.String value)
Create a predicate from a list of allowed protocols.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ResourceResolver`	`asResourceResolver(ResourceResolver existing)`
`boolean`	`test(java.net.URI uri)`	Test whether a particular URI is permitted by this protocol restrictor
`java.lang.String`	`toString()`

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

- Constructor Detail
  - ProtocolRestrictor
```
public ProtocolRestrictor(java.lang.String value)
```
    Create a predicate from a list of allowed protocols.
    The value is a comma-separated list of permitted protocols. A protocol is the scheme portion of a URI, or in the case of the JAR protocol, "jar" plus the scheme portion separated by colon. The value "all" gives access to all protocols (which is the default). The value "" (empty string) disallows all external resource access. (The format is thus the same as for XMLConstants.ACCESS_EXTERNAL_SCHEMA and similar attributes.)
    
    Parameters:
    
    value - the list of allowed protocols
- Method Detail
  - test
```
public boolean test(java.net.URI uri)
```
    Test whether a particular URI is permitted by this protocol restrictor
    
    Parameters:
    
    uri - the candidate URI
    
    Returns:
    
    true if access to this URI is permitted
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - asResourceResolver
```
public ResourceResolver asResourceResolver(ResourceResolver existing)
```