Examples of org.xml.sax.EntityResolver

org.xml.sax.EntityResolver
axproject.org'>http://www.saxproject.org for further information.
If a SAX application needs to implement customized handling for external entities, it must implement this interface and register an instance with the SAX driver using the {@link org.xml.sax.XMLReader#setEntityResolver setEntityResolver}method.

The XML reader will then allow the application to intercept any external entities (including the external DTD subset and external parameter entities, if any) before including them.

Many SAX applications will not need to implement this interface, but it will be especially useful for applications that build XML documents from databases or other specialised input sources, or for applications that use URI types other than URLs.

The following resolver would provide the application with a special character stream for the entity with the system identifier "http://www.myhost.com/today":
```
 import org.xml.sax.EntityResolver; import org.xml.sax.InputSource; public class MyResolver implements EntityResolver { public InputSource resolveEntity (String publicId, String systemId) { if (systemId.equals("http://www.myhost.com/today")) { // return a special input source MyReader reader = new MyReader(); return new InputSource(reader); } else { // use the default behaviour return null; } } } 
```
The application can also use this interface to redirect system identifiers to local URIs or to look up replacements in a catalog (possibly by using the public identifier).
@since SAX 1.0 @author David Megginson @version 2.0.1 (sax2r2) @see org.xml.sax.XMLReader#setEntityResolver @see org.xml.sax.InputSource

   */
  public EntityResolver createResolver(InputStream in) throws IOException {
    // cache data for efficient future reuse, avoiding repeated I/O on reuse,
    // in particular network I/O if this is a networked stream.
    final byte[] data = FileUtil.toByteArray(in);
    return new EntityResolver() {
      public InputSource resolveEntity(String publicId, String systemId) {
        return new InputSource(new ByteArrayInputStream(data));
      }
    };
  }

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     */
    public static EntityResolver getInstance(PluginManager pluginManager, String handlerName) 
    throws SecurityException, IllegalArgumentException, ClassNotFoundException, NoSuchMethodException, 
        InstantiationException, IllegalAccessException, InvocationTargetException
    {
        EntityResolver resolver = (EntityResolver) resolvers.get(handlerName);
        if (resolver == null)
        {
            resolver = (EntityResolver) pluginManager.createExecutableExtension("org.jpox.metadata_handler", "name", 
                handlerName, "entity-resolver", null, null);
            resolvers.put(handlerName, resolver);

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                parser = factory.newSAXParser();
            }


            // Generate the default handler to process the metadata
            DefaultHandler handler = null;
            EntityResolver entityResolver = null;
            try
            {
                entityResolver = EntityResolverFactory.getInstance(mgr.getNucleusContext().getPluginManager(), 
                    handlerName);
                if (entityResolver != null)

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      String outputType = null;
      String media = null;
      Vector params = new Vector();
      boolean quietConflictWarnings = false;
      URIResolver uriResolver = null;
      EntityResolver entityResolver = null;
      ContentHandler contentHandler = null;
      int recursionLimit=-1;


      for (int i = 0; i < argv.length; i++)
      {

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            e.printStackTrace();
         }


         // expand it before passing it to the parser
         InputSource source = null;
         EntityResolver currentER = parser.getEntityResolver();
         if (currentER != null) {
            source = currentER.resolveEntity("", loc);
         }
         if (source == null) {
            loc = fEntityHandler.expandSystemId(loc);
            source = new InputSource(loc);
         }

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               return source;
            }
         }


         // first try to resolve using user's entity resolver
         EntityResolver resolver = fEntityHandler.getEntityResolver();
         if (resolver != null) {
            InputSource source = resolver.resolveEntity(publicId, systemId);
            if (source != null) {
               return source;
            }
         }

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      String outputType = null;
      String media = null;
      Vector params = new Vector();
      boolean quietConflictWarnings = false;
      URIResolver uriResolver = null;
      EntityResolver entityResolver = null;
      ContentHandler contentHandler = null;
      int recursionLimit=-1;


      for (int i = 0; i < argv.length; i++)
      {

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    algorithmConfig.getXMLConfiguration().setDelimiterParsingDisabled(true);
    
    if(schemaValidation){
      final InputStream resource = Resource.getAsInputStream("algorithm_schema.xsd");
      if(resource != null) {
        EntityResolver resolver = new EntityResolver() {


          @Override
          public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
            {
              InputSource is = new InputSource(resource);

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    final URIResolver uriResolver = createStyleSheetResolver(catalogResolver);


    // configure a resolver for xml entities
    final InjectingEntityResolver injectingResolver = createEntityResolver(catalogResolver);


    EntityResolver resolver = catalogResolver;
    if (injectingResolver != null) {
      resolver = injectingResolver;
    }


    // configure the builder for XSL Transforms

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            DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance();
            dbfactory.setValidating(false);
            DocumentBuilder builder = dbfactory.newDocumentBuilder();
            builder.setEntityResolver(new EntityResolver() {
                @Override
                public InputSource resolveEntity(String publicId, String systemId)
                        throws SAXException, IOException {
                    return new InputSource(new StringReader(""));
                }

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