com.sun.org.apache.xml.internal.resolver.readers.CatalogReader Maven / Gradle / Ivy
// CatalogReader.java - An interface for reading catalog files
/*
* Copyright 2001-2004 The Apache Software Foundation or its licensors,
* as applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.sun.org.apache.xml.internal.resolver.readers;
import java.io.IOException;
import java.net.MalformedURLException;
import com.sun.org.apache.xml.internal.resolver.CatalogException;
import java.io.InputStream;
import com.sun.org.apache.xml.internal.resolver.Catalog;
/**
* The CatalogReader interface.
*
* The Catalog class requires that classes implement this interface
* in order to be used to read catalogs. Examples of CatalogReaders
* include the TextCatalogReader, the SAXCatalogReader, and the
* DOMCatalogReader.
*
* @see Catalog
*
* @author Norman Walsh
* [email protected]
*
* @version 1.0
*/
public interface CatalogReader {
/**
* Read a catalog from a file.
*
* This class reads a catalog from a URL.
*
* @param catalog The catalog for which this reader is called.
* @param fileUrl The URL of a document to be read.
* @throws MalformedURLException if the specified URL cannot be
* turned into a URL object.
* @throws IOException if the URL cannot be read.
* @throws UnknownCatalogFormatException if the catalog format is
* not recognized.
* @throws UnparseableCatalogException if the catalog cannot be parsed.
* (For example, if it is supposed to be XML and isn't well-formed.)
*/
public void readCatalog(Catalog catalog, String fileUrl)
throws MalformedURLException, IOException, CatalogException;
/**
* Read a catalog from an input stream.
*
* This class reads a catalog from an input stream.
*
* @param catalog The catalog for which this reader is called.
* @param is The input stream that is to be read.
* @throws IOException if the URL cannot be read.
* @throws UnknownCatalogFormatException if the catalog format is
* not recognized.
* @throws UnparseableCatalogException if the catalog cannot be parsed.
* (For example, if it is supposed to be XML and isn't well-formed.)
*/
public void readCatalog(Catalog catalog, InputStream is)
throws IOException, CatalogException;
}