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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.xerces.util;
import java.io.InputStream;
import java.io.Reader;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.xerces.xni.XMLResourceIdentifier;
import org.apache.xerces.xni.parser.XMLInputSource;
/**
* This class represents an input source for an XML resource
* retrievable over HTTP. In addition to the properties
* provided by an XMLInputSource an HTTP input
* source also has HTTP request properties and a preference
* whether HTTP redirects will be followed. Note that these
* properties will only be used if reading this input source
* will induce an HTTP connection.
*
* @author Michael Glavassevich, IBM
*
* @version $Id: HTTPInputSource.java 699892 2008-09-28 21:08:27Z mrglavas $
*/
public final class HTTPInputSource extends XMLInputSource {
//
// Data
//
/** Preference for whether HTTP redirects should be followed. **/
protected boolean fFollowRedirects = true;
/** HTTP request properties. **/
protected Map fHTTPRequestProperties = new HashMap();
//
// Constructors
//
/**
* Constructs an input source from just the public and system
* identifiers, leaving resolution of the entity and opening of
* the input stream up to the caller.
*
* @param publicId The public identifier, if known.
* @param systemId The system identifier. This value should
* always be set, if possible, and can be
* relative or absolute. If the system identifier
* is relative, then the base system identifier
* should be set.
* @param baseSystemId The base system identifier. This value should
* always be set to the fully expanded URI of the
* base system identifier, if possible.
*/
public HTTPInputSource(String publicId, String systemId, String baseSystemId) {
super(publicId, systemId, baseSystemId);
} // (String,String,String)
/**
* Constructs an input source from a XMLResourceIdentifier
* object, leaving resolution of the entity and opening of
* the input stream up to the caller.
*
* @param resourceIdentifier the XMLResourceIdentifier containing the information
*/
public HTTPInputSource(XMLResourceIdentifier resourceIdentifier) {
super(resourceIdentifier);
} // (XMLResourceIdentifier)
/**
* Constructs an input source from a byte stream.
*
* @param publicId The public identifier, if known.
* @param systemId The system identifier. This value should
* always be set, if possible, and can be
* relative or absolute. If the system identifier
* is relative, then the base system identifier
* should be set.
* @param baseSystemId The base system identifier. This value should
* always be set to the fully expanded URI of the
* base system identifier, if possible.
* @param byteStream The byte stream.
* @param encoding The encoding of the byte stream, if known.
*/
public HTTPInputSource(String publicId, String systemId,
String baseSystemId, InputStream byteStream, String encoding) {
super(publicId, systemId, baseSystemId, byteStream, encoding);
} // (String,String,String,InputStream,String)
/**
* Constructs an input source from a character stream.
*
* @param publicId The public identifier, if known.
* @param systemId The system identifier. This value should
* always be set, if possible, and can be
* relative or absolute. If the system identifier
* is relative, then the base system identifier
* should be set.
* @param baseSystemId The base system identifier. This value should
* always be set to the fully expanded URI of the
* base system identifier, if possible.
* @param charStream The character stream.
* @param encoding The original encoding of the byte stream
* used by the reader, if known.
*/
public HTTPInputSource(String publicId, String systemId,
String baseSystemId, Reader charStream, String encoding) {
super(publicId, systemId, baseSystemId, charStream, encoding);
} // (String,String,String,Reader,String)
//
// Public methods
//
/**
* Returns the preference whether HTTP redirects should
* be followed. By default HTTP redirects will be followed.
*/
public boolean getFollowHTTPRedirects() {
return fFollowRedirects;
} // getFollowHTTPRedirects():boolean
/**
* Sets the preference whether HTTP redirects should
* be followed. By default HTTP redirects will be followed.
*/
public void setFollowHTTPRedirects(boolean followRedirects) {
fFollowRedirects = followRedirects;
} // setFollowHTTPRedirects(boolean)
/**
* Returns the value of the request property
* associated with the given property name.
*
* @param key the name of the request property
* @return the value of the request property or
* null if this property has not
* been set
*/
public String getHTTPRequestProperty(String key) {
return (String) fHTTPRequestProperties.get(key);
} // getHTTPRequestProperty(String):String
/**
* Returns an iterator for the request properties this
* input source contains. Each object returned by the
* iterator is an instance of java.util.Map.Entry
* where each key and value are a pair of strings corresponding
* to the name and value of a request property.
*
* @return an iterator for the request properties this
* input source contains
*/
public Iterator getHTTPRequestProperties() {
return fHTTPRequestProperties.entrySet().iterator();
} // getHTTPRequestProperties():Iterator
/**
* Sets the value of the request property
* associated with the given property name.
*
* @param key the name of the request property
* @param value the value of the request property
*/
public void setHTTPRequestProperty(String key, String value) {
if (value != null) {
fHTTPRequestProperties.put(key, value);
}
else {
fHTTPRequestProperties.remove(key);
}
} // setHTTPRequestProperty(String,String)
} // class HTTPInputSource
