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A processor for parsing, validating, serializing and manipulating XML, written in Java
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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.stax;
import javax.xml.stream.Location;
/**
* Location which always returns -1
* and null
from its methods.
*
* @xerces.internal
*
* @version $Id$
*/
public final class EmptyLocation implements Location {
/**
* Singleton instance.
*/
private static final EmptyLocation EMPTY_LOCATION_INSTANCE
= new EmptyLocation();
private EmptyLocation() {}
/** Returns the one and only instance of this class. */
public static EmptyLocation getInstance() {
return EMPTY_LOCATION_INSTANCE;
}
/**
* Return the line number where the current event ends,
* returns -1 if none is available.
* @return the current line number
*/
public int getLineNumber() {
return -1;
}
/**
* Return the column number where the current event ends,
* returns -1 if none is available.
* @return the current column number
*/
public int getColumnNumber() {
return -1;
}
/**
* Return the byte or character offset into the input source this location
* is pointing to. If the input source is a file or a byte stream then
* this is the byte offset into that stream, but if the input source is
* a character media then the offset is the character offset.
* Returns -1 if there is no offset available.
* @return the current offset
*/
public int getCharacterOffset() {
return -1;
}
/**
* Returns the public ID of the XML
* @return the public ID, or null if not available
*/
public String getPublicId() {
return null;
}
/**
* Returns the system ID of the XML
* @return the system ID, or null if not available
*/
public String getSystemId() {
return null;
}
}