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wlfxb - a library for creating and processing of TCF data streams. Copyright (C) Yana Panchenko. This file is part of wlfxb. This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
package eu.clarin.weblicht.wlfxb.tc.api;
The TextStructureLayer preserves the original structure of a written text. Within the layer, a token sequence can be annotated as belonging to some text structure element, such as to a page, a paragraph, a line, a title, etc. textspan element represents text structure annotation on a token sequence. The token sequence is specified by start token id and end token id. The type of the text structure element is specified by the corresponding attribute.

Author(s):
Yana Panchenko
public interface TextStructureLayer extends TextCorpusLayer {
    public TextSpan getSpan(int index);
    public List<TextSpangetSpans(Token token);
    //public TextSpan getSpan(Token token, TextSpanType type);
    public TextSpan getSpan(Token tokenString type);
    //public List<TextSpan> getSpans(TextSpanType type);
    public List<TextSpangetSpans(String type);
    
    public Token[] getTokens(TextSpan span);
    //public TextSpan addSpan(Token spanStart, Token spanEnd, TextSpanType type);
    
    public TextSpan addSpan(Token spanStartToken spanEndString type);
    
    public TextSpan addSpan(Token spanStartToken spanEndString typeString value);
    
    public TextSpan addSpan(TextSpan parentSpanToken spanStartToken spanEndString typethrows WLFormatException;
    
    public TextSpan addSpan(TextSpan parentSpanToken spanStartToken spanEndString typeString valuethrows WLFormatException;
    
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