org.dkpro.tc.features.window.CaseExtractor.java Source code

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Here is the source code for org.dkpro.tc.features.window.CaseExtractor.java

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/*******************************************************************************
 * Copyright 2016
 * Ubiquitous Knowledge Processing (UKP) Lab
 * Technische Universitt Darmstadt
 * 
 * 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 org.dkpro.tc.features.window;

import org.apache.commons.lang.StringUtils;
import de.tudarmstadt.ukp.dkpro.core.api.segmentation.type.Token;

public class CaseExtractor extends WindowFeatureExtractor<Token> {

    @Override
    protected Class<Token> getTargetType() {
        return Token.class;
    }

    @Override
    protected String getFeatureName() {
        return "Case";
    }

    @Override
    protected String getFeatureValue(Token a) {
        String text = a.getCoveredText();
        return CaseExtractor.getCasing(text);
    }

    public static String getCasing(String text) {
        if (StringUtils.isNumeric(text))
            return "numeric";
        if (StringUtils.isAllLowerCase(text))
            return "allLower";
        else if (StringUtils.isAllUpperCase(text))
            return "allUpper";
        else if (Character.isUpperCase(text.charAt(0)))
            return "initialUpper";
        else
            return "other";
    }
}