enhancer/generic/servicesapi/src/test/java/org/apache/stanbol/enhancer/serviceapi/helper/EnhancementEngineHelperTest.java

/*
* 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.stanbol.enhancer.serviceapi.helper;

import org.apache.clerezza.rdf.core.Language;
import org.apache.clerezza.rdf.core.LiteralFactory;
import org.apache.clerezza.rdf.core.MGraph;
import org.apache.clerezza.rdf.core.UriRef;
import org.apache.stanbol.commons.indexedgraph.IndexedMGraph;
import org.apache.stanbol.enhancer.servicesapi.ContentItem;
import org.apache.stanbol.enhancer.servicesapi.EngineException;
import org.apache.stanbol.enhancer.servicesapi.EnhancementEngine;
import org.apache.stanbol.enhancer.servicesapi.helper.EnhancementEngineHelper;
import org.apache.stanbol.enhancer.servicesapi.rdf.Properties;
import org.junit.Assert;
import org.junit.Test;


public class EnhancementEngineHelperTest {

    private static final LiteralFactory lf = LiteralFactory.getInstance();
    
    /**
     * internally used as argument for {@link EnhancementEngineHelper} methods
     */
    private static final EnhancementEngine dummyEngine = new EnhancementEngine(){

        @Override
        public int canEnhance(ContentItem ci) throws EngineException {
            return 0;
        }
    
        @Override
        public void computeEnhancements(ContentItem ci) throws EngineException {
        }
    
        @Override
        public String getName() {
            return "DummyEngine";
        }
        
    };
    
    
    @Test
    public void testTextAnnotationNewModel(){
        String content = "The Stanbol Enhancer can extract Entities form parsed Text.";
        Language lang = new Language("en");
        int start = content.indexOf("Stanbol");
        int end = start+"Stanbol Enhancer".length();
        UriRef ciUri = new UriRef("http://www.example.org/contentItem#1");
        MGraph metadata = new IndexedMGraph();
        UriRef ta = EnhancementEngineHelper.createTextEnhancement(metadata, dummyEngine, ciUri);
        EnhancementEngineHelper.setOccurrence(metadata, ta, content, start, end, lang, -1, true);
        Assert.assertEquals("The ", EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_PREFIX));
        Assert.assertEquals("Stanbol Enhancer", EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTED_TEXT));
        Assert.assertEquals(" can extra", EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_SUFFIX));
        Assert.assertEquals(Integer.valueOf(start), EnhancementEngineHelper.get(
            metadata, ta, Properties.ENHANCER_START, Integer.class, lf));
        Assert.assertEquals(Integer.valueOf(end), EnhancementEngineHelper.get(
            metadata, ta, Properties.ENHANCER_END, Integer.class, lf));
        //head and tail should be null
        Assert.assertNull(EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_HEAD));
        Assert.assertNull(EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_TAIL));
        
        content = "Ich habe den Schlüssel fürs Donaudampfschiffahrtsgesellschaftskapitänskajütenschloss verlohren.";
        start = content.indexOf("Donaudampfschi");
        end = content.indexOf(" verlohren");
        ta = EnhancementEngineHelper.createTextEnhancement(metadata, dummyEngine, ciUri);
        EnhancementEngineHelper.setOccurrence(metadata, ta, content, start, end, lang, -1, true);
        Assert.assertEquals("ssel fürs ", EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_PREFIX));
        Assert.assertEquals(" verlohren", EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_SUFFIX));
        Assert.assertEquals(Integer.valueOf(start), EnhancementEngineHelper.get(
            metadata, ta, Properties.ENHANCER_START, Integer.class, lf));
        Assert.assertEquals(Integer.valueOf(end), EnhancementEngineHelper.get(
            metadata, ta, Properties.ENHANCER_END, Integer.class, lf));
        //selected text is expected to be null
        Assert.assertNull(EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTED_TEXT));
        //tail and head should be present
        Assert.assertEquals("Donaudampf", EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_HEAD));
        Assert.assertEquals("tenschloss", EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_TAIL));
        
        //finally the same but deactivating head/tail
        ta = EnhancementEngineHelper.createTextEnhancement(metadata, dummyEngine, ciUri);
        EnhancementEngineHelper.setOccurrence(metadata, ta, content, start, end, lang, -1, false);
        Assert.assertEquals("Donaudampfschiffahrtsgesellschaftskapitänskajütenschloss", 
            EnhancementEngineHelper.getString(metadata, ta,Properties.ENHANCER_SELECTED_TEXT));
        Assert.assertNull(EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_HEAD));
        Assert.assertNull(EnhancementEngineHelper.getString(
            metadata, ta,Properties.ENHANCER_SELECTION_TAIL));
    }
    

}