/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.elasticsearch.settings.impl.translation;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.regex.Pattern;
import org.apache.lucene.analysis.util.ResourceLoader;
import org.hibernate.search.exception.SearchException;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;
abstract class FileAsLineArrayParameterValueTransformer implements ParameterValueTransformer {
private static final Pattern FILE_PATH_SEPARATOR_PATTERN = Pattern.compile( "[\\s,]+" );
private final ResourceLoader resourceLoader;
public FileAsLineArrayParameterValueTransformer(ResourceLoader resourceLoader) {
super();
this.resourceLoader = resourceLoader;
}
@Override
public JsonElement transform(String parameterValue) {
JsonArray array = new JsonArray();
for ( String filePath : FILE_PATH_SEPARATOR_PATTERN.split( parameterValue ) ) {
try ( final InputStream stream = resourceLoader.openResource( filePath ) ) {
List<String> lines = getLines( stream );
for ( String line : lines ) {
array.add( new JsonPrimitive( line ) );
}
}
catch (IOException | SearchException e) {
throw new SearchException( "Could not parse file: " + parameterValue, e );
}
}
return array;
}
protected abstract List<String> getLines(InputStream stream) throws IOException;
@Override
public String toString() {
return getClass().getSimpleName();
}
}