/*
* 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.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import com.google.gson.JsonElement;
class SimpleParametersTransformer implements ParametersTransformer {
private final Map<String, String> parameterNameTranslations;
private final Map<String, ParameterValueTransformer> parameterValueTranslations;
public SimpleParametersTransformer(Map<String, String> parameterNameTranslations,
Map<String, ParameterValueTransformer> parameterValueTranslations) {
this.parameterNameTranslations = parameterNameTranslations;
this.parameterValueTranslations = parameterValueTranslations;
}
@Override
public Map<String, JsonElement> transform(Map<String, String> luceneParameters) {
if ( luceneParameters.isEmpty() ) {
return Collections.emptyMap();
}
Map<String, JsonElement> result = new LinkedHashMap<>();
for ( Map.Entry<String, String> entry : luceneParameters.entrySet() ) {
addParameter( result, entry.getKey(), entry.getValue() );
}
// We handled all the remaining parameters: remove them as specified in ParametersTransformer
luceneParameters.clear();
return result;
}
protected void addParameter(Map<String, JsonElement> parameterMap, String luceneParameterName, String value) {
String elasticsearchParameterName = parameterNameTranslations.get( luceneParameterName );
if ( elasticsearchParameterName == null ) {
// Assume the parameter actually exists in Elasticsearch
elasticsearchParameterName = luceneParameterName;
}
ParameterValueTransformer valueTransformer = parameterValueTranslations.get( luceneParameterName );
if ( valueTransformer == null ) {
valueTransformer = StringParameterValueTransformer.INSTANCE;
}
parameterMap.put( elasticsearchParameterName, valueTransformer.transform( value ) );
}
@Override
public String toString() {
return new StringBuilder( getClass().getSimpleName() )
.append( "[" )
.append( "parameterNameTranslations = " ).append( parameterNameTranslations )
.append( ", parameterValueTranslations = " ).append( parameterValueTranslations )
.append( "]" )
.toString();
}
}