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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchdefinition.processing;
import com.yahoo.config.application.api.DeployLogger;
import com.yahoo.searchdefinition.RankProfileRegistry;
import com.yahoo.document.DataType;
import com.yahoo.searchdefinition.document.SDField;
import com.yahoo.searchdefinition.Search;
import com.yahoo.vespa.indexinglanguage.expressions.SetLanguageExpression;
import com.yahoo.vespa.model.container.search.QueryProfiles;
import java.util.ArrayList;
import java.util.List;
/**
* Check that no text field appears before a field that sets language.
*
* @author <a href="mailto:gunnarga@yahoo-inc.com">Gunnar Gauslaa Bergem</a>
*/
public class SetLanguage extends Processor {
public SetLanguage(Search search, DeployLogger deployLogger, RankProfileRegistry rankProfileRegistry, QueryProfiles queryProfiles) {
super(search, deployLogger, rankProfileRegistry, queryProfiles);
}
@Override
public void process() {
List<String> textFieldsWithoutLanguage = new ArrayList<>();
for (SDField field : search.allConcreteFields()) {
if (fieldMustComeAfterLanguageSettingField(field)) {
textFieldsWithoutLanguage.add(field.getName());
}
if (field.containsExpression(SetLanguageExpression.class) && !textFieldsWithoutLanguage.isEmpty()) {
StringBuffer fieldString = new StringBuffer();
for (String fieldName : textFieldsWithoutLanguage) {
fieldString.append(fieldName).append(" ");
}
warn(search, field, "Field '" + field.getName() + "' sets the language for this document, " +
"and should be defined as the first field in the searchdefinition. If you have both header and body fields, this field "+
"should be header, if you require it to affect subsequent header fields and/or any body fields. " +
"Preceding text fields that will not have their language set: " +
fieldString.toString() +
" (This warning is omitted for any subsequent fields that also do set_language.)");
return;
}
}
}
private boolean fieldMustComeAfterLanguageSettingField(SDField field) {
return (!field.containsExpression(SetLanguageExpression.class) &&
(field.getDataType() == DataType.STRING));
}
}
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