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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchdefinition.derived;
import com.yahoo.searchdefinition.Search;
import com.yahoo.searchdefinition.document.Attribute;
import com.yahoo.searchdefinition.document.ImmutableSDField;
import com.yahoo.searchdefinition.document.ImportedField;
import com.yahoo.vespa.config.search.ImportedFieldsConfig;
import java.util.Optional;
/**
* This class derives imported fields from search definition and produces imported-fields.cfg as needed by the search backend.
*
* @author geirst
*/
public class ImportedFields extends Derived implements ImportedFieldsConfig.Producer {
private Optional<com.yahoo.searchdefinition.document.ImportedFields> importedFields = Optional.empty();
public ImportedFields(Search search) {
derive(search);
}
@Override
protected void derive(Search search) {
importedFields = search.importedFields();
}
@Override
protected String getDerivedName() {
return "imported-fields";
}
@Override
public void getConfig(ImportedFieldsConfig.Builder builder) {
if (importedFields.isPresent()) {
importedFields.get().fields().forEach( (name, field) -> considerField(builder, field));
}
}
private static void considerField(ImportedFieldsConfig.Builder builder, ImportedField field) {
ImmutableSDField targetField = field.targetField();
String targetFieldName = targetField.getName();
if (targetFieldName.indexOf('.') == -1) {
if (field.targetField().doesAttributing()) {
builder.attribute.add(createAttributeBuilder(field));
}
} else {
Attribute attribute = targetField.getAttributes().get(targetFieldName);
if (attribute != null) {
builder.attribute.add(createAttributeBuilder(field));
}
}
}
private static ImportedFieldsConfig.Attribute.Builder createAttributeBuilder(ImportedField field) {
ImportedFieldsConfig.Attribute.Builder result = new ImportedFieldsConfig.Attribute.Builder();
result.name(field.fieldName());
result.referencefield(field.reference().referenceField().getName());
result.targetfield(field.targetField().getName());
return result;
}
}
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