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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.prelude.fastsearch;
import com.yahoo.data.access.Inspector;
import com.yahoo.data.access.Type;
import com.yahoo.container.search.LegacyEmulationConfig;
import com.yahoo.search.result.FeatureData;
/**
* Class representing a "feature data" field. This was historically
* just a string containing JSON; now it's a structure of
* data (that will be rendered as JSON by default).
*/
public class FeatureDataField extends LongstringField {
public FeatureDataField (String name) {
super(name);
}
@Override
public String toString() {
return "field " + getName() + " type FeatureDataField";
}
@Override
public Object convert(Inspector value) {
if (! value.valid()) {
if (getEmulConfig().stringBackedFeatureData()) {
return "";
} else if (getEmulConfig().forceFillEmptyFields()) {
return new FeatureData(com.yahoo.data.access.simple.Value.empty());
} else {
return null;
}
}
if (value.type() == Type.STRING) {
return value.asString();
}
FeatureData obj = new FeatureData(value);
if (getEmulConfig().stringBackedFeatureData()) {
return obj.toJson();
} else {
return obj;
}
}
}
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