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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.schema.expressiontransforms;
import com.google.common.collect.ImmutableList;
import com.yahoo.searchlib.rankingexpression.RankingExpression;
import com.yahoo.searchlib.rankingexpression.transform.ConstantDereferencer;
import com.yahoo.searchlib.rankingexpression.transform.ExpressionTransformer;
import com.yahoo.searchlib.rankingexpression.transform.Simplifier;
import com.yahoo.searchlib.rankingexpression.transform.TensorMaxMinTransformer;
import java.util.List;
/**
* The transformations done on ranking expressions done at config time before passing them on to the Vespa
* engine for execution.
*
* An instance of this class has scope of a compilation of a single rank profile.
*
* @author bratseth
*/
public class ExpressionTransforms {
private final List<ExpressionTransformer> transforms;
public ExpressionTransforms() {
transforms =
ImmutableList.of(new TensorFlowFeatureConverter(),
new OnnxFeatureConverter(),
new OnnxModelTransformer(),
new XgboostFeatureConverter(),
new LightGBMFeatureConverter(),
new TokenTransformer(),
new ConstantDereferencer(),
new ConstantTensorTransformer(),
new FunctionInliner(),
new FunctionShadower(),
new TensorMaxMinTransformer(),
new Simplifier(),
new BooleanExpressionTransformer());
}
public RankingExpression transform(RankingExpression expression, RankProfileTransformContext context) {
for (ExpressionTransformer transformer : transforms)
expression = transformer.transform(expression, context);
return expression;
}
}
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