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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.schema.processing;
import com.yahoo.config.application.api.DeployLogger;
import com.yahoo.schema.RankProfileRegistry;
import com.yahoo.document.CollectionDataType;
import com.yahoo.document.DataType;
import com.yahoo.schema.Schema;
import com.yahoo.schema.document.MatchType;
import com.yahoo.schema.document.SDField;
import com.yahoo.schema.document.Stemming;
import com.yahoo.vespa.indexinglanguage.ExpressionConverter;
import com.yahoo.vespa.indexinglanguage.ExpressionVisitor;
import com.yahoo.vespa.indexinglanguage.expressions.Expression;
import com.yahoo.vespa.indexinglanguage.expressions.ForEachExpression;
import com.yahoo.vespa.indexinglanguage.expressions.IndexExpression;
import com.yahoo.vespa.indexinglanguage.expressions.OutputExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ScriptExpression;
import com.yahoo.vespa.indexinglanguage.expressions.TokenizeExpression;
import com.yahoo.vespa.indexinglanguage.linguistics.AnnotatorConfig;
import com.yahoo.vespa.model.container.search.QueryProfiles;
/**
* @author Simon Thoresen Hult
*/
public class TextMatch extends Processor {
public TextMatch(Schema schema, DeployLogger deployLogger, RankProfileRegistry rankProfileRegistry, QueryProfiles queryProfiles) {
super(schema, deployLogger, rankProfileRegistry, queryProfiles);
}
@Override
public void process(boolean validate, boolean documentsOnly) {
for (SDField field : schema.allConcreteFields()) {
if (field.getMatching().getType() != MatchType.TEXT) continue;
ScriptExpression script = field.getIndexingScript();
if (script == null) continue;
DataType fieldType = field.getDataType();
if (fieldType instanceof CollectionDataType) {
fieldType = ((CollectionDataType)fieldType).getNestedType();
}
if (fieldType != DataType.STRING) continue;
MyVisitor visitor = new MyVisitor();
visitor.visit(script);
if ( ! visitor.requiresTokenize) continue;
ExpressionConverter converter = new MyStringTokenizer(schema, findAnnotatorConfig(schema, field));
field.setIndexingScript(schema.getName(), (ScriptExpression)converter.convert(script));
}
}
private AnnotatorConfig findAnnotatorConfig(Schema schema, SDField field) {
AnnotatorConfig ret = new AnnotatorConfig();
Stemming activeStemming = field.getStemming();
if (activeStemming == null) {
activeStemming = schema.getStemming();
}
ret.setStemMode(activeStemming.toStemMode());
ret.setRemoveAccents(field.getNormalizing().doRemoveAccents());
var fieldMatching = field.getMatching();
if (fieldMatching != null) {
var maxLength = fieldMatching.maxLength();
if (maxLength != null) {
ret.setMaxTokenLength(maxLength);
}
var maxTermOccurrences = fieldMatching.maxTermOccurrences();
if (maxTermOccurrences != null) {
ret.setMaxTermOccurrences(maxTermOccurrences);
}
}
return ret;
}
private static class MyVisitor extends ExpressionVisitor {
boolean requiresTokenize = false;
MyVisitor() { }
@Override
protected void doVisit(Expression exp) {
if (exp instanceof IndexExpression) {
requiresTokenize = true;
}
}
}
private static class MyStringTokenizer extends TypedTransformProvider {
final AnnotatorConfig annotatorCfg;
MyStringTokenizer(Schema schema, AnnotatorConfig annotatorCfg) {
super(TokenizeExpression.class, schema);
this.annotatorCfg = annotatorCfg;
}
@Override
protected boolean requiresTransform(Expression exp, DataType fieldType) {
return exp instanceof OutputExpression;
}
@Override
protected Expression newTransform(DataType fieldType) {
Expression exp = new TokenizeExpression(null, annotatorCfg);
if (fieldType instanceof CollectionDataType) {
exp = new ForEachExpression(exp);
}
return exp;
}
}
}
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