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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.derived.validation;
import com.yahoo.schema.document.SDDocumentType;
import com.yahoo.schema.Schema;
import com.yahoo.schema.derived.DerivedConfiguration;
import com.yahoo.schema.derived.IndexingScript;
import com.yahoo.vespa.indexinglanguage.ExpressionVisitor;
import com.yahoo.vespa.indexinglanguage.expressions.Expression;
import com.yahoo.vespa.indexinglanguage.expressions.OutputExpression;
/**
* @author Mathias M Lidal
*/
public class IndexStructureValidator extends Validator {
public IndexStructureValidator(DerivedConfiguration config, Schema schema) {
super(config, schema);
}
public void validate() {
IndexingScript script = config.getIndexingScript();
for (Expression exp : script.expressions()) {
new OutputVisitor(schema.getDocument(), exp).visit(exp);
}
}
private static class OutputVisitor extends ExpressionVisitor {
final SDDocumentType docType;
final Expression exp;
public OutputVisitor(SDDocumentType docType, Expression exp) {
this.docType = docType;
this.exp = exp;
}
@Override
protected void doVisit(Expression exp) {
if (!(exp instanceof OutputExpression)) return;
String fieldName = ((OutputExpression)exp).getFieldName();
if (docType.getField(fieldName) != null) return;
throw new IllegalArgumentException("Indexing expression '" + this.exp + "' refers to field '" +
fieldName + "' which does not exist in the index structure.");
}
}
}
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