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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.vespa.indexinglanguage;
import com.yahoo.document.Document;
import com.yahoo.document.DocumentId;
import com.yahoo.document.FieldPathEntry;
import com.yahoo.document.datatypes.FieldPathIteratorHandler;
import com.yahoo.document.datatypes.FieldValue;
import com.yahoo.document.fieldpathupdate.AddFieldPathUpdate;
import com.yahoo.document.fieldpathupdate.AssignFieldPathUpdate;
import com.yahoo.document.fieldpathupdate.FieldPathUpdate;
import com.yahoo.document.fieldpathupdate.RemoveFieldPathUpdate;
/**
* @author Simon Thoresen Hult
*/
public abstract class FieldPathUpdateHelper {
/** Returns true if this update completely replaces the value of the field, false otherwise. */
public static boolean isComplete(FieldPathUpdate update) {
if (!(update instanceof AssignFieldPathUpdate)) return false;
// Only consider field path updates that touch a top-level field as 'complete',
// as these may be converted to regular field value updates.
return ((update.getFieldPath().size() == 1)
&& update.getFieldPath().get(0).getType() == FieldPathEntry.Type.STRUCT_FIELD);
}
public static void applyUpdate(FieldPathUpdate update, Document doc) {
if (update instanceof AddFieldPathUpdate) {
update.applyTo(doc);
} else if (update instanceof AssignFieldPathUpdate assign) {
boolean createMissingPath = assign.getCreateMissingPath();
boolean removeIfZero = assign.getRemoveIfZero();
assign.setCreateMissingPath(true);
assign.setRemoveIfZero(false);
assign.applyTo(doc);
assign.setCreateMissingPath(createMissingPath);
assign.setRemoveIfZero(removeIfZero);
} else if (update instanceof RemoveFieldPathUpdate) {
doc.iterateNested(update.getFieldPath(), 0, new MyHandler());
}
}
public static Document newPartialDocument(DocumentId docId, FieldPathUpdate update) {
Document doc = new Document(update.getDocumentType(), docId);
applyUpdate(update, doc);
return doc;
}
private static class MyHandler extends FieldPathIteratorHandler {
@Override
public ModificationStatus doModify(FieldValue fv) {
return ModificationStatus.MODIFIED;
}
@Override
public boolean createMissingPath() {
return true;
}
}
}
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