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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.processing;
import com.yahoo.config.application.api.DeployLogger;
import com.yahoo.config.model.api.ModelContext;
import com.yahoo.schema.RankProfileRegistry;
import com.yahoo.document.ArrayDataType;
import com.yahoo.document.DataType;
import com.yahoo.document.PositionDataType;
import com.yahoo.schema.Schema;
import com.yahoo.schema.document.Attribute;
import com.yahoo.schema.document.GeoPos;
import com.yahoo.schema.document.SDDocumentType;
import com.yahoo.schema.document.SDField;
import com.yahoo.vespa.documentmodel.SummaryField;
import com.yahoo.vespa.documentmodel.SummaryTransform;
import com.yahoo.vespa.indexinglanguage.ExpressionConverter;
import com.yahoo.vespa.indexinglanguage.expressions.AttributeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.Expression;
import com.yahoo.vespa.indexinglanguage.expressions.ForEachExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ScriptExpression;
import com.yahoo.vespa.indexinglanguage.expressions.StatementExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SummaryExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ZCurveExpression;
import com.yahoo.vespa.model.container.search.QueryProfiles;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
/**
* Adds a "fieldName_zcurve" long attribute and "fieldName.distance" and "FieldName.position" summary fields to all position type fields.
*
* @author bratseth
*/
public class CreatePositionZCurve extends Processor {
private final SDDocumentType repo;
public CreatePositionZCurve(Schema schema, DeployLogger deployLogger, RankProfileRegistry rankProfileRegistry, QueryProfiles queryProfiles) {
super(schema, deployLogger, rankProfileRegistry, queryProfiles);
this.repo = schema.getDocument();
}
private boolean useV8GeoPositions = false;
@Override
public void process(boolean validate, boolean documentsOnly, ModelContext.Properties properties) {
this.useV8GeoPositions = properties.featureFlags().useV8GeoPositions();
process(validate, documentsOnly);
}
@Override
public void process(boolean validate, boolean documentsOnly) {
for (SDField field : schema.allConcreteFields()) {
DataType fieldType = field.getDataType();
if ( ! isSupportedPositionType(fieldType)) continue;
if (validate && field.doesIndexing()) {
fail(schema, field, "Indexing of data type '" + fieldType.getName() + "' is not supported, " +
"replace 'index' statement with 'attribute'.");
}
if ( ! field.doesAttributing()) continue;
boolean doesSummary = field.doesSummarying();
String fieldName = field.getName();
field.getAttributes().remove(fieldName);
String zName = PositionDataType.getZCurveFieldName(fieldName);
SDField zCurveField = createZCurveField(field, zName, validate);
schema.addExtraField(zCurveField);
schema.fieldSets().addBuiltInFieldSetItem(BuiltInFieldSets.INTERNAL_FIELDSET_NAME, zCurveField.getName());
// configure summary
Collection<String> summaryTo = removeSummaryTo(field);
if (! useV8GeoPositions) {
ensureCompatibleSummary(field, zName,
AdjustPositionSummaryFields.getPositionSummaryFieldName(fieldName),
DataType.getArray(DataType.STRING), // will become "xmlstring"
SummaryTransform.POSITIONS, summaryTo, validate);
ensureCompatibleSummary(field, zName,
AdjustPositionSummaryFields.getDistanceSummaryFieldName(fieldName),
DataType.INT,
SummaryTransform.DISTANCE, summaryTo, validate);
}
// clear indexing script
field.setIndexingScript(null);
SDField posX = field.getStructField(PositionDataType.FIELD_X);
if (posX != null) {
posX.setIndexingScript(null);
}
SDField posY = field.getStructField(PositionDataType.FIELD_Y);
if (posY != null) {
posY.setIndexingScript(null);
}
if (doesSummary) ensureCompatibleSummary(field, zName,
field.getName(),
field.getDataType(),
SummaryTransform.GEOPOS, summaryTo, validate);
}
}
private SDField createZCurveField(SDField inputField, String fieldName, boolean validate) {
if (validate && schema.getConcreteField(fieldName) != null || schema.getAttribute(fieldName) != null) {
throw newProcessException(schema, null, "Incompatible position attribute '" + fieldName +
"' already created.");
}
boolean isArray = inputField.getDataType() instanceof ArrayDataType;
SDField field = new SDField(repo, fieldName, isArray ? DataType.getArray(DataType.LONG) : DataType.LONG);
Attribute attribute = new Attribute(fieldName, Attribute.Type.LONG, isArray ? Attribute.CollectionType.ARRAY :
Attribute.CollectionType.SINGLE);
attribute.setPosition(true);
attribute.setFastSearch(true);
field.addAttribute(attribute);
ScriptExpression script = inputField.getIndexingScript();
script = (ScriptExpression)new RemoveSummary(inputField.getName()).convert(script);
script = (ScriptExpression)new PerformZCurve(field, fieldName).convert(script);
field.setIndexingScript(script);
return field;
}
private void ensureCompatibleSummary(SDField field, String sourceName, String summaryName, DataType summaryType,
SummaryTransform summaryTransform, Collection<String> summaryTo, boolean validate) {
SummaryField summary = schema.getSummaryField(summaryName);
if (summary == null) {
summary = new SummaryField(summaryName, summaryType, summaryTransform);
summary.addDestination("default");
summary.addDestinations(summaryTo);
field.addSummaryField(summary);
} else if (!summary.getDataType().equals(summaryType)) {
if (validate)
fail(schema, field, "Incompatible summary field '" + summaryName + "' type " + summary.getDataType() + " already created.");
} else if (summary.getTransform() == SummaryTransform.NONE) {
summary.setTransform(summaryTransform);
summary.addDestination("default");
summary.addDestinations(summaryTo);
} else if (summary.getTransform() != summaryTransform) {
deployLogger.logApplicationPackage(Level.WARNING, "Summary field " + summaryName + " has wrong transform: " + summary.getTransform());
return;
}
SummaryField.Source source = new SummaryField.Source(sourceName);
summary.getSources().clear();
summary.addSource(source);
}
private Set<String> removeSummaryTo(SDField field) {
Set<String> summaryTo = new HashSet<>();
Collection<SummaryField> summaryFields = field.getSummaryFields().values();
for (SummaryField summary : summaryFields) {
summaryTo.addAll(summary.getDestinations());
}
field.removeSummaryFields();
return summaryTo;
}
private static boolean isSupportedPositionType(DataType dataType) {
return GeoPos.isAnyPos(dataType);
}
private static class RemoveSummary extends ExpressionConverter {
final String find;
RemoveSummary(String find) {
this.find = find;
}
@Override
protected boolean shouldConvert(Expression exp) {
if (!(exp instanceof SummaryExpression)) {
return false;
}
String fieldName = ((SummaryExpression)exp).getFieldName();
return fieldName == null || fieldName.equals(find);
}
@Override
protected Expression doConvert(Expression exp) {
return null;
}
}
private static class PerformZCurve extends ExpressionConverter {
final String find;
final String replace;
final boolean isArray;
PerformZCurve(SDField find, String replace) {
this.find = find.getName();
this.replace = replace;
this.isArray = find.getDataType() instanceof ArrayDataType;
}
@Override
protected boolean shouldConvert(Expression exp) {
if (!(exp instanceof AttributeExpression)) {
return false;
}
String fieldName = ((AttributeExpression)exp).getFieldName();
return fieldName == null || fieldName.equals(find);
}
@Override
protected Expression doConvert(Expression exp) {
return new StatementExpression(
isArray ? new ForEachExpression(new ZCurveExpression()) :
new ZCurveExpression(), new AttributeExpression(replace));
}
}
}
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