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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.searchdefinition.derived;
import com.yahoo.searchdefinition.Schema;
import com.yahoo.searchdefinition.document.ImmutableSDField;
import com.yahoo.vespa.config.search.SummarymapConfig;
import com.yahoo.vespa.documentmodel.DocumentSummary;
import com.yahoo.vespa.documentmodel.SummaryField;
import com.yahoo.vespa.documentmodel.SummaryTransform;
import java.util.Collections;
import java.util.Iterator;
import java.util.Map;
/**
* A summary map (describing search-time summary field transformations)
* derived from a search definition
*
* @author bratseth
*/
public class SummaryMap extends Derived implements SummarymapConfig.Producer {
private Map<String,FieldResultTransform> resultTransforms = new java.util.LinkedHashMap<>();
/** Creates a summary map from a search definition */
SummaryMap(Schema schema) {
derive(schema);
}
protected void derive(Schema schema) {
for (DocumentSummary documentSummary : schema.getSummaries().values()) {
derive(documentSummary);
}
super.derive(schema);
}
@Override
protected void derive(ImmutableSDField field, Schema schema) {
}
private void derive(DocumentSummary documentSummary) {
for (SummaryField summaryField : documentSummary.getSummaryFields().values()) {
if (summaryField.getTransform()== SummaryTransform.NONE) continue;
if (summaryField.getTransform()==SummaryTransform.ATTRIBUTE ||
summaryField.getTransform()==SummaryTransform.DISTANCE ||
summaryField.getTransform()==SummaryTransform.GEOPOS ||
summaryField.getTransform()==SummaryTransform.POSITIONS ||
summaryField.getTransform()==SummaryTransform.MATCHED_ELEMENTS_FILTER ||
summaryField.getTransform()==SummaryTransform.MATCHED_ATTRIBUTE_ELEMENTS_FILTER)
{
resultTransforms.put(summaryField.getName(),new FieldResultTransform(summaryField.getName(),
summaryField.getTransform(),
summaryField.getSingleSource()));
} else {
// Note: Currently source mapping is handled in the indexing statement,
// by creating a summary field for each of the values
// This works, but is suboptimal. We could consolidate to a minimal set and
// use the right value from the minimal set as the third parameter here,
// and add "override" commands to multiple static values
resultTransforms.put(summaryField.getName(),new FieldResultTransform(summaryField.getName(),
summaryField.getTransform(),
summaryField.getName()));
}
}
}
/** Returns a read-only iterator of the FieldResultTransforms of this summary map */
public Iterator resultTransformIterator() {
return Collections.unmodifiableCollection(resultTransforms.values()).iterator();
}
protected String getDerivedName() { return "summarymap"; }
/** Returns the command name of a transform */
private String getCommand(SummaryTransform transform) {
if (transform.equals(SummaryTransform.DISTANCE))
return "absdist";
else if (transform.isDynamic())
return "dynamicteaser";
else
return transform.getName();
}
/**
* Does this summary command name stand for a dynamic transform?
* We need this because some model information is shared through configs instead of model - see usage
* A dynamic transform needs the query to perform its computations.
*/
public static boolean isDynamicCommand(String commandName) {
return (commandName.equals("dynamicteaser") ||
commandName.equals(SummaryTransform.MATCHED_ELEMENTS_FILTER.getName()) ||
commandName.equals(SummaryTransform.MATCHED_ATTRIBUTE_ELEMENTS_FILTER.getName()));
}
@Override
public void getConfig(SummarymapConfig.Builder builder) {
builder.defaultoutputclass(-1);
for (FieldResultTransform frt : resultTransforms.values()) {
SummarymapConfig.Override.Builder oB = new SummarymapConfig.Override.Builder()
.field(frt.getFieldName())
.command(getCommand(frt.getTransform()));
if (frt.getTransform().isDynamic() ||
frt.getTransform().equals(SummaryTransform.ATTRIBUTE) ||
frt.getTransform().equals(SummaryTransform.DISTANCE) ||
frt.getTransform().equals(SummaryTransform.GEOPOS) ||
frt.getTransform().equals(SummaryTransform.POSITIONS) ||
frt.getTransform().equals(SummaryTransform.TEXTEXTRACTOR) ||
frt.getTransform().equals(SummaryTransform.MATCHED_ELEMENTS_FILTER) ||
frt.getTransform().equals(SummaryTransform.MATCHED_ATTRIBUTE_ELEMENTS_FILTER))
{
oB.arguments(frt.getArgument());
} else {
oB.arguments("");
}
builder.override(oB);
}
}
}
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