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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.config.application.api.DeployLogger;
import com.yahoo.document.DataType;
import com.yahoo.prelude.fastsearch.DocsumDefinitionSet;
import com.yahoo.searchdefinition.Schema;
import com.yahoo.vespa.config.search.SummaryConfig;
import com.yahoo.vespa.documentmodel.DocumentSummary;
import com.yahoo.vespa.documentmodel.SummaryField;
import com.yahoo.vespa.documentmodel.SummaryTransform;
import java.util.Iterator;
import java.util.Map;
import java.util.Random;
import java.util.logging.Level;
/**
* A summary derived from a search definition.
* Each summary definition have at least one summary, the default
* which has the same name as the search definition.
*
* @author bratseth
*/
public class SummaryClass extends Derived {
public static final String DOCUMENT_ID_FIELD = "documentid";
/** True if this summary class needs to access summary information on disk */
private boolean accessingDiskSummary = false;
private final boolean rawAsBase64;
private final boolean omitSummaryFeatures;
/** The summary fields of this indexed by name */
private final Map<String,SummaryClassField> fields = new java.util.LinkedHashMap<>();
private final DeployLogger deployLogger;
private final Random random = new Random(7);
/**
* Creates a summary class from a search definition summary
*
* @param deployLogger a {@link DeployLogger}
*/
public SummaryClass(Schema schema, DocumentSummary summary, DeployLogger deployLogger) {
this.deployLogger = deployLogger;
this.rawAsBase64 = schema.isRawAsBase64();
this.omitSummaryFeatures = summary.omitSummaryFeatures();
deriveName(summary);
deriveFields(schema, summary);
deriveImplicitFields(summary);
}
private void deriveName(DocumentSummary summary) {
setName(summary.getName());
}
/** MUST be called after all other fields are added */
private void deriveImplicitFields(DocumentSummary summary) {
if (summary.getName().equals("default")) {
addField(SummaryClass.DOCUMENT_ID_FIELD, DataType.STRING);
}
}
private void deriveFields(Schema schema, DocumentSummary summary) {
for (SummaryField summaryField : summary.getSummaryFields().values()) {
if (!accessingDiskSummary && schema.isAccessingDiskSummary(summaryField)) {
accessingDiskSummary = true;
}
addField(summaryField.getName(), summaryField.getDataType(), summaryField.getTransform());
}
}
private void addField(String name, DataType type) {
addField(name, type, null);
}
private void addField(String name, DataType type, SummaryTransform transform) {
if (fields.containsKey(name)) {
SummaryClassField sf = fields.get(name);
if ( SummaryClassField.convertDataType(type, transform, rawAsBase64) != sf.getType()) {
deployLogger.logApplicationPackage(Level.WARNING, "Conflicting definition of field " + name +
". " + "Declared as type " + sf.getType() + " and " + type);
}
} else {
fields.put(name, new SummaryClassField(name, type, transform, rawAsBase64));
}
}
/** Returns an iterator of the fields of this summary. Removes on this iterator removes the field from this summary */
public Iterator<SummaryClassField> fieldIterator() {
return fields.values().iterator();
}
public void addField(SummaryClassField field) {
fields.put(field.getName(),field);
}
/** Returns the writable map of fields of this summary */ // TODO: Make read only, move writers to iterator/addField
public Map<String,SummaryClassField> getFields() { return fields; }
public SummaryClassField getField(String name) {
return fields.get(name);
}
public int getFieldCount() { return fields.size(); }
@Override
public int hashCode() {
int number = 1;
int hash = getName().hashCode();
for (Iterator i = fieldIterator(); i.hasNext(); ) {
SummaryClassField field = (SummaryClassField)i.next();
hash += number * (field.getName().hashCode() +
17*field.getType().getName().hashCode());
number++;
}
if (hash < 0)
hash *= -1;
return hash;
}
public SummaryConfig.Classes.Builder getSummaryClassConfig() {
SummaryConfig.Classes.Builder classBuilder = new SummaryConfig.Classes.Builder();
int id = hashCode();
if (id == DocsumDefinitionSet.SLIME_MAGIC_ID) {
deployLogger.log(Level.WARNING, "Summary class '" + getName() + "' hashes to the SLIME_MAGIC_ID '" + id +
"'. This is unlikely but I autofix it for you by adding a random number.");
id += random.nextInt();
}
classBuilder.
id(id).
name(getName()).
omitsummaryfeatures(omitSummaryFeatures);
for (SummaryClassField field : fields.values() ) {
classBuilder.fields(new SummaryConfig.Classes.Fields.Builder().
name(field.getName()).
type(field.getType().getName()));
}
return classBuilder;
}
@Override
protected String getDerivedName() { return "summary"; }
@Override
public String toString() {
return "summary class " + getName();
}
}
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