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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.FileRegistry;
import com.yahoo.searchdefinition.DistributableResource;
import com.yahoo.searchdefinition.RankProfile;
import com.yahoo.tensor.TensorType;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.function.Function;
/**
* Constant values for ranking/model execution tied to a rank profile,
* to be distributed as files.
*
* @author bratseth
*/
public class FileDistributedConstants {
private final FileRegistry fileRegistry;
private final Map<String, DistributableConstant> constants = new LinkedHashMap<>();
public FileDistributedConstants(FileRegistry fileRegistry, Collection<RankProfile.Constant> constants) {
this.fileRegistry = fileRegistry;
for (var constant : constants) {
if (constant.valuePath().isPresent())
add(new DistributableConstant(constant.name().simpleArgument().get(),
constant.type(),
constant.valuePath().get(),
constant.pathType().get()));
}
}
public void add(DistributableConstant constant) {
constant.validate();
constant.register(fileRegistry);
String name = constant.getName();
DistributableConstant prev = constants.putIfAbsent(name, constant);
if ( prev != null )
throw new IllegalArgumentException("Constant '" + name + "' defined twice");
}
public void putIfAbsent(DistributableConstant constant) {
constant.validate();
constant.register(fileRegistry);
String name = constant.getName();
constants.putIfAbsent(name, constant);
}
public void computeIfAbsent(String name, Function<? super String, ? extends DistributableConstant> createConstant) {
constants.computeIfAbsent(name, key -> {
DistributableConstant constant = createConstant.apply(key);
constant.validate();
constant.register(fileRegistry);
return constant;
});
}
/** Returns a read-only map of the constants in this indexed by name. */
public Map<String, DistributableConstant> asMap() {
return Collections.unmodifiableMap(constants);
}
public static class DistributableConstant extends DistributableResource {
private TensorType tensorType;
public DistributableConstant(String name, TensorType type, String fileName) {
this(name, type, fileName, PathType.FILE);
}
public DistributableConstant(String name, TensorType type, String fileName, PathType pathType) {
super(name, fileName, pathType);
this.tensorType = type;
validate();
}
public void setType(TensorType type) {
this.tensorType = type;
}
public TensorType getTensorType() { return tensorType; }
public String getType() { return tensorType.toString(); }
public void validate() {
super.validate();
if (tensorType == null)
throw new IllegalArgumentException("Ranking constant '" + getName() + "' must have a type.");
if (tensorType.dimensions().stream().anyMatch(d -> d.isIndexed() && d.size().isEmpty()))
throw new IllegalArgumentException("Illegal type in field " + getName() + " type " + tensorType +
": Dense tensor dimensions must have a size");
}
@Override
public String toString() {
return super.toString() + "' of type '" + tensorType + "'";
}
}
}
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