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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.config;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
/**
* Represents a 'path' in a {@link ConfigInstance}, usually a filename, can be optional
*
* @author hmusum
*/
public class OptionalPathNode extends LeafNode<Optional<Path>> {
private final Optional<FileReference> fileReference;
public OptionalPathNode() {
fileReference = Optional.empty();
}
public OptionalPathNode(FileReference fileReference) {
super(true);
this.value = Optional.of(Path.of(fileReference.value()));
this.fileReference = Optional.of(fileReference);
}
public OptionalPathNode(Optional<FileReference> fileReference) {
super(true);
this.value = fileReference.map(reference -> Path.of(reference.value()));
this.fileReference = fileReference;
}
public Optional<Path> value() {
return value;
}
@Override
public String getValue() {
return value.toString();
}
@Override
public String toString() {
return (value.isEmpty()) ? "(empty)" : '"' + value.get().toString() + '"';
}
@Override
protected boolean doSetValue(String stringVal) {
throw new UnsupportedOperationException("doSetValue should not be necessary anymore!");
}
@Override
void serialize(String name, Serializer serializer) {
value.ifPresent(path -> serializer.serialize(name, path.toString()));
}
@Override
void serialize(Serializer serializer) {
value.ifPresent(path -> serializer.serialize(path.toString()));
}
public Optional<FileReference> getFileReference() {
return fileReference;
}
public static List<Optional<FileReference>> toFileReferences(List<OptionalPathNode> pathNodes) {
List<Optional<FileReference>> fileReferences = new ArrayList<>();
for (OptionalPathNode pathNode : pathNodes)
fileReferences.add(pathNode.getFileReference());
return fileReferences;
}
public static Map<String, Optional<FileReference>> toFileReferenceMap(Map<String, OptionalPathNode> map) {
Map<String, Optional<FileReference>> ret = new LinkedHashMap<>();
for (Map.Entry<String, OptionalPathNode> e : map.entrySet()) {
ret.put(e.getKey(), e.getValue().getFileReference());
}
return ret;
}
}
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