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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.container.plugin.osgi;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
/**
* @author Tony Vaagenes
* @author ollivir
*/
public class ExportPackages {
public static class Export {
private final List<String> packageNames;
private final List<Parameter> parameters;
public Export(List<String> packageNames, List<Parameter> parameters) {
this.packageNames = packageNames;
this.parameters = parameters;
}
public Optional<String> version() {
for (Parameter par : parameters) {
if ("version".equals(par.getName())) {
return Optional.of(par.getValue());
}
}
return Optional.empty();
}
public List<String> getPackageNames() {
return packageNames;
}
public List<Parameter> getParameters() {
return parameters;
}
}
public static class Parameter {
private final String name;
private final String value;
public Parameter(String name, String value) {
this.name = name;
this.value = value;
}
public String getName() {
return name;
}
public String getValue() {
return value;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Parameter parameter = (Parameter) o;
return Objects.equals(name, parameter.name) && Objects.equals(value, parameter.value);
}
@Override
public int hashCode() {
return Objects.hash(name, value);
}
}
public static Set<String> packageNames(Collection<Export> exports) {
return exports.stream()
.map(Export::getPackageNames)
.flatMap(Collection::stream)
.collect(Collectors.toSet());
}
public static Map<String, Export> exportsByPackageName(Collection<Export> exports) {
Map<String, Export> ret = new HashMap<>();
for (Export export : exports) {
for (String packageName : export.getPackageNames()) {
//ensure that earlier exports of a package overrides later exports.
ret.computeIfAbsent(packageName, ign -> export);
}
}
return ret;
}
}
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