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// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.index;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.base.CharMatcher;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSortedMap;
import com.google.common.collect.Iterables;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import org.eclipse.jgit.lib.PersonIdent;
public class SchemaUtil {
public static <V> ImmutableSortedMap<Integer, Schema<V>> schemasFromClass(
Class<?> schemasClass, Class<V> valueClass) {
Map<Integer, Schema<V>> schemas = new HashMap<>();
for (Field f : schemasClass.getDeclaredFields()) {
if (Modifier.isStatic(f.getModifiers())
&& Modifier.isFinal(f.getModifiers())
&& Schema.class.isAssignableFrom(f.getType())) {
ParameterizedType t = (ParameterizedType) f.getGenericType();
if (t.getActualTypeArguments()[0] == valueClass) {
try {
f.setAccessible(true);
@SuppressWarnings("unchecked")
Schema<V> schema = (Schema<V>) f.get(null);
checkArgument(f.getName().startsWith("V"));
schema.setVersion(Integer.parseInt(f.getName().substring(1)));
schemas.put(schema.getVersion(), schema);
} catch (IllegalAccessException e) {
throw new IllegalArgumentException(e);
}
} else {
throw new IllegalArgumentException(
"non-" + schemasClass.getSimpleName() + " schema: " + f);
}
}
}
if (schemas.isEmpty()) {
throw new ExceptionInInitializerError("no ChangeSchemas found");
}
return ImmutableSortedMap.copyOf(schemas);
}
public static <V> Schema<V> schema(Collection<FieldDef<V, ?>> fields) {
return new Schema<>(ImmutableList.copyOf(fields));
}
@SafeVarargs
public static <V> Schema<V> schema(Schema<V> schema, FieldDef<V, ?>... moreFields) {
return new Schema<>(
new ImmutableList.Builder<FieldDef<V, ?>>()
.addAll(schema.getFields().values())
.addAll(ImmutableList.copyOf(moreFields))
.build());
}
@SafeVarargs
public static <V> Schema<V> schema(FieldDef<V, ?>... fields) {
return schema(ImmutableList.copyOf(fields));
}
public static Set<String> getPersonParts(PersonIdent person) {
if (person == null) {
return ImmutableSet.of();
}
return getNameParts(person.getName(), Collections.singleton(person.getEmailAddress()));
}
public static Set<String> getNameParts(String name) {
return getNameParts(name, Collections.emptySet());
}
public static Set<String> getNameParts(String name, Iterable<String> emails) {
Splitter at = Splitter.on('@');
Splitter s = Splitter.on(CharMatcher.anyOf("@.- /_")).omitEmptyStrings();
HashSet<String> parts = new HashSet<>();
for (String email : emails) {
if (email == null) {
continue;
}
String lowerEmail = email.toLowerCase(Locale.US);
parts.add(lowerEmail);
Iterables.addAll(parts, at.split(lowerEmail));
Iterables.addAll(parts, s.split(lowerEmail));
}
if (name != null) {
Iterables.addAll(parts, s.split(name.toLowerCase(Locale.US)));
}
return parts;
}
private SchemaUtil() {}
}
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