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/*
* Copyright (C) 2017 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.android.dialer.phonelookup.composite;
import android.support.annotation.NonNull;
import android.telecom.Call;
import com.android.dialer.DialerPhoneNumber;
import com.android.dialer.phonelookup.PhoneLookup;
import com.android.dialer.phonelookup.PhoneLookupInfo;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.MoreExecutors;
import java.util.ArrayList;
import java.util.List;
/**
* {@link PhoneLookup} which delegates to a configured set of {@link PhoneLookup PhoneLookups},
* iterating, prioritizing, and coalescing data as necessary.
*/
public final class CompositePhoneLookup implements PhoneLookup {
private final ImmutableList<PhoneLookup> phoneLookups;
public CompositePhoneLookup(ImmutableList<PhoneLookup> phoneLookups) {
this.phoneLookups = phoneLookups;
}
/**
* Delegates to a set of dependent lookups to build a complete {@link PhoneLookupInfo}.
*
* <p>Note: If any of the dependent lookups fails, the returned future will also fail. If any of
* the dependent lookups does not complete, the returned future will also not complete.
*/
@Override
public ListenableFuture<PhoneLookupInfo> lookup(@NonNull Call call) {
List<ListenableFuture<PhoneLookupInfo>> futures = new ArrayList<>();
for (PhoneLookup phoneLookup : phoneLookups) {
futures.add(phoneLookup.lookup(call));
}
return Futures.transform(
Futures.allAsList(futures),
new Function<List<PhoneLookupInfo>, PhoneLookupInfo>() {
@Override
public PhoneLookupInfo apply(List<PhoneLookupInfo> infos) {
PhoneLookupInfo.Builder mergedInfo = PhoneLookupInfo.newBuilder();
for (PhoneLookupInfo info : infos) {
mergedInfo.mergeFrom(info);
}
return mergedInfo.build();
}
},
MoreExecutors.directExecutor());
}
@Override
public ListenableFuture<Boolean> isDirty(
ImmutableSet<DialerPhoneNumber> phoneNumbers, long lastModified) {
return null;
}
@Override
public ListenableFuture<ImmutableMap<DialerPhoneNumber, PhoneLookupInfo>> bulkUpdate(
ImmutableMap<DialerPhoneNumber, PhoneLookupInfo> existingInfoMap, long lastModified) {
return null;
}
}
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