com.google.gerrit.server.account.AccountLoader.java Source code

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Here is the source code for com.google.gerrit.server.account.AccountLoader.java

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// Copyright (C) 2014 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.server.account;

import static com.google.common.base.Preconditions.checkArgument;

import com.google.common.base.Throwables;
import com.google.common.collect.Iterables;
import com.google.gerrit.extensions.common.AccountInfo;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.server.account.AccountDirectory.DirectoryException;
import com.google.gerrit.server.account.AccountDirectory.FillOptions;
import com.google.gwtorm.server.OrmException;
import com.google.inject.assistedinject.Assisted;
import com.google.inject.assistedinject.AssistedInject;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class AccountLoader {
    public static final Set<FillOptions> DETAILED_OPTIONS = Collections.unmodifiableSet(EnumSet.of(FillOptions.ID,
            FillOptions.NAME, FillOptions.EMAIL, FillOptions.USERNAME, FillOptions.STATUS, FillOptions.AVATARS));

    public interface Factory {
        AccountLoader create(boolean detailed);

        AccountLoader create(Set<FillOptions> options);
    }

    private final InternalAccountDirectory directory;
    private final Set<FillOptions> options;
    private final Map<Account.Id, AccountInfo> created;
    private final List<AccountInfo> provided;

    @AssistedInject
    AccountLoader(InternalAccountDirectory directory, @Assisted boolean detailed) {
        this(directory, detailed ? DETAILED_OPTIONS : InternalAccountDirectory.ID_ONLY);
    }

    @AssistedInject
    AccountLoader(InternalAccountDirectory directory, @Assisted Set<FillOptions> options) {
        this.directory = directory;
        this.options = options;
        created = new HashMap<>();
        provided = new ArrayList<>();
    }

    public AccountInfo get(Account.Id id) {
        if (id == null) {
            return null;
        }
        AccountInfo info = created.get(id);
        if (info == null) {
            info = new AccountInfo(id.get());
            created.put(id, info);
        }
        return info;
    }

    public void put(AccountInfo info) {
        checkArgument(info._accountId != null, "_accountId field required");
        provided.add(info);
    }

    public void fill() throws OrmException {
        try {
            directory.fillAccountInfo(Iterables.concat(created.values(), provided), options);
        } catch (DirectoryException e) {
            Throwables.throwIfInstanceOf(e.getCause(), OrmException.class);
            throw new OrmException(e);
        }
    }

    public void fill(Collection<? extends AccountInfo> infos) throws OrmException {
        for (AccountInfo info : infos) {
            put(info);
        }
        fill();
    }

    public AccountInfo fillOne(Account.Id id) throws OrmException {
        AccountInfo info = get(id);
        fill();
        return info;
    }
}