com.gs.fw.common.mithra.cacheloader.DependentSingleKeyIndex Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of reladomo Show documentation

Reladomo is an object-relational mapping framework.

There is a newer version: 18.1.0

/*
 Copyright 2016 Goldman Sachs.
 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.gs.fw.common.mithra.cacheloader;


import com.gs.collections.impl.list.mutable.FastList;
import com.gs.fw.common.mithra.extractor.Extractor;
import com.gs.fw.common.mithra.util.ListFactory;

import java.util.List;

public final class DependentSingleKeyIndex extends DependentKeyIndex
{
    private final List dequeuedKeyHolders = FastList.newList();
    private volatile long size = 0L;

    public DependentSingleKeyIndex(CacheLoaderEngine cacheLoaderEngine, DependentLoadingTaskSpawner dependentObjectLoader, Extractor keyExtractors[])
    {
        super(cacheLoaderEngine, dependentObjectLoader, keyExtractors);
    }

    public synchronized void addKeyHoldersToBeLoaded(List keyHolders)
    {
        List list;
        if (dequeuedKeyHolders.size() == 0)
        {
            list = FastList.newList();
            this.dequeuedKeyHolders.add(list);
        }
        else
        {
            list = this.dequeuedKeyHolders.get(this.dequeuedKeyHolders.size() - 1);
            if (list.size() >= DependentLoadingTaskSpawner.TASK_SIZE)
            {
                list = FastList.newList();
                this.dequeuedKeyHolders.add(list);
            }
        }
        list.addAll(keyHolders);
        this.size+=keyHolders.size();
    }

    public long size()
    {
        return this.size;
    }

    public synchronized List createListForTaskRunner()
    {
        List list = this.dequeuedKeyHolders.size() == 0 ? ListFactory.EMPTY_LIST : this.dequeuedKeyHolders.remove(0);
        this.size -= list.size();
        return list;
    }
}