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Make Locks.Client.activeLocks() return a Stream
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116 changes: 116 additions & 0 deletions
116
community/kernel/src/main/java/org/neo4j/kernel/impl/locking/ActiveLock.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * Copyright (c) 2002-2017 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.kernel.impl.locking; | ||
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| import java.util.Objects; | ||
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| import org.neo4j.storageengine.api.lock.ResourceType; | ||
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| public interface ActiveLock | ||
| { | ||
| String SHARED_MODE = "SHARED", EXCLUSIVE_MODE = "EXCLUSIVE"; | ||
|
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| String mode(); | ||
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| ResourceType resourceType(); | ||
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| long resourceId(); | ||
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| static ActiveLock exclusiveLock( ResourceType resourceType, long resourceId ) | ||
| { | ||
| return new Implementation( resourceType, resourceId ) | ||
| { | ||
| @Override | ||
| public String mode() | ||
| { | ||
| return EXCLUSIVE_MODE; | ||
| } | ||
| }; | ||
| } | ||
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| static ActiveLock sharedLock( ResourceType resourceType, long resourceId ) | ||
| { | ||
| return new Implementation( resourceType, resourceId ) | ||
| { | ||
| @Override | ||
| public String mode() | ||
| { | ||
| return SHARED_MODE; | ||
| } | ||
| }; | ||
| } | ||
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| interface Factory | ||
| { | ||
| Factory SHARED_LOCK = ActiveLock::sharedLock, EXCLUSIVE_LOCK = ActiveLock::exclusiveLock; | ||
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| ActiveLock create( ResourceType resourceType, long resourceId ); | ||
| } | ||
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| abstract class Implementation implements ActiveLock | ||
| { | ||
| private final ResourceType resourceType; | ||
| private final long resourceId; | ||
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| private Implementation( ResourceType resourceType, long resourceId ) | ||
| { | ||
| this.resourceType = resourceType; | ||
| this.resourceId = resourceId; | ||
| } | ||
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| @Override | ||
| public abstract String mode(); | ||
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| @Override | ||
| public ResourceType resourceType() | ||
| { | ||
| return resourceType; | ||
| } | ||
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| @Override | ||
| public long resourceId() | ||
| { | ||
| return resourceId; | ||
| } | ||
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| @Override | ||
| public boolean equals( Object o ) | ||
| { | ||
| if ( this == o ) | ||
| { | ||
| return true; | ||
| } | ||
| if ( !(o instanceof ActiveLock) ) | ||
| { | ||
| return false; | ||
| } | ||
| ActiveLock that = (ActiveLock) o; | ||
| return resourceId == that.resourceId() && | ||
| Objects.equals( mode(), that.mode() ) && | ||
| Objects.equals( resourceType, that.resourceType() ); | ||
| } | ||
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| @Override | ||
| public int hashCode() | ||
| { | ||
| return Objects.hash( resourceType, resourceId, mode() ); | ||
| } | ||
| } | ||
| } |
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