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/*
* Copyright 2006-2012 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* 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.amazon.carbonado.layout;
import com.amazon.carbonado.Alias;
import com.amazon.carbonado.AlternateKeys;
import com.amazon.carbonado.Independent;
import com.amazon.carbonado.Key;
import com.amazon.carbonado.Nullable;
import com.amazon.carbonado.PrimaryKey;
import com.amazon.carbonado.Storable;
import com.amazon.carbonado.Version;
/**
* Stored information regarding the layout of a Storable type, which is used
* internally by {@link Layout}. This interface is public only because
* Carbonado requires storable type definitions to be public.
*
* @author Brian S O'Neill
*/
@AlternateKeys({
@Key({"storableTypeName", "generation"})
})
@PrimaryKey("layoutID")
@Independent
@Alias("CARBONADO_LAYOUT")
public interface StoredLayout extends Storable<StoredLayout>, Unevolvable {
long getLayoutID();
void setLayoutID(long typeID);
/**
* Storable type name is a fully qualified Java class name.
*/
String getStorableTypeName();
void setStorableTypeName(String typeName);
/**
* Generation of storable, where 0 represents the first generation.
*/
int getGeneration();
void setGeneration(int generation);
/**
* Returns the milliseconds from 1970-01-01T00:00:00Z when this record was
* created.
*/
long getCreationTimestamp();
void setCreationTimestamp(long timestamp);
/**
* Returns the user that created this generation.
*/
@Nullable
String getCreationUser();
void setCreationUser(String user);
/**
* Returns the host machine that created this generation.
*/
@Nullable
String getCreationHost();
void setCreationHost(String host);
/**
* Record version number for this StoredTypeLayout instance. Some encoding
* strategies require a version number.
*/
@Version
int getVersionNumber();
void setVersionNumber(int version);
/**
* Since this record cannot evolve, this property allows it to be extended
* without conflicting with existing records. This record cannot evolve
* because an evolution strategy likely depends on this interface remaining
* stable, avoiding a cyclic dependency.
*/
@Nullable
byte[] getExtraData();
void setExtraData(byte[] data);
}
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