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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.repo.sleepycat;
import com.amazon.carbonado.Alias;
import com.amazon.carbonado.Independent;
import com.amazon.carbonado.Nullable;
import com.amazon.carbonado.PrimaryKey;
import com.amazon.carbonado.Storable;
import com.amazon.carbonado.Version;
import com.amazon.carbonado.layout.Unevolvable;
import com.amazon.carbonado.repo.indexed.Unindexed;
/**
* Stores basic information about the BDB databases managed by BDBRepository.
*
* <p>Note: This storable cannot have indexes defined, since it is used to
* discover information about indexes. It would create a cyclic dependency.
*
* @author Brian S O'Neill
*/
@PrimaryKey("databaseName")
@Independent
@Alias("CARBONADO_DATABASE_INFO")
public abstract class StoredDatabaseInfo implements Storable, Unevolvable, Unindexed {
/** Evolution strategy code */
public static final int EVOLUTION_NONE = 0, EVOLUTION_STANDARD = 1;
public StoredDatabaseInfo() {
}
public abstract String getDatabaseName();
public abstract void setDatabaseName(String name);
/**
* Returns the index name descriptor for the keys of this database. This
* descriptor is defined by {@link com.amazon.carbonado.info.StorableIndex}, and
* it does not contain type information.
*/
@Nullable
public abstract String getIndexNameDescriptor();
public abstract void setIndexNameDescriptor(String descriptor);
/**
* Returns the types of the index properties. This descriptor is defined by
* {@link com.amazon.carbonado.info.StorableIndex}.
*/
@Nullable
public abstract String getIndexTypeDescriptor();
public abstract void setIndexTypeDescriptor(String descriptor);
/**
* Returns EVOLUTION_NONE if evolution of records is not supported.
*/
public abstract int getEvolutionStrategy();
public abstract void setEvolutionStrategy(int strategy);
/**
* Returns the milliseconds from 1970-01-01T00:00:00Z when this record was
* created.
*/
public abstract long getCreationTimestamp();
public abstract void setCreationTimestamp(long timestamp);
/**
* Record version number for this StoredDatabaseInfo instance. Some
* encoding strategies require a version number.
*/
@Version
public abstract int getVersionNumber();
public abstract 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
public abstract byte[] getExtraData();
public abstract void setExtraData(byte[] data);
}
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