Class SimpleLocalStorageBackend
- java.lang.Object
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- org.eclipse.viatra.query.runtime.matchers.scopes.SimpleLocalStorageBackend
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- All Implemented Interfaces:
IStorageBackend
public class SimpleLocalStorageBackend extends java.lang.Object implements IStorageBackend
Basic storage backend implementation based on local collections.EXPERIMENTAL. This class or interface has been added as part of a work in progress. There is no guarantee that this API will work or that it will remain the same.
- Since:
- 2.1
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Constructor Summary
Constructors Constructor Description SimpleLocalStorageBackend()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SimpleBinaryTable<java.lang.Object,java.lang.Object>
createBinaryTable(IInputKey key, ITableContext tableContext, boolean unique)
Creates an index table for a simple source-target bidirectional mapping.SimpleUnaryTable<java.lang.Object>
createUnaryTable(IInputKey key, ITableContext tableContext, boolean unique)
Creates an index table for a simple value set.void
finishTransaction()
Marks the end of a transaction.void
startTransaction()
Marks the beginning of a transaction.
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Method Detail
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startTransaction
public void startTransaction()
Description copied from interface:IStorageBackend
Marks the beginning of a transaction. In transaction mode, table updates may be temporarily delayed (IIndexTable
methods may return stale answers) for better performance.- Specified by:
startTransaction
in interfaceIStorageBackend
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finishTransaction
public void finishTransaction()
Description copied from interface:IStorageBackend
Marks the end of a transaction. Any updates delayed during the transaction must now be flushed.- Specified by:
finishTransaction
in interfaceIStorageBackend
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createUnaryTable
public SimpleUnaryTable<java.lang.Object> createUnaryTable(IInputKey key, ITableContext tableContext, boolean unique)
Description copied from interface:IStorageBackend
Creates an index table for a simple value set.- Specified by:
createUnaryTable
in interfaceIStorageBackend
unique
- client promises to only insert a given tuple with multiplicity one
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createBinaryTable
public SimpleBinaryTable<java.lang.Object,java.lang.Object> createBinaryTable(IInputKey key, ITableContext tableContext, boolean unique)
Description copied from interface:IStorageBackend
Creates an index table for a simple source-target bidirectional mapping.- Specified by:
createBinaryTable
in interfaceIStorageBackend
unique
- client promises to only insert a given tuple with multiplicity one
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