Package com.bigdata.samples.btree

This package contains some sample code for using the B+Tree package.

See:
Description

Class Summary

JournalExample	This example show how to create a Journal, register a BTree and perform basic operations on the BTree.
JournalReadOnlyTxExample	This example illustrates how to safely interact with a zero retention configuration of the RWStore using a mixture of read-only transactions and unisolated index writes.
JournalTxExample	This example show how to create a Journal, register a BTree, start a transaction, obtain a B+Tree view isolated by that transaction, perform basic operations on the BTree, and commit the transaction.
ReadWriteIndexExample	This example shows how to wrap a B+Tree with a skin which makes it thread safe for concurrent readers and writers (the underlying B+Tree implementation is already thread-safe for concurrent readers, but is single-threaded for mutation).
ReadWriteIndexTxExample	This example shows how to wrap a B+Tree with a skin which makes it thread safe for concurrent readers and writers (the underlying B+Tree implementation is already thread-safe for concurrent readers, but is single-threaded for mutation).
TempStoreExample	Sample for for using the BTree with a TemporaryStore.

Package com.bigdata.samples.btree Description

This package contains some sample code for using the B+Tree package.

TempStoreExample

Shows how to create a temporary store, register a B+Tree on the temporary store, and do basic CRUD operations on the B+Tree.

JournalExample

Shows how to create a Journal, how to register a B+Tree on the journal, how to do basic CRUD operations on the B+Tree. This example also covers committing or aborting the write set on the journal and re-opening an existing journal.

JournalTxExample

Shows how to create a Journal, how to register a B+Tree on the journal, how to obtain a view of that B+Tree which is isolated by a transaction, how to do basic CRUD operations on the B+Tree, and how to commit the transaction.

ReadWriteIndexExample

Shows how to impose concurrency control on a B+Tree using a wrapper class. The B+Tree is thread-safe for readers, but not for writers. This example show how you can wrap the B+Tree with a skin backed by a ReadWriteLock.

ReadWriteIndexTxExample

Shows how to use concurrent transactions for the same B+Tree and how to detect a write-write conflict when a transaction can not commit because a concurrent transaction has already modified the same tuple and committed first.