Package fj.control.db
Class DbState
java.lang.Object
fj.control.db.DbState
Performs database I/O, in order to read or write the database state.
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Field Summary
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic Connector
driverManager
(String url) A simple connector (the default) that gets connections to the given database URL from the driver manager.static DbState
Returns a new reader that reads the database via the given Connector.static DbState
Creates a database state reader given a connection URL.<A> A
Runs the given database action as a single transaction.static DbState
Returns a new writer that writes the database via the given Connector.static DbState
Creates a database state writer given a connection URL.
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Field Details
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pc
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terminal
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rollback
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commit
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Constructor Details
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DbState
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Method Details
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driverManager
A simple connector (the default) that gets connections to the given database URL from the driver manager.- Parameters:
url
- The database URL to connect to.- Returns:
- A connector that generates connections to the given database.
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reader
Creates a database state reader given a connection URL.- Parameters:
url
- The connection URL to the database.- Returns:
- A database state reader that reads the given database.
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writer
Creates a database state writer given a connection URL.- Parameters:
url
- The connection URL to the database.- Returns:
- A database state writer that writes the given database.
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reader
Returns a new reader that reads the database via the given Connector.- Parameters:
pc
- A connector with which to generate database connections.- Returns:
- A new reader that reads the database via the given Connector.
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writer
Returns a new writer that writes the database via the given Connector.- Parameters:
pc
- A connector with which to generate database connections.- Returns:
- A new writer that writes the database via the given Connector.
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run
Runs the given database action as a single transaction.- Parameters:
dba
- A database action to run.- Returns:
- The result of running the action against the database.
- Throws:
SQLException
- in case of a database error.
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