org.springframework.r2dbc.connection.init

Class ResourceDatabasePopulator

java.lang.Object

org.springframework.r2dbc.connection.init.ResourceDatabasePopulator

All Implemented Interfaces:

DatabasePopulator

public class ResourceDatabasePopulator
extends Object
implements DatabasePopulator

Populates, initializes, or cleans up a database using SQL scripts defined in external resources.

• Call addScript(org.springframework.core.io.Resource) to add a single SQL script location.
• Call addScripts(org.springframework.core.io.Resource...) to add multiple SQL script locations.
• Consult the setter methods in this class for further configuration options.
• Call populate(io.r2dbc.spi.Connection) to initialize or clean up the database using the configured scripts.

Since:

5.3

Author:

Keith Donald, Dave Syer, Juergen Hoeller, Chris Beams, Oliver Gierke, Sam Brannen, Chris Baldwin, Phillip Webb, Mark Paluch

See Also:

ScriptUtils

Constructor Summary

Constructors

Constructor and Description
ResourceDatabasePopulator() Create a new ResourceDatabasePopulator with default settings.
ResourceDatabasePopulator(boolean continueOnError, boolean ignoreFailedDrops, String sqlScriptEncoding, Resource... scripts) Construct a new ResourceDatabasePopulator with the supplied values.
ResourceDatabasePopulator(Resource... scripts) Create a new ResourceDatabasePopulator with default settings for the supplied scripts.

Method Summary

Modifier and Type	Method and Description
void	addScript(Resource script) Add a script to execute to initialize or clean up the database.
void	addScripts(Resource... scripts) Add multiple scripts to execute to initialize or clean up the database.
reactor.core.publisher.Mono<Void>	populate(io.r2dbc.spi.Connection connection) Populate, initialize, or clean up the database using the provided R2DBC Connection.
void	setBlockCommentEndDelimiter(String blockCommentEndDelimiter) Set the end delimiter that identifies block comments within the SQL scripts.
void	setBlockCommentStartDelimiter(String blockCommentStartDelimiter) Set the start delimiter that identifies block comments within the SQL scripts.
void	setCommentPrefix(String commentPrefix) Set the prefix that identifies single-line comments within the SQL scripts.
void	setCommentPrefixes(String... commentPrefixes) Set the prefixes that identify single-line comments within the SQL scripts.
void	setContinueOnError(boolean continueOnError) Flag to indicate that all failures in SQL should be logged but not cause a failure.
void	setDataBufferFactory(DataBufferFactory dataBufferFactory) Set the DataBufferFactory to use for Resource loading.
void	setIgnoreFailedDrops(boolean ignoreFailedDrops) Flag to indicate that a failed SQL DROP statement can be ignored.
void	setScripts(Resource... scripts) Set the scripts to execute to initialize or clean up the database, replacing any previously added scripts.
void	setSeparator(String separator) Specify the statement separator, if a custom one.
void	setSqlScriptEncoding(Charset sqlScriptEncoding) Specify the encoding for the configured SQL scripts, if different from the platform encoding.
void	setSqlScriptEncoding(String sqlScriptEncoding) Specify the encoding for the configured SQL scripts, if different from the platform encoding.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.r2dbc.connection.init.DatabasePopulator

populate

Constructor Detail

ResourceDatabasePopulator

public ResourceDatabasePopulator()

Create a new ResourceDatabasePopulator with default settings.

ResourceDatabasePopulator

public ResourceDatabasePopulator(Resource... scripts)

Create a new ResourceDatabasePopulator with default settings for the supplied scripts.

Parameters:

scripts - the scripts to execute to initialize or clean up the database (never null)

ResourceDatabasePopulator

public ResourceDatabasePopulator(boolean continueOnError,
                                 boolean ignoreFailedDrops,
                                 @Nullable
                                 String sqlScriptEncoding,
                                 Resource... scripts)

Construct a new ResourceDatabasePopulator with the supplied values.

Parameters:

continueOnError - flag to indicate that all failures in SQL should be logged but not cause a failure

ignoreFailedDrops - flag to indicate that a failed SQL DROP statement can be ignored

sqlScriptEncoding - the encoding for the supplied SQL scripts (may be null or empty to indicate platform encoding)

scripts - the scripts to execute to initialize or clean up the database (never null)

Method Detail

addScript

public void addScript(Resource script)

Add a script to execute to initialize or clean up the database.

Parameters:

script - the path to an SQL script (never null)

addScripts

public void addScripts(Resource... scripts)

Add multiple scripts to execute to initialize or clean up the database.

Parameters:

scripts - the scripts to execute (never null)

setScripts

public void setScripts(Resource... scripts)

Set the scripts to execute to initialize or clean up the database, replacing any previously added scripts.

Parameters:

scripts - the scripts to execute (never null)

setSqlScriptEncoding

public void setSqlScriptEncoding(@Nullable
                                 String sqlScriptEncoding)

Specify the encoding for the configured SQL scripts, if different from the platform encoding.

Parameters:

sqlScriptEncoding - the encoding used in scripts (may be null or empty to indicate platform encoding)

See Also:

addScript(Resource)

setSqlScriptEncoding

public void setSqlScriptEncoding(@Nullable
                                 Charset sqlScriptEncoding)

Specify the encoding for the configured SQL scripts, if different from the platform encoding.

Parameters:

sqlScriptEncoding - the encoding used in scripts (may be null or empty to indicate platform encoding)

See Also:

addScript(Resource)

setSeparator

public void setSeparator(String separator)

Specify the statement separator, if a custom one.

Defaults to ";" if not specified and falls back to "\n" as a last resort; may be set to ScriptUtils.EOF_STATEMENT_SEPARATOR to signal that each script contains a single statement without a separator.

Parameters:

separator - the script statement separator

setCommentPrefix

public void setCommentPrefix(String commentPrefix)

Set the prefix that identifies single-line comments within the SQL scripts.

Defaults to "--".

Parameters:

commentPrefix - the prefix for single-line comments

See Also:

setCommentPrefixes(String...)

setCommentPrefixes

public void setCommentPrefixes(String... commentPrefixes)

Set the prefixes that identify single-line comments within the SQL scripts.

Defaults to ["--"].

Parameters:

commentPrefixes - the prefixes for single-line comments

setBlockCommentStartDelimiter

public void setBlockCommentStartDelimiter(String blockCommentStartDelimiter)

Set the start delimiter that identifies block comments within the SQL scripts.

Defaults to "/*".

Parameters:

blockCommentStartDelimiter - the start delimiter for block comments (never null or empty)

See Also:

setBlockCommentEndDelimiter(java.lang.String)

setBlockCommentEndDelimiter

public void setBlockCommentEndDelimiter(String blockCommentEndDelimiter)

Set the end delimiter that identifies block comments within the SQL scripts.

Defaults to "*/".

Parameters:

blockCommentEndDelimiter - the end delimiter for block comments (never null or empty)

See Also:

setBlockCommentStartDelimiter(java.lang.String)

setContinueOnError

public void setContinueOnError(boolean continueOnError)

Flag to indicate that all failures in SQL should be logged but not cause a failure.

Defaults to false.

Parameters:

continueOnError - true if script execution should continue on error

setIgnoreFailedDrops

public void setIgnoreFailedDrops(boolean ignoreFailedDrops)

Flag to indicate that a failed SQL DROP statement can be ignored.

This is useful for a non-embedded database whose SQL dialect does not support an IF EXISTS clause in a DROP statement.

The default is false so that if the populator runs accidentally, it will fail fast if a script starts with a DROP statement.

Parameters:

ignoreFailedDrops - true if failed drop statements should be ignored

setDataBufferFactory

public void setDataBufferFactory(DataBufferFactory dataBufferFactory)

Set the DataBufferFactory to use for Resource loading.

Defaults to DefaultDataBufferFactory.

Parameters:

dataBufferFactory - the DataBufferFactory to use, must not be null

populate

public reactor.core.publisher.Mono<Void> populate(io.r2dbc.spi.Connection connection)
                                           throws ScriptException

Description copied from interface: DatabasePopulator

Populate, initialize, or clean up the database using the provided R2DBC Connection.

Specified by:

populate in interface DatabasePopulator

Parameters:

connection - the R2DBC connection to use to populate the db; already configured and ready to use, must not be null

Returns:

Mono that initiates script execution and is notified upon completion

Throws:

ScriptException - in all other error cases