org.springframework.jdbc.datasource.embedded

Class EmbeddedDatabaseBuilder

java.lang.Object

org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder

public class EmbeddedDatabaseBuilder
extends Object

A builder that provides a convenient API for constructing an embedded database.

Usage Example

 EmbeddedDatabase db = new EmbeddedDatabaseBuilder()
     .setType(H2)
     .setScriptEncoding("UTF-8")
     .ignoreFailedDrops(true)
     .addScript("schema.sql")
     .addScripts("user_data.sql", "country_data.sql")
     .build();

 // ...

 db.shutdown();
 

Since:

3.0

Author:

Keith Donald, Juergen Hoeller, Dave Syer, Sam Brannen

See Also:

ScriptUtils, ResourceDatabasePopulator, DatabasePopulatorUtils

Constructor Summary

Constructors

Constructor and Description
EmbeddedDatabaseBuilder() Create a new embedded database builder with a DefaultResourceLoader.
EmbeddedDatabaseBuilder(ResourceLoader resourceLoader) Create a new embedded database builder with the given ResourceLoader.

Method Summary

Modifier and Type	Method and Description
EmbeddedDatabaseBuilder	addDefaultScripts() Add default SQL scripts to execute to populate the database.
EmbeddedDatabaseBuilder	addScript(String script) Add an SQL script to execute to initialize or populate the database.
EmbeddedDatabaseBuilder	addScripts(String... scripts) Add multiple SQL scripts to execute to initialize or populate the database.
EmbeddedDatabase	build() Build the embedded database.
EmbeddedDatabaseBuilder	continueOnError(boolean flag) Specify that all failures which occur while executing SQL scripts should be logged but should not cause a failure.
EmbeddedDatabaseBuilder	generateUniqueName(boolean flag) Specify whether a unique ID should be generated and used as the database name.
EmbeddedDatabaseBuilder	ignoreFailedDrops(boolean flag) Specify that a failed SQL DROP statement within an executed script can be ignored.
EmbeddedDatabaseBuilder	setBlockCommentEndDelimiter(String blockCommentEndDelimiter) Specify the end delimiter for block comments in all SQL scripts.
EmbeddedDatabaseBuilder	setBlockCommentStartDelimiter(String blockCommentStartDelimiter) Specify the start delimiter for block comments in all SQL scripts.
EmbeddedDatabaseBuilder	setCommentPrefix(String commentPrefix) Specify the single-line comment prefix used in all SQL scripts.
EmbeddedDatabaseBuilder	setDataSourceFactory(DataSourceFactory dataSourceFactory) Set the factory to use to create the DataSource instance that connects to the embedded database.
EmbeddedDatabaseBuilder	setName(String databaseName) Set the name of the embedded database.
EmbeddedDatabaseBuilder	setScriptEncoding(String scriptEncoding) Specify the character encoding used in all SQL scripts, if different from the platform encoding.
EmbeddedDatabaseBuilder	setSeparator(String separator) Specify the statement separator used in all SQL scripts, if a custom one.
EmbeddedDatabaseBuilder	setType(EmbeddedDatabaseType databaseType) Set the type of embedded database.

Methods inherited from class java.lang.Object

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

Constructor Detail

EmbeddedDatabaseBuilder

public EmbeddedDatabaseBuilder()

Create a new embedded database builder with a DefaultResourceLoader.

EmbeddedDatabaseBuilder

public EmbeddedDatabaseBuilder(ResourceLoader resourceLoader)

Create a new embedded database builder with the given ResourceLoader.

Parameters:

resourceLoader - the ResourceLoader to delegate to

Method Detail

generateUniqueName

public EmbeddedDatabaseBuilder generateUniqueName(boolean flag)

Specify whether a unique ID should be generated and used as the database name.

If the configuration for this builder is reused across multiple application contexts within a single JVM, this flag should be enabled (i.e., set to true) in order to ensure that each application context gets its own embedded database.

Enabling this flag overrides any explicit name set via setName(java.lang.String).

Parameters:

flag - true if a unique database name should be generated

Returns:

this, to facilitate method chaining

Since:

4.2

See Also:

setName(java.lang.String)

setName

public EmbeddedDatabaseBuilder setName(String databaseName)

Set the name of the embedded database.

Defaults to EmbeddedDatabaseFactory.DEFAULT_DATABASE_NAME if not called.

Will be overridden if the generateUniqueName flag has been set to true.

Parameters:

databaseName - the name of the embedded database to build

Returns:

this, to facilitate method chaining

See Also:

generateUniqueName(boolean)

setType

public EmbeddedDatabaseBuilder setType(EmbeddedDatabaseType databaseType)

Set the type of embedded database.

Defaults to HSQL if not called.

Parameters:

databaseType - the type of embedded database to build

Returns:

this, to facilitate method chaining

setDataSourceFactory

public EmbeddedDatabaseBuilder setDataSourceFactory(DataSourceFactory dataSourceFactory)

Set the factory to use to create the DataSource instance that connects to the embedded database.

Defaults to SimpleDriverDataSourceFactory but can be overridden, for example to introduce connection pooling.

Returns:

this, to facilitate method chaining

Since:

4.0.3

addDefaultScripts

public EmbeddedDatabaseBuilder addDefaultScripts()

Add default SQL scripts to execute to populate the database.

The default scripts are "schema.sql" to create the database schema and "data.sql" to populate the database with data.

Returns:

this, to facilitate method chaining

addScript

public EmbeddedDatabaseBuilder addScript(String script)

Add an SQL script to execute to initialize or populate the database.

Parameters:

script - the script to execute

Returns:

this, to facilitate method chaining

addScripts

public EmbeddedDatabaseBuilder addScripts(String... scripts)

Add multiple SQL scripts to execute to initialize or populate the database.

Parameters:

scripts - the scripts to execute

Returns:

this, to facilitate method chaining

Since:

4.0.3

setScriptEncoding

public EmbeddedDatabaseBuilder setScriptEncoding(String scriptEncoding)

Specify the character encoding used in all SQL scripts, if different from the platform encoding.

Parameters:

scriptEncoding - the encoding used in scripts

Returns:

this, to facilitate method chaining

Since:

4.0.3

setSeparator

public EmbeddedDatabaseBuilder setSeparator(String separator)

Specify the statement separator used in all SQL scripts, 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 statement separator

Returns:

this, to facilitate method chaining

Since:

4.0.3

setCommentPrefix

public EmbeddedDatabaseBuilder setCommentPrefix(String commentPrefix)

Specify the single-line comment prefix used in all SQL scripts.

Defaults to "--".

Parameters:

commentPrefix - the prefix for single-line comments

Returns:

this, to facilitate method chaining

Since:

4.0.3

setBlockCommentStartDelimiter

public EmbeddedDatabaseBuilder setBlockCommentStartDelimiter(String blockCommentStartDelimiter)

Specify the start delimiter for block comments in all SQL scripts.

Defaults to "/*".

Parameters:

blockCommentStartDelimiter - the start delimiter for block comments

Returns:

this, to facilitate method chaining

Since:

4.0.3

See Also:

setBlockCommentEndDelimiter(java.lang.String)

setBlockCommentEndDelimiter

public EmbeddedDatabaseBuilder setBlockCommentEndDelimiter(String blockCommentEndDelimiter)

Specify the end delimiter for block comments in all SQL scripts.

Defaults to "*/".

Parameters:

blockCommentEndDelimiter - the end delimiter for block comments

Returns:

this, to facilitate method chaining

Since:

4.0.3

See Also:

setBlockCommentStartDelimiter(java.lang.String)

continueOnError

public EmbeddedDatabaseBuilder continueOnError(boolean flag)

Specify that all failures which occur while executing SQL scripts should be logged but should not cause a failure.

Defaults to false.

Parameters:

flag - true if script execution should continue on error

Returns:

this, to facilitate method chaining

Since:

4.0.3

ignoreFailedDrops

public EmbeddedDatabaseBuilder ignoreFailedDrops(boolean flag)

Specify that a failed SQL DROP statement within an executed script can be ignored.

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

The default is false so that building will fail fast if a script starts with a DROP statement.

Parameters:

flag - true if failed drop statements should be ignored

Returns:

this, to facilitate method chaining

Since:

4.0.3

build

public EmbeddedDatabase build()

Build the embedded database.

Returns:

the embedded database