Package 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()
     .generateUniqueName(true)
     .setType(H2)
     .setScriptEncoding("UTF-8")
     .ignoreFailedDrops(true)
     .addScript("schema.sql")
     .addScripts("user_data.sql", "country_data.sql")
     .build();

 // perform actions against the db (EmbeddedDatabase extends javax.sql.DataSource)

 db.shutdown();
Since:
3.0
Author:
Keith Donald, Juergen Hoeller, Dave Syer, Sam Brannen
See Also:

  • Constructor Details

    • 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 Details

    • 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

      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:

    • 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
      See Also:

    • setCommentPrefixes

      public EmbeddedDatabaseBuilder setCommentPrefixes(String... commentPrefixes)
      Specify the prefixes that identify single-line comments within all SQL scripts.

      Defaults to ["--"].

      Parameters:
      commentPrefixes - the prefixes for single-line comments
      Returns:
      this, to facilitate method chaining
      Since:
      5.2

    • 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

      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:

    • 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