Package de.softwareforge.testing.postgres.embedded

Class EmbeddedPostgres

java.lang.Object

de.softwareforge.testing.postgres.embedded.EmbeddedPostgres

All Implemented Interfaces:

AutoCloseable

public final class EmbeddedPostgres
extends Object
implements AutoCloseable

Manages an embedded PostgreSQL server instance.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EmbeddedPostgres.Builder	Creates a new EmbeddedPostgres instance and starts it.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_POSTGRES_VERSION	The version of postgres used if no specific version has been given.

Method Summary

Modifier and Type	Method	Description
static EmbeddedPostgres.Builder	builder()	Returns a new EmbeddedPostgres.Builder.
static EmbeddedPostgres.Builder	builderWithDefaults()	Returns a builder with default EmbeddedPostgres.Builder.withDefaults() configuration already applied.
void	close()	Closing an EmbeddedPostgres instance shuts down the connected database instance.
DataSource	createDataSource(String user, String databaseName)	Creates a DataSource with a specific user and database name.
DataSource	createDefaultDataSource()	Creates a DataSource object that connects to the default database.
DataSource	createTemplateDataSource()	Creates a DataSource object that connects to the standard system database.
static EmbeddedPostgres	defaultInstance()	Returns an instance that has been started and configured.
boolean	equals(Object o)
static EmbeddedPostgres	forVersionCheck()	This returns an EmbeddedPostgres instance that can be solely used for version checking.
int	getPort()	Returns the network (TCP) port for the PostgreSQL server instance.
String	getPostgresVersion()	Return the version of the PostgreSQL installation that is used by this instance.
int	hashCode()
String	instanceId()	Returns the instance id for the PostgreSQL server instance.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

DEFAULT_POSTGRES_VERSION

public static final String DEFAULT_POSTGRES_VERSION

The version of postgres used if no specific version has been given.

See Also:

• Constant Field Values

Method Details

defaultInstance

@Nonnull
public static EmbeddedPostgres defaultInstance()
                                        throws IOException

Returns an instance that has been started and configured. The EmbeddedPostgres.Builder.withDefaults() configuration has been applied.

Throws:

IOException

builderWithDefaults

@Nonnull
public static EmbeddedPostgres.Builder builderWithDefaults()

Returns a builder with default EmbeddedPostgres.Builder.withDefaults() configuration already applied.

forVersionCheck

public static EmbeddedPostgres forVersionCheck()
                                        throws IOException

This returns an EmbeddedPostgres instance that can be solely used for version checking. It has not been booted and will not work for any other things but executing getPostgresVersion(). This is a performance optimization for code that needs to do version checking and does not want to pay the penalty of spinning up and shutting down an instance.

Returns:

An unstarted EmbeddedPostgres instance.

Throws:

IOException - Could not create the instance.

Since:

4.1

builder

@Nonnull
public static EmbeddedPostgres.Builder builder()

Returns a new EmbeddedPostgres.Builder.

createTemplateDataSource

@Nonnull
public DataSource createTemplateDataSource()
                                    throws SQLException

Creates a DataSource object that connects to the standard system database.

The standard system database is the template1 database.

Any modification to this database will be propagated to any new database that is created with CREATE DATABASE... unless another database is explicitly named as the template..

Throws:

SQLException

createDefaultDataSource

@Nonnull
public DataSource createDefaultDataSource()
                                   throws SQLException

Creates a DataSource object that connects to the default database.

The default database is the postgres database.

Throws:

SQLException

createDataSource

@Nonnull
public DataSource createDataSource(@Nonnull
 String user,
 @Nonnull
 String databaseName)
                            throws SQLException

Creates a DataSource with a specific user and database name.

Creating the DataSource does not create the database or the user itself. This must be done by the calling code (e.g. with a EmbeddedPostgresPreparer).

Throws:

SQLException

getPort

public int getPort()

Returns the network (TCP) port for the PostgreSQL server instance.

instanceId

@Nonnull
public String instanceId()

Returns the instance id for the PostgreSQL server instance. This id is an alphanumeric string that can be used to differentiate between multiple embedded PostgreSQL server instances.

getPostgresVersion

public String getPostgresVersion()
                          throws IOException

Return the version of the PostgreSQL installation that is used by this instance.

Returns:

A string representing the Postgres version as described in the Postgres versioning policy.

Throws:

IOException

Since:

4.1

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

close

public void close()
           throws IOException

Closing an EmbeddedPostgres instance shuts down the connected database instance.

Specified by:

close in interface AutoCloseable

Throws:

IOException