org.apache.openjpa.jdbc.kernel

Class NativeJDBCSeq

java.lang.Object

org.apache.openjpa.jdbc.kernel.AbstractJDBCSeq

org.apache.openjpa.jdbc.kernel.NativeJDBCSeq

All Implemented Interfaces:

JDBCSeq, Seq, Configurable, Closeable

public class NativeJDBCSeq
extends AbstractJDBCSeq
implements Configurable

JDBCSeq implementation that uses a database sequence to generate numbers. Supports allocation (caching). In order for allocation to work properly, the database sequence must be defined with INCREMENT BY value equal to allocate * increment.

See Also:

JDBCSeq, AbstractJDBCSeq

Field Summary

Fields

Modifier and Type	Field and Description
static String	ACTION_ADD
static String	ACTION_DROP
static String	ACTION_GET

Fields inherited from class org.apache.openjpa.jdbc.kernel.AbstractJDBCSeq

current, type

Fields inherited from interface org.apache.openjpa.kernel.Seq

TYPE_CONTIGUOUS, TYPE_DEFAULT, TYPE_NONTRANSACTIONAL, TYPE_TRANSACTIONAL

Constructor Summary

Constructors

Constructor and Description
NativeJDBCSeq()

Method Summary

Methods

Modifier and Type	Method and Description
void	addSchema(ClassMapping mapping, SchemaGroup group) No-op.
protected void	allocateInternal(int additional, JDBCStore store, ClassMapping mapping) Allocate additional sequence values.
void	dropSequence() Drops the sequence in the DB.
void	endConfiguration() Invoked upon completion of bean property configuration for this object.
int	getAllocate()
JDBCConfiguration	getConfiguration() Return the JDBCConfiguration for this sequence.
int	getIncrement()
int	getInitialValue()
String	getSchema() Deprecated.
DBIdentifier	getSchemaIdentifier()
String	getSequence() The sequence name.
static void	main(String[] args) Usage: java org.apache.openjpa.jdbc.schema.NativeJDBCSequence [option]* -action/-a <add | drop | get> Where the following options are recognized.
protected Object	nextInternal(JDBCStore store, ClassMapping mapping) Return the next sequence object.
void	refreshSequence() Creates the sequence in the DB.
static boolean	run(JDBCConfiguration conf, String[] args, Options opts) Run the tool.
static boolean	run(JDBCConfiguration conf, String[] args, String action) Run the tool.
void	setAllocate(int allocate)
void	setConfiguration(Configuration conf) Invoked prior to setting bean properties.
void	setIncrement(int increment)
void	setInitialValue(int initial)
void	setSchema(String schema) Deprecated.
void	setSequence(String seqName) The sequence name.
void	startConfiguration() Invoked before bean property configuration is begun on this object.

Methods inherited from class org.apache.openjpa.jdbc.kernel.AbstractJDBCSeq

allocate, close, closeConnection, current, currentInternal, getConnection, next, setType, suspendInJTA

Methods inherited from class java.lang.Object

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

Field Detail

ACTION_DROP

public static final String ACTION_DROP

See Also:

Constant Field Values

ACTION_ADD

public static final String ACTION_ADD

See Also:

Constant Field Values

ACTION_GET

public static final String ACTION_GET

See Also:

Constant Field Values

Constructor Detail

NativeJDBCSeq

public NativeJDBCSeq()

Method Detail

getSequence

public String getSequence()

The sequence name. Defaults to OPENJPA_SEQUENCE.

setSequence

public void setSequence(String seqName)

The sequence name. Defaults to OPENJPA_SEQUENCE.

getInitialValue

public int getInitialValue()

See Also:

Sequence.getInitialValue()

setInitialValue

public void setInitialValue(int initial)

See Also:

Sequence.setInitialValue(int)

getAllocate

public int getAllocate()

See Also:

Sequence.getAllocate()

setAllocate

public void setAllocate(int allocate)

See Also:

Sequence.setAllocate(int)

getIncrement

public int getIncrement()

See Also:

Sequence.getIncrement()

setIncrement

public void setIncrement(int increment)

See Also:

Sequence.setIncrement(int)

addSchema

public void addSchema(ClassMapping mapping,
             SchemaGroup group)

Description copied from class: AbstractJDBCSeq

No-op.

Specified by:

addSchema in interface JDBCSeq

Overrides:

addSchema in class AbstractJDBCSeq

getConfiguration

public JDBCConfiguration getConfiguration()

Description copied from class: AbstractJDBCSeq

Return the JDBCConfiguration for this sequence.

Specified by:

getConfiguration in class AbstractJDBCSeq

setConfiguration

public void setConfiguration(Configuration conf)

Description copied from interface: Configurable

Invoked prior to setting bean properties.

Specified by:

setConfiguration in interface Configurable

startConfiguration

public void startConfiguration()

Description copied from interface: Configurable

Invoked before bean property configuration is begun on this object.

Specified by:

startConfiguration in interface Configurable

endConfiguration

public void endConfiguration()

Description copied from interface: Configurable

Invoked upon completion of bean property configuration for this object.

Specified by:

endConfiguration in interface Configurable

nextInternal

protected Object nextInternal(JDBCStore store,
                  ClassMapping mapping)
                       throws SQLException

Description copied from class: AbstractJDBCSeq

Return the next sequence object.

Specified by:

nextInternal in class AbstractJDBCSeq

Throws:

SQLException

allocateInternal

protected void allocateInternal(int additional,
                    JDBCStore store,
                    ClassMapping mapping)
                         throws SQLException

Allocate additional sequence values.

Overrides:

allocateInternal in class AbstractJDBCSeq

Parameters:

additional - ignored - the allocation size is fixed and determined by allocate and increment properties.

store - used to obtain connection

mapping - ignored

Throws:

SQLException

refreshSequence

public void refreshSequence()
                     throws SQLException

Creates the sequence in the DB.

Throws:

SQLException

dropSequence

public void dropSequence()
                  throws SQLException

Drops the sequence in the DB.

Throws:

SQLException

main

public static void main(String[] args)
                 throws Exception

Usage: java org.apache.openjpa.jdbc.schema.NativeJDBCSequence [option]* -action/-a <add | drop | get> Where the following options are recognized.

• -properties/-p <properties file or resource>: The path or resource name of an OpenJPA properties file containing information such as connection data as outlined in JDBCConfiguration. Optional.
• -<property name> <property value>: All bean properties of the OpenJPA JDBCConfiguration can be set by using their names and supplying a value.

The various actions are as follows.

• add: Create the sequence.
• drop: Drop the sequence.
• get: Print the next sequence value.

Throws:

Exception

run

public static boolean run(JDBCConfiguration conf,
          String[] args,
          Options opts)
                   throws Exception

Run the tool. Returns false if invalid options were given.

Throws:

Exception

run

public static boolean run(JDBCConfiguration conf,
          String[] args,
          String action)
                   throws Exception

Run the tool. Returns false if an invalid option was given.

Throws:

Exception

setSchema

public void setSchema(String schema)

Deprecated.

getSchema

public String getSchema()

Deprecated.

getSchemaIdentifier

public DBIdentifier getSchemaIdentifier()