org.apache.oozie.service
Class JPAService

java.lang.Object
  org.apache.oozie.service.JPAService

All Implemented Interfaces:

Service, Instrumentable

public class JPAService
extends Object
implements Service, Instrumentable

Service that manages JPA and executes JPAExecutor.

Field Summary

static String	CONF_CONN_DATA_SOURCE
static String	CONF_CREATE_DB_SCHEMA
static String	CONF_DB_SCHEMA
static String	CONF_DRIVER
static String	CONF_MAX_ACTIVE_CONN
static String	CONF_PASSWORD
static String	CONF_PREFIX
static String	CONF_URL
static String	CONF_USERNAME
static String	CONF_VALIDATE_DB_CONN
static String	CONF_VALIDATE_DB_CONN_EVICTION_INTERVAL
static String	CONF_VALIDATE_DB_CONN_EVICTION_NUM

Fields inherited from interface org.apache.oozie.service.Service

DEFAULT_LOCK_TIMEOUT, lockTimeout, USE_XCOMMAND

Constructor Summary

JPAService()

Method Summary

void	destroy() Destroy the JPAService
<T> T	execute(JPAExecutor<T> executor) Execute a JPAExecutor.
Class<? extends Service>	getInterface() Return the public interface of the service.
void	init(Services services) Initializes the JPAService.
void	instrument(Instrumentation instr) Set the system instrumentation.

Methods inherited from class java.lang.Object

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

Field Detail

CONF_DB_SCHEMA

public static final String CONF_DB_SCHEMA

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Constant Field Values

CONF_PREFIX

public static final String CONF_PREFIX

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Constant Field Values

CONF_URL

public static final String CONF_URL

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Constant Field Values

CONF_DRIVER

public static final String CONF_DRIVER

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Constant Field Values

CONF_USERNAME

public static final String CONF_USERNAME

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Constant Field Values

CONF_PASSWORD

public static final String CONF_PASSWORD

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Constant Field Values

CONF_CONN_DATA_SOURCE

public static final String CONF_CONN_DATA_SOURCE

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Constant Field Values

CONF_MAX_ACTIVE_CONN

public static final String CONF_MAX_ACTIVE_CONN

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Constant Field Values

CONF_CREATE_DB_SCHEMA

public static final String CONF_CREATE_DB_SCHEMA

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Constant Field Values

CONF_VALIDATE_DB_CONN

public static final String CONF_VALIDATE_DB_CONN

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Constant Field Values

CONF_VALIDATE_DB_CONN_EVICTION_INTERVAL

public static final String CONF_VALIDATE_DB_CONN_EVICTION_INTERVAL

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Constant Field Values

CONF_VALIDATE_DB_CONN_EVICTION_NUM

public static final String CONF_VALIDATE_DB_CONN_EVICTION_NUM

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Constant Field Values

Constructor Detail

JPAService

public JPAService()

Method Detail

getInterface

public Class<? extends Service> getInterface()

Return the public interface of the service.

Specified by:

getInterface in interface Service

Returns:

JPAService.

instrument

public void instrument(Instrumentation instr)

Description copied from interface: Instrumentable

Set the system instrumentation.

Specified by:

instrument in interface Instrumentable

Parameters:

instr - system instrumentation.

init

public void init(Services services)
          throws ServiceException

Initializes the JPAService.

Specified by:

init in interface Service

Parameters:

services - services instance.

Throws:

ServiceException - thrown if the service could not initialize.

destroy

public void destroy()

Destroy the JPAService

Specified by:

destroy in interface Service

execute

public <T> T execute(JPAExecutor<T> executor)
          throws JPAExecutorException

Execute a JPAExecutor.

Parameters:

executor - JPAExecutor to execute.

Returns:

return value of the JPAExecutor.

Throws:

JPAExecutorException - thrown if an jpa executor failed