org.apache.commons.dbcp.datasources
Class PerUserPoolDataSource

java.lang.Object
  extended by org.apache.commons.dbcp.datasources.InstanceKeyDataSource
      extended by org.apache.commons.dbcp.datasources.PerUserPoolDataSource
All Implemented Interfaces:
Serializable, Wrapper, Referenceable, CommonDataSource, DataSource

public class PerUserPoolDataSource
extends InstanceKeyDataSource

A pooling DataSource appropriate for deployment within J2EE environment. There are many configuration options, most of which are defined in the parent class. This datasource uses individual pools per user, and some properties can be set specifically for a given user, if the deployment environment can support initialization of mapped properties. So for example, a pool of admin or write-access Connections can be guaranteed a certain number of connections, separate from a maximum set for users with read-only connections.

User passwords can be changed without re-initializing the datasource. When a getConnection(username, password) request is processed with a password that is different from those used to create connections in the pool associated with username, an attempt is made to create a new connection using the supplied password and if this succeeds, the existing pool is cleared and a new pool is created for connections using the new password.

Version:
$Revision: 892307 $ $Date: 2014-01-01 00:27:28 +0100 (Wed, 01 Jan 2014) $
Author:
John D. McNally
See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.apache.commons.dbcp.datasources.InstanceKeyDataSource
instanceKey, UNKNOWN_TRANSACTIONISOLATION
 
Constructor Summary
PerUserPoolDataSource()
          Default no-arg constructor for Serialization
 
Method Summary
 void close()
          Close pool(s) being maintained by this datasource.
protected  org.apache.commons.dbcp.datasources.PooledConnectionManager getConnectionManager(org.apache.commons.dbcp.datasources.UserPassKey upkey)
           
 int getDefaultMaxActive()
          The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit.
 int getDefaultMaxIdle()
          The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit.
 int getDefaultMaxWait()
          The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely.
 int getNumActive()
          Get the number of active connections in the default pool.
 int getNumActive(String username, String password)
          Get the number of active connections in the pool for a given user.
 int getNumIdle()
          Get the number of idle connections in the default pool.
 int getNumIdle(String username, String password)
          Get the number of idle connections in the pool for a given user.
 Boolean getPerUserDefaultAutoCommit(String key)
          The keys are usernames and the value is the --.
 Boolean getPerUserDefaultReadOnly(String username)
          The keys are usernames and the value is the --.
 Integer getPerUserDefaultTransactionIsolation(String username)
          The isolation level of connections when returned from getConnection.
 Integer getPerUserMaxActive(String username)
          The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit.
 Integer getPerUserMaxIdle(String username)
          The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit.
 Integer getPerUserMaxWait(String username)
          The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely.
protected  org.apache.commons.dbcp.datasources.PooledConnectionAndInfo getPooledConnectionAndInfo(String username, String password)
           
 Reference getReference()
          Returns a PerUserPoolDataSource Reference.
 void setDefaultMaxActive(int maxActive)
          The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit.
 void setDefaultMaxIdle(int defaultMaxIdle)
          The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit.
 void setDefaultMaxWait(int defaultMaxWait)
          The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely.
 void setPerUserDefaultAutoCommit(String username, Boolean value)
          The keys are usernames and the value is the --.
 void setPerUserDefaultReadOnly(String username, Boolean value)
          The keys are usernames and the value is the --.
 void setPerUserDefaultTransactionIsolation(String username, Integer value)
          The isolation level of connections when returned from getConnection.
 void setPerUserMaxActive(String username, Integer value)
          The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit.
 void setPerUserMaxIdle(String username, Integer value)
          The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit.
 void setPerUserMaxWait(String username, Integer value)
          The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely.
protected  void setupDefaults(Connection con, String username)
           
 
Methods inherited from class org.apache.commons.dbcp.datasources.InstanceKeyDataSource
assertInitializationAllowed, getConnection, getConnection, getConnectionPoolDataSource, getDataSourceName, getDefaultTransactionIsolation, getDescription, getJndiEnvironment, getLoginTimeout, getLogWriter, getMinEvictableIdleTimeMillis, getNumTestsPerEvictionRun, getTestOnBorrow, getTestOnReturn, getTestWhileIdle, getTimeBetweenEvictionRunsMillis, getValidationQuery, isDefaultAutoCommit, isDefaultReadOnly, isRollbackAfterValidation, isTestOnBorrow, isTestOnReturn, isTestWhileIdle, isWrapperFor, setConnectionPoolDataSource, setDataSourceName, setDefaultAutoCommit, setDefaultReadOnly, setDefaultTransactionIsolation, setDescription, setJndiEnvironment, setLoginTimeout, setLogWriter, setMinEvictableIdleTimeMillis, setNumTestsPerEvictionRun, setRollbackAfterValidation, setTestOnBorrow, setTestOnReturn, setTestWhileIdle, setTimeBetweenEvictionRunsMillis, setValidationQuery, testCPDS, unwrap, whenExhaustedAction
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PerUserPoolDataSource

public PerUserPoolDataSource()
Default no-arg constructor for Serialization

Method Detail

close

public void close()
Close pool(s) being maintained by this datasource.

Specified by:
close in class InstanceKeyDataSource

getDefaultMaxActive

public int getDefaultMaxActive()
The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit. This value is used for any username which is not specified in perUserMaxConnections.


setDefaultMaxActive

public void setDefaultMaxActive(int maxActive)
The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit. This value is used for any username which is not specified in perUserMaxConnections. The default is 8.


getDefaultMaxIdle

public int getDefaultMaxIdle()
The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit. This value is used for any username which is not specified in perUserMaxIdle.


setDefaultMaxIdle

public void setDefaultMaxIdle(int defaultMaxIdle)
The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit. This value is used for any username which is not specified in perUserMaxIdle. The default is 8.


getDefaultMaxWait

public int getDefaultMaxWait()
The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely. Will fail immediately if value is 0. This value is used for any username which is not specified in perUserMaxWait. The default is -1.


setDefaultMaxWait

public void setDefaultMaxWait(int defaultMaxWait)
The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely. Will fail immediately if value is 0. This value is used for any username which is not specified in perUserMaxWait. The default is -1.


getPerUserDefaultAutoCommit

public Boolean getPerUserDefaultAutoCommit(String key)
The keys are usernames and the value is the --. Any username specified here will override the value of defaultAutoCommit.


setPerUserDefaultAutoCommit

public void setPerUserDefaultAutoCommit(String username,
                                        Boolean value)
The keys are usernames and the value is the --. Any username specified here will override the value of defaultAutoCommit.


getPerUserDefaultTransactionIsolation

public Integer getPerUserDefaultTransactionIsolation(String username)
The isolation level of connections when returned from getConnection. If null, the username will use the value of defaultTransactionIsolation.


setPerUserDefaultTransactionIsolation

public void setPerUserDefaultTransactionIsolation(String username,
                                                  Integer value)
The isolation level of connections when returned from getConnection. Valid values are the constants defined in Connection.


getPerUserMaxActive

public Integer getPerUserMaxActive(String username)
The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit. The keys are usernames and the value is the maximum connections. Any username specified here will override the value of defaultMaxActive.


setPerUserMaxActive

public void setPerUserMaxActive(String username,
                                Integer value)
The maximum number of active connections that can be allocated from this pool at the same time, or non-positive for no limit. The keys are usernames and the value is the maximum connections. Any username specified here will override the value of defaultMaxActive.


getPerUserMaxIdle

public Integer getPerUserMaxIdle(String username)
The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit. The keys are usernames and the value is the maximum connections. Any username specified here will override the value of defaultMaxIdle.


setPerUserMaxIdle

public void setPerUserMaxIdle(String username,
                              Integer value)
The maximum number of active connections that can remain idle in the pool, without extra ones being released, or negative for no limit. The keys are usernames and the value is the maximum connections. Any username specified here will override the value of defaultMaxIdle.


getPerUserMaxWait

public Integer getPerUserMaxWait(String username)
The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely. Will fail immediately if value is 0. The keys are usernames and the value is the maximum connections. Any username specified here will override the value of defaultMaxWait.


setPerUserMaxWait

public void setPerUserMaxWait(String username,
                              Integer value)
The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception, or -1 to wait indefinitely. Will fail immediately if value is 0. The keys are usernames and the value is the maximum connections. Any username specified here will override the value of defaultMaxWait.


getPerUserDefaultReadOnly

public Boolean getPerUserDefaultReadOnly(String username)
The keys are usernames and the value is the --. Any username specified here will override the value of defaultReadOnly.


setPerUserDefaultReadOnly

public void setPerUserDefaultReadOnly(String username,
                                      Boolean value)
The keys are usernames and the value is the --. Any username specified here will override the value of defaultReadOnly.


getNumActive

public int getNumActive()
Get the number of active connections in the default pool.


getNumActive

public int getNumActive(String username,
                        String password)
Get the number of active connections in the pool for a given user.


getNumIdle

public int getNumIdle()
Get the number of idle connections in the default pool.


getNumIdle

public int getNumIdle(String username,
                      String password)
Get the number of idle connections in the pool for a given user.


getPooledConnectionAndInfo

protected org.apache.commons.dbcp.datasources.PooledConnectionAndInfo getPooledConnectionAndInfo(String username,
                                                                                                 String password)
                                                                                          throws SQLException
Specified by:
getPooledConnectionAndInfo in class InstanceKeyDataSource
Throws:
SQLException

setupDefaults

protected void setupDefaults(Connection con,
                             String username)
                      throws SQLException
Specified by:
setupDefaults in class InstanceKeyDataSource
Throws:
SQLException

getConnectionManager

protected org.apache.commons.dbcp.datasources.PooledConnectionManager getConnectionManager(org.apache.commons.dbcp.datasources.UserPassKey upkey)
Specified by:
getConnectionManager in class InstanceKeyDataSource

getReference

public Reference getReference()
                       throws NamingException
Returns a PerUserPoolDataSource Reference.

Specified by:
getReference in interface Referenceable
Overrides:
getReference in class InstanceKeyDataSource
Returns:
The non-null Reference of this object.
Throws:
NamingException - If a naming exception was encountered while retrieving the reference.
Since:
1.2.2


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