InstanceKeyDataSource (Apache Tomcat 8.0.15 API Documentation)

java.lang.Object
- org.apache.tomcat.dbcp.dbcp2.datasources.InstanceKeyDataSource

All Implemented Interfaces:

Serializable, Wrapper, Referenceable, CommonDataSource, DataSource

Direct Known Subclasses:

PerUserPoolDataSource, SharedPoolDataSource
```
public abstract class InstanceKeyDataSource
extends Object
implements DataSource, Referenceable, Serializable
```
The base class for SharedPoolDataSource and PerUserPoolDataSource. Many of the configuration properties are shared and defined here. This class is declared public in order to allow particular usage with commons-beanutils; do not make direct use of it outside of commons-dbcp.

A J2EE container will normally provide some method of initializing the DataSource whose attributes are presented as bean getters/setters and then deploying it via JNDI. It is then available to an application as a source of pooled logical connections to the database. The pool needs a source of physical connections. This source is in the form of a ConnectionPoolDataSource that can be specified via the setDataSourceName(String) used to lookup the source via JNDI.

Although normally used within a JNDI environment, A DataSource can be instantiated and initialized as any bean. In this case the ConnectionPoolDataSource will likely be instantiated in a similar manner. This class allows the physical source of connections to be attached directly to this pool using the setConnectionPoolDataSource(ConnectionPoolDataSource) method.

The dbcp package contains an adapter, DriverAdapterCPDS, that can be used to allow the use of DataSource's based on this class with jdbc driver implementations that do not supply a ConnectionPoolDataSource, but still provide a Driver implementation.

The package documentation contains an example using Apache Tomcat and JNDI and it also contains a non-JNDI example.

Since:

2.0

Author:

John D. McNally

See Also:
Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

protected static int UNKNOWN_TRANSACTIONISOLATION
Internal constant to indicate the level is not set.

Fields
Modifier and Type	Field and Description
`protected static int`	`UNKNOWN_TRANSACTIONISOLATION` Internal constant to indicate the level is not set.

Constructor Summary

Constructors
Constructor and Description

InstanceKeyDataSource()
Default no-arg constructor for Serialization

Constructors
Constructor and Description
`InstanceKeyDataSource()` Default no-arg constructor for Serialization

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`assertInitializationAllowed()` Throws an IllegalStateException, if a PooledConnection has already been requested.
`abstract void`	`close()` Close the connection pool being maintained by this datasource.
`Connection`	`getConnection()` Attempt to establish a database connection.
`Connection`	`getConnection(String username, String password)` Attempt to retrieve a database connection using `getPooledConnectionAndInfo(String, String)` with the provided username and password.
`protected abstract org.apache.tomcat.dbcp.dbcp2.datasources.PooledConnectionManager`	`getConnectionManager(org.apache.tomcat.dbcp.dbcp2.datasources.UserPassKey upkey)`
`ConnectionPoolDataSource`	`getConnectionPoolDataSource()` Get the value of connectionPoolDataSource.
`String`	`getDataSourceName()` Get the name of the ConnectionPoolDataSource which backs this pool.
`boolean`	`getDefaultBlockWhenExhausted()` Gets the default value for `BaseObjectPoolConfig.getBlockWhenExhausted()` for each per user pool.
`String`	`getDefaultEvictionPolicyClassName()` Gets the default value for `BaseObjectPoolConfig.getEvictionPolicyClassName()` for each per user pool.
`boolean`	`getDefaultLifo()` Gets the default value for `BaseObjectPoolConfig.getLifo()` for each per user pool.
`int`	`getDefaultMaxIdle()` Gets the default value for `GenericKeyedObjectPoolConfig.getMaxIdlePerKey()` for each per user pool.
`int`	`getDefaultMaxTotal()` Gets the default value for `GenericKeyedObjectPoolConfig.getMaxTotalPerKey()` for each per user pool.
`long`	`getDefaultMaxWaitMillis()` Gets the default value for `BaseObjectPoolConfig.getMaxWaitMillis()` for each per user pool.
`long`	`getDefaultMinEvictableIdleTimeMillis()` Gets the default value for `BaseObjectPoolConfig.getMinEvictableIdleTimeMillis()` for each per user pool.
`int`	`getDefaultMinIdle()` Gets the default value for `GenericKeyedObjectPoolConfig.getMinIdlePerKey()` for each per user pool.
`int`	`getDefaultNumTestsPerEvictionRun()` Gets the default value for `BaseObjectPoolConfig.getNumTestsPerEvictionRun()` for each per user pool.
`long`	`getDefaultSoftMinEvictableIdleTimeMillis()` Gets the default value for `GenericObjectPool#getSoftMinEvictableIdleTimeMillis()` for each per user pool.
`boolean`	`getDefaultTestOnBorrow()` Gets the default value for `GenericObjectPool#getTestOnBorrow()` for each per user pool.
`boolean`	`getDefaultTestOnCreate()` Gets the default value for `GenericObjectPool#getTestOnCreate()` for each per user pool.
`boolean`	`getDefaultTestOnReturn()` Gets the default value for `GenericObjectPool#getTestOnReturn()` for each per user pool.
`boolean`	`getDefaultTestWhileIdle()` Gets the default value for `GenericObjectPool#getTestWhileIdle()` for each per user pool.
`long`	`getDefaultTimeBetweenEvictionRunsMillis()` Gets the default value for `GenericObjectPool#getTimeBetweenEvictionRunsMillis ()` for each per user pool.
`int`	`getDefaultTransactionIsolation()` Get the value of defaultTransactionIsolation, which defines the state of connections handed out from this pool.
`String`	`getDescription()` Get the description.
`protected String`	`getInstanceKey()`
`String`	`getJndiEnvironment(String key)` Get the value of jndiEnvironment which is used when instantiating a jndi InitialContext.
`int`	`getLoginTimeout()` Get the value of loginTimeout.
`PrintWriter`	`getLogWriter()` Get the value of logWriter.
`long`	`getMaxConnLifetimeMillis()` Returns the maximum permitted lifetime of a connection in milliseconds.
`Logger`	`getParentLogger()`
`protected abstract org.apache.tomcat.dbcp.dbcp2.datasources.PooledConnectionAndInfo`	`getPooledConnectionAndInfo(String username, String password)`
`String`	`getValidationQuery()` The SQL query that will be used to validate connections from this pool before returning them to the caller.
`int`	`getValidationQueryTimeout()` Returns the timeout in seconds before the validation query fails.
`Boolean`	`isDefaultAutoCommit()` Get the value of defaultAutoCommit, which defines the state of connections handed out from this pool.
`Boolean`	`isDefaultReadOnly()` Get the value of defaultReadOnly, which defines the state of connections handed out from this pool.
`boolean`	`isRollbackAfterValidation()` Whether a rollback will be issued after executing the SQL query that will be used to validate connections from this pool before returning them to the caller.
`boolean`	`isWrapperFor(Class<?> iface)`
`void`	`setConnectionPoolDataSource(ConnectionPoolDataSource v)` Set the backend ConnectionPoolDataSource.
`void`	`setDataSourceName(String v)` Set the name of the ConnectionPoolDataSource which backs this pool.
`void`	`setDefaultAutoCommit(Boolean v)` Set the value of defaultAutoCommit, which defines the state of connections handed out from this pool.
`void`	`setDefaultBlockWhenExhausted(boolean blockWhenExhausted)` Sets the default value for `BaseObjectPoolConfig.getBlockWhenExhausted()` for each per user pool.
`void`	`setDefaultEvictionPolicyClassName(String evictionPolicyClassName)` Sets the default value for `BaseObjectPoolConfig.getEvictionPolicyClassName()` for each per user pool.
`void`	`setDefaultLifo(boolean lifo)` Sets the default value for `BaseObjectPoolConfig.getLifo()` for each per user pool.
`void`	`setDefaultMaxIdle(int maxIdle)` Sets the default value for `GenericKeyedObjectPoolConfig.getMaxIdlePerKey()` for each per user pool.
`void`	`setDefaultMaxTotal(int maxTotal)` Sets the default value for `GenericKeyedObjectPoolConfig.getMaxTotalPerKey()` for each per user pool.
`void`	`setDefaultMaxWaitMillis(long maxWaitMillis)` Sets the default value for `BaseObjectPoolConfig.getMaxWaitMillis()` for each per user pool.
`void`	`setDefaultMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis)` Sets the default value for `BaseObjectPoolConfig.getMinEvictableIdleTimeMillis()` for each per user pool.
`void`	`setDefaultMinIdle(int minIdle)` Sets the default value for `GenericKeyedObjectPoolConfig.getMinIdlePerKey()` for each per user pool.
`void`	`setDefaultNumTestsPerEvictionRun(int numTestsPerEvictionRun)` Sets the default value for `BaseObjectPoolConfig.getNumTestsPerEvictionRun()` for each per user pool.
`void`	`setDefaultReadOnly(Boolean v)` Set the value of defaultReadOnly, which defines the state of connections handed out from this pool.
`void`	`setDefaultSoftMinEvictableIdleTimeMillis(long softMinEvictableIdleTimeMillis)` Sets the default value for `GenericObjectPool#getSoftMinEvictableIdleTimeMillis()` for each per user pool.
`void`	`setDefaultTestOnBorrow(boolean testOnBorrow)` Sets the default value for `GenericObjectPool#getTestOnBorrow()` for each per user pool.
`void`	`setDefaultTestOnCreate(boolean testOnCreate)` Sets the default value for `GenericObjectPool#getTestOnCreate()` for each per user pool.
`void`	`setDefaultTestOnReturn(boolean testOnReturn)` Sets the default value for `GenericObjectPool#getTestOnReturn()` for each per user pool.
`void`	`setDefaultTestWhileIdle(boolean testWhileIdle)` Sets the default value for `GenericObjectPool#getTestWhileIdle()` for each per user pool.
`void`	`setDefaultTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis)` Sets the default value for `GenericObjectPool#getTimeBetweenEvictionRunsMillis ()` for each per user pool.
`void`	`setDefaultTransactionIsolation(int v)` Set the value of defaultTransactionIsolation, which defines the state of connections handed out from this pool.
`void`	`setDescription(String v)` Set the description.
`void`	`setJndiEnvironment(String key, String value)` Sets the value of the given JNDI environment property to be used when instantiating a JNDI InitialContext.
`void`	`setLoginTimeout(int v)` Set the value of loginTimeout.
`void`	`setLogWriter(PrintWriter v)` Set the value of logWriter.
`void`	`setMaxConnLifetimeMillis(long maxConnLifetimeMillis)` Sets the maximum permitted lifetime of a connection in milliseconds.
`void`	`setRollbackAfterValidation(boolean rollbackAfterValidation)` Whether a rollback will be issued after executing the SQL query that will be used to validate connections from this pool before returning them to the caller.
`protected abstract void`	`setupDefaults(Connection con, String username)`
`void`	`setValidationQuery(String validationQuery)` The SQL query that will be used to validate connections from this pool before returning them to the caller.
`void`	`setValidationQueryTimeout(int validationQueryTimeout)` Sets the timeout in seconds before the validation query fails.
`protected ConnectionPoolDataSource`	`testCPDS(String username, String password)`
`<T> T`	`unwrap(Class<T> iface)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.naming.Referenceable
getReference

- Field Detail
  - UNKNOWN_TRANSACTIONISOLATION
```
protected static final int UNKNOWN_TRANSACTIONISOLATION
```
    Internal constant to indicate the level is not set.
    
    See Also:
    Constant Field Values
- Constructor Detail
  - InstanceKeyDataSource
```
public InstanceKeyDataSource()
```
    Default no-arg constructor for Serialization
- Method Detail
  - assertInitializationAllowed
```
protected void assertInitializationAllowed()
                                    throws IllegalStateException
```
    Throws an IllegalStateException, if a PooledConnection has already been requested.
    
    Throws:
    
    IllegalStateException
  - close
```
public abstract void close()
                    throws Exception
```
    Close the connection pool being maintained by this datasource.
    
    Throws:
    
    Exception
  - getConnectionManager
```
protected abstract org.apache.tomcat.dbcp.dbcp2.datasources.PooledConnectionManager getConnectionManager(org.apache.tomcat.dbcp.dbcp2.datasources.UserPassKey upkey)
```
  - isWrapperFor
```
public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
```
    Specified by:
    
    isWrapperFor in interface Wrapper
    
    Throws:
    
    SQLException
  - unwrap
```
public <T> T unwrap(Class<T> iface)
         throws SQLException
```
    Specified by:
    
    unwrap in interface Wrapper
    
    Throws:
    
    SQLException
  - getParentLogger
```
public Logger getParentLogger()
                       throws SQLFeatureNotSupportedException
```
    Specified by:
    
    getParentLogger in interface CommonDataSource
    
    Throws:
    
    SQLFeatureNotSupportedException
  - getDefaultBlockWhenExhausted
```
public boolean getDefaultBlockWhenExhausted()
```
    Gets the default value for BaseObjectPoolConfig.getBlockWhenExhausted() for each per user pool.
  - setDefaultBlockWhenExhausted
```
public void setDefaultBlockWhenExhausted(boolean blockWhenExhausted)
```
    Sets the default value for BaseObjectPoolConfig.getBlockWhenExhausted() for each per user pool.
  - getDefaultEvictionPolicyClassName
```
public String getDefaultEvictionPolicyClassName()
```
    Gets the default value for BaseObjectPoolConfig.getEvictionPolicyClassName() for each per user pool.
  - setDefaultEvictionPolicyClassName
```
public void setDefaultEvictionPolicyClassName(String evictionPolicyClassName)
```
    Sets the default value for BaseObjectPoolConfig.getEvictionPolicyClassName() for each per user pool.
  - getDefaultLifo
```
public boolean getDefaultLifo()
```
    Gets the default value for BaseObjectPoolConfig.getLifo() for each per user pool.
  - setDefaultLifo
```
public void setDefaultLifo(boolean lifo)
```
    Sets the default value for BaseObjectPoolConfig.getLifo() for each per user pool.
  - getDefaultMaxIdle
```
public int getDefaultMaxIdle()
```
    Gets the default value for GenericKeyedObjectPoolConfig.getMaxIdlePerKey() for each per user pool.
  - setDefaultMaxIdle
```
public void setDefaultMaxIdle(int maxIdle)
```
    Sets the default value for GenericKeyedObjectPoolConfig.getMaxIdlePerKey() for each per user pool.
  - getDefaultMaxTotal
```
public int getDefaultMaxTotal()
```
    Gets the default value for GenericKeyedObjectPoolConfig.getMaxTotalPerKey() for each per user pool.
  - setDefaultMaxTotal
```
public void setDefaultMaxTotal(int maxTotal)
```
    Sets the default value for GenericKeyedObjectPoolConfig.getMaxTotalPerKey() for each per user pool.
  - getDefaultMaxWaitMillis
```
public long getDefaultMaxWaitMillis()
```
    Gets the default value for BaseObjectPoolConfig.getMaxWaitMillis() for each per user pool.
  - setDefaultMaxWaitMillis
```
public void setDefaultMaxWaitMillis(long maxWaitMillis)
```
    Sets the default value for BaseObjectPoolConfig.getMaxWaitMillis() for each per user pool.
  - getDefaultMinEvictableIdleTimeMillis
```
public long getDefaultMinEvictableIdleTimeMillis()
```
    Gets the default value for BaseObjectPoolConfig.getMinEvictableIdleTimeMillis() for each per user pool.
  - setDefaultMinEvictableIdleTimeMillis
```
public void setDefaultMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis)
```
    Sets the default value for BaseObjectPoolConfig.getMinEvictableIdleTimeMillis() for each per user pool.
  - getDefaultMinIdle
```
public int getDefaultMinIdle()
```
    Gets the default value for GenericKeyedObjectPoolConfig.getMinIdlePerKey() for each per user pool.
  - setDefaultMinIdle
```
public void setDefaultMinIdle(int minIdle)
```
    Sets the default value for GenericKeyedObjectPoolConfig.getMinIdlePerKey() for each per user pool.
  - getDefaultNumTestsPerEvictionRun
```
public int getDefaultNumTestsPerEvictionRun()
```
    Gets the default value for BaseObjectPoolConfig.getNumTestsPerEvictionRun() for each per user pool.
  - setDefaultNumTestsPerEvictionRun
```
public void setDefaultNumTestsPerEvictionRun(int numTestsPerEvictionRun)
```
    Sets the default value for BaseObjectPoolConfig.getNumTestsPerEvictionRun() for each per user pool.
  - getDefaultSoftMinEvictableIdleTimeMillis
```
public long getDefaultSoftMinEvictableIdleTimeMillis()
```
    Gets the default value for GenericObjectPool#getSoftMinEvictableIdleTimeMillis() for each per user pool.
  - setDefaultSoftMinEvictableIdleTimeMillis
```
public void setDefaultSoftMinEvictableIdleTimeMillis(long softMinEvictableIdleTimeMillis)
```
    Sets the default value for GenericObjectPool#getSoftMinEvictableIdleTimeMillis() for each per user pool.
  - getDefaultTestOnCreate
```
public boolean getDefaultTestOnCreate()
```
    Gets the default value for GenericObjectPool#getTestOnCreate() for each per user pool.
  - setDefaultTestOnCreate
```
public void setDefaultTestOnCreate(boolean testOnCreate)
```
    Sets the default value for GenericObjectPool#getTestOnCreate() for each per user pool.
  - getDefaultTestOnBorrow
```
public boolean getDefaultTestOnBorrow()
```
    Gets the default value for GenericObjectPool#getTestOnBorrow() for each per user pool.
  - setDefaultTestOnBorrow
```
public void setDefaultTestOnBorrow(boolean testOnBorrow)
```
    Sets the default value for GenericObjectPool#getTestOnBorrow() for each per user pool.
  - getDefaultTestOnReturn
```
public boolean getDefaultTestOnReturn()
```
    Gets the default value for GenericObjectPool#getTestOnReturn() for each per user pool.
  - setDefaultTestOnReturn
```
public void setDefaultTestOnReturn(boolean testOnReturn)
```
    Sets the default value for GenericObjectPool#getTestOnReturn() for each per user pool.
  - getDefaultTestWhileIdle
```
public boolean getDefaultTestWhileIdle()
```
    Gets the default value for GenericObjectPool#getTestWhileIdle() for each per user pool.
  - setDefaultTestWhileIdle
```
public void setDefaultTestWhileIdle(boolean testWhileIdle)
```
    Sets the default value for GenericObjectPool#getTestWhileIdle() for each per user pool.
  - getDefaultTimeBetweenEvictionRunsMillis
```
public long getDefaultTimeBetweenEvictionRunsMillis()
```
    Gets the default value for GenericObjectPool#getTimeBetweenEvictionRunsMillis () for each per user pool.
  - setDefaultTimeBetweenEvictionRunsMillis
```
public void setDefaultTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis)
```
    Sets the default value for GenericObjectPool#getTimeBetweenEvictionRunsMillis () for each per user pool.
  - getConnectionPoolDataSource
```
public ConnectionPoolDataSource getConnectionPoolDataSource()
```
    Get the value of connectionPoolDataSource. This method will return null, if the backing datasource is being accessed via jndi.
    
    Returns:
    value of connectionPoolDataSource.
  - setConnectionPoolDataSource
```
public void setConnectionPoolDataSource(ConnectionPoolDataSource v)
```
    Set the backend ConnectionPoolDataSource. This property should not be set if using jndi to access the datasource.
    
    Parameters:
    v - Value to assign to connectionPoolDataSource.
  - getDataSourceName
```
public String getDataSourceName()
```
    Get the name of the ConnectionPoolDataSource which backs this pool. This name is used to look up the datasource from a jndi service provider.
    
    Returns:
    value of dataSourceName.
  - setDataSourceName
```
public void setDataSourceName(String v)
```
    Set the name of the ConnectionPoolDataSource which backs this pool. This name is used to look up the datasource from a jndi service provider.
    
    Parameters:
    v - Value to assign to dataSourceName.
  - isDefaultAutoCommit
```
public Boolean isDefaultAutoCommit()
```
    Get the value of defaultAutoCommit, which defines the state of connections handed out from this pool. The value can be changed on the Connection using Connection.setAutoCommit(boolean). The default is null which will use the default value for the drive.
    
    Returns:
    value of defaultAutoCommit.
  - setDefaultAutoCommit
```
public void setDefaultAutoCommit(Boolean v)
```
    Set the value of defaultAutoCommit, which defines the state of connections handed out from this pool. The value can be changed on the Connection using Connection.setAutoCommit(boolean). The default is null which will use the default value for the drive.
    
    Parameters:
    v - Value to assign to defaultAutoCommit.
  - isDefaultReadOnly
```
public Boolean isDefaultReadOnly()
```
    Get the value of defaultReadOnly, which defines the state of connections handed out from this pool. The value can be changed on the Connection using Connection.setReadOnly(boolean). The default is null which will use the default value for the drive.
    
    Returns:
    value of defaultReadOnly.
  - setDefaultReadOnly
```
public void setDefaultReadOnly(Boolean v)
```
    Set the value of defaultReadOnly, which defines the state of connections handed out from this pool. The value can be changed on the Connection using Connection.setReadOnly(boolean). The default is null which will use the default value for the drive.
    
    Parameters:
    v - Value to assign to defaultReadOnly.
  - getDefaultTransactionIsolation
```
public int getDefaultTransactionIsolation()
```
    Get the value of defaultTransactionIsolation, which defines the state of connections handed out from this pool. The value can be changed on the Connection using Connection.setTransactionIsolation(int). If this method returns -1, the default is JDBC driver dependent.
    
    Returns:
    value of defaultTransactionIsolation.
  - setDefaultTransactionIsolation
```
public void setDefaultTransactionIsolation(int v)
```
    Set the value of defaultTransactionIsolation, which defines the state of connections handed out from this pool. The value can be changed on the Connection using Connection.setTransactionIsolation(int). The default is JDBC driver dependent.
    
    Parameters:
    v - Value to assign to defaultTransactionIsolation
  - getDescription
```
public String getDescription()
```
    Get the description. This property is defined by jdbc as for use with GUI (or other) tools that might deploy the datasource. It serves no internal purpose.
    
    Returns:
    value of description.
  - setDescription
```
public void setDescription(String v)
```
    Set the description. This property is defined by jdbc as for use with GUI (or other) tools that might deploy the datasource. It serves no internal purpose.
    
    Parameters:
    v - Value to assign to description.
  - getInstanceKey
```
protected String getInstanceKey()
```
  - getJndiEnvironment
```
public String getJndiEnvironment(String key)
```
    Get the value of jndiEnvironment which is used when instantiating a jndi InitialContext. This InitialContext is used to locate the backend ConnectionPoolDataSource.
    
    Returns:
    value of jndiEnvironment.
  - setJndiEnvironment
```
public void setJndiEnvironment(String key,
                      String value)
```
    Sets the value of the given JNDI environment property to be used when instantiating a JNDI InitialContext. This InitialContext is used to locate the backend ConnectionPoolDataSource.
    
    Parameters:
    key - the JNDI environment property to set.
    value - the value assigned to specified JNDI environment property.
  - getLoginTimeout
```
public int getLoginTimeout()
```
    Get the value of loginTimeout.
    
    Specified by:
    
    getLoginTimeout in interface CommonDataSource
    
    Returns:
    value of loginTimeout.
  - setLoginTimeout
```
public void setLoginTimeout(int v)
```
    Set the value of loginTimeout.
    
    Specified by:
    
    setLoginTimeout in interface CommonDataSource
    
    Parameters:
    v - Value to assign to loginTimeout.
  - getLogWriter
```
public PrintWriter getLogWriter()
```
    Get the value of logWriter.
    
    Specified by:
    
    getLogWriter in interface CommonDataSource
    
    Returns:
    value of logWriter.
  - setLogWriter
```
public void setLogWriter(PrintWriter v)
```
    Set the value of logWriter.
    
    Specified by:
    
    setLogWriter in interface CommonDataSource
    
    Parameters:
    v - Value to assign to logWriter.
  - getValidationQuery
```
public String getValidationQuery()
```
    The SQL query that will be used to validate connections from this pool before returning them to the caller. If specified, this query MUST be an SQL SELECT statement that returns at least one row. If not specified, Connection.isValid(int) will be used to validate connections.
  - setValidationQuery
```
public void setValidationQuery(String validationQuery)
```
    The SQL query that will be used to validate connections from this pool before returning them to the caller. If specified, this query MUST be an SQL SELECT statement that returns at least one row. If not specified, connections will be validated using Connection.isValid(int).
  - getValidationQueryTimeout
```
public int getValidationQueryTimeout()
```
    Returns the timeout in seconds before the validation query fails.
  - setValidationQueryTimeout
```
public void setValidationQueryTimeout(int validationQueryTimeout)
```
    Sets the timeout in seconds before the validation query fails.
    
    Parameters:
    validationQueryTimeout - The new timeout in seconds
  - isRollbackAfterValidation
```
public boolean isRollbackAfterValidation()
```
    Whether a rollback will be issued after executing the SQL query that will be used to validate connections from this pool before returning them to the caller.
    
    Returns:
    true if a rollback will be issued after executing the validation query
  - setRollbackAfterValidation
```
public void setRollbackAfterValidation(boolean rollbackAfterValidation)
```
    Whether a rollback will be issued after executing the SQL query that will be used to validate connections from this pool before returning them to the caller. Default behavior is NOT to issue a rollback. The setting will only have an effect if a validation query is set
    
    Parameters:
    rollbackAfterValidation - new property value
  - getMaxConnLifetimeMillis
```
public long getMaxConnLifetimeMillis()
```
    Returns the maximum permitted lifetime of a connection in milliseconds. A value of zero or less indicates an infinite lifetime.
  - setMaxConnLifetimeMillis
```
public void setMaxConnLifetimeMillis(long maxConnLifetimeMillis)
```
    Sets the maximum permitted lifetime of a connection in milliseconds. A value of zero or less indicates an infinite lifetime.
    
    Note: this method currently has no effect once the pool has been initialized. The pool is initialized the first time one of the following methods is invoked: getConnection, setLogwriter, setLoginTimeout, getLoginTimeout, getLogWriter.
  - getConnection
```
public Connection getConnection()
                         throws SQLException
```
    Attempt to establish a database connection.
    
    Specified by:
    
    getConnection in interface DataSource
    
    Throws:
    
    SQLException
  - getConnection
```
public Connection getConnection(String username,
                       String password)
                         throws SQLException
```
    Attempt to retrieve a database connection using getPooledConnectionAndInfo(String, String) with the provided username and password. The password on the PooledConnectionAndInfo instance returned by getPooledConnectionAndInfo is compared to the password parameter. If the comparison fails, a database connection using the supplied username and password is attempted. If the connection attempt fails, an SQLException is thrown, indicating that the given password did not match the password used to create the pooled connection. If the connection attempt succeeds, this means that the database password has been changed. In this case, the PooledConnectionAndInfo instance retrieved with the old password is destroyed and the getPooledConnectionAndInfo is repeatedly invoked until a PooledConnectionAndInfo instance with the new password is returned.
    
    Specified by:
    
    getConnection in interface DataSource
    
    Throws:
    
    SQLException
  - getPooledConnectionAndInfo
```
protected abstract org.apache.tomcat.dbcp.dbcp2.datasources.PooledConnectionAndInfo getPooledConnectionAndInfo(String username,
                                                                                          String password)
                                                                                                        throws SQLException
```
    Throws:
    
    SQLException
  - setupDefaults
```
protected abstract void setupDefaults(Connection con,
                 String username)
                               throws SQLException
```
    Throws:
    
    SQLException
  - testCPDS
```
protected ConnectionPoolDataSource testCPDS(String username,
                                String password)
                                     throws NamingException,
                                            SQLException
```
    Throws:
    
    NamingException
    
    SQLException

Class InstanceKeyDataSource

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface javax.naming.Referenceable

Field Detail

UNKNOWN_TRANSACTIONISOLATION

Constructor Detail

InstanceKeyDataSource

Method Detail

assertInitializationAllowed

close

getConnectionManager

isWrapperFor

unwrap

getParentLogger

getDefaultBlockWhenExhausted

setDefaultBlockWhenExhausted

getDefaultEvictionPolicyClassName

setDefaultEvictionPolicyClassName

getDefaultLifo

setDefaultLifo

getDefaultMaxIdle

setDefaultMaxIdle

getDefaultMaxTotal

setDefaultMaxTotal

getDefaultMaxWaitMillis

setDefaultMaxWaitMillis

getDefaultMinEvictableIdleTimeMillis

setDefaultMinEvictableIdleTimeMillis

getDefaultMinIdle

setDefaultMinIdle

getDefaultNumTestsPerEvictionRun

setDefaultNumTestsPerEvictionRun

getDefaultSoftMinEvictableIdleTimeMillis

setDefaultSoftMinEvictableIdleTimeMillis

getDefaultTestOnCreate

setDefaultTestOnCreate

getDefaultTestOnBorrow

setDefaultTestOnBorrow

getDefaultTestOnReturn

setDefaultTestOnReturn

getDefaultTestWhileIdle

setDefaultTestWhileIdle

getDefaultTimeBetweenEvictionRunsMillis

setDefaultTimeBetweenEvictionRunsMillis

getConnectionPoolDataSource

setConnectionPoolDataSource

getDataSourceName

setDataSourceName

isDefaultAutoCommit

setDefaultAutoCommit

isDefaultReadOnly

setDefaultReadOnly

getDefaultTransactionIsolation

setDefaultTransactionIsolation

getDescription

setDescription

getInstanceKey

getJndiEnvironment

setJndiEnvironment

getLoginTimeout

setLoginTimeout

getLogWriter

setLogWriter

getValidationQuery

setValidationQuery

getValidationQueryTimeout

setValidationQueryTimeout

isRollbackAfterValidation

setRollbackAfterValidation

getMaxConnLifetimeMillis

setMaxConnLifetimeMillis

getConnection

getConnection

getPooledConnectionAndInfo

setupDefaults

testCPDS