org.postgresql.ds

Class PGSimpleDataSource

java.lang.Object

org.postgresql.ds.common.BaseDataSource

org.postgresql.ds.PGSimpleDataSource

All Implemented Interfaces:

Serializable, Wrapper, Referenceable, CommonDataSource, DataSource

Direct Known Subclasses:

Jdbc3SimpleDataSource, SimpleDataSource

public class PGSimpleDataSource
extends BaseDataSource
implements DataSource, Serializable

Simple DataSource which does not perform connection pooling. In order to use the DataSource, you must set the property databaseName. The settings for serverName, portNumber, user, and password are optional. Note: these properties are declared in the superclass.

Author:

Aaron Mulder ([email protected])

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PGSimpleDataSource()

Method Summary

Modifier and Type	Method and Description
String	getDescription() Gets a description of this DataSource.
boolean	isWrapperFor(Class<?> iface) Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
<T> T	unwrap(Class<T> iface) Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

Methods inherited from class org.postgresql.ds.common.BaseDataSource

createReference, getAllowEncodingChanges, getApplicationName, getAssumeMinServerVersion, getAutosave, getBinaryTransfer, getBinaryTransferDisable, getBinaryTransferEnable, getCancelSignalTimeout, getConnection, getConnection, getConnectTimeout, getCurrentSchema, getDatabaseMetadataCacheFields, getDatabaseMetadataCacheFieldsMiB, getDatabaseName, getDefaultRowFetchSize, getDisableColumnSanitiser, getGssLib, getHostRecheckSeconds, getJaasApplicationName, getJaasLogin, getKerberosServerName, getLoadBalanceHosts, getLoggerFile, getLoggerLevel, getLoginTimeout, getLogUnclosedConnections, getLogWriter, getParentLogger, getPassword, getPortNumber, getPreferQueryMode, getPreparedStatementCacheQueries, getPreparedStatementCacheSizeMiB, getPrepareThreshold, getProperty, getProperty, getProtocolVersion, getReadOnly, getReceiveBufferSize, getReference, getReplication, getReWriteBatchedInserts, getSendBufferSize, getServerName, getSocketFactory, getSocketFactoryArg, getSocketTimeout, getSsl, getSslCert, getSslfactory, getSslFactoryArg, getSslHostnameVerifier, getSslKey, getSslMode, getSslPassword, getSslPasswordCallback, getSslRootCert, getSspiServiceClass, getStringType, getTargetServerType, getTcpKeepAlive, getUnknownLength, getUrl, getURL, getUser, getUseSpNego, initializeFrom, isColumnSanitiserDisabled, readBaseObject, setAllowEncodingChanges, setApplicationName, setAssumeMinServerVersion, setAutosave, setBinaryTransfer, setBinaryTransferDisable, setBinaryTransferEnable, setCancelSignalTimeout, setConnectTimeout, setCurrentSchema, setDatabaseMetadataCacheFields, setDatabaseMetadataCacheFieldsMiB, setDatabaseName, setDefaultRowFetchSize, setDisableColumnSanitiser, setFromReference, setGssLib, setHostRecheckSeconds, setJaasApplicationName, setJaasLogin, setKerberosServerName, setLoadBalanceHosts, setLoggerFile, setLoggerLevel, setLoginTimeout, setLogUnclosedConnections, setLogWriter, setPassword, setPortNumber, setPreferQueryMode, setPreparedStatementCacheQueries, setPreparedStatementCacheSizeMiB, setPrepareThreshold, setProperty, setProperty, setProtocolVersion, setReadOnly, setReceiveBufferSize, setReplication, setReWriteBatchedInserts, setSendBufferSize, setServerName, setSocketFactory, setSocketFactoryArg, setSocketTimeout, setSsl, setSslCert, setSslfactory, setSslFactoryArg, setSslHostnameVerifier, setSslKey, setSslMode, setSslPassword, setSslPasswordCallback, setSslRootCert, setSspiServiceClass, setStringType, setTargetServerType, setTcpKeepAlive, setUnknownLength, setUrl, setURL, setUser, setUseSpNego, writeBaseObject

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.sql.DataSource

getConnection, getConnection

Methods inherited from interface javax.sql.CommonDataSource

getLoginTimeout, getLogWriter, getParentLogger, setLoginTimeout, setLogWriter

Constructor Detail

PGSimpleDataSource

public PGSimpleDataSource()

Method Detail

getDescription

public String getDescription()

Gets a description of this DataSource.

Specified by:

getDescription in class BaseDataSource

Returns:

description of this DataSource-ish thing

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException

Description copied from interface: java.sql.Wrapper

Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does. Returns false otherwise. If this implements the interface then return true, else if this is a wrapper then return the result of recursively calling isWrapperFor on the wrapped object. If this does not implement the interface and is not a wrapper, return false. This method should be implemented as a low-cost operation compared to unwrap so that callers can use this method to avoid expensive unwrap calls that may fail. If this method returns true then calling unwrap with the same argument should succeed.

Specified by:

isWrapperFor in interface Wrapper

Parameters:

iface - a Class defining an interface.

Returns:

true if this implements the interface or directly or indirectly wraps an object that does.

Throws:

SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.

unwrap

public <T> T unwrap(Class<T> iface)
             throws SQLException

Description copied from interface: java.sql.Wrapper

Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy. If the receiver implements the interface then the result is the receiver or a proxy for the receiver. If the receiver is a wrapper and the wrapped object implements the interface then the result is the wrapped object or a proxy for the wrapped object. Otherwise return the the result of calling unwrap recursively on the wrapped object or a proxy for that result. If the receiver is not a wrapper and does not implement the interface, then an SQLException is thrown.

Specified by:

unwrap in interface Wrapper

Type Parameters:

T - the type of the class modeled by this Class object

Parameters:

iface - A Class defining an interface that the result must implement.

Returns:

an object that implements the interface. May be a proxy for the actual implementing object.

Throws:

SQLException - If no object found that implements the interface