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## org.apache.derby.jdbc
Class ClientBaseDataSource

    java.lang.Object
      org.apache.derby.jdbc.ClientBaseDataSource

All Implemented Interfaces:
  java.io.Serializable, javax.naming.Referenceable

Direct Known Subclasses:
  ClientDataSource

    public abstract class ClientBaseDataSource

extends java.lang.Object
implements java.io.Serializable, javax.naming.Referenceable

Base class for client-side DataSource implementations.

See Also:
  Serialized Form

Field Summary
`static short` | `CLEAR_TEXT_PASSWORD_SECURITY`
`protected java.lang.String` | `connectionAttributes`
`static short` | `ENCRYPTED_PASSWORD_SECURITY`
`static short` | `ENCRYPTED_USER_AND_PASSWORD_SECURITY`
`static int` | `propertyDefault_portNumber`
`static boolean` | `propertyDefault_retrieveMessageText`
`static short` | `propertyDefault_securityMechanism`
`static java.lang.String` | `propertyDefault_serverName`
`static boolean` | `propertyDefault_traceFileAppend`
`static int` | `propertyDefault_traceLevel`
`static java.lang.String` | `propertyDefault_user`
`protected short` | `securityMechanism`
`static int` | `SSL_BASIC` The constant indicating that SSL encryption will be used.
`static int` | `SSL_OFF` The constant indicating that SSL encryption won't be used.
`static int` | `SSL_PEER_AUTHENTICATION` The constant indicating that SSL encryption with peer authentication will be used.
`static short` | `STRONG_PASSWORD_SUBSTITUTE_SECURITY`
`static int` | `TRACE_ALL`
`static int` | `TRACE_CONNECTION_CALLS`
`static int` | `TRACE_CONNECTS`
`static int` | `TRACE_DIAGNOSTICS`
`static int` | `TRACE_DRIVER_CONFIGURATION`
`static int` | `TRACE_NONE`
`static int` | `TRACE_PARAMETER_META_DATA`
`static int` | `TRACE_PROTOCOL_FLOWS`
`static int` | `TRACE_RESULT_SET_CALLS`
`static int` | `TRACE_RESULT_SET_META_DATA`
`static int` | `TRACE_STATEMENT_CALLS`
`static int` | `TRACE_XA_CALLS`
`protected int` | `traceLevel`
`static short` | `USER_ONLY_SECURITY` The source security mechanism to use when connecting to this data source.

Method Summary
`static org.apache.derby.client.am.LogWriter` | `computeDncLogWriter(org.apache.derby.client.am.Connection connection, java.io.PrintWriter logWriter, java.lang.String traceDirectory, java.lang.String traceFile, boolean traceFileAppend, java.lang.String logWriterInUseSuffix, int traceFileSuffixIndex, int traceLevel)`
`static int` | `getClientSSLMode(java.util.Properties properties)` Returns the SSL mode specified by the property object.
`java.lang.String` | `getConnectionAttributes()`
`java.lang.String` | `getCreateDatabase()`
`java.lang.String` | `getDatabaseName()`
`java.lang.String` | `getDataSourceName()`
`java.lang.String` | `getDescription()`
`int` | `getLoginTimeout()`
`java.io.PrintWriter` | `getLogWriter()`
`java.lang.String` | `getPassword()`
`static java.lang.String` | `getPassword(java.util.Properties properties)`
`int` | `getPortNumber()`
`javax.naming.Reference` | `getReference()`
`boolean` | `getRetrieveMessageText()`
`static boolean` | `getRetrieveMessageText(java.util.Properties properties)`
`short` | `getSecurityMechanism()` Return the security mechanism.
`static short` | `getSecurityMechanism(java.util.Properties properties)` Return security mechanism if it is set, else upgrade the security mechanism if possible and return the upgraded security mechanism
`short` | `getSecurityMechanism(java.lang.String password)` Return the security mechanism for this datasource object.
`java.lang.String` | `getServerName()`
`java.lang.String` | `getShutdownDatabase()`
`java.lang.String` | `getSsl()` Returns the SSL encryption mode specified for the data source.
`static int` | `getSSLModeFromString(java.lang.String s)` Parses the string and returns the corresponding constant for the SSL mode denoted.
`java.lang.String` | `getTraceDirectory()`
`static java.lang.String` | `getTraceDirectory(java.util.Properties properties)` Check if derby.client.traceDirectory is provided as a JVM property.
`java.lang.String` | `getTraceFile()`
`static java.lang.String` | `getTraceFile(java.util.Properties properties)`
`boolean` | `getTraceFileAppend()`
`static boolean` | `getTraceFileAppend(java.util.Properties properties)`
`int` | `getTraceLevel()`
`static int` | `getTraceLevel(java.util.Properties properties)` Check if derby.client.traceLevel is provided as a JVM property.
`static short` | `getUpgradedSecurityMechanism(java.lang.String password)` This method has logic to upgrade security mechanism to a better (more secure) one if it is possible.
`java.lang.String` | `getUser()`
`static java.lang.String` | `getUser(java.util.Properties properties)`
`int` | `maxStatementsToPool()` Returns the maximum number of JDBC prepared statements a connection is allowed to cache.
`void` | `setConnectionAttributes(java.lang.String prop)` Set this property to pass in more Derby specific connection URL attributes.
`void` | `setCreateDatabase(java.lang.String create)` Set this property to create a new database.
`void` | `setDatabaseName(java.lang.String databaseName)`
`void` | `setDataSourceName(java.lang.String dataSourceName)`
`void` | `setDescription(java.lang.String description)`
`void` | `setLoginTimeout(int seconds)`
`void` | `setLogWriter(java.io.PrintWriter logWriter)`
`void` | `setPassword(java.lang.String password)`
`void` | `setPortNumber(int portNumber)`
`void` | `setRetrieveMessageText(boolean retrieveMessageText)`
`void` | `setSecurityMechanism(short securityMechanism)` Sets the security mechanism.
`void` | `setServerName(java.lang.String serverName)`
`void` | `setShutdownDatabase(java.lang.String shutdown)` Set this property if one wishes to shutdown the database identified by databaseName.
`void` | `setSsl(java.lang.String mode)` Specifices the SSL encryption mode to use.
`void` | `setTraceDirectory(java.lang.String traceDirectory)`
`void` | `setTraceFile(java.lang.String traceFile)`
`void` | `setTraceFileAppend(boolean traceFileAppend)`
`void` | `setTraceLevel(int traceLevel)`
`void` | `setUser(java.lang.String user)`

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

Field Detail

### propertyDefault_portNumber

    public static final int propertyDefault_portNumber

See Also:
  Constant Field Values

### propertyDefault_serverName

    public static final java.lang.String propertyDefault_serverName

See Also:
  Constant Field Values

### SSL_OFF

    public static final int SSL_OFF

  The constant indicating that SSL encryption won't be used.

  See Also:
    Constant Field Values

### SSL_BASIC

    public static final int SSL_BASIC

  The constant indicating that SSL encryption will be used.

  See Also:
    Constant Field Values

### SSL_PEER_AUTHENTICATION

    public static final int SSL_PEER_AUTHENTICATION

  The constant indicating that SSL encryption with peer authentication will be used.

  See Also:
    Constant Field Values

### propertyDefault_user

    public static final java.lang.String propertyDefault_user

See Also:
  Constant Field Values

### securityMechanism

    protected short securityMechanism

### propertyDefault_securityMechanism

    public static final short propertyDefault_securityMechanism

See Also:
  Constant Field Values

### propertyDefault_retrieveMessageText

    public static final boolean propertyDefault_retrieveMessageText

See Also:
  Constant Field Values

### propertyDefault_traceFileAppend

    public static final boolean propertyDefault_traceFileAppend

See Also:
  Constant Field Values

### USER_ONLY_SECURITY

    public static final short USER_ONLY_SECURITY

  The source security mechanism to use when connecting to this data source.

  Security mechanism options are:
  - USER_ONLY_SECURITY
  - CLEAR_TEXT_PASSWORD_SECURITY
  - ENCRYPTED_PASSWORD_SECURITY
  - ENCRYPTED_USER_AND_PASSWORD_SECURITY - both password and user are encrypted
  - STRONG_PASSWORD_SUBSTITUTE_SECURITY
  The default security mechanism is USER_ONLY SECURITY

  If the application specifies a security mechanism then it will be the only one attempted. If the specified security mechanism is not supported by the conversation then an exception will be thrown and there will be no additional retries.

  This property is currently only available for the DNC driver.

  Both user and password need to be set for all security mechanism except USER_ONLY_SECURITY

  See Also:
    Constant Field Values

### CLEAR_TEXT_PASSWORD_SECURITY

    public static final short CLEAR_TEXT_PASSWORD_SECURITY

See Also:
  Constant Field Values

### ENCRYPTED_PASSWORD_SECURITY

    public static final short ENCRYPTED_PASSWORD_SECURITY

See Also:
  Constant Field Values

### ENCRYPTED_USER_AND_PASSWORD_SECURITY

    public static final short ENCRYPTED_USER_AND_PASSWORD_SECURITY

See Also:
  Constant Field Values

### STRONG_PASSWORD_SUBSTITUTE_SECURITY

    public static final short STRONG_PASSWORD_SUBSTITUTE_SECURITY

See Also:
  Constant Field Values

### connectionAttributes

    protected java.lang.String connectionAttributes

### TRACE_NONE

    public static final int TRACE_NONE

See Also:
  Constant Field Values

### TRACE_CONNECTION_CALLS

    public static final int TRACE_CONNECTION_CALLS

See Also:
  Constant Field Values

### TRACE_STATEMENT_CALLS

    public static final int TRACE_STATEMENT_CALLS

See Also:
  Constant Field Values

### TRACE_RESULT_SET_CALLS

    public static final int TRACE_RESULT_SET_CALLS

See Also:
  Constant Field Values

### TRACE_DRIVER_CONFIGURATION

    public static final int TRACE_DRIVER_CONFIGURATION

See Also:
  Constant Field Values

### TRACE_CONNECTS

    public static final int TRACE_CONNECTS

See Also:
  Constant Field Values

### TRACE_PROTOCOL_FLOWS

    public static final int TRACE_PROTOCOL_FLOWS

See Also:
  Constant Field Values

### TRACE_RESULT_SET_META_DATA

    public static final int TRACE_RESULT_SET_META_DATA

See Also:
  Constant Field Values

### TRACE_PARAMETER_META_DATA

    public static final int TRACE_PARAMETER_META_DATA

See Also:
  Constant Field Values

### TRACE_DIAGNOSTICS

    public static final int TRACE_DIAGNOSTICS

See Also:
  Constant Field Values

### TRACE_XA_CALLS

    public static final int TRACE_XA_CALLS

See Also:
  Constant Field Values

### TRACE_ALL

    public static final int TRACE_ALL

See Also:
  Constant Field Values

### propertyDefault_traceLevel

    public static final int propertyDefault_traceLevel

See Also:
  Constant Field Values

### traceLevel

    protected int traceLevel

Method Detail

### setLoginTimeout

    public void setLoginTimeout(int seconds)

### getLoginTimeout

    public int getLoginTimeout()

### setLogWriter

    public void setLogWriter(java.io.PrintWriter logWriter)

### getLogWriter

    public java.io.PrintWriter getLogWriter()

### getSSLModeFromString

    public static final int getSSLModeFromString(java.lang.String s)
                                          throws org.apache.derby.client.am.SqlException

  Parses the string and returns the corresponding constant for the SSL mode denoted.

  Valid values are `off`, `basic` and `peerAuthentication`.

  Parameters:
    `s` - string denoting the SSL mode
  Returns:
    A constant indicating the SSL mode denoted by the string. If the string is `null`, `SSL_OFF` is returned.
  Throws:
    `org.apache.derby.client.am.SqlException` - if the string has an invalid value

### getClientSSLMode

    public static final int getClientSSLMode(java.util.Properties properties)
                                      throws org.apache.derby.client.am.SqlException

  Returns the SSL mode specified by the property object.

  Parameters:
    `properties` - data source properties
  Returns:
    A constant indicating the SSL mode to use. Defaults to `SSL_OFF` if the SSL attribute isn't specified.
  Throws:
    `org.apache.derby.client.am.SqlException` - if an invalid value for the SSL mode is specified in the property object

### getUser

    public static java.lang.String getUser(java.util.Properties properties)

### getSecurityMechanism

    public static short getSecurityMechanism(java.util.Properties properties)

  Return security mechanism if it is set, else upgrade the security mechanism if possible and return the upgraded security mechanism

  Parameters:
    `properties` - Look in the properties if securityMechanism is set or not if set, return this security mechanism
  Returns:
    security mechanism

### getUpgradedSecurityMechanism

    public static short getUpgradedSecurityMechanism(java.lang.String password)

  This method has logic to upgrade security mechanism to a better (more secure) one if it is possible. Currently derby server only has support for USRIDPWD, USRIDONL, EUSRIDPWD and USRSSBPWD (10.2+) - this method only considers these possibilities. USRIDPWD, EUSRIDPWD and USRSSBPWD require a password, USRIDONL is the only security mechanism which does not require password. 1. if password is not available, then security mechanism possible is USRIDONL 2. if password is available,then USRIDPWD is returned.

  Parameters:
    `password` - password argument
  Returns:
    upgraded security mechanism if possible

### getRetrieveMessageText

    public static boolean getRetrieveMessageText(java.util.Properties properties)

### getTraceFile

    public static java.lang.String getTraceFile(java.util.Properties properties)

### getTraceDirectory

    public static java.lang.String getTraceDirectory(java.util.Properties properties)

  Check if derby.client.traceDirectory is provided as a JVM property. If yes, then we use that value. If not, then we look for traceDirectory in the the properties parameter.

  Parameters:
    `properties` - jdbc url properties
  Returns:
    value of traceDirectory property

### getTraceFileAppend

    public static boolean getTraceFileAppend(java.util.Properties properties)

### getPassword

    public static java.lang.String getPassword(java.util.Properties properties)

### setPassword

    public final void setPassword(java.lang.String password)

### getPassword

    public final java.lang.String getPassword()

### getReference

    public javax.naming.Reference getReference()
                                        throws javax.naming.NamingException

  Specified by:
    `getReference` in interface `javax.naming.Referenceable`
  Throws:
    `javax.naming.NamingException`

### computeDncLogWriter

    public static org.apache.derby.client.am.LogWriter computeDncLogWriter(org.apache.derby.client.am.Connection connection,
                                                                           java.io.PrintWriter logWriter,
                                                                           java.lang.String traceDirectory,
                                                                           java.lang.String traceFile,
                                                                           boolean traceFileAppend,
                                                                           java.lang.String logWriterInUseSuffix,
                                                                           int traceFileSuffixIndex,
                                                                           int traceLevel)
                                                                    throws org.apache.derby.client.am.SqlException

  Throws:
    `org.apache.derby.client.am.SqlException`

### setDatabaseName

    public void setDatabaseName(java.lang.String databaseName)

### getDatabaseName

    public java.lang.String getDatabaseName()

### setDataSourceName

    public void setDataSourceName(java.lang.String dataSourceName)

### getDataSourceName

    public java.lang.String getDataSourceName()

### setDescription

    public void setDescription(java.lang.String description)

### getDescription

    public java.lang.String getDescription()

### setPortNumber

    public void setPortNumber(int portNumber)

### getPortNumber

    public int getPortNumber()

### setServerName

    public void setServerName(java.lang.String serverName)

### getServerName

    public java.lang.String getServerName()

### setUser

    public void setUser(java.lang.String user)

### getUser

    public java.lang.String getUser()

### setRetrieveMessageText

    public void setRetrieveMessageText(boolean retrieveMessageText)

### getRetrieveMessageText

    public boolean getRetrieveMessageText()

### setSecurityMechanism

    public void setSecurityMechanism(short securityMechanism)

  Sets the security mechanism.

  Parameters:
    `securityMechanism` - to set

### getSecurityMechanism

    public short getSecurityMechanism()

  Return the security mechanism. If security mechanism has not been set explicitly on datasource, then upgrade the security mechanism to a more secure one if possible.

  Returns:
    the security mechanism
  See Also:
    `getUpgradedSecurityMechanism(String)`

### getSecurityMechanism

    public short getSecurityMechanism(java.lang.String password)

  Return the security mechanism for this datasource object. If security mechanism has not been set explicitly on datasource, then upgrade the security mechanism to a more secure one if possible.

  Parameters:
    `password` - password of user
  Returns:
    the security mechanism
  See Also:
    `getUpgradedSecurityMechanism(String)`

### setSsl

    public void setSsl(java.lang.String mode)
                throws org.apache.derby.client.am.SqlException

  Specifices the SSL encryption mode to use.

  Valid values are `off`, `basic` and `peerAuthentication`.

  Parameters:
    `mode` - the SSL mode to use (`off`, `basic` or `peerAuthentication`)
  Throws:
    `org.apache.derby.client.am.SqlException` - if the specified mode is invalid

### getSsl

    public java.lang.String getSsl()

  Returns the SSL encryption mode specified for the data source.

  Returns:
    `off`, `basic` or `peerAuthentication`.

### setCreateDatabase

    public final void setCreateDatabase(java.lang.String create)

  Set this property to create a new database. If this property is not set, the database (identified by databaseName) is assumed to be already existing.

  Parameters:
    `create` - if set to the string "create", this data source will try to create a new database of databaseName, or boot the database if one by that name already exists.

### getCreateDatabase

    public final java.lang.String getCreateDatabase()

  Returns:
    "create" if create is set, or null if not

### setShutdownDatabase

    public final void setShutdownDatabase(java.lang.String shutdown)

  Set this property if one wishes to shutdown the database identified by databaseName.

  Parameters:
    `shutdown` - if set to the string "shutdown", this data source will shutdown the database if it is running.

### getShutdownDatabase

    public final java.lang.String getShutdownDatabase()

  Returns:
    "shutdown" if shutdown is set, or null if not

### setConnectionAttributes

    public final void setConnectionAttributes(java.lang.String prop)

  Set this property to pass in more Derby specific connection URL attributes.
  Any attributes that can be set using a property of this DataSource implementation (e.g user, password) should not be set in connectionAttributes. Conflicting settings in connectionAttributes and properties of the DataSource will lead to unexpected behaviour.

  Parameters:
    `prop` - set to the list of Derby connection attributes separated by semi-colons. E.g., to specify an encryption bootPassword of "x8hhk2adf", and set upgrade to true, do the following:

                     ds.setConnectionAttributes("bootPassword=x8hhk2adf;upgrade=true");

    See Derby documentation for complete list.

### getConnectionAttributes

    public final java.lang.String getConnectionAttributes()

  Returns:
    Derby specific connection URL attributes

### getTraceLevel

    public static int getTraceLevel(java.util.Properties properties)

  Check if derby.client.traceLevel is provided as a JVM property. If yes, then we use that value. If not, then we look for traceLevel in the the properties parameter.

  Parameters:
    `properties` - jdbc url properties
  Returns:
    value of traceLevel property

### setTraceLevel

    public void setTraceLevel(int traceLevel)

### getTraceLevel

    public int getTraceLevel()

### setTraceFile

    public void setTraceFile(java.lang.String traceFile)

### getTraceFile

    public java.lang.String getTraceFile()

### setTraceDirectory

    public void setTraceDirectory(java.lang.String traceDirectory)

### getTraceDirectory

    public java.lang.String getTraceDirectory()

### setTraceFileAppend

    public void setTraceFileAppend(boolean traceFileAppend)

### getTraceFileAppend

    public boolean getTraceFileAppend()

### maxStatementsToPool

    public int maxStatementsToPool()

  Returns the maximum number of JDBC prepared statements a connection is allowed to cache.

  A basic data source will always return zero. If statement caching is required, use a `ConnectionPoolDataSource`.

  This method is used internally by Derby to determine if statement pooling is to be enabled or not.

  Returns:
    Maximum number of statements to cache, or `0` if caching is disabled (default).

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| Built on Mon 2009-08-10 13:17:35-0700, from revision 802917
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Apache Derby 10.5 API Documentation - Copyright © 2004,2008 The Apache Software Foundation. All Rights Reserved.