java.lang.Object
- weka.core.converters.AbstractSaver
- - weka.core.converters.DatabaseSaver

All Implemented Interfaces:: java.io.Serializable, CapabilitiesHandler, BatchConverter, DatabaseConverter, IncrementalConverter, Saver, OptionHandler, RevisionHandler

public class DatabaseSaver
extends AbstractSaver
implements BatchConverter, IncrementalConverter, DatabaseConverter, OptionHandler

Writes to a database (tested with MySQL, InstantDB, HSQLDB).

Valid options are:

 -url <JDBC URL>
  The JDBC URL to connect to.
  (default: from DatabaseUtils.props file)

 -user <name>
  The user to connect with to the database.
  (default: none)

 -password <password>
  The password to connect with to the database.
  (default: none)

 -T <table name>
  The name of the table.
  (default: the relation name)

 -P
  Add an ID column as primary key. The name is specified
  in the DatabaseUtils file ('idColumn'). The DatabaseLoader
  won't load this column.

 -i <input file name>
  Input file in arff format that should be saved in database.

Version:: $Revision: 7499 $
Author:: Stefan Mutter (mutter@cs.waikato.ac.nz)
See Also:: Serialized Form

Field Summary
- Fields inherited from interface weka.core.converters.Saver
  BATCH, INCREMENTAL, NONE

Constructor Summary

Constructors
Constructor Description

DatabaseSaver()
Constructor.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`autoKeyGenerationTipText()`	Returns the tip text for this property.
`void`	`cancel()`	Cancels the incremental saving process and tries to drop the table if the write mode is CANCEL.
`void`	`connectToDatabase()`	Opens a connection to the database.
`boolean`	`getAutoKeyGeneration()`	Gets whether or not a primary key will be generated automatically.
`Capabilities`	`getCapabilities()`	Returns the Capabilities of this saver.
`java.lang.String[]`	`getOptions()`	Gets the setting.
`java.lang.String`	`getPassword()`	Returns the database password.
`boolean`	`getRelationForTableName()`	Gets whether or not the relation name is used as name of the table.
`java.lang.String`	`getRevision()`	Returns the revision string.
`java.lang.String`	`getTableName()`	Gets the table's name.
`java.lang.String`	`getUrl()`	Gets the database URL.
`java.lang.String`	`getUser()`	Gets the database user.
`java.lang.String`	`globalInfo()`	Returns a string describing this Saver.
`java.util.Enumeration`	`listOptions()`	Lists the available options.
`static void`	`main(java.lang.String[] options)`	Main method.
`java.lang.String`	`passwordTipText()`	Returns the tip text for this property.
`java.lang.String`	`relationForTableNameTipText()`	Returns the tip text fo this property.
`void`	`resetOptions()`	Resets the Saver ready to save a new data set.
`void`	`setAutoKeyGeneration(boolean flag)`	En/Dis-ables the automatic generation of a primary key.
`void`	`setDestination()`	Sets the database url using the DatabaseUtils file.
`void`	`setDestination(java.lang.String url)`	Sets the database url.
`void`	`setDestination(java.lang.String url, java.lang.String userName, java.lang.String password)`	Sets the database url.
`void`	`setOptions(java.lang.String[] options)`	Sets the options.
`void`	`setPassword(java.lang.String password)`	Sets the database password.
`void`	`setRelationForTableName(boolean flag)`	En/Dis-ables that the relation name is used for the name of the table (default enabled).
`void`	`setTableName(java.lang.String tn)`	Sets the table's name.
`void`	`setUrl(java.lang.String url)`	Sets the database URL.
`void`	`setUser(java.lang.String user)`	Sets the database user.
`java.lang.String`	`tableNameTipText()`	Returns the tip text for this property.
`java.lang.String`	`urlTipText()`	Returns the tip text for this property.
`java.lang.String`	`userTipText()`	Returns the tip text for this property.
`void`	`writeBatch()`	Writes a Batch of instances.
`void`	`writeIncremental(Instance inst)`	Saves an instances incrementally.

Methods inherited from class weka.core.converters.AbstractSaver
filePrefix, getFileExtension, getInstances, getWriteMode, resetStructure, retrieveDir, setDestination, setDestination, setDir, setDirAndPrefix, setFile, setFilePrefix, setInstances, setRetrieval, setStructure

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

- Constructor Detail
  - DatabaseSaver
```
public DatabaseSaver()
              throws java.lang.Exception
```
    Constructor.
    
    Throws:
    
    java.lang.Exception - throws Exception if property file cannot be read
- Method Detail
  - resetOptions
```
public void resetOptions()
```
    Resets the Saver ready to save a new data set.
    
    Overrides:
    
    resetOptions in class AbstractSaver
  - cancel
```
public void cancel()
```
    Cancels the incremental saving process and tries to drop the table if the write mode is CANCEL.
    
    Overrides:
    
    cancel in class AbstractSaver
  - globalInfo
```
public java.lang.String globalInfo()
```
    Returns a string describing this Saver.
    
    Returns:
    
    a description of the Saver suitable for displaying in the explorer/experimenter gui
  - setTableName
```
public void setTableName(java.lang.String tn)
```
    Sets the table's name.
    
    Parameters:
    
    tn - the name of the table
  - getTableName
```
public java.lang.String getTableName()
```
    Gets the table's name.
    
    Returns:
    
    the table's name
  - tableNameTipText
```
public java.lang.String tableNameTipText()
```
    Returns the tip text for this property.
    
    Returns:
    
    the tip text for this property
  - setAutoKeyGeneration
```
public void setAutoKeyGeneration(boolean flag)
```
    En/Dis-ables the automatic generation of a primary key.
    
    Parameters:
    
    flag - flag for automatic key-genereration
  - getAutoKeyGeneration
```
public boolean getAutoKeyGeneration()
```
    Gets whether or not a primary key will be generated automatically.
    
    Returns:
    
    true if a primary key column will be generated, false otherwise
  - autoKeyGenerationTipText
```
public java.lang.String autoKeyGenerationTipText()
```
    Returns the tip text for this property.
    
    Returns:
    
    tip text for this property
  - setRelationForTableName
```
public void setRelationForTableName(boolean flag)
```
    En/Dis-ables that the relation name is used for the name of the table (default enabled).
    
    Parameters:
    
    flag - if true the relation name is used as table name
  - getRelationForTableName
```
public boolean getRelationForTableName()
```
    Gets whether or not the relation name is used as name of the table.
    
    Returns:
    
    true if the relation name is used as the name of the table, false otherwise
  - relationForTableNameTipText
```
public java.lang.String relationForTableNameTipText()
```
    Returns the tip text fo this property.
    
    Returns:
    
    the tip text for this property
  - setUrl
```
public void setUrl(java.lang.String url)
```
    Sets the database URL.
    
    Specified by:
    
    setUrl in interface DatabaseConverter
    
    Parameters:
    
    url - the URL
  - getUrl
```
public java.lang.String getUrl()
```
    Gets the database URL.
    
    Specified by:
    
    getUrl in interface DatabaseConverter
    
    Returns:
    
    the URL
  - urlTipText
```
public java.lang.String urlTipText()
```
    Returns the tip text for this property.
    
    Returns:
    
    the tip text for this property
  - setUser
```
public void setUser(java.lang.String user)
```
    Sets the database user.
    
    Specified by:
    
    setUser in interface DatabaseConverter
    
    Parameters:
    
    user - the user name
  - getUser
```
public java.lang.String getUser()
```
    Gets the database user.
    
    Specified by:
    
    getUser in interface DatabaseConverter
    
    Returns:
    
    the user name
  - userTipText
```
public java.lang.String userTipText()
```
    Returns the tip text for this property.
    
    Returns:
    
    the tip text for this property
  - setPassword
```
public void setPassword(java.lang.String password)
```
    Sets the database password.
    
    Specified by:
    
    setPassword in interface DatabaseConverter
    
    Parameters:
    
    password - the password
  - getPassword
```
public java.lang.String getPassword()
```
    Returns the database password.
    
    Returns:
    
    the database password
  - passwordTipText
```
public java.lang.String passwordTipText()
```
    Returns the tip text for this property.
    
    Returns:
    
    the tip text for this property
  - setDestination
```
public void setDestination(java.lang.String url,
                           java.lang.String userName,
                           java.lang.String password)
```
    Sets the database url.
    
    Parameters:
    
    url - the database url
    
    userName - the user name
    
    password - the password
  - setDestination
```
public void setDestination(java.lang.String url)
```
    Sets the database url.
    
    Parameters:
    
    url - the database url
  - setDestination
```
public void setDestination()
```
    Sets the database url using the DatabaseUtils file.
  - getCapabilities
```
public Capabilities getCapabilities()
```
    Returns the Capabilities of this saver.
    
    Specified by:
    
    getCapabilities in interface CapabilitiesHandler
    
    Overrides:
    
    getCapabilities in class AbstractSaver
    
    Returns:
    
    the capabilities of this object
    
    See Also:
    
    Capabilities
  - connectToDatabase
```
public void connectToDatabase()
```
    Opens a connection to the database.
  - writeIncremental
```
public void writeIncremental(Instance inst)
                      throws java.io.IOException
```
    Saves an instances incrementally. Structure has to be set by using the setStructure() method or setInstances() method. When a structure is set, a table is created.
    
    Specified by:
    
    writeIncremental in interface Saver
    
    Overrides:
    
    writeIncremental in class AbstractSaver
    
    Parameters:
    
    inst - the instance to save
    
    Throws:
    
    java.io.IOException - throws IOEXception.
  - writeBatch
```
public void writeBatch()
                throws java.io.IOException
```
    Writes a Batch of instances.
    
    Specified by:
    
    writeBatch in interface Saver
    
    Specified by:
    
    writeBatch in class AbstractSaver
    
    Throws:
    
    java.io.IOException - throws IOException
  - getOptions
```
public java.lang.String[] getOptions()
```
    Gets the setting.
    
    Specified by:
    
    getOptions in interface OptionHandler
    
    Returns:
    
    the current setting
  - listOptions
```
public java.util.Enumeration listOptions()
```
    Lists the available options.
    
    Specified by:
    
    listOptions in interface OptionHandler
    
    Returns:
    
    an enumeration of the available options
  - setOptions
```
public void setOptions(java.lang.String[] options)
                throws java.lang.Exception
```
    Sets the options.
    Valid options are:
    
    -url <JDBC URL> The JDBC URL to connect to. (default: from DatabaseUtils.props file)
    
    -user <name> The user to connect with to the database. (default: none)
    
    -password <password> The password to connect with to the database. (default: none)
    
    -T <table name> The name of the table. (default: the relation name)
    
    -P Add an ID column as primary key. The name is specified in the DatabaseUtils file ('idColumn'). The DatabaseLoader won't load this column.
    
    -i <input file name> Input file in arff format that should be saved in database.
    Specified by:
    
    setOptions in interface OptionHandler
    
    Parameters:
    
    options - the options
    
    Throws:
    
    java.lang.Exception - if options cannot be set
  - getRevision
```
public java.lang.String getRevision()
```
    Returns the revision string.
    
    Specified by:
    
    getRevision in interface RevisionHandler
    
    Returns:
    
    the revision
  - main
```
public static void main(java.lang.String[] options)
```
    Main method.
    
    Parameters:
    
    options - should contain the options of a Saver.

Class DatabaseSaver

Field Summary

Fields inherited from interface weka.core.converters.Saver

Constructor Summary

Method Summary

Methods inherited from class weka.core.converters.AbstractSaver

Methods inherited from class java.lang.Object

Constructor Detail

DatabaseSaver

Method Detail

resetOptions

cancel

globalInfo

setTableName

getTableName

tableNameTipText

setAutoKeyGeneration

getAutoKeyGeneration

autoKeyGenerationTipText

setRelationForTableName

getRelationForTableName

relationForTableNameTipText

setUrl

getUrl

urlTipText

setUser

getUser

userTipText

setPassword

getPassword

passwordTipText

setDestination

setDestination

setDestination

getCapabilities

connectToDatabase

writeIncremental

writeBatch

getOptions

listOptions

setOptions

getRevision

main