Package adams.db

Class AbstractIndexedTable

java.lang.Object

adams.core.logging.LoggingObject

adams.db.generic.SQL

adams.db.AbstractTable

adams.db.AbstractIndexedTable

All Implemented Interfaces:

LoggingSupporter, SizeOfHandler, DatabaseConnectionProvider, DatabaseConnectionUser, SQLIntf, TableInterface, DatabaseConnectionChangeListener, Serializable

Direct Known Subclasses:

BulkInsertTable, LogT, ReportTableByDBID, ReportTableByID

public abstract class AbstractIndexedTable
extends AbstractTable

Class to implement the features of a database table. Subclass with column descriptions

Author:

dale

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	m_init	has this object been initialised.

Fields inherited from class adams.db.AbstractTable

FILENAME, m_Properties, m_TableName

Fields inherited from class adams.db.generic.SQL

m_DatabaseConnection, m_Debug, m_TableManager

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Fields inherited from interface adams.db.SQLIntf

FAKE_TABLE_NAME

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractIndexedTable(AbstractDatabaseConnection dbcon, String tableName)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected boolean	columnsMatch(ColumnMapping cm, boolean print, boolean addMissing)	Determine if columns (name & datatype) of table match table specification.
protected boolean	columnsMatchTest(ColumnMapping cm, boolean print, boolean tryAgain, boolean addMissing)	Determine if columns (name & datatype) of table match table specification.
protected boolean	create()	Create the table in database according to column and index specs.
String	getAllColumns()	Returns the SELECT part with all columns listed.
protected abstract ColumnMapping	getColumnMapping()	Implement this method to return column names and data types.
protected abstract Indices	getIndices()	Implement this method to return required indices for this table.
static String[]	getTables()	Returns a list with classnames of tables.
boolean	init()	Initialise table.
static void	initTables(AbstractDatabaseConnection dbcon)	Initializes all tables.
boolean	isThere(String condition)	Returns true if this table holds data that satisfies 'condition'.
protected boolean	postCreate()	Optional post-create hook for filling the table with initial values.
ResultSet	select(String columns)	Do a select on given columns for all data in table.
ResultSet	select(String columns, String where)	Do a select on given columns for all data in table, with condition.
ResultSet	selectDistinct(String columns)	Do a select distinct on given columns for all data in table, with condition.
ResultSet	selectDistinct(String columns, String where)	Do a select distinct on given columns for all data in table, with condition.
boolean	truncate()	Empty table.
int	update(String updateString, String where)	Update table.

Methods inherited from class adams.db.AbstractTable

columnExists, databaseConnectionStateChanged, getProperties, getTableName, isEnabled, tableExists, toString

Methods inherited from class adams.db.generic.SQL

columnExists, doSelect, drop, execute, executeGeneratedKeys, getDatabaseConnection, getDebug, getMaxColumnNameLength, getResultSet, getSimpleResultSet, prepareStatement, prepareStatement, prepareStatement, select, selectDistinct, selectDouble, selectInt, selectLong, selectString, selectStrings, setDebug, singleton, tableExists, truncate, update, updatePrefix

Methods inherited from class adams.core.logging.LoggingObject

configureLogger, getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled, sizeOf

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.core.logging.LoggingSupporter

getLogger, isLoggingEnabled

Field Detail

m_init

protected boolean m_init

has this object been initialised.

Constructor Detail

AbstractIndexedTable

protected AbstractIndexedTable(AbstractDatabaseConnection dbcon,
                               String tableName)

Constructor.

Parameters:

dbcon - the database context this table is used in

tableName - the name of the table

Method Detail

getIndices

protected abstract Indices getIndices()

Implement this method to return required indices for this table.

Returns:

Indices

getColumnMapping

protected abstract ColumnMapping getColumnMapping()

Implement this method to return column names and data types.

Returns:

Column Mapping

getAllColumns

public String getAllColumns()

Returns the SELECT part with all columns listed.

Returns:

the SELECT part

columnsMatchTest

protected boolean columnsMatchTest(ColumnMapping cm,
                                   boolean print,
                                   boolean tryAgain,
                                   boolean addMissing)

Determine if columns (name & datatype) of table match table specification.

Parameters:

cm - the column mapping to use

print - whether to print error messages etc

tryAgain - whether to try again

addMissing - whether to add the missing columns (if possible)

Returns:

columns match?

columnsMatch

protected boolean columnsMatch(ColumnMapping cm,
                               boolean print,
                               boolean addMissing)

Determine if columns (name & datatype) of table match table specification.

Parameters:

cm - the column mapping to use

print - whether to print error messages etc

addMissing - whether to add missing columns if possible

Returns:

columns match?

init

public boolean init()

Initialise table. Create if necessary, else compare with spec.

Specified by:

init in class AbstractTable

Returns:

success?

create

protected boolean create()

Create the table in database according to column and index specs.

Returns:

success?

postCreate

protected boolean postCreate()

Optional post-create hook for filling the table with initial values. The default implementation does nothing and just returns true.

Returns:

true if successfully run

isThere

public boolean isThere(String condition)

Returns true if this table holds data that satisfies 'condition'.

Parameters:

condition - boolean SQL eg "JOBNO=100 AND SAMPLENO=2"

Returns:

true if condition holds for tablename

update

public int update(String updateString,
                  String where)
           throws Exception

Update table.

Parameters:

updateString - comma separated updates. e.g weight='80',height=180

where - condition. e.g name='bob smith'

Returns:

number of rows affected

Throws:

Exception - if something goes wrong

truncate

public boolean truncate()

Empty table.

Returns:

success?

select

public ResultSet select(String columns)
                 throws Exception

Do a select on given columns for all data in table.

Parameters:

columns - comma separated column list

Returns:

resulset of data

Throws:

Exception - if something goes wrong

select

public ResultSet select(String columns,
                        String where)
                 throws Exception

Do a select on given columns for all data in table, with condition.

Parameters:

columns - columns to select

where - condition

Returns:

resultset of data

Throws:

Exception - if something goes wrong

selectDistinct

public ResultSet selectDistinct(String columns)
                         throws Exception

Do a select distinct on given columns for all data in table, with condition.

Parameters:

columns - columns to select

Returns:

resultset of data

Throws:

Exception - if something goes wrong

selectDistinct

public ResultSet selectDistinct(String columns,
                                String where)
                         throws Exception

Do a select distinct on given columns for all data in table, with condition.

Parameters:

columns - columns to select

where - condition

Returns:

resultset of data

Throws:

Exception - if something goes wrong

getTables

public static String[] getTables()

Returns a list with classnames of tables.

Returns:

the table classnames

initTables

public static void initTables(AbstractDatabaseConnection dbcon)

Initializes all tables.

Parameters:

dbcon - the database context