org.axiondb.engine.tables
Class BaseTable

java.lang.Object
  org.axiondb.event.BaseTableModificationPublisher
      org.axiondb.engine.tables.BaseTable

All Implemented Interfaces:

RowSource, Table

Direct Known Subclasses:

BaseDiskTable, ExternalDatabaseTable, MemoryTable

public abstract class BaseTable

extends BaseTableModificationPublisher

implements Table

An abstract base implementation of Table.

Version:

$Revision: 1.13 $ $Date: 2004/09/09 23:47:44 $

Field Summary

Fields inherited from interface org.axiondb.Table

REGULAR_TABLE_TYPE, SYSTEM_TABLE_TYPE

Constructor Summary

BaseTable(String name)

Method Summary

void	addColumn(Column col) Add the given Columnto this table.
void	addConstraint(Constraint constraint)
void	addIndex(Index index) Add an index, associating it with a Column, and adding it as a org.axiondb.TableModificationListenerto the table.
void	addRow(Row row) Insert the given Row.
abstract void	applyDeletes(org.apache.commons.collections.primitives.IntCollection rowids) Remove the specified rows from this table and any associated indices.
protected void	applyDeletesToIndices(org.apache.commons.collections.primitives.IntCollection rowIds)
abstract void	applyInserts(Collection rows) Insert the given rows into this table and any associated indices.
protected void	applyInsertsToIndices(Collection rows)
abstract void	applyUpdates(Collection rows) Update the given rows in this table and any associated indices.
protected void	applyUpdatesToIndices(Collection rows)
protected void	checkConstraints(RowEvent event)
protected void	checkConstraints(RowEvent event, boolean deferred)
protected void	deleteRow(Row row)
void	drop() Drop this table from the database.
abstract void	freeRowId(int id) Un-reserve a row id.
Column	getColumn(int index) Return the Columncorresponding to the given zero-based index .
Column	getColumn(String name) Return the Columnfor the given name .
int	getColumnCount() Return the number of Columns I contain.
Iterator	getColumnIdentifiers() Return an Iteratorover the ColumnIdentifiersfor my Columns.
int	getColumnIndex(String name) Return the zero-based index of the Columnwith the given name .
Iterator	getConstraints()
RowIterator	getIndexedRows(Selectable node, boolean readOnly)
Index	getIndexForColumn(Column column) Return the first Indexthat pertains to the given Column, or null if no such Indexexists.
Iterator	getIndices() Obtain an Iteratorover my indices.
RowIterator	getMatchingRows(List selectables, List values) Obtain an iteratorover my Rows where each Selectablein the selectable list evaluatesto the corresponding value in the value list.
String	getName() Get the name of this table.
abstract int	getNextRowId() Reserve a row id.
abstract Row	getRow(int id)
abstract int	getRowCount() Return the number of Rows I contain.
protected abstract RowIterator	getRowIterator()
RowIterator	getRowIterator(boolean readOnly) Obtain an iteratorover my Rows.
String	getType() Get the type of this table.
boolean	hasColumn(ColumnIdentifier id) Indicate whether the ColumnIdentifierreferences a column in this table
protected boolean	hasDeferredConstraint()
boolean	hasIndex(String name)
boolean	isColumnIndexed(Column column) Check to see if an Indexexists for the given Column
boolean	isPrimaryKeyConstraintExists(String columnName) check if primary constraint exists on a column
boolean	isUniqueConstraintExists(String columnName) check if unique constraint exists on a column
RowDecorator	makeRowDecorator()
TransactableTable	makeTransactableTable() Create a TransactableTablefor this table.
protected void	notifyColumnsOfNewLobDir(File directory)
abstract void	populateIndex(Index index) Populate an Index, adding my current rows to it.
protected void	readColumns(ObjectInputStream in)
protected void	readConstraints(ObjectInputStream in)
void	remount(File dir, boolean datafilesonly) Notify this table that its disk-location has moved.
void	removeConstraint(String name)
void	removeIndex(Index index) Remove an index, both from the indices and as a TableModificationListener
void	rename(String oldName, String newName)
protected void	setName(String name)
protected void	setType(String type)
void	shutdown() The database is shutting down, shutdown this table also.
String	toString()
protected void	truncateIndices()
void	updateRow(Row oldrow, Row newrow) Update the given Row.
protected void	writeColumns(ObjectOutputStream out)
protected void	writeConstraints(ObjectOutputStream out)

Methods inherited from class org.axiondb.event.BaseTableModificationPublisher

addTableModificationListener, getTableModificationListeners, publishEvent, removeTableModificationListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axiondb.Table

addTableModificationListener, removeTableModificationListener, truncate

Constructor Detail

BaseTable

public BaseTable(String name)

Method Detail

applyDeletes

public abstract void applyDeletes(org.apache.commons.collections.primitives.IntCollection rowids)
                           throws AxionException

Description copied from interface: Table

Remove the specified rows from this table and any associated indices. This process is allowed to be destructive, the table my delete values from the given list.

Specified by:

applyDeletes in interface Table

Throws:

AxionException

applyInserts

public abstract void applyInserts(Collection rows)
                           throws AxionException

Description copied from interface: Table

Insert the given rows into this table and any associated indices. This process is allowed to be destructive, the table my delete rows from the given list.

Specified by:

applyInserts in interface Table

Parameters:

rows - a collection of Rows

Throws:

AxionException

applyUpdates

public abstract void applyUpdates(Collection rows)
                           throws AxionException

Description copied from interface: Table

Update the given rows in this table and any associated indices. This process is allowed to be destructive, the table my delete rows from the given list.

Specified by:

applyUpdates in interface Table

Throws:

AxionException

freeRowId

public abstract void freeRowId(int id)

Description copied from interface: Table

Un-reserve a row id.

Specified by:

freeRowId in interface Table

getNextRowId

public abstract int getNextRowId()

Description copied from interface: Table

Reserve a row id.

Specified by:

getNextRowId in interface Table

getRowCount

public abstract int getRowCount()

Description copied from interface: Table

Return the number of Rows I contain.

Specified by:

getRowCount in interface Table

populateIndex

public abstract void populateIndex(Index index)
                            throws AxionException

Description copied from interface: Table

Populate an Index, adding my current rows to it. Does not addthe index.

Specified by:

populateIndex in interface Table

Parameters:

index -

Throws:

AxionException

See Also:

Table.addIndex(org.axiondb.Index)

getRow

public abstract Row getRow(int id)
                    throws AxionException

Specified by:

getRow in interface RowSource

Throws:

AxionException

getRowIterator

protected abstract RowIterator getRowIterator()
                                       throws AxionException

Throws:

AxionException

getRowIterator

public RowIterator getRowIterator(boolean readOnly)
                           throws AxionException

Description copied from interface: Table

Obtain an iteratorover my Rows.

Specified by:

getRowIterator in interface Table

Parameters:

readOnly - when true, the caller does not expect to be able to modify (i.e., call RowIterator.set(org.axiondb.Row)or RowIterator.remove()on) the returned RowIterator, the returned iterator may be unmodifiable.

Throws:

AxionException

addRow

public void addRow(Row row)
            throws AxionException

Description copied from interface: Table

Insert the given Row.

Specified by:

addRow in interface Table

Throws:

AxionException

deleteRow

protected void deleteRow(Row row)
                  throws AxionException

Throws:

AxionException

updateRow

public void updateRow(Row oldrow,
                      Row newrow)
               throws AxionException

Description copied from interface: Table

Update the given Row.

Specified by:

updateRow in interface Table

Throws:

AxionException

truncateIndices

protected void truncateIndices()
                        throws AxionException

Throws:

AxionException

toString

public String toString()

getName

public String getName()

Description copied from interface: Table

Get the name of this table.

Specified by:

getName in interface Table

getType

public String getType()

Description copied from interface: Table

Get the type of this table.

Specified by:

getType in interface Table

setType

protected void setType(String type)

setName

protected void setName(String name)

addConstraint

public void addConstraint(Constraint constraint)
                   throws AxionException

Specified by:

addConstraint in interface Table

Throws:

AxionException

removeConstraint

public void removeConstraint(String name)

Specified by:

removeConstraint in interface Table

isUniqueConstraintExists

public boolean isUniqueConstraintExists(String columnName)

check if unique constraint exists on a column

Specified by:

isUniqueConstraintExists in interface Table

Parameters:

columnName - name of the columm

Returns:

true if uniqueConstraint exists on the column

isPrimaryKeyConstraintExists

public boolean isPrimaryKeyConstraintExists(String columnName)

check if primary constraint exists on a column

Specified by:

isPrimaryKeyConstraintExists in interface Table

Returns:

if PrimaryKeyConstraint exists on the column

getConstraints

public Iterator getConstraints()

Specified by:

getConstraints in interface Table

addIndex

public void addIndex(Index index)
              throws AxionException

Description copied from interface: Table

Add an index, associating it with a Column, and adding it as a org.axiondb.TableModificationListenerto the table.

Specified by:

addIndex in interface Table

Parameters:

index -

Throws:

AxionException

See Also:

Table.addIndex(org.axiondb.Index), Table.addTableModificationListener(org.axiondb.event.TableModificationListener), Table.getIndexForColumn(org.axiondb.Column), Table.isColumnIndexed(org.axiondb.Column), Table.populateIndex(org.axiondb.Index)

removeIndex

public void removeIndex(Index index)
                 throws AxionException

Description copied from interface: Table

Remove an index, both from the indices and as a TableModificationListener

Specified by:

removeIndex in interface Table

Parameters:

index -

Throws:

AxionException

getIndexForColumn

public Index getIndexForColumn(Column column)

Description copied from interface: Table

Return the first Indexthat pertains to the given Column, or null if no such Indexexists.

Specified by:

getIndexForColumn in interface Table

Returns:

the pertinent Column, or null if no such Indexexists

isColumnIndexed

public boolean isColumnIndexed(Column column)

Description copied from interface: Table

Check to see if an Indexexists for the given Column

Specified by:

isColumnIndexed in interface Table

Parameters:

column - Columnto check

Returns:

true iff there is an existing Indexfor the given Column

getMatchingRows

public RowIterator getMatchingRows(List selectables,
                                   List values)
                            throws AxionException

Description copied from interface: Table

Obtain an iteratorover my Rows where each Selectablein the selectable list evaluatesto the corresponding value in the value list.

This is functionally similiar to executing a SELECT over this table where selectable[i] = value[i] for each value of i . The return RowIterator is not modifiable.

Specified by:

getMatchingRows in interface Table

Throws:

AxionException

getIndexedRows

public RowIterator getIndexedRows(Selectable node,
                                  boolean readOnly)
                           throws AxionException

Specified by:

getIndexedRows in interface Table

Parameters:

readOnly - when true, the caller does not expect to be able to modify (i.e., call RowIterator.set(org.axiondb.Row)or RowIterator.remove()on) the returned RowIterator, the returned iterator may be unmodifiable.

Throws:

AxionException

addColumn

public void addColumn(Column col)
               throws AxionException

Add the given Columnto this table. This implementation throws an AxionExceptionif rows have already been added to the table.

Specified by:

addColumn in interface Table

Throws:

AxionException

hasColumn

public boolean hasColumn(ColumnIdentifier id)

Description copied from interface: Table

Indicate whether the ColumnIdentifierreferences a column in this table

Specified by:

hasColumn in interface Table

getColumn

public Column getColumn(int index)

Description copied from interface: Table

Return the Columncorresponding to the given zero-based index .

Specified by:

getColumn in interface Table

getColumn

public Column getColumn(String name)

Description copied from interface: Table

Return the Columnfor the given name .

Specified by:

getColumn in interface Table

getColumnIndex

public int getColumnIndex(String name)
                   throws AxionException

Description copied from interface: Table

Return the zero-based index of the Columnwith the given name .

Specified by:

getColumnIndex in interface Table

Throws:

AxionException

getColumnIdentifiers

public Iterator getColumnIdentifiers()

Description copied from interface: Table

Return an Iteratorover the ColumnIdentifiersfor my Columns.

Specified by:

getColumnIdentifiers in interface Table

getColumnCount

public int getColumnCount()

Description copied from interface: Table

Return the number of Columns I contain.

Specified by:

getColumnCount in interface Table

drop

public void drop()
          throws AxionException

Description copied from interface: Table

Drop this table from the database.

Specified by:

drop in interface Table

Throws:

AxionException

remount

public void remount(File dir,
                    boolean datafilesonly)
             throws AxionException

Description copied from interface: Table

Notify this table that its disk-location has moved.

Specified by:

remount in interface Table

Throws:

AxionException

rename

public void rename(String oldName,
                   String newName)
            throws AxionException

Specified by:

rename in interface Table

Throws:

AxionException

shutdown

public void shutdown()
              throws AxionException

Description copied from interface: Table

The database is shutting down, shutdown this table also.

Specified by:

shutdown in interface Table

Throws:

AxionException

makeRowDecorator

public RowDecorator makeRowDecorator()

Specified by:

makeRowDecorator in interface Table

makeTransactableTable

public TransactableTable makeTransactableTable()

Description copied from interface: Table

Create a TransactableTablefor this table.

Specified by:

makeTransactableTable in interface Table

getIndices

public Iterator getIndices()

Description copied from interface: Table

Obtain an Iteratorover my indices.

Specified by:

getIndices in interface Table

hasIndex

public boolean hasIndex(String name)

Specified by:

hasIndex in interface Table

checkConstraints

protected void checkConstraints(RowEvent event)
                         throws AxionException

Throws:

AxionException

checkConstraints

protected void checkConstraints(RowEvent event,
                                boolean deferred)
                         throws AxionException

Throws:

AxionException

hasDeferredConstraint

protected boolean hasDeferredConstraint()

notifyColumnsOfNewLobDir

protected void notifyColumnsOfNewLobDir(File directory)

writeColumns

protected void writeColumns(ObjectOutputStream out)
                     throws IOException

Throws:

IOException

readColumns

protected void readColumns(ObjectInputStream in)
                    throws IOException,
                           ClassNotFoundException

Throws:

IOException

ClassNotFoundException

writeConstraints

protected void writeConstraints(ObjectOutputStream out)
                         throws IOException

Throws:

IOException

readConstraints

protected void readConstraints(ObjectInputStream in)
                        throws IOException,
                               ClassNotFoundException

Throws:

IOException

ClassNotFoundException

applyDeletesToIndices

protected void applyDeletesToIndices(org.apache.commons.collections.primitives.IntCollection rowIds)
                              throws AxionException

Throws:

AxionException

applyUpdatesToIndices

protected void applyUpdatesToIndices(Collection rows)
                              throws AxionException

Throws:

AxionException

applyInsertsToIndices

protected void applyInsertsToIndices(Collection rows)
                              throws AxionException

Throws:

AxionException