wt.query
Class TableColumn

java.lang.Object
  wt.query.TableColumn

All Implemented Interfaces:

Externalizable, Serializable, ColumnExpression, Expression, OrderByExpression, RelationalExpression

public class TableColumn
extends Object
implements ColumnExpression, Externalizable

This class represents a table column which can be used in a SQL statement. The exact table and column name specified are used directly in the SQL statement. This class should generally be used when specifying a column that is associated with an ExternalTableExpression that has been added to a query or for a column on a FROM expression with a known table alias. Using this class with some TableExpression implementations, such as ClassTableExpression, can result in invalid SQL since the actual table name can vary for descendant classes.

Supported API: true

Extendable: false

See Also:

ExternalTableExpression, Serialized Form

Field Summary

Fields inherited from interface wt.query.ColumnExpression

COLUMN_ALIAS

Constructor Summary

TableColumn(String a_tableName, String a_columnName)


Supported API: true

Method Summary

String	getColumnAlias() Gets the value of the attribute: columnAlias; Alias for the column expression.
String	getColumnName() Gets the value of the attribute: columnName; Column name in the external table.
String	getTableName() Gets the value of the attribute: tableName; External table name.
void	setColumnAlias(String a_ColumnAlias) Sets the value of the attribute: columnAlias; Alias for the column expression.
void	setColumnName(String a_ColumnName) Sets the value of the attribute: columnName; Column name in the external table.
void	setTableName(String a_TableName) Sets the value of the attribute: tableName; External table name.

Methods inherited from class java.lang.Object

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

Constructor Detail

TableColumn

public TableColumn(String a_tableName,
                   String a_columnName)

Supported API: true

Parameters:

a_tableName - Name of the database table.

a_columnName - Name of the database column.

Method Detail

getTableName

public String getTableName()

Gets the value of the attribute: tableName; External table name.

Supported API: true

Returns:

String

setTableName

public void setTableName(String a_TableName)
                  throws WTPropertyVetoException

Sets the value of the attribute: tableName; External table name.

Supported API: true

Parameters:

a_TableName -

Throws:

WTPropertyVetoException

getColumnName

public String getColumnName()

Gets the value of the attribute: columnName; Column name in the external table.

Supported API: true

Returns:

String

setColumnName

public void setColumnName(String a_ColumnName)
                   throws WTPropertyVetoException

Sets the value of the attribute: columnName; Column name in the external table.

Supported API: true

Parameters:

a_ColumnName -

Throws:

WTPropertyVetoException

getColumnAlias

public String getColumnAlias()

Gets the value of the attribute: columnAlias; Alias for the column expression.

Supported API: true

Specified by:

getColumnAlias in interface ColumnExpression

Returns:

String

setColumnAlias

public void setColumnAlias(String a_ColumnAlias)
                    throws WTPropertyVetoException

Sets the value of the attribute: columnAlias; Alias for the column expression.

Supported API: true

Specified by:

setColumnAlias in interface ColumnExpression

Parameters:

a_ColumnAlias -

Throws:

WTPropertyVetoException