wt.query
Interface ColumnExpression

All Superinterfaces:

Expression, OrderByExpression, RelationalExpression

All Known Implementing Classes:

ClassAttribute, ConstantExpression, KeywordExpression, SQLFunction, TableColumn

public interface ColumnExpression

extends OrderByExpression, RelationalExpression

This interface defines an arbitrary expression that can be used to specify a "column" in a SQL SELECT, ORDER BY, GROUP BY or WHERE clause.

Supported API: true

Extendable: false

Field Summary

static String	ADVANCED_QUERY Label for the attribute; Indicates if the expression uses advanced query capabilities.
static String	ADVANCED_QUERY_ENABLED Label for the attribute; Indicates if advanced query capabilities are enabled.
static String	COLUMN_ALIAS Label for the attribute; Alias for the column expression.
static String	JAVA_TYPE Label for the attribute; The java type of this expression.

Fields inherited from interface wt.query.Expression

FROM_COUNT

Fields inherited from interface wt.query.RelationalExpression

BIND_PARAMETER

Method Summary

String	getColumnAlias() Gets the value of the attribute: COLUMN_ALIAS.
Class	getJavaType() Gets the value of the attribute: JAVA_TYPE.
boolean	isAdvancedQuery() Gets the value of the attribute: ADVANCED_QUERY.
boolean	isAdvancedQueryEnabled() Gets the value of the attribute: ADVANCED_QUERY_ENABLED.
void	setAdvancedQueryEnabled(boolean a_AdvancedQueryEnabled) Sets the value of the attribute: ADVANCED_QUERY_ENABLED.
void	setColumnAlias(String a_ColumnAlias) Sets the value of the attribute: COLUMN_ALIAS.

Methods inherited from interface wt.query.Expression

getFromCount, setFromAlias, validate

Methods inherited from interface wt.query.RelationalExpression

getBindParameter, getClassAttributes, getExpression

Field Detail

COLUMN_ALIAS

public static final String COLUMN_ALIAS

Label for the attribute; Alias for the column expression.

Supported API: true

See Also:

Constant Field Values

JAVA_TYPE

public static final String JAVA_TYPE

Label for the attribute; The java type of this expression.

Supported API: false

See Also:

Constant Field Values

ADVANCED_QUERY

public static final String ADVANCED_QUERY

Label for the attribute; Indicates if the expression uses advanced query capabilities.

Supported API: false

See Also:

Constant Field Values

ADVANCED_QUERY_ENABLED

public static final String ADVANCED_QUERY_ENABLED

Label for the attribute; Indicates if advanced query capabilities are enabled.

Supported API: false

See Also:

Constant Field Values

Method Detail

getColumnAlias

public String getColumnAlias()

Gets the value of the attribute: COLUMN_ALIAS. Alias for the column expression.

Supported API: true

Specified by:

getColumnAlias in interface OrderByExpression

Returns:

String

setColumnAlias

public void setColumnAlias(String a_ColumnAlias)
                    throws WTPropertyVetoException

Sets the value of the attribute: COLUMN_ALIAS. Alias for the column expression.

Supported API: true

Parameters:

a_ColumnAlias -

Throws:

WTPropertyVetoException

getJavaType

public Class getJavaType()
                  throws WTException

Gets the value of the attribute: JAVA_TYPE. The java type of this expression.

Supported API: false

Returns:

Class

Throws:

WTException

isAdvancedQuery

public boolean isAdvancedQuery()
                        throws WTException

Gets the value of the attribute: ADVANCED_QUERY. Indicates if the expression uses advanced query capabilities.

Supported API: false

Returns:

boolean

Throws:

WTException

isAdvancedQueryEnabled

public boolean isAdvancedQueryEnabled()

Gets the value of the attribute: ADVANCED_QUERY_ENABLED. Indicates if advanced query capabilities are enabled.

Supported API: false

Returns:

boolean

setAdvancedQueryEnabled

public void setAdvancedQueryEnabled(boolean a_AdvancedQueryEnabled)

Sets the value of the attribute: ADVANCED_QUERY_ENABLED. Indicates if advanced query capabilities are enabled.

Supported API: false

Parameters:

a_AdvancedQueryEnabled -