wt.query
Interface RelationalExpression

All Superinterfaces:

Expression

All Known Subinterfaces:

ColumnExpression

All Known Implementing Classes:

ArrayExpression, ArrayTableExpression, ClassAttribute, ColumnListExpression, ConstantExpression, FixedLengthStringExpression, KeywordExpression, RangeExpression, SQLFunction, SubSelectExpression, TableColumn

public interface RelationalExpression

extends Expression

This interface defines an expression that can be used as an operand in a relational expression in a SQL WHERE clause.

Supported API: true

Extendable: false

Field Summary

static String

BIND_PARAMETER Label for the attribute; Returns a bind parameter for this expression (if supported).

Fields inherited from interface wt.query.Expression

FROM_COUNT

Method Summary

Object	getBindParameter() Gets the value of the attribute: BIND_PARAMETER.
List	getClassAttributes() Supported API: false
String	getExpression(boolean a_useBind, Vector a_tableInfos, Vector a_aliases, boolean a_outerJoin) Return string representation of this expression.

Methods inherited from interface wt.query.Expression

getFromCount, setFromAlias, validate

Field Detail

BIND_PARAMETER

public static final String BIND_PARAMETER

Label for the attribute; Returns a bind parameter for this expression (if supported).

Supported API: false

See Also:

Constant Field Values

Method Detail

getBindParameter

public Object getBindParameter()
                        throws WTException

Gets the value of the attribute: BIND_PARAMETER. Returns a bind parameter for this expression (if supported).

Supported API: false

Returns:

Object

Throws:

WTException

getExpression

public String getExpression(boolean a_useBind,
                            Vector a_tableInfos,
                            Vector a_aliases,
                            boolean a_outerJoin)
                     throws QueryException

Return string representation of this expression.

Supported API: false

Parameters:

a_useBind - Indicates that bind variables should be used for this expression.

a_tableInfos -

a_aliases -

a_outerJoin - Indicates that outer join syntax should be used for this expression.

Returns:

String

Throws:

QueryException

getClassAttributes

public List getClassAttributes()

Supported API: false

Returns:

List