Package wt.query

Class DateExpression

java.lang.Object

wt.query.ConstantExpression

wt.query.DateExpression

All Implemented Interfaces:

Externalizable, Serializable, ColumnExpression, wt.query.Expression, OrderByExpression, RelationalExpression

public class DateExpression
extends ConstantExpression
implements Externalizable

This class represents a date constant in a SQL statement. This subclass of ConstantExpression is necessary to provide the special handling for date values. The java date values are converted to a string representation and used within a TO_DATE() SQL function when used in SQL statements.

Supported API: true

Extendable: false

See Also:

• Serialized Form

Field Summary

Fields inherited from interface wt.query.ColumnExpression

ADVANCED_QUERY, ADVANCED_QUERY_ENABLED, COLUMN_ALIAS, JAVA_TYPE

Fields inherited from interface wt.query.Expression

FROM_COUNT

Fields inherited from interface wt.query.RelationalExpression

BIND_PARAMETER

Method Summary

Modifier and Type	Method	Description
static ColumnExpression	newExpression(Object a_value, String a_javaType)	Create a new Expression.

Methods inherited from class wt.query.ConstantExpression

getClassAttributes, getColumnAlias, getFromCount, getJavaType, getValue, isAdvancedQuery, isAdvancedQueryEnabled, isEscapeNeeded, isEscapeNeeded, isStringBased, isStringBased, isStringBased, isUnescaped, isUnescapedMatcher, isUseBind, isUseEscape, newExpression, readVersion, setAdvancedQueryEnabled, setColumnAlias, setFromAlias, setUseBind, setUseEscape, toString, unescapedFirstIndex, validate

Methods inherited from class java.lang.Object

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

Method Details

newExpression

public static ColumnExpression newExpression(Object a_value,
 String a_javaType)

Create a new Expression.

Supported API: true

Parameters:

a_value - Specifies the data constant value.

a_javaType - Specifies the Java type of the value.

Returns:

ColumnExpression