org.apache.openjpa.jdbc.kernel.exps
Class CurrentDate

java.lang.Object
  org.apache.openjpa.jdbc.kernel.exps.AbstractVal
      org.apache.openjpa.jdbc.kernel.exps.Const
          org.apache.openjpa.jdbc.kernel.exps.CurrentDate

All Implemented Interfaces:

Serializable, Val, Constant, Value

 class CurrentDate
extends Const

A literal current DATE/TIME/TIMESTAMP value in a filter.

Author:

Marc Prud'hommeaux

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.openjpa.jdbc.kernel.exps.Const

Const.ConstExpState

Field Summary

Fields inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal

FALSE, TRUE

Fields inherited from interface org.apache.openjpa.jdbc.kernel.exps.Val

ABS_VAL, ARGS_VAL, CMP_EQUAL, COALESCE_VAL, CONCAT_VAL, FORCE_OUTER, GENERALCASE_VAL, INDEXOF_VAL, JOIN_REL, LENGTH_VAL, LOCATE_VAL, LOWER_VAL, MATH_VAL, NULL_CMP, NULLIF_VAL, SIMPLECASE_VAL, SQRT_VAL, SUBSTRING_VAL, TRIM_VAL, UPPER_VAL, VAL, WHENCONDITION_VAL, WHENSCALAR_VAL

Constructor Summary

CurrentDate(Class<? extends Date> type)

Method Summary

void	appendTo(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql, int index) Append the indexth SQL element to the given buffer.
Class<? extends Date>	getType() Return the expected type for this value, or Object if the type is unknown.
Object	getValue(Object[] params) Return the value for this constant given the specified parameters.
Object	load(ExpContext ctx, ExpState state, Result res) Load the data for this value.
void	setImplicitType(Class type) Set the implicit type of the value, based on how it is used in the filter.

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.Const

appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, calculateValue, getMetaData, getSQLValue, getValue, groupBy, initialize, isSQLValueNull, length, orderBy, select, selectColumns, setMetaData

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal

acceptVisit, appendIndex, appendType, getAlias, getId, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, toDataStoreValue

Methods inherited from class java.lang.Object

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

Constructor Detail

CurrentDate

public CurrentDate(Class<? extends Date> type)

Method Detail

getType

public Class<? extends Date> getType()

Description copied from interface: Value

Return the expected type for this value, or Object if the type is unknown.

setImplicitType

public void setImplicitType(Class type)

Description copied from interface: Value

Set the implicit type of the value, based on how it is used in the filter. This method is only called on values who return Object from Value.getType().

load

public Object load(ExpContext ctx,
                   ExpState state,
                   Result res)
            throws SQLException

Description copied from interface: Val

Load the data for this value.

Specified by:

load in interface Val

Overrides:

load in class Const

Throws:

SQLException

getValue

public Object getValue(Object[] params)

Description copied from interface: Constant

Return the value for this constant given the specified parameters.

appendTo

public void appendTo(Select sel,
                     ExpContext ctx,
                     ExpState state,
                     SQLBuffer sql,
                     int index)

Description copied from interface: Val

Append the indexth SQL element to the given buffer.