uk.ac.ed.epcc.webapp.jdbc.expr

Class DateSQLValue

java.lang.Object

uk.ac.ed.epcc.webapp.jdbc.expr.DateSQLValue

All Implemented Interfaces:

GroupingSQLValue<java.util.Date>, NestedSQLValue<java.util.Date,java.lang.Number>, SQLValue<java.util.Date>, Targetted<java.util.Date>

public class DateSQLValue
extends java.lang.Object
implements NestedSQLValue<java.util.Date,java.lang.Number>

A SQLValue that converts a millisecond value into a Date.

Constructor Summary

Constructors

Constructor and Description
DateSQLValue(SQLValue<? extends java.lang.Number> a)
DateSQLValue(SQLValue<? extends java.lang.Number> a, long res)

Method Summary

Modifier and Type	Method and Description
int	add(java.lang.StringBuilder sb, boolean qualify) Add the expression to a StringBuilder
SQLValue<java.lang.Number>	getNested()
java.util.List<PatternArgument>	getParameters(java.util.List<PatternArgument> list) Add parameters for this value to a list.
java.lang.Class<java.util.Date>	getTarget() Get the type of the returned object as far as it is known.
java.util.Date	makeObject(java.sql.ResultSet rs, int pos) Extract a result of the expression from a ResultSet into an object of the specified type.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.ed.epcc.webapp.jdbc.expr.NestedSQLValue

addGroup, checkContentsCanGroup, getGroupParameters, getRequiredFilter, groupingIsomorphic

Constructor Detail

DateSQLValue

public DateSQLValue(SQLValue<? extends java.lang.Number> a)

DateSQLValue

public DateSQLValue(SQLValue<? extends java.lang.Number> a,
                    long res)

Method Detail

getTarget

public java.lang.Class<java.util.Date> getTarget()

Description copied from interface: Targetted

Get the type of the returned object as far as it is known. Normally this should be the erasure type corresponding to T.

Specified by:

getTarget in interface Targetted<java.util.Date>

Returns:

Class object for return type

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

add

public int add(java.lang.StringBuilder sb,
               boolean qualify)

Description copied from interface: SQLValue

Add the expression to a StringBuilder

Specified by:

add in interface SQLValue<java.util.Date>

Parameters:

sb - StringBuilder to modify

qualify - boolean should fields be qualified with the table name

Returns:

number of fields added

getParameters

public java.util.List<PatternArgument> getParameters(java.util.List<PatternArgument> list)

Description copied from interface: SQLValue

Add parameters for this value to a list.

Specified by:

getParameters in interface SQLValue<java.util.Date>

Parameters:

list - to modify

Returns:

modified list of parameter objects

makeObject

public java.util.Date makeObject(java.sql.ResultSet rs,
                                 int pos)
                          throws DataException,
                                 java.sql.SQLException

Description copied from interface: SQLValue

Extract a result of the expression from a ResultSet into an object of the specified type. Note that this method is also used to extract the result of functions over the result type.

Specified by:

makeObject in interface SQLValue<java.util.Date>

Parameters:

rs - ResultSet

Returns:

produced object

Throws:

DataException

java.sql.SQLException

getNested

public SQLValue<java.lang.Number> getNested()

Specified by:

getNested in interface NestedSQLValue<java.util.Date,java.lang.Number>