uk.ac.ed.epcc.webapp.model.data

Class TimestampDateFieldExpression<T extends DataObject>

java.lang.Object

uk.ac.ed.epcc.webapp.model.data.FieldExpression<java.util.Date,T>

uk.ac.ed.epcc.webapp.model.data.TimestampDateFieldExpression<T>

Type Parameters:

T - type of owning object

All Implemented Interfaces:

Accessor<java.util.Date,T>, DateSQLExpression, FilterProvider<T,java.util.Date>, GroupingSQLValue<java.util.Date>, SQLAccessor<java.util.Date,T>, SQLExpression<java.util.Date>, SQLValue<java.util.Date>, FieldSQLExpression<java.util.Date,T>, FieldValue<java.util.Date,T>, Targetted<java.util.Date>

public class TimestampDateFieldExpression<T extends DataObject>
extends FieldExpression<java.util.Date,T>
implements DateSQLExpression, FilterProvider<T,java.util.Date>

FieldExpression that views a numeric field as a date timestamp

Field Summary

Fields inherited from class uk.ac.ed.epcc.webapp.model.data.FieldExpression

filter_type, LOG_FETCH, name, repository, target

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TimestampDateFieldExpression(java.lang.Class<T> target, Repository rep, java.lang.String field)

Method Summary

Modifier and Type	Method and Description
int	add(java.lang.StringBuilder sb, boolean qualify) Add the expression to a StringBuilder
int	addField(java.lang.StringBuilder sb, boolean qualify) add SQLFragment corresponding to the raw database field.
SQLFilter<T>	getFilter(MatchCondition match, java.util.Date val) Create a SQLFilter comparing against the target value
SQLExpression<? extends java.lang.Number>	getMillis() get an SQLExpression for the millisecond value of the date
SQLFilter<T>	getNullFilter(boolean is_null) create a SQLFilter checking if the target value is or is not null.
SQLFilter<T>	getOrderFilter(boolean descending) create a SQLFilter that orders results by the target value.
SQLExpression<? extends java.lang.Number>	getSeconds() get an SQLExpression for the second value of the date
java.util.Date	getValue(Repository.Record r)
boolean	preferSeconds() Would this expression preferentially use seconds
void	setValue(Repository.Record r, java.util.Date value)

Methods inherited from class uk.ac.ed.epcc.webapp.model.data.FieldExpression

canSet, equals, getFieldName, getFilterType, getParameters, getRequiredFilter, getTarget, getValue, hashCode, makeObject, setObject, setValue, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

equals, groupingIsomorphic, hashCode

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

addGroup, checkContentsCanGroup, getGroupParameters

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

getParameters, getRequiredFilter, makeObject

Methods inherited from interface uk.ac.ed.epcc.webapp.Targetted

getTarget

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

getFilterType

Constructor Detail

TimestampDateFieldExpression

protected TimestampDateFieldExpression(java.lang.Class<T> target,
                                       Repository rep,
                                       java.lang.String field)

Method Detail

getValue

public java.util.Date getValue(Repository.Record r)

Specified by:

getValue in class FieldExpression<java.util.Date,T extends DataObject>

setValue

public void setValue(Repository.Record r,
                     java.util.Date value)

Specified by:

setValue in class FieldExpression<java.util.Date,T extends DataObject>

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>

Overrides:

add in class FieldExpression<java.util.Date,T extends DataObject>

Parameters:

sb - StringBuilder to modify

qualify - boolean should fields be qualified with the table name

Returns:

number of fields added

getMillis

public SQLExpression<? extends java.lang.Number> getMillis()

Description copied from interface: DateSQLExpression

get an SQLExpression for the millisecond value of the date

Specified by:

getMillis in interface DateSQLExpression

Returns:

SQLExpression giving milliseconds since epoch

getSeconds

public SQLExpression<? extends java.lang.Number> getSeconds()

Description copied from interface: DateSQLExpression

get an SQLExpression for the second value of the date

Specified by:

getSeconds in interface DateSQLExpression

Returns:

SQLExpression giving seconds since epoch

getFilter

public SQLFilter<T> getFilter(MatchCondition match,
                              java.util.Date val)

Description copied from interface: FilterProvider

Create a SQLFilter comparing against the target value

Specified by:

getFilter in interface FilterProvider<T extends DataObject,java.util.Date>

Returns:

SQLFilter

getNullFilter

public SQLFilter<T> getNullFilter(boolean is_null)
                           throws CannotFilterException

Description copied from interface: FilterProvider

create a SQLFilter checking if the target value is or is not null.

Specified by:

getNullFilter in interface FilterProvider<T extends DataObject,java.util.Date>

Returns:

SQLFilter

Throws:

CannotFilterException

getOrderFilter

public SQLFilter<T> getOrderFilter(boolean descending)
                            throws CannotFilterException

Description copied from interface: FilterProvider

create a SQLFilter that orders results by the target value. This may involve joins so may not be just an OrderFilter though it will contain one.

Specified by:

getOrderFilter in interface FilterProvider<T extends DataObject,java.util.Date>

Returns:

SQLFilter

Throws:

CannotFilterException

preferSeconds

public boolean preferSeconds()

Description copied from interface: DateSQLExpression

Would this expression preferentially use seconds

Specified by:

preferSeconds in interface DateSQLExpression

Returns:

boolean

addField

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

Description copied from interface: FieldValue

add SQLFragment corresponding to the raw database field. Normally the same as SQLValue.add(StringBuilder, boolean)

Specified by:

addField in interface FieldValue<java.util.Date,T extends DataObject>

Returns: