uk.ac.ed.epcc.safe.accounting.selector

Class SelectClause<T>

java.lang.Object

uk.ac.ed.epcc.safe.accounting.selector.SelectClause<T>

Type Parameters:

T -

All Implemented Interfaces:

RecordSelector

public final class SelectClause<T>
extends java.lang.Object
implements RecordSelector

Encodes a relationship between a property and a data value. This is used as a template to create select filters from a concrete Factory. A null MatchCondition is used to signify an equality match. A null PropExpression should match no records

Author:

spb

Field Summary

Fields

Modifier and Type	Field and Description
T	data
uk.ac.ed.epcc.webapp.jdbc.filter.MatchCondition	match
PropExpression<T>	tag

Constructor Summary

Constructors

Constructor and Description
SelectClause() Create a non matching clause
SelectClause(PropertyTag<T> tag, uk.ac.ed.epcc.webapp.jdbc.filter.MatchCondition m, PropertyContainer map)
SelectClause(PropertyTag<T> tag, PropertyContainer map)
SelectClause(PropertyTag<T> tag, T data)
SelectClause(PropExpression<T> tag, uk.ac.ed.epcc.webapp.jdbc.filter.MatchCondition m, T data)

Method Summary

Methods

Modifier and Type	Method and Description
SelectClause<T>	copy() return a copy of the RecordSelector.
boolean	equals(java.lang.Object obj)
int	hashCode()
java.lang.String	toString()
<R> R	visit(SelectorVisitor<R> visitor)

Methods inherited from class java.lang.Object

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

Field Detail

tag

public final PropExpression<T> tag

data

public final T data

match

public final uk.ac.ed.epcc.webapp.jdbc.filter.MatchCondition match

Constructor Detail

SelectClause

public SelectClause(PropertyTag<T> tag,
            T data)

SelectClause

public SelectClause(PropertyTag<T> tag,
            PropertyContainer map)
             throws InvalidPropertyException

Throws:

InvalidPropertyException

SelectClause

public SelectClause(PropExpression<T> tag,
            uk.ac.ed.epcc.webapp.jdbc.filter.MatchCondition m,
            T data)

SelectClause

public SelectClause(PropertyTag<T> tag,
            uk.ac.ed.epcc.webapp.jdbc.filter.MatchCondition m,
            PropertyContainer map)
             throws InvalidPropertyException

Throws:

InvalidPropertyException

SelectClause

public SelectClause()

Create a non matching clause

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

visit

public <R> R visit(SelectorVisitor<R> visitor)
        throws java.lang.Exception

Specified by:

visit in interface RecordSelector

Throws:

java.lang.Exception

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

copy

public SelectClause<T> copy()

Description copied from interface: RecordSelector

return a copy of the RecordSelector. This may be a self reference if the object is immutable. Normally implementing sub-classes should be immutable (calling copy on any RecordSelector sub-arguments. In this case the return type should be narrowed to the sub-type.

Specified by:

copy in interface RecordSelector

Returns:

RecordSelector