uk.ac.ed.epcc.safe.accounting.expr

Class PropExpressionMap

java.lang.Object

uk.ac.ed.epcc.safe.accounting.expr.PropExpressionMap

public final class PropExpressionMap
extends java.lang.Object

Class that holds a set of PropertyTag definitions in terms of PropExpressions. This is essentially a wrapper around a Map object with additional run-time type checking.

Author:

spb

Constructor Summary

Constructors

Constructor and Description
PropExpressionMap()
PropExpressionMap(PropExpressionMap orig)

Method Summary

Methods

Modifier and Type	Method and Description
void	addConfigProperty(uk.ac.ed.epcc.webapp.AppContext ctx, PropertyFinder prev, java.lang.String table, PropertyTag tag, java.lang.String def)
void	addConfigProperty(uk.ac.ed.epcc.webapp.AppContext ctx, PropertyRegistry reg, PropertyFinder prev, java.lang.String table, java.lang.String name, java.lang.String def) Register a new definition is the config service
void	addFromProperties(PropertyFinder prev, uk.ac.ed.epcc.webapp.AppContext ctx, java.lang.String table)
void	addFromProperties(PropertyRegistry reg, PropertyFinder prev, uk.ac.ed.epcc.webapp.AppContext ctx, java.lang.String table) Populate the PropExpressionMap from configuration properties.
void	clear()
boolean	containsKey(PropertyTag t)
<T> PropExpression<? extends T>	get(PropertyTag<T> key)
PropExpressionMap	getAllFrom(PropExpressionMap m)
java.util.Set<PropertyTag>	keySet()
<T> void	peer(PropertyTag<T> a, PropertyTag<T> b) alias two property tags to each other.
<T> void	put(PropertyTag<T> key, PropExpression<? extends T> expr)
<T> void	remove(PropertyTag<T> key)
void	removeConfigProperty(uk.ac.ed.epcc.webapp.AppContext ctx, java.lang.String table, PropertyTag tag)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

PropExpressionMap

public PropExpressionMap()

PropExpressionMap

public PropExpressionMap(PropExpressionMap orig)

Method Detail

put

public <T> void put(PropertyTag<T> key,
           PropExpression<? extends T> expr)
         throws PropertyCastException

Throws:

PropertyCastException

peer

public <T> void peer(PropertyTag<T> a,
            PropertyTag<T> b)
          throws PropertyCastException

alias two property tags to each other. Its good practice to peer equivalent tags as otherwise care needs to be taken to ensure the primary tag resolves ahead of the secondary.

Throws:

PropertyCastException

Parameters:

a -

b -

remove

public <T> void remove(PropertyTag<T> key)

get

public <T> PropExpression<? extends T> get(PropertyTag<T> key)

getAllFrom

public PropExpressionMap getAllFrom(PropExpressionMap m)

keySet

public java.util.Set<PropertyTag> keySet()

containsKey

public boolean containsKey(PropertyTag t)

size

public int size()

addFromProperties

public void addFromProperties(PropertyRegistry reg,
                     PropertyFinder prev,
                     uk.ac.ed.epcc.webapp.AppContext ctx,
                     java.lang.String table)

Populate the PropExpressionMap from configuration properties. This is under the control of java properties of the form properties.table-name.name=prop-expression

Parameters:

reg - PropertyRegistry to add definitions to

prev - PropertyFinder to use in parse

ctx - AppContext

table - table tag to identify property definitions

addFromProperties

public void addFromProperties(PropertyFinder prev,
                     uk.ac.ed.epcc.webapp.AppContext ctx,
                     java.lang.String table)

addConfigProperty

public void addConfigProperty(uk.ac.ed.epcc.webapp.AppContext ctx,
                     PropertyRegistry reg,
                     PropertyFinder prev,
                     java.lang.String table,
                     java.lang.String name,
                     java.lang.String def)
                       throws ParseException

Register a new definition is the config service

Throws:

ParseException

Parameters:

ctx - AppContext

reg -

prev - PropertyFinder to use in parse

table -

name - String name of new definition

def - String to parse for prop-expression

addConfigProperty

public void addConfigProperty(uk.ac.ed.epcc.webapp.AppContext ctx,
                     PropertyFinder prev,
                     java.lang.String table,
                     PropertyTag tag,
                     java.lang.String def)
                       throws ParseException

Throws:

ParseException

removeConfigProperty

public void removeConfigProperty(uk.ac.ed.epcc.webapp.AppContext ctx,
                        java.lang.String table,
                        PropertyTag tag)

clear

public void clear()