uk.ac.ed.epcc.safe.accounting.policy

Class GridPropertyPolicy

java.lang.Object

uk.ac.ed.epcc.safe.accounting.update.AbstractPropertyContainerUpdater

uk.ac.ed.epcc.safe.accounting.policy.BasePolicy

uk.ac.ed.epcc.safe.accounting.policy.BaseUsageRecordPolicy

uk.ac.ed.epcc.safe.accounting.policy.GridPropertyPolicy

All Implemented Interfaces:

PropertyContainerPolicy, PropertyContainerUpdater, UsageRecordPolicy

public class GridPropertyPolicy
extends BaseUsageRecordPolicy

Policy to define standard properties used to generate OGF-Usage records This policy provides some standard mappings which can be overidden/extended by using an ExpressionPropertyPolicy

Author:

spb

Constructor Summary

Constructors

Constructor and Description
GridPropertyPolicy()

Method Summary

Methods

Modifier and Type	Method and Description
protected <T> void	ADD_DERIVATON(PropExpressionMap map, PropertyTag<T> p2, PropExpression<T> p1)
protected <T> void	ADD_REMOTE(PropExpressionMap map, PropertyTag<T> local, PropertyTag<T> remote)
PropExpressionMap	getDerivedProperties(PropExpressionMap previous) return a set of derived property definitions.
PropertyFinder	initFinder(uk.ac.ed.epcc.webapp.AppContext ctx, PropertyFinder prev, java.lang.String table) Generate a PropertyFinder that will find any PropertyTag generated by this class.
uk.ac.ed.epcc.webapp.jdbc.table.TableSpecification	modifyDefaultTableSpecification(uk.ac.ed.epcc.webapp.AppContext conn, uk.ac.ed.epcc.webapp.jdbc.table.TableSpecification t, java.lang.String tagName) Modify the default table specification if appropriate A null specification denotes that a table should not be auto-created.

Methods inherited from class uk.ac.ed.epcc.safe.accounting.policy.BaseUsageRecordPolicy

allowReplace, postCreate, preDelete

Methods inherited from class uk.ac.ed.epcc.safe.accounting.policy.BasePolicy

parse

Methods inherited from class uk.ac.ed.epcc.safe.accounting.update.AbstractPropertyContainerUpdater

endParse, startParse, unique

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.ed.epcc.safe.accounting.update.PropertyContainerPolicy

parse

Methods inherited from interface uk.ac.ed.epcc.safe.accounting.update.PropertyContainerUpdater

endParse, startParse

Constructor Detail

GridPropertyPolicy

public GridPropertyPolicy()

Method Detail

initFinder

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

Description copied from interface: PropertyContainerUpdater

Generate a PropertyFinder that will find any PropertyTag generated by this class. This call should be treated as a secondary constructor and should be called before any other method from this interface.

All properties defined at run-time should have their PropertyTag objects constructed by the time the first call to this method returns. As some parsers properties will generate different things depending on the other properties already in scope this method is passed a PropertyFinder for any properties that may already be in scope. This will include any default parameters specified when the data was uploaded and any properties generated from the database meta-data. Though it is perfectly legal to return a PropertyFinder that returns a superset of the generated properties the only requirement is that the returned finder can find any property that this classes parse method may actually generate values for. So Normally the contents of the super-finder are not included in the result unless these values are actually generated by the parse. If values are generated then a MultiFinder can be populated with the PropertyRegistrys from the generated properties

prev - PropertyFinder for the higher levels in the call chain.

table - String name of the destination table in case per-table customisation is needed

Returns:

PropertyFinder or null

ADD_DERIVATON

protected <T> void ADD_DERIVATON(PropExpressionMap map,
                     PropertyTag<T> p2,
                     PropExpression<T> p1)

ADD_REMOTE

protected <T> void ADD_REMOTE(PropExpressionMap map,
                  PropertyTag<T> local,
                  PropertyTag<T> remote)

getDerivedProperties

public PropExpressionMap getDerivedProperties(PropExpressionMap previous)

Description copied from interface: PropertyContainerUpdater

return a set of derived property definitions. Each derived property is defined in terms of a simple expression over other properties (that may themselves be derived properties).

Definitions are allowed for properties that are also generated directly in the parse phase. In this case the parse value should always be used by preference and the derived definition only provides a fall-back implementation if the parse value is unavailable. For example if not persisted in the database layer. This allows one parser/policy to specify a default implementation as a derived property definition which is then overridden by having the same property generated in a parse method of a different policy/parser

Specified by:

getDerivedProperties in interface PropertyContainerUpdater

Overrides:

getDerivedProperties in class AbstractPropertyContainerUpdater

Parameters:

previous - Previous definitions

Returns:

Map modified map

modifyDefaultTableSpecification

public uk.ac.ed.epcc.webapp.jdbc.table.TableSpecification modifyDefaultTableSpecification(uk.ac.ed.epcc.webapp.AppContext conn,
                                                                                 uk.ac.ed.epcc.webapp.jdbc.table.TableSpecification t,
                                                                                 java.lang.String tagName)

Description copied from interface: PropertyContainerUpdater

Modify the default table specification if appropriate A null specification denotes that a table should not be auto-created. Most work is usually done by the parser (modifying a blank or minimal specification) A policy may alo make changes if it is pre-configured before the table is created. Normally policies are added to an existing table where this method is not relevant.

Specified by:

modifyDefaultTableSpecification in interface PropertyContainerUpdater

Overrides:

modifyDefaultTableSpecification in class AbstractPropertyContainerUpdater

Parameters:

conn - AppContext

t - TableSpecification or null

Returns:

modified TableSpecification