ariba.ui.meta.core
Class Context

java.lang.Object
  ariba.ui.meta.core.Context

All Implemented Interfaces:

Extensible

Direct Known Subclasses:

ObjectMeta.ObjectMetaContext

public class Context
extends java.lang.Object
implements Extensible

Context represents a stack of assignments (e.g. class=User, field=birthDay, operation=edit) The current set of assignments can be retrieved via values(). The current values are run against the Meta rule set to compute the effective PropertyMap (e.g. visible:true, editable:true, component:AWTextField). Some rule evaluations result in *chaining* -- where additional assignments that are "implied" by the current assignments are applied, (resulting in a revised computation of the current PropertyMap, and possible further chaining). (e.g. field=birthDay may result in type=Date which may result in component:DatePicker) Assignments can be scoped and popped (push(), set(key, value); ...; pop()). The actual computation of rule matches is cached so once a "path" down the context tree has been exercized subsequent matching traversals (even by other threads/users) is fast.

Nested Class Summary

static class	Context.AssignmentInfo An externally intelligible snapshot of an assignment in a InspectorInfo Context snapshot for use by Inspectors / Editors.
static interface	Context.AssignmentRecord
static class	Context.FieldValue_ContextPropertyAccessor
static class	Context.InspectorInfo An externally intelligible snapshot of current Context state for use by Inspectors / Editors.
class	Context.PropertyAccessor PropertyAccessor provides a handle for FieldValue lookups on the Context properties that should lookup and resolve property values.
static class	Context.Snapshot

Field Summary

static Meta.PropertyMap

EmptyMap

Constructor Summary

Context(Meta meta)

Method Summary

Meta.PropertyMap	allProperties()
static java.util.Map<Rule.AssignmentSource,java.util.List<AWDebugTrace.Assignment>>	assignmentMap(Context.AssignmentRecord arec)
boolean	booleanPropertyForKey(java.lang.String key, boolean defaultVal)
boolean	currentRecordPathMatches(Context.AssignmentRecord rec)
boolean	currentRecordPathMatches(Context.InspectorInfo other)
void	debug()
java.lang.String	debugString()
java.lang.Object	debugTracePropertyProvider()
static java.lang.Object	elementOrFirst(java.lang.Object listOrElement)
java.util.Map	extendedFields() Returns the Map in which the dynamically added fields reside.
java.util.List	listPropertyForKey(java.lang.String key)
void	merge(java.lang.String key, java.lang.Object value)
Meta	meta()
static java.lang.Object	newInnerInstance(java.lang.Class innerClass, java.lang.Object outerInstance)
void	pop()
java.lang.Object	properties()
java.lang.Object	propertyForKey(java.lang.String key)
void	push()
java.lang.Object	pushAndResolve(java.util.Map<java.lang.String,java.lang.Object> contextVals, java.lang.String propertyKey)
java.lang.Object	pushAndResolve(java.util.Map<java.lang.String,java.lang.Object> contextVals, java.lang.String propertyKey, boolean staticResolve)
java.lang.Object	resolveValue(java.lang.Object value)
void	set(java.lang.String key, java.lang.Object value)
void	setScopeKey(java.lang.String key)
Context.Snapshot	snapshot()
java.lang.Object	staticallyResolveValue(java.lang.Object value)
static Context.InspectorInfo	staticContext(Meta meta, Context.AssignmentRecord arec)
static Context.InspectorInfo	staticContext(Meta meta, Context.AssignmentRecord arec, boolean includeSetInfo)
java.util.Map	values()

Methods inherited from class java.lang.Object

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

Field Detail

EmptyMap

public static final Meta.PropertyMap EmptyMap

Constructor Detail

Context

public Context(Meta meta)

Method Detail

push

public void push()

pop

public void pop()

set

public void set(java.lang.String key,
                java.lang.Object value)

merge

public void merge(java.lang.String key,
                  java.lang.Object value)

setScopeKey

public void setScopeKey(java.lang.String key)

meta

public Meta meta()

values

public java.util.Map values()

extendedFields

public java.util.Map extendedFields()

Description copied from interface: Extensible

Returns the Map in which the dynamically added fields reside.

Specified by:

extendedFields in interface Extensible

properties

public java.lang.Object properties()

propertyForKey

public java.lang.Object propertyForKey(java.lang.String key)

listPropertyForKey

public java.util.List listPropertyForKey(java.lang.String key)

booleanPropertyForKey

public boolean booleanPropertyForKey(java.lang.String key,
                                     boolean defaultVal)

allProperties

public Meta.PropertyMap allProperties()

resolveValue

public java.lang.Object resolveValue(java.lang.Object value)

staticallyResolveValue

public java.lang.Object staticallyResolveValue(java.lang.Object value)

pushAndResolve

public java.lang.Object pushAndResolve(java.util.Map<java.lang.String,java.lang.Object> contextVals,
                                       java.lang.String propertyKey,
                                       boolean staticResolve)

pushAndResolve

public java.lang.Object pushAndResolve(java.util.Map<java.lang.String,java.lang.Object> contextVals,
                                       java.lang.String propertyKey)

snapshot

public Context.Snapshot snapshot()

debug

public void debug()

debugString

public java.lang.String debugString()

newInnerInstance

public static java.lang.Object newInnerInstance(java.lang.Class innerClass,
                                                java.lang.Object outerInstance)

elementOrFirst

public static java.lang.Object elementOrFirst(java.lang.Object listOrElement)

assignmentMap

public static java.util.Map<Rule.AssignmentSource,java.util.List<AWDebugTrace.Assignment>> assignmentMap(Context.AssignmentRecord arec)

staticContext

public static Context.InspectorInfo staticContext(Meta meta,
                                                  Context.AssignmentRecord arec)

staticContext

public static Context.InspectorInfo staticContext(Meta meta,
                                                  Context.AssignmentRecord arec,
                                                  boolean includeSetInfo)

debugTracePropertyProvider

public java.lang.Object debugTracePropertyProvider()

currentRecordPathMatches

public boolean currentRecordPathMatches(Context.AssignmentRecord rec)

currentRecordPathMatches

public boolean currentRecordPathMatches(Context.InspectorInfo other)