edu.bonn.cs.sems.impl.context
Class ContextCommons

java.lang.Object
  edu.bonn.cs.sems.impl.context.ContextCommons

All Implemented Interfaces:

Context, java.io.Serializable, java.lang.Comparable<Context>

Direct Known Subclasses:

ContextImpl, ContextRdfImpl

public abstract class ContextCommons
extends java.lang.Object
implements Context

This is a helper superclass providing common helper methods to its subclasses Intended to be a superclass for context interface implementations

Author:

Bihler

See Also:

Serialized Form

Field Summary

static java.util.Comparator<Context>

idComparator Can be used to compare two contexts by Id Typical use is sorting

Fields inherited from interface edu.bonn.cs.sems.model.context.Context

SENSOR_BROWSER_MOBILITY, SENSOR_BROWSER_ORIENTATION, SENSOR_BROWSER_SCREEN_DIMENSION, SENSOR_CONNECTION_SPEED, SENSOR_REGION, SENSOR_TIME_DAY, SENSOR_TIME_DAYOFWEEK, SENSOR_TIME_HOUR, SENSOR_TIME_MINUTE, SENSOR_TIME_MONTH, SENSOR_TIME_YEAR, SENSOR_TIME_ZONE, SENSOR_USER_AGE, SENSOR_USER_GENDER, SENSOR_USER_LANGUAGE

Method Summary

int	compareTo(Context otherObject)
boolean	equals(java.lang.Object o) Compares this Context with another Object
java.lang.String	getDescription() Gets the simple description of the context
Context[]	getFlatContexts() Creates a new context which sensor values are merged from the current one recursively together with the sub contexts' values.
java.util.List<Context>	getFlatContextsAsList() Creates a new context which sensor values are merged from the current one recursively together with the sub contexts' values.
java.lang.String	getId() Gets the id of the context
int	hashCode()
boolean	inContext(Context otherContext) Tests if this context is included in another context

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface edu.bonn.cs.sems.model.context.Context

addSubContext, addValue, getSensors, getSubContexts, getValue, getValues, isExclusiveSubContexts, removeSubContext, removeValue, setExclusiveSubContexts

Field Detail

idComparator

public static final java.util.Comparator<Context> idComparator

Can be used to compare two contexts by Id Typical use is sorting

Method Detail

getId

public java.lang.String getId()

Description copied from interface: Context

Gets the id of the context

Specified by:

getId in interface Context

Returns:

The id

getDescription

public java.lang.String getDescription()

Description copied from interface: Context

Gets the simple description of the context

Specified by:

getDescription in interface Context

Returns:

The description

compareTo

public int compareTo(Context otherObject)

Specified by:

compareTo in interface java.lang.Comparable<Context>

getFlatContexts

public Context[] getFlatContexts()

Description copied from interface: Context

Creates a new context which sensor values are merged from the current one recursively together with the sub contexts' values. If the exclusiveSubContexts flag is set, returns as many contexts as there are sub-contexts

Specified by:

getFlatContexts in interface Context

Returns:

An array of Contexts which do not contain sub contexts

getFlatContextsAsList

public java.util.List<Context> getFlatContextsAsList()

Description copied from interface: Context

Creates a new context which sensor values are merged from the current one recursively together with the sub contexts' values. If the exclusiveSubContexts flag is set, returns as many contexts as there are sub-contexts

Specified by:

getFlatContextsAsList in interface Context

Returns:

A List of Context which do not contain sub contexts. Not thread-save.

inContext

public boolean inContext(Context otherContext)

Description copied from interface: Context

Tests if this context is included in another context

Specified by:

inContext in interface Context

Parameters:

otherContext - The other Context this context is compared against

Returns:

true if this contest is completely included in the other, false otherwise

equals

public boolean equals(java.lang.Object o)

Description copied from interface: Context

Compares this Context with another Object

Specified by:

equals in interface Context

Overrides:

equals in class java.lang.Object

Parameters:

o - Another object, e.g. another Context

Returns:

True, if both contexts contain the same sensors and values

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object