Package org.apache.sling.scripting.sightly.impl.filter

Class AbstractFilter

java.lang.Object

org.apache.sling.scripting.sightly.impl.filter.AbstractFilter

All Implemented Interfaces:

Comparable<Filter>, Filter

Direct Known Subclasses:

FormatFilter, I18nFilter, JoinFilter, URIManipulationFilter, XSSFilter

public abstract class AbstractFilter
extends Object
implements Filter

Field Summary

Fields

Modifier and Type	Field	Description
static Set<ExpressionContext>	NON_PARAMETRIZABLE_CONTEXTS
protected int	priority

Method Summary

Modifier and Type	Method	Description
protected abstract Expression	apply(Expression expression, Map<String,ExpressionNode> options)
Expression	apply(Expression expression, ExpressionContext expressionContext)	Transform the given expression
int	compareTo(Filter o)
boolean	equals(Object obj)
Set<ExpressionContext>	getApplicableContexts()	Provides the applicable contexts for this filter.
Set<String>	getOptions()	Provides the option names this Filter will process.
Set<String>	getRequiredOptions()	Provides the option names that will trigger a filter's execution.
int	hashCode()
int	priority()	The priority with which filters are applied.

Methods inherited from class java.lang.Object

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

Field Detail

priority

protected int priority

NON_PARAMETRIZABLE_CONTEXTS

public static final Set<ExpressionContext> NON_PARAMETRIZABLE_CONTEXTS

Method Detail

priority

public int priority()

Description copied from interface: Filter

The priority with which filters are applied. This establishes order between filters. Filters with lower priority are applied first.

Specified by:

priority in interface Filter

Returns:

an integer representing the filter's priority

compareTo

public int compareTo(Filter o)

Specified by:

compareTo in interface Comparable<Filter>

apply

public Expression apply(Expression expression,
                        ExpressionContext expressionContext)

Description copied from interface: Filter

Transform the given expression

Specified by:

apply in interface Filter

Parameters:

expression - the original expression

expressionContext - the expression's context

Returns:

a transformed expression. If the filter is not applicable to the given expression, then the original expression shall be returned

apply

protected abstract Expression apply(Expression expression,
                                    Map<String,ExpressionNode> options)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

getOptions

public Set<String> getOptions()

Description copied from interface: Filter

Provides the option names this Filter will process.

Specified by:

getOptions in interface Filter

Returns:

a set of option names

getRequiredOptions

public Set<String> getRequiredOptions()

Description copied from interface: Filter

Provides the option names that will trigger a filter's execution.

Specified by:

getRequiredOptions in interface Filter

Returns:

the required options from an expression in order to trigger the filter

getApplicableContexts

public Set<ExpressionContext> getApplicableContexts()

Description copied from interface: Filter

Provides the applicable contexts for this filter.

Specified by:

getApplicableContexts in interface Filter

Returns:

the applicable contexts for this filter