com.sun.javatest
Class CompositeFilter

java.lang.Object
  extended by com.sun.javatest.TestFilter
      extended by com.sun.javatest.CompositeFilter

public class CompositeFilter
extends TestFilter

A filter which uses one or more filters to implement its accept method. This implementation only support immutable composites. The observer messages it sends out are adjusted so that the internal filter that rejected the test is returned, rather than the composite filter itself. This allows observing clients to see which non-composite filter actually rejected the test in question. Composite filters within composite filters should also be transparent to the observer mechanism.


Nested Class Summary
 
Nested classes/interfaces inherited from class com.sun.javatest.TestFilter
TestFilter.Fault, TestFilter.Observer
 
Constructor Summary
CompositeFilter(TestFilter[] filters)
          Construct an unnamed filter composed of the given filters.
CompositeFilter(TestFilter[] filters, I18NResourceBundle bundle, java.lang.String prefix)
          This is the preferred constructor which creates a filter composed of the given filters, with descriptive string from a resource bundle.
 
Method Summary
 boolean accepts(TestDescription td)
          Determines whether a TestDescription should be accepted or rejected by this filter.
 boolean accepts(TestDescription td, TestFilter.Observer o)
          Determines whether a TestDescription should be accepted or rejected by this filter; if rejected, it is reported to the provided observer.
 boolean equals(java.lang.Object tf)
          This implementation will compare the filters in the parameter filter to the ones in this instance.
static boolean equals(TestFilter[] array1, TestFilter[] array2)
          Check if two arrays are equal, using set-equality.
 java.lang.String getDescription()
          Get a description of this filter, as might be used to give more details about this filter than provided by TestFilter.getName().
 TestFilter[] getFilters()
          Return the filters being used internally by this composite.
 java.lang.String getName()
          Get the name of this filter, as might be used to choose of of a set of filters.
 java.lang.String getReason()
          Get the reason why this filter would reject a test, as might be used in reports.
 int hashCode()
           
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

CompositeFilter

public CompositeFilter(TestFilter[] filters,
                       I18NResourceBundle bundle,
                       java.lang.String prefix)
This is the preferred constructor which creates a filter composed of the given filters, with descriptive string from a resource bundle. Inside the given resource bundle, the following keys should provided with the supplied prefix: See the TestFilter class for a description of these values.

An empty set of filters is accepted for convenience, but will result allowing all tests passing through for filtering to be accepted.

Parameters:
filters - The filters that constitute this composite filter. Must never be null.
bundle - The bundle to get the description, name and reason from. Must never be null.
prefix - Prefix with which begins the I18N key for the description, name and reason. Must never be null.
See Also:
TestFilter

CompositeFilter

public CompositeFilter(TestFilter[] filters)
Construct an unnamed filter composed of the given filters. By using an unnamed filter, any clients querying this object for name, description or rejection reason will get a general-purpose string. This is usually acceptable for composites which are operating at a level where messages will never be user-visible.

An empty set of filters is accepted for convienience, but will result allowing all tests passing through for filtering to be accepted.

Parameters:
filters - The filters that constitute this composite filter. Must never be null.
See Also:
CompositeFilter(TestFilter[],I18NResourceBundle,String)
Method Detail

getName

public java.lang.String getName()
Description copied from class: TestFilter
Get the name of this filter, as might be used to choose of of a set of filters. This string should be localized.

Specified by:
getName in class TestFilter
Returns:
the name of this filter

getDescription

public java.lang.String getDescription()
Description copied from class: TestFilter
Get a description of this filter, as might be used to give more details about this filter than provided by TestFilter.getName(). This string should be localized.

Specified by:
getDescription in class TestFilter
Returns:
a description of this filter

getReason

public java.lang.String getReason()
Description copied from class: TestFilter
Get the reason why this filter would reject a test, as might be used in reports. This string should be localized.

Specified by:
getReason in class TestFilter
Returns:
a rejection reason for this filter

accepts

public boolean accepts(TestDescription td)
                throws TestFilter.Fault
Description copied from class: TestFilter
Determines whether a TestDescription should be accepted or rejected by this filter.

Specified by:
accepts in class TestFilter
Parameters:
td - the TestDescription to check
Returns:
true if td should be included in collection; false otherwise.
Throws:
TestFilter.Fault - if an error occurs while trying to determine if this test should be accepted or not.

accepts

public boolean accepts(TestDescription td,
                       TestFilter.Observer o)
                throws TestFilter.Fault
Description copied from class: TestFilter
Determines whether a TestDescription should be accepted or rejected by this filter; if rejected, it is reported to the provided observer.

Overrides:
accepts in class TestFilter
Parameters:
td - The TestDescription to check.
o - An observer, which will be notified if the test is rejected by this filter.
Returns:
true if td should be included in collection; false otherwise.
Throws:
TestFilter.Fault - if an error occurs while trying to determine if this test should be accepted or not.

equals

public boolean equals(java.lang.Object tf)
This implementation will compare the filters in the parameter filter to the ones in this instance. If the parameter is not a CompositeFilter, this test fails immediately. Recursive checks do not occur - meaning that composites inside composites are not checked. An empty set is equivalent to an empty set. This is a element-wise compare only.

Overrides:
equals in class java.lang.Object
Parameters:
tf - The object to be checked for equality with this one
Returns:
true if this object equals the argument object
See Also:
Object.equals(Object)

hashCode

public int hashCode()
Overrides:
hashCode in class java.lang.Object

getFilters

public TestFilter[] getFilters()
Return the filters being used internally by this composite.

Returns:
The filters in use. Zero length array if none. Never null. Shallow copy.

equals

public static boolean equals(TestFilter[] array1,
                             TestFilter[] array2)
Check if two arrays are equal, using set-equality.

Parameters:
array1 - First set of filters; may not be null.
array2 - Second set of filters; may not be null.
Returns:
true of the two arrays of filters are equivalent.


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