Log4j Version 1.2.7: Uses of Class org.apache.log4j.spi.Filter

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## Uses of Class
org.apache.log4j.spi.Filter

Packages that use Filter
org.apache.log4j | The main log4j package.
org.apache.log4j.spi | Contains part of the System Programming Interface (SPI) needed to extend log4j.
org.apache.log4j.varia | Contains various appenders, filters and other odds and ends.

Uses of Filter in org.apache.log4j

Fields in org.apache.log4j declared as Filter
`protected Filter` | `AppenderSkeleton.headFilter` The first filter in the filter chain.
`protected Filter` | `AppenderSkeleton.tailFilter` The last filter in the filter chain.

Methods in org.apache.log4j that return Filter
`Filter` | `AppenderSkeleton.getFilter()` Returns the head Filter.
`Filter` | `AppenderSkeleton.getFirstFilter()` Return the first filter in the filter chain for this Appender.
`Filter` | `Appender.getFilter()` Returns the head Filter.

Methods in org.apache.log4j with parameters of type Filter
`void` | `AppenderSkeleton.addFilter(Filter newFilter)` Add a filter to end of the filter list.
`void` | `Appender.addFilter(Filter newFilter)` Add a filter to the end of the filter list.

Uses of Filter in org.apache.log4j.spi

Fields in org.apache.log4j.spi declared as Filter
`Filter` | `Filter.next` Points to the next filter in the filter chain.

Uses of Filter in org.apache.log4j.varia

Subclasses of Filter in org.apache.log4j.varia
`class` | `DenyAllFilter` This filter drops all logging events.
`class` | `LevelMatchFilter` This is a very simple filter based on level matching.
`class` | `LevelRangeFilter` This is a very simple filter based on level matching, which can be used to reject messages with priorities outside a certain range.
`class` | `StringMatchFilter` This is a very simple filter based on string matching.

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