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https://issues.apache.org/jira/browse/LOG4J2-1930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gary Gregory closed LOG4J2-1930.
--------------------------------
Resolution: Fixed
Fix Version/s: 2.9
In Git master.
> Add forEach() methods to org.apache.logging.log4j.message.MapMessage
> --------------------------------------------------------------------
>
> Key: LOG4J2-1930
> URL: https://issues.apache.org/jira/browse/LOG4J2-1930
> Project: Log4j 2
> Issue Type: New Feature
> Components: API
> Reporter: Gary Gregory
> Assignee: Gary Gregory
> Fix For: 2.9
>
>
> Add {{forEach()}} methods to {{org.apache.logging.log4j.message.MapMessage}}
> that delegate to the internal {{ReadOnlyStringMap}}. This avoids call sites
> making a copy of the map by calling {{MapMessage.getData()}}.
> {code:java}
> /**
> * Performs the given action for each key-value pair in this data
> structure
> * until all entries have been processed or the action throws an
> exception.
> * <p>
> * Some implementations may not support structural modifications (adding
> new elements or removing elements) while
> * iterating over the contents. In such implementations, attempts to add
> or remove elements from the
> * {@code BiConsumer}'s {@link BiConsumer#accept(Object, Object)} accept}
> method may cause a
> * {@code ConcurrentModificationException} to be thrown.
> * </p>
> *
> * @param action The action to be performed for each key-value pair in
> this collection
> * @param <V> type of the value
> * @throws java.util.ConcurrentModificationException some implementations
> may not support structural modifications
> * to this data structure while iterating over the contents with
> {@link #forEach(BiConsumer)} or
> * {@link #forEach(TriConsumer, Object)}.
> * @see ReadOnlyStringMap#forEach(BiConsumer)
> * @since 2.9
> */
> public <V> void forEach(final BiConsumer<String, ? super V> action) {
> data.forEach(action);
> }
> /**
> * Performs the given action for each key-value pair in this data
> structure
> * until all entries have been processed or the action throws an
> exception.
> * <p>
> * The third parameter lets callers pass in a stateful object to be
> modified with the key-value pairs,
> * so the TriConsumer implementation itself can be stateless and
> potentially reusable.
> * </p>
> * <p>
> * Some implementations may not support structural modifications (adding
> new elements or removing elements) while
> * iterating over the contents. In such implementations, attempts to add
> or remove elements from the
> * {@code TriConsumer}'s {@link TriConsumer#accept(Object, Object,
> Object) accept} method may cause a
> * {@code ConcurrentModificationException} to be thrown.
> * </p>
> *
> * @param action The action to be performed for each key-value pair in
> this collection
> * @param state the object to be passed as the third parameter to each
> invocation on the specified
> * triconsumer
> * @param <V> type of the value
> * @param <S> type of the third parameter
> * @throws java.util.ConcurrentModificationException some implementations
> may not support structural modifications
> * to this data structure while iterating over the contents with
> {@link #forEach(BiConsumer)} or
> * {@link #forEach(TriConsumer, Object)}.
> * @see ReadOnlyStringMap#forEach(TriConsumer, Object)
> * @since 2.9
> */
> public <V, S> void forEach(final TriConsumer<String, ? super V, S>
> action, final S state) {
> data.forEach(action, state);
> }
> {code}
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