alessandrobenedetti commented on a change in pull request #357: [SOLR-12238]
Synonym Queries boost by payload
URL: https://github.com/apache/lucene-solr/pull/357#discussion_r374033185
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File path: lucene/core/src/java/org/apache/lucene/util/AttributeSource.java
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@@ -171,6 +171,23 @@ public boolean hasNext() {
return implInterfaces.get(clazz);
}
+ /**
+ * Returns the instance of the passed in AttributeImpl contained in this
AttributeSource
+ * <p>
+ * The caller must pass in a Class<? extends AttributeImpl> value.
+ *
+ * @return instance of the passed in AttributeImpl, or {@code null} if this
AttributeSource
+ * does not contain the AttributeImpl. It is recommended to always
use
+ * {@link #addAttributeImpl} even in consumers of TokenStreams,
because you cannot
+ * know if a specific TokenStream really uses a specific
AttributeImpl.
+ * {@link #addAttributeImpl} will automatically make the attribute
impl available.
+ * If you want to only use the attribute , if it is available (to
optimize
+ * consuming), use {@link #hasAttribute}.
+ */
+ public final <T extends AttributeImpl> T getAttributeImpl(Class<T> attClass)
{
+ return attClass.cast(attributeImpls.get(attClass));
+ }
+
Review comment:
I am pretty sure , when I was debugging that at the moment that is the only
way to get the Payload attributes (they seem to be there just in the attr impl
list.
But I can double check this!
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