FrankChen021 commented on code in PR #13071:
URL: https://github.com/apache/druid/pull/13071#discussion_r990607549
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processing/src/main/java/org/apache/druid/query/Query.java:
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@@ -96,64 +97,53 @@
DateTimeZone getTimezone();
/**
- * Use {@link #getQueryContext()} instead.
+ * Returns the context as an (immutable) map.
*/
- @Deprecated
Map<String, Object> getContext();
/**
- * Returns QueryContext for this query. This type distinguishes between user
provided, system default, and system
- * generated query context keys so that authorization may be employed
directly against the user supplied context
- * values.
- *
- * This method is marked @Nullable, but is only so for backwards
compatibility with Druid versions older than 0.23.
- * Callers should check if the result of this method is null, and if so,
they are dealing with a legacy query
- * implementation, and should fall back to using {@link #getContext()} and
{@link #withOverriddenContext(Map)} to
- * manipulate the query context.
- *
- * Note for query context serialization and deserialization.
- * Currently, once a query is serialized, its queryContext can be different
from the original queryContext
- * after the query is deserialized back. If the queryContext has any {@link
QueryContext#defaultParams} or
- * {@link QueryContext#systemParams} in it, those will be found in {@link
QueryContext#userParams}
- * after it is deserialized. This is because {@link BaseQuery#getContext()}
uses
- * {@link QueryContext#getMergedParams()} for serialization, and queries
accept a map for deserialization.
+ * Returns the query context as a {@link QueryContext}, which provides
+ * convenience methods for accessing typed context values. The returned
+ * instance is a view on top of the context provided by {@link
#getContext()}.
+ * <p>
+ * The default implementation is for backward compatibility. Derived classes
should
+ * store and return the {@link QueryContext} directly.
*/
- @Nullable
- default QueryContext getQueryContext()
+ default QueryContext context()
{
- return null;
+ return QueryContext.of(getContext());
}
/**
* Get context value and cast to ContextType in an unsafe way.
*
- * For safe conversion, it's recommended to use following methods instead
+ * For safe conversion, it's recommended to use following methods instead:
+ * <p>
+ * {@link QueryContext#getBoolean(String)} <br/>
+ * {@link QueryContext#getString(String)} <br/>
+ * {@link QueryContext#getInt(String)} <br/>
+ * {@link QueryContext#getLong(String)} <br/>
+ * {@link QueryContext#getFloat(String)} <br/>
+ * {@link QueryContext#getEnum(String, Class, Enum)} <br/>
+ * {@link QueryContext#getHumanReadableBytes(String, HumanReadableBytes)}
*
- * {@link QueryContext#getAsBoolean(String)}
- * {@link QueryContext#getAsString(String)}
- * {@link QueryContext#getAsInt(String)}
- * {@link QueryContext#getAsLong(String)}
- * {@link QueryContext#getAsFloat(String, float)}
- * {@link QueryContext#getAsEnum(String, Class, Enum)}
- * {@link QueryContext#getAsHumanReadableBytes(String, HumanReadableBytes)}
+ * @deprecated use {@code queryContext().get<Type>()} instead
*/
+ @Deprecated
+ @SuppressWarnings("unchecked")
@Nullable
default <ContextType> ContextType getContextValue(String key)
{
- if (getQueryContext() == null) {
- return null;
- } else {
- return (ContextType) getQueryContext().get(key);
- }
+ return (ContextType) context().get(key);
}
+ /**
+ * @deprecated use {@code queryContext().getBoolean()} instead.
+ */
+ @Deprecated
default boolean getContextBoolean(String key, boolean defaultValue)
Review Comment:
There's still a reference in `SinkQuerySegmentWalker` to this deprecated
interface
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