Class QueryHints


  • public class QueryHints
    extends Object
    Defines the supported JPA query hints
    • Field Detail

      • SPEC_HINT_TIMEOUT

        public static final String SPEC_HINT_TIMEOUT
        The hint key for specifying a query timeout per JPA, which defines the timeout in milliseconds
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      • JAKARTA_SPEC_HINT_TIMEOUT

        public static final String JAKARTA_SPEC_HINT_TIMEOUT
        The hint key for specifying a query timeout per JPA, which defines the timeout in milliseconds
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      • HINT_COMMENT

        public static final String HINT_COMMENT
        The hint key for specifying a comment which is to be embedded into the SQL sent to the database.
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      • HINT_FETCH_SIZE

        public static final String HINT_FETCH_SIZE
        The hint key for specifying a JDBC fetch size, used when executing the resulting SQL.
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      • HINT_CACHEABLE

        public static final String HINT_CACHEABLE
        The hint key for specifying whether the query results should be cached for the next (cached) execution of the "same query".
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      • HINT_CACHE_REGION

        public static final String HINT_CACHE_REGION
        The hint key for specifying the name of the cache region (within Hibernate's query result cache region) to use for storing the query results.
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      • HINT_READONLY

        public static final String HINT_READONLY
        The hint key for specifying that objects loaded into the persistence context as a result of this query execution should be associated with the persistence context as read-only.
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      • HINT_CACHE_MODE

        public static final String HINT_CACHE_MODE
        The hint key for specifying the cache mode (CacheMode) to be in effect for the execution of the hinted query.
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      • HINT_FLUSH_MODE

        public static final String HINT_FLUSH_MODE
        The hint key for specifying the flush mode (FlushMode) to be in effect for the execution of the hinted query.
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        Constant Field Values
      • JAKARTA_HINT_FETCH_GRAPH

        public static final String JAKARTA_HINT_FETCH_GRAPH
        Hint providing a "fetchgraph" EntityGraph. Attributes explicitly specified as AttributeNodes are treated as FetchType.EAGER (via join fetch or subsequent select). Note: Currently, attributes that are not specified are treated as FetchType.LAZY or FetchType.EAGER depending on the attribute's definition in metadata, rather than forcing FetchType.LAZY.
      • JAKARTA_HINT_LOAD_GRAPH

        public static final String JAKARTA_HINT_LOAD_GRAPH
        Hint providing a "loadgraph" EntityGraph. Attributes explicitly specified as AttributeNodes are treated as FetchType.EAGER (via join fetch or subsequent select). Attributes that are not specified are treated as FetchType.LAZY or FetchType.EAGER depending on the attribute's definition in metadata
      • JAKARTA_HINT_FETCHGRAPH

        public static final String JAKARTA_HINT_FETCHGRAPH
        Hint providing a "fetchgraph" EntityGraph. Attributes explicitly specified as AttributeNodes are treated as FetchType.EAGER (via join fetch or subsequent select). Note: Currently, attributes that are not specified are treated as FetchType.LAZY or FetchType.EAGER depending on the attribute's definition in metadata, rather than forcing FetchType.LAZY.
      • JAKARTA_HINT_LOADGRAPH

        public static final String JAKARTA_HINT_LOADGRAPH
        Hint providing a "loadgraph" EntityGraph. Attributes explicitly specified as AttributeNodes are treated as FetchType.EAGER (via join fetch or subsequent select). Attributes that are not specified are treated as FetchType.LAZY or FetchType.EAGER depending on the attribute's definition in metadata
    • Constructor Detail

      • QueryHints

        protected QueryHints()
    • Method Detail

      • getDefinedHints

        public static Set<String> getDefinedHints()