828 // FIXME: Should we always include event type? Does it make any sense, except on the custom pages?
829
830 // FIXME: Transform both START_TIME and END_TIME to LIFETIME?
831 // FIXME: Add derived attributes, like a conversion of any THREAD or CLASS attribute? Thread group?
832 /*
833 * Make sure to do the conversions in the right order, so for example a stack trace can be
834 * converted to a top method, which then is converted to a method string.
835 */
836 return attributes.map(a -> a.equals(JfrAttributes.EVENT_THREAD) ? JdkAttributes.EVENT_THREAD_NAME : a)
837 .flatMap(a -> a.equals(JfrAttributes.EVENT_STACKTRACE) ? Stream.of(JdkAttributes.STACK_TRACE_STRING,
838 JdkAttributes.STACK_TRACE_TOP_METHOD_STRING, JdkAttributes.STACK_TRACE_TOP_CLASS_STRING,
839 JdkAttributes.STACK_TRACE_TOP_PACKAGE, JdkAttributes.STACK_TRACE_BOTTOM_METHOD_STRING)
840 : Stream.of(a))
841 .map(a -> a.equals(JdkAttributes.COMPILER_METHOD) ? JdkAttributes.COMPILER_METHOD_STRING : a)
842 // FIXME: String or id?
843 .map(a -> a.equals(JdkAttributes.REC_SETTING_FOR) ? JdkAttributes.REC_SETTING_FOR_NAME : a)
844 .map(a -> a.equals(JdkAttributes.CLASS_DEFINING_CLASSLOADER)
845 ? JdkAttributes.CLASS_DEFINING_CLASSLOADER_STRING : a)
846 .map(a -> a.equals(JdkAttributes.CLASS_INITIATING_CLASSLOADER)
847 ? JdkAttributes.CLASS_INITIATING_CLASSLOADER_STRING : a)
848 .filter(a -> a.equals(JfrAttributes.EVENT_TYPE) || (a.getContentType() instanceof RangeContentType)
849 || (a.getContentType().getPersister() != null))
850 .distinct();
851 }
852
853 /**
854 * Returns a value for attribute, firstly by trying to find one in the items, secondly by
855 * creating a default value for some known content types. Returns null if the first two cases
856 * fail.
857 *
858 * @param items
859 * @param attribute
860 * @return a value of type V, or null
861 */
862 @SuppressWarnings("unchecked")
863 private static <V> V findValueForFilter(IItemCollection items, ICanonicalAccessorFactory<V> attribute) {
864 IItem firstItem = ItemCollectionToolkit.stream(items).filter(is -> is.getType().hasAttribute(attribute))
865 .flatMap(ItemIterableToolkit::stream)
866 .filter(i -> ((IMemberAccessor<V, IItem>) attribute.getAccessor(i.getType())).getMember(i) != null)
867 .findFirst().orElse(null);
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828 // FIXME: Should we always include event type? Does it make any sense, except on the custom pages?
829
830 // FIXME: Transform both START_TIME and END_TIME to LIFETIME?
831 // FIXME: Add derived attributes, like a conversion of any THREAD or CLASS attribute? Thread group?
832 /*
833 * Make sure to do the conversions in the right order, so for example a stack trace can be
834 * converted to a top method, which then is converted to a method string.
835 */
836 return attributes.map(a -> a.equals(JfrAttributes.EVENT_THREAD) ? JdkAttributes.EVENT_THREAD_NAME : a)
837 .flatMap(a -> a.equals(JfrAttributes.EVENT_STACKTRACE) ? Stream.of(JdkAttributes.STACK_TRACE_STRING,
838 JdkAttributes.STACK_TRACE_TOP_METHOD_STRING, JdkAttributes.STACK_TRACE_TOP_CLASS_STRING,
839 JdkAttributes.STACK_TRACE_TOP_PACKAGE, JdkAttributes.STACK_TRACE_BOTTOM_METHOD_STRING)
840 : Stream.of(a))
841 .map(a -> a.equals(JdkAttributes.COMPILER_METHOD) ? JdkAttributes.COMPILER_METHOD_STRING : a)
842 // FIXME: String or id?
843 .map(a -> a.equals(JdkAttributes.REC_SETTING_FOR) ? JdkAttributes.REC_SETTING_FOR_NAME : a)
844 .map(a -> a.equals(JdkAttributes.CLASS_DEFINING_CLASSLOADER)
845 ? JdkAttributes.CLASS_DEFINING_CLASSLOADER_STRING : a)
846 .map(a -> a.equals(JdkAttributes.CLASS_INITIATING_CLASSLOADER)
847 ? JdkAttributes.CLASS_INITIATING_CLASSLOADER_STRING : a)
848 .map(a -> a.equals(JdkAttributes.PARENT_CLASSLOADER)
849 ? JdkAttributes.PARENT_CLASSLOADER_STRING : a)
850 .map(a -> a.equals(JdkAttributes.CLASSLOADER)
851 ? JdkAttributes.CLASSLOADER_STRING : a)
852 .filter(a -> a.equals(JfrAttributes.EVENT_TYPE) || (a.getContentType() instanceof RangeContentType)
853 || (a.getContentType().getPersister() != null))
854 .distinct();
855 }
856
857 /**
858 * Returns a value for attribute, firstly by trying to find one in the items, secondly by
859 * creating a default value for some known content types. Returns null if the first two cases
860 * fail.
861 *
862 * @param items
863 * @param attribute
864 * @return a value of type V, or null
865 */
866 @SuppressWarnings("unchecked")
867 private static <V> V findValueForFilter(IItemCollection items, ICanonicalAccessorFactory<V> attribute) {
868 IItem firstItem = ItemCollectionToolkit.stream(items).filter(is -> is.getType().hasAttribute(attribute))
869 .flatMap(ItemIterableToolkit::stream)
870 .filter(i -> ((IMemberAccessor<V, IItem>) attribute.getAccessor(i.getType())).getMember(i) != null)
871 .findFirst().orElse(null);
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