791 // FIXME: Should we always include event type? Does it make any sense, except on the custom pages?
792
793 // FIXME: Transform both START_TIME and END_TIME to LIFETIME?
794 // FIXME: Add derived attributes, like a conversion of any THREAD or CLASS attribute? Thread group?
795 /*
796 * Make sure to do the conversions in the right order, so for example a stack trace can be
797 * converted to a top method, which then is converted to a method string.
798 */
799 return attributes.map(a -> a.equals(JfrAttributes.EVENT_THREAD) ? JdkAttributes.EVENT_THREAD_NAME : a)
800 .flatMap(a -> a.equals(JfrAttributes.EVENT_STACKTRACE) ? Stream.of(JdkAttributes.STACK_TRACE_STRING,
801 JdkAttributes.STACK_TRACE_TOP_METHOD_STRING, JdkAttributes.STACK_TRACE_TOP_CLASS_STRING,
802 JdkAttributes.STACK_TRACE_TOP_PACKAGE, JdkAttributes.STACK_TRACE_BOTTOM_METHOD_STRING)
803 : Stream.of(a))
804 .map(a -> a.equals(JdkAttributes.COMPILER_METHOD) ? JdkAttributes.COMPILER_METHOD_STRING : a)
805 // FIXME: String or id?
806 .map(a -> a.equals(JdkAttributes.REC_SETTING_FOR) ? JdkAttributes.REC_SETTING_FOR_NAME : a)
807 .map(a -> a.equals(JdkAttributes.CLASS_DEFINING_CLASSLOADER)
808 ? JdkAttributes.CLASS_DEFINING_CLASSLOADER_STRING : a)
809 .map(a -> a.equals(JdkAttributes.CLASS_INITIATING_CLASSLOADER)
810 ? JdkAttributes.CLASS_INITIATING_CLASSLOADER_STRING : a)
811 .filter(a -> a.equals(JfrAttributes.EVENT_TYPE) || (a.getContentType() instanceof RangeContentType)
812 || (a.getContentType().getPersister() != null))
813 .distinct();
814 }
815
816 /**
817 * Returns a value for attribute, firstly by trying to find one in the items, secondly by
818 * creating a default value for some known content types. Returns null if the first two cases
819 * fail.
820 *
821 * @param items
822 * @param attribute
823 * @return a value of type V, or null
824 */
825 @SuppressWarnings("unchecked")
826 private static <V> V findValueForFilter(IItemCollection items, ICanonicalAccessorFactory<V> attribute) {
827 IItem firstItem = ItemCollectionToolkit.stream(items).filter(is -> is.getType().hasAttribute(attribute))
828 .flatMap(ItemIterableToolkit::stream)
829 .filter(i -> ((IMemberAccessor<V, IItem>) attribute.getAccessor(i.getType())).getMember(i) != null)
830 .findFirst().orElse(null);
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791 // FIXME: Should we always include event type? Does it make any sense, except on the custom pages?
792
793 // FIXME: Transform both START_TIME and END_TIME to LIFETIME?
794 // FIXME: Add derived attributes, like a conversion of any THREAD or CLASS attribute? Thread group?
795 /*
796 * Make sure to do the conversions in the right order, so for example a stack trace can be
797 * converted to a top method, which then is converted to a method string.
798 */
799 return attributes.map(a -> a.equals(JfrAttributes.EVENT_THREAD) ? JdkAttributes.EVENT_THREAD_NAME : a)
800 .flatMap(a -> a.equals(JfrAttributes.EVENT_STACKTRACE) ? Stream.of(JdkAttributes.STACK_TRACE_STRING,
801 JdkAttributes.STACK_TRACE_TOP_METHOD_STRING, JdkAttributes.STACK_TRACE_TOP_CLASS_STRING,
802 JdkAttributes.STACK_TRACE_TOP_PACKAGE, JdkAttributes.STACK_TRACE_BOTTOM_METHOD_STRING)
803 : Stream.of(a))
804 .map(a -> a.equals(JdkAttributes.COMPILER_METHOD) ? JdkAttributes.COMPILER_METHOD_STRING : a)
805 // FIXME: String or id?
806 .map(a -> a.equals(JdkAttributes.REC_SETTING_FOR) ? JdkAttributes.REC_SETTING_FOR_NAME : a)
807 .map(a -> a.equals(JdkAttributes.CLASS_DEFINING_CLASSLOADER)
808 ? JdkAttributes.CLASS_DEFINING_CLASSLOADER_STRING : a)
809 .map(a -> a.equals(JdkAttributes.CLASS_INITIATING_CLASSLOADER)
810 ? JdkAttributes.CLASS_INITIATING_CLASSLOADER_STRING : a)
811 .map(a -> a.equals(JdkAttributes.PARENT_CLASSLOADER)
812 ? JdkAttributes.PARENT_CLASSLOADER_STRING : a)
813 .map(a -> a.equals(JdkAttributes.CLASSLOADER)
814 ? JdkAttributes.CLASSLOADER_STRING : a)
815 .filter(a -> a.equals(JfrAttributes.EVENT_TYPE) || (a.getContentType() instanceof RangeContentType)
816 || (a.getContentType().getPersister() != null))
817 .distinct();
818 }
819
820 /**
821 * Returns a value for attribute, firstly by trying to find one in the items, secondly by
822 * creating a default value for some known content types. Returns null if the first two cases
823 * fail.
824 *
825 * @param items
826 * @param attribute
827 * @return a value of type V, or null
828 */
829 @SuppressWarnings("unchecked")
830 private static <V> V findValueForFilter(IItemCollection items, ICanonicalAccessorFactory<V> attribute) {
831 IItem firstItem = ItemCollectionToolkit.stream(items).filter(is -> is.getType().hasAttribute(attribute))
832 .flatMap(ItemIterableToolkit::stream)
833 .filter(i -> ((IMemberAccessor<V, IItem>) attribute.getAccessor(i.getType())).getMember(i) != null)
834 .findFirst().orElse(null);
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