27698960829

Committed 17 Jun 2026 03:07PM UTC coverage: 26.658% (-0.3%) from 26.963%

Build # 27698960829

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Pull #484

github

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web-flow

Commit Message

Merge 850982949 into 0f6281554

Pull Request Pull Request #484: Space-ref disambiguation: conflict notice, claimants overview, ref-pinned pages

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src/main/java/com/knowledgepixels/nanodash/QueryApiAccess.java

package com.knowledgepixels.nanodash;

import org.apache.commons.lang3.tuple.Pair;
import org.eclipse.rdf4j.model.IRI;
import org.nanopub.extra.services.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

/**
 * Utility class for accessing and managing API queries.
 * Provides methods to retrieve query results, manage query IDs, and fetch the latest versions of nanopublications.
 */
public class QueryApiAccess {

    private QueryApiAccess() {
    }  // no instances allowed

    // Query IDs (full id = RA.../query-name)
    public static final String GET_LATEST_NANOPUBS_FROM_PUBKEYS = "RAe-oA5eSmkCXCALZ99-0k4imnlI74KPqURfhHOmnzo6A/get-latest-nanopubs-from-pubkeys";
    public static final String GET_LATEST_NANOPUBS_FROM_USERID = "RAuy4N1h4vZ1wgBUMvTiWw2y_Y0_5oFYRTwdq-xj2qqNM/get-latest-nanopubs-from-userid";
    public static final String GET_USER_STATS_FROM_PUBKEYS = "RAiCBvPL2hRGzI8g5L68O-C9yEXryC_vG35GdEm5jtH_s/get-user-stats-from-pubkeys";
    public static final String GET_USER_STATS_FROM_USERID = "RA3U23LL3xbNwsu92fAqsKb0kagOud4f9TlRQq3evNJck/get-user-stats-from-userid";
    public static final String GET_TOP_CREATORS_LAST30D = "RAcNvmEiUNUb2a7O4fwRvy2x2BCN640AC880fTzFworr8/get-top-creators-last30d";
    public static final String GET_LATEST_USERS = "RAr27GmRUKQmvPbfmB34N9l9lX-xYK7nQhvOMbQCk3byI/get-latest-users";
    public static final String GET_MOST_RECENT_NANOPUBS = "RAYNg6rfvXIVvJY2u8oS0EEjxnVvimLLVZG1rOar_nWIY/get-most-recent-nanopubs";
    public static final String GET_PUBLISHER_VERSION = "RAPGhXDRzeGu-Qk0AkjleEtxMxqAvJ-dZn7985gzAbyhs/get-publisher-version";
    public static final String GET_MOST_USED_TEMPLATES_LAST30D = "RAvL7pe2ppsfq4mVWTdJjssYGsjrmliNd_sZO2ytLvg1Y/get-most-used-templates-last30d";
    public static final String GET_LATEST_NANOPUBS_BY_TYPE = "RANn4Mu8r8bqJA9KJMGXTQAEGAEvtNKGFsuhRIC6BRIOo/get-latest-nanopubs-by-type";
    public static final String GET_LATEST_VERSION_OF_NP = "RAiRsB2YywxjsBMkVRTREJBooXhf2ZOHoUs5lxciEl37I/get-latest-version-of-np";
    public static final String GET_ALL_USER_INTROS = "RAjHh6P11QFUaoPiMRBavdAnTq4YMJW4PB85oVFSBfYjU/get-all-user-intros";
    public static final String GET_ALL_USER_PROFILE_PICS= "RAtcodMPmTrmBvdOqwYIrNNFDO74f8B_xo0qsOcKlCwTA/get-all-user-profile-pics";
    public static final String GET_ALL_USER_DEFAULT_LICENSE = "RA-_IwzReR2_HfTLz4YcNM6Mh3Vt16y0RUS12tpJTN9FI/get-all-user-default-license";
    public static final String GET_SUGGESTED_TEMPLATES_TO_GET_STARTED = "RA-tlMmQA7iT2wR2aS3PlONrepX7vdXbkzeWluea7AECg/get-suggested-templates-to-get-started";
    public static final String GET_MONTHLY_TYPE_OVERVIEW_BY_PUBKEYS = "RAhI-C2KsqS_IvnxwyBrbMFsoj65dhLWE_CBo_KtcVEVA/get-monthly-type-overview-by-pubkeys";
    public static final String GET_APPROVED_NANOPUBS = "RAn3agwsH2yk-8132RJApGYxdPSHHCXDAIYiCaSBBo6tg/get-approved-nanopubs";
    public static final String FIND_URI_REFERENCES = "RAz1ogtMxSTKSOYwHAfD5M3Y-vd1vd46OZta_vvbqh8kY/find-uri-references";
    public static final String GET_NANOPUBS_BY_TYPE = "RAE35dYJQlpnqim7VeKuu07E9I1LQUZpkdYQR4RvU3KMU/get-nanopubs-by-type";
    public static final String GET_INTRODUCING_NANOPUB = "RALZXWg5lZoJoQ0VHL5mpDgNxYpqU6FoDLWGp4rs8A6b8/get-introducing-nanopub";
    public static final String FULLTEXT_SEARCH = "RAxdh5xkc6K6SMLY23yKu__zTWJPXeRFc0qgNNxkbOkpY/fulltext-search";
    public static final String FIND_THINGS = "RAyMrQ89RECTi9gZK5q7gjL1wKTiP8StkLy0NIkkCiyew/find-things";
    public static final String GET_INSTANCES = "RAjt1H9rCSr6A9VGzlhye00zPdH69JdGc3kd_2VjDmzVg/get-instances";
    public static final String GET_CLASSES_FOR_THING = "RAH06iUwnvj_pRARY15ayJAY5tuJau3rCvHhPPhe49fVI/get-classes-for-thing";
    public static final String FIND_REFERENCING_NANOPUBS = "RAJStXEm1wZcg34ZLPqe00VPSzIVCwC2rrxdj_JR8v5DY/find-referencing-nanopubs";
    public static final String GET_LABELS_FOR_THING = "RAtftxAXJubB4rlm9fOvvHNVIkXvWQLC6Ag_MiV7HL0ow/get-labels-for-thing";
    public static final String GET_TEMPLATES_WITH_URI = "RARtWHRzNY5hh31X2VB5eOCJAdp9Cjv4CakA0Idqz69MI/get-templates-with-uri";
    public static final String GET_NEWER_VERSIONS_OF_NP = "RAqmmNSxQaRNWRYH0o4Da3GSOwvoFLObhXfAGUCOqEtfw/get-newer-versions-of-np";
    public static final String GET_QUERIES = "RAQqjXQYlxYQeI4Y3UQy9OrD5Jx1E3PJ8KwKKQlWbiYSw/get-queries";
    public static final String GET_LATEST_THING_NANOPUB = "RAzXDzCHoZmJITgYYquLwDDkSyNf3eKKQz9NfQPYB1cyE/get-latest-thing-nanopub";
    public static final String GET_PROJECTS = "RAnpimW7SPwaum2fefdS6_jpzYxcTRGjE-pmgNTL_BBJU/get-projects";
    public static final String GET_OWNERS = "RApiw7Z0NeP3RaLiqX6Q7Ml5CfEWbt-PysUbMNljuiLJw/get-owners";
    public static final String GET_MEMBERS = "RASyFJyADTtG-l_Qe3a5PE_e2yUJR-PydXfkZjjrBuV7U/get-members";
    public static final String GET_PARTS = "RAJmZoM0xCGE8OL6EgmQBOd1M58ggNkwZ0IUqHOAPRfvE/get-parts";
    public static final String GET_ASSERTION_TEMPLATES = "RA6bgrU3Ezfg5VAiLru0BFYHaSj6vZU6jJTscxNl8Wqvc/get-assertion-templates";
    public static final String GET_PROVENANCE_TEMPLATES = "RA4bt3MQRnEPC2nSsdbCJc74wT-e1w68dSCpYVyvG0274/get-provenance-templates";
    public static final String GET_PUBINFO_TEMPLATES = "RAMcdiJpvvk8424AJIH1jsDUQVcPYOLRw0DNnZt_ND_LQ/get-pubinfo-templates";
    public static final String GET_FILTERED_NANOPUB_LIST = "RAeoXI4vBzLV_BM2lfI5DWkFSfm6y1z3fOk4E1IncXWUo/get-filtered-nanopub-list";
    public static final String GET_LATEST_ACCEPTED_BDJ = "RAkoDiXZG_CYt978-dZ_vffK-UTbN6e1bmtFy6qdmFzC4/get-latest-accepted-bdj";
    public static final String GET_LATEST_BIODIV_CANDIDATES = "RAgnLJH8kcI_e488VdoyQ0g3-wcumj4mSiusxPmeAYsSI/get-latest-biodiv-candidates";
    public static final String GET_LATEST_ACCEPTED_DS = "RATpsBysLf8yXeMpY7PHKj-aKNCa4-4Okg1hi97OLDXIo/get-latest-accepted-ds";
    public static final String GET_LATEST_DS_CANDIDATES = "RAFNTW3jhWKnNvhMSOfYvG53ZAurxrFv_-vnIJkZyfAuo/get-latest-ds-candidates";
    public static final String GET_DS_REACTIONS = "RA0FiH8gukovvEHPBMn72zUDdMQylQmUwtIGNLYBZXGfk/get-ds-reactions";
    public static final String GET_LATEST_ACCEPTED_RIO = "RAAXmnJdXHO86GqJs8VTdqapUWqCrHKRgRT2b4NfjAfgk/get-latest-accepted-rio";
    public static final String GET_LATEST_RIO_CANDIDATES = "RAehKOCOnZ3uDBmI0kkCNTh5k9Nl6YYNj7tyc20tVymxY/get-latest-rio-candidates";
    public static final String GET_REACTIONS = "RAe7k3L0oElPOrFoUMkUhqU9dGUqfBaUSw3cVplOUn3Fk/get-reactions";
    public static final String GET_TERM_DEFINITIONS = "RAZUsK7jU85oUYEVKvMPFlqbwn19oR55IQuFkXuiS_Tkg/get-term-definitions";
    // v10 (issue #302): standalone + preset-supplied views (unbound ?display), gated to
    // admins/maintainers of the owning space or the affected user themselves. Each
    // referenced view is resolved to its latest version server-side: the version tree's
    // most recent current head (a nanopub itself neither superseded nor validly retracted
    // via npx:invalidates), robust to backdated supersedes and retracted versions, so
    // ?view is already the latest and needs no separate per-view lookup. v10 wraps that
    // resolution in a run-once sub-SELECT so the cross-repo lookup federates once for the
    // whole view set instead of once per referenced view -- cut a 44-display page from
    // ~4.5s to ~1.7s (the per-view federation round-trips were the dominant cost).
    public static final String GET_VIEW_DISPLAYS = "RAy49uUd2fPLHJAZ_7QKDtIDVgqaQ589OgQhMwNamKy-4/get-view-displays";
    // Ref-scoped get-view-displays (the Content-tab renderer query): takes the space IRI (resource)
    // AND the ref's root nanopub (root_np) as two concrete params, gating the authorised signers on
    // that ref's admins/maintainers (npa:forSpaceRef) instead of the IRI merged across refs, so the
    // rendered Content views match the space ref shown. Both params concrete so the 4-SERVICE
    // federation propagates. Column-identical to get-view-displays. Source at
    // docs/queries/get-view-displays-ref.trig. See docs/space-ref-identity.md.
    public static final String GET_VIEW_DISPLAYS_REF = "RA8iqtdTrZGOWX1Yf7w_8RgB9brG3COMw9wkbjfl6VeHc/get-view-displays";

    // Spaces-repo queries (endpoint: nanopub-query .../repo/spaces)
    // v2: IRI-keyed get-spaces. Prior client head, retained for reference; deployments up
    // to this release stay pinned on it, and the roll-out fork-merge will supersede both
    // it and v3. No longer fetched by SpaceRepository (now uses GET_SPACES_REF).
    public static final String GET_SPACES = "RAxGboS_juHuMyJQghGV3elEgZmQTew5oyw_aC9O9FFQI/get-spaces";
    // v3: ref-aware get-spaces (adds ?ref + ?root so the client can key one space per
    // ref). Published as an independent nanopub (no npx:supersedes). Active query used by
    // SpaceRepository. Source at docs/queries/get-spaces-ref.trig. See
    // docs/space-ref-identity.md.
    public static final String GET_SPACES_REF = "RAD5KmWO6uqjM04tK7tb2IREgbxA1GTGyRhaRjjaVIKPw/get-spaces";
    // Disambiguation claimants: one row per ref (root definition) claiming a space IRI, with that
    // ref's validated admins (admins_multi_iri). Pass the space IRI; replaces the per-ref
    // get-space-admins fan-out with a single fetch. Which ref is the representative (default) is
    // decided client-side. Source at docs/queries/list-space-claimants.trig.
    public static final String LIST_SPACE_CLAIMANTS = "RApsQhJnK7MV5fHzFQe4GsnsUdf_HvPT186E02JE-4CTY/list-space-claimants";
    public static final String GET_SUB_SPACE_LINKS = "RAWgoQbP9_B9h3Bnwd1FGYX1gLYPyZFOxaeqIeA3TTPSU/get-sub-space-links";
    public static final String GET_MAINTAINED_RESOURCES = "RAOOq81R84exTUKUBQT3BbgCaSJyC2lqPDXIP2XaDTosM/get-maintained-resources";
    public static final String GET_SPACE_ADMINS = "RAaHOXMQ7Kq37T9syR9at0RqushclHenlPOFRwFDn0Cfs/get-space-admins";
    // Ref-scoped admins (Stage 2): takes the ref's root nanopub (root_np), matches admins
    // on npa:forSpaceRef, so multi-ref spaces don't merge admin sets across refs. Published
    // independently. Source at docs/queries/get-space-admins-ref.trig. See
    // docs/space-ref-identity.md.
    public static final String GET_SPACE_ADMINS_REF = "RAWM8qlKbV3DEH_NsPJ6hIyTrBwIp8sNeg9MGDgu8la1o/get-space-admins";
    public static final String GET_SPACE_ADMIN_PUBKEY_HASHES = "RAJvvNY6KXqveJivZKh-chTCntrsY_KJSGLVNRQdi0pUc/get-space-admin-pubkey-hashes";
    // Ref-scoped admin pubkey hashes (Stage 2): takes the ref's root nanopub (root_np),
    // matches admins on npa:forSpaceRef, so multi-ref spaces don't merge admin keys across
    // refs. Published independently. Source at docs/queries/get-space-admin-pubkey-hashes-ref.trig.
    public static final String GET_SPACE_ADMIN_PUBKEY_HASHES_REF = "RAO8KDdS4_Z0-R1qCSKqWcewg0WUSaiQDh_p1N1Bg-zic/get-space-admin-pubkey-hashes";
    public static final String GET_SPACE_ROLES = "RAKJFw-xIQ2r_aSKT4-6Pm3JkeqlWC_wmypfpA1JWPJl8/get-space-roles";
    // Ref-scoped roles (Stage 2): takes the ref's root nanopub (root_np), matches
    // RoleAssignments on npa:forSpaceRef, so multi-ref spaces don't merge role sets across
    // refs. Published independently. Source at docs/queries/get-space-roles-ref.trig.
    public static final String GET_SPACE_ROLES_REF = "RAqUWUfmEmzxpkeuXek7oEiVSnwjuzRfV8kRe7pQSpe4c/get-space-roles";
    public static final String GET_SPACE_MEMBERS = "RAo0c4UNoD-uTP3xATU_-TB6vO-nMO4Ya-mvdaGjX5qVE/get-space-members";
    // Ref-scoped members (Stage 2): takes the ref's root nanopub (root_np), resolves the
    // ref + its space IRI, and returns ALL non-admin RoleInstantiations naming that IRI
    // (raw npa:spacesGraph, matching the looser pre-migration semantic), each with a
    // ?validated flag = whether it is also in the trust-state-validated current-state graph
    // (i.e. the agent's key has a trust-approved AccountState from an accepted intro). Shows
    // every self-declared member while flagging the un-introduced ones, rather than hiding
    // them. Published independently. Source at docs/queries/get-space-members-ref.trig.
    public static final String GET_SPACE_MEMBERS_REF = "RAqp9TSM4oAwvJ0UQrvZ-qzEuS4R8zpsuD_lw1lyW5MOw/get-space-members";
    // Ref-scoped observers (Stage 2): takes the ref's root nanopub (root_np), lists observers
    // INCLUDING un-introduced self-declared ones (not in the validated state), each flagged
    // via a headerless ?unverified_noheader column (⚠️ when unvalidated). Drives the existing
    // Observers view's table (the view nanopub is left untouched). Published independently.
    // v2 (RA58KSjh, supersedes RARc37t3) excludes higher-tier role claims (admin built-in
    // property, or Maintainer/Member-tier declarations) — those go to LIST_SPACE_NON_APPROVED_REF
    // instead of showing up here mislabelled as observers. Source at
    // docs/queries/list-space-observers-ref-v2.trig.
    public static final String LIST_SPACE_OBSERVERS_REF = "RA58KSjhMzsFjibtL02m11Xptk0A-CtAjG8wWhvA_ljmQ/list-space-observers";

    // Ref-scoped non-approved role claims (root_np): agents holding a higher-tier role
    // instantiation (admin/maintainer/member) that is NOT in the validated state — a
    // self-assigned or otherwise ungranted claim awaiting approval by an equal-or-higher-tier
    // member. Observer-tier roles are excluded (self-assignable, so they need no approval and
    // are listed by LIST_SPACE_OBSERVERS_REF). Only admin claims are detectable today (the live
    // repo materialises every declaration as ObserverRole). Drives the "❓ Pending
    // Admins/Maintainers/Members" view. Source at docs/queries/list-space-non-approved-ref.trig.
    public static final String LIST_SPACE_NON_APPROVED_REF = "RAZMAChiW6g1uJ02fYKuw_1tVk6XPUI1PpYiSraUDYpVY/list-space-non-approved";

    // Ref-scoped variants of the four About-tab *view* display queries (distinct from the
    // GET_SPACE_*_REF client-authority queries above). Each takes the ref's root nanopub
    // (root_np), resolves the ref via npa:rootNanopub, and scopes by npa:forSpaceRef (members,
    // roles) or the ref-level npa:hasSubSpace / npa:hasMaintainedResource edge (sub-spaces,
    // maintained resources), so a ?root=-pinned space page shows only that one ref's listings
    // rather than merging all refs claiming the IRI. Column-compatible with the IRI-keyed view
    // queries, so they drive the existing view nanopubs unchanged (the observers pattern). Used
    // by AboutSpacePanel with an IRI-keyed fallback when the ref root is unknown. Published
    // independently (no npx:supersedes). Sources at docs/queries/list-*-ref.trig. See
    // docs/space-ref-identity.md.
    public static final String LIST_SPACE_MEMBERS_REF = "RAXhi9zBXJ2mZVmjBm_MZk1xM6OCxxVyr5B3xNYdy6boQ/list-space-members";
    public static final String LIST_SPACE_ROLES_REF = "RAYrSRARuWV2iTWVe6tKDgkaED8ztlr1q5Z5QBIDV4a-Q/list-space-roles";
    public static final String LIST_SUB_SPACES_REF = "RA-j0DFqkNUHxF_WIds8wWJix6DkDFBmUBWmKXfG24XYQ/list-sub-spaces";
    public static final String LIST_MAINTAINED_RESOURCES_REF = "RAPthUMRDXiJeD2BrOsZigTsbA0LktBc-HC4alDSfVNKM/list-maintained-resources";

    // Ref-scoped view displays for a space. Unlike the LIST_*_REF above this is NOT a single-param
    // root_np query: view displays aren't materialised into the spaces repo, so the query is a
    // 4-SERVICE federated join, and federation only propagates CONCRETE (VALUES) bindings into the
    // sub-services. A single auto-detecting param fails (a service-derived resource IRI doesn't push
    // into the branches → 0 rows). So this takes TWO concrete params — the space IRI (resource) and
    // the ref's root nanopub (root_np) — and resolves the ref + scopes the authority gate to
    // npa:forSpaceRef INSIDE the /repo/spaces service. Column-identical to list-view-displays (its
    // spaces-only companion), so it drives the existing view-displays view unchanged. Used by
    // AboutSpacePanel with both params; falls back to the IRI-keyed query when the ref root is
    // unknown. Source at docs/queries/list-view-displays-ref.trig (regenerate from the latest
    // list-view-displays by adding the root_np VALUES + ?passedRef resolution + forSpaceRef gate).
    public static final String LIST_VIEW_DISPLAYS_REF = "RAKfr2_TxPCXE-u-Ol0UDb2-8U8sej8aqKhD32EtDTob0/list-view-displays";

    private static final Logger logger = LoggerFactory.getLogger(QueryApiAccess.class);

    private static ConcurrentMap<String, Pair<Long, String>> latestVersionMap = new ConcurrentHashMap<>();

    private static final String queryIriPattern = "^(.*[^A-Za-z0-9-_])(RA[A-Za-z0-9-_]{43})[/#]([^/#]+)$";

    /**
     * Forces the retrieval of an API response for a given query name and parameters.
     * Retries until a valid response is received.
     *
     * @param queryRef The query reference
     * @return The API response.
     */
    public static ApiResponse forcedGet(QueryRef queryRef) {
        long deadline = System.currentTimeMillis() + 30_000;
        long sleepMs = 1000;
        while (System.currentTimeMillis() < deadline) {
            try {
                ApiResponse resp = QueryApiAccess.get(queryRef);
                if (resp != null) return resp;
            } catch (Exception ex) {
                logger.error("Error while forcing API get for query {}", queryRef, ex);
            }
            try {
                Thread.sleep(Math.min(sleepMs, Math.max(0, deadline - System.currentTimeMillis())));
                sleepMs = Math.min(sleepMs * 2, 16_000);
            } catch (InterruptedException ex) {
                Thread.currentThread().interrupt();
                break;
            }
        }
        throw new RuntimeException("Timed out forcing API get for query: " + queryRef);
    }

    /**
     * Retrieves an API response for a given query reference.
     *
     * @param queryRef The query reference
     * @return The API response.
     * @throws org.nanopub.extra.services.FailedApiCallException         If the API call fails.
     * @throws org.nanopub.extra.services.APINotReachableException       If the API is not reachable.
     * @throws org.nanopub.extra.services.NotEnoughAPIInstancesException If there are not enough API instances.
     */
    public static ApiResponse get(QueryRef queryRef) throws FailedApiCallException, APINotReachableException, NotEnoughAPIInstancesException {
        if (!queryRef.getQueryId().matches("^RA[A-Za-z0-9-_]{43}/.*$")) {
            throw new IllegalArgumentException("QueryRef name must be full query ID: " + queryRef.getQueryId());
        }
        return QueryAccess.get(queryRef);
    }

    /**
     * Retrieves the latest version ID of a given nanopublication.
     *
     * @param nanopubId The ID of the nanopublication.
     * @return The latest version ID.
     */
    public static String getLatestVersionId(String nanopubId) {
        long currentTime = System.currentTimeMillis();
        if (!latestVersionMap.containsKey(nanopubId) || currentTime - latestVersionMap.get(nanopubId).getLeft() > 1000 * 60) {
            // Re-fetch if existing value is older than 1 minute
            try {
                ApiResponse r = ApiCache.retrieveResponseSync(new QueryRef(GET_LATEST_VERSION_OF_NP, "np", nanopubId), false);
                if (r != null && r.getData().size() == 1) {
                    String l = r.getData().get(0).get("latest");
                    latestVersionMap.put(nanopubId, Pair.of(currentTime, l));
                }
            } catch (Exception ex) {
                logger.error("Error while getting latest version of nanopub '{}'", nanopubId, ex);
            }
        }
        Pair<Long, String> cached = latestVersionMap.get(nanopubId);
        return cached != null ? cached.getRight() : nanopubId;
    }

    /**
     * Extracts the query ID from a given query IRI.
     *
     * @param queryIri The query IRI.
     * @return The query ID, or null if the IRI is invalid.
     */
    public static String getQueryId(IRI queryIri) {
        if (queryIri == null) return null;
        if (!queryIri.stringValue().matches(queryIriPattern)) return null;
        return queryIri.stringValue().replaceFirst(queryIriPattern, "$2/$3");
    }

    /**
     * Extracts the query name from a given query IRI.
     *
     * @param queryIri The query IRI.
     * @return The query name, or null if the IRI is invalid.
     */
    public static String getQueryName(IRI queryIri) {
        if (queryIri == null) return null;
        if (!queryIri.stringValue().matches(queryIriPattern)) return null;
        return queryIri.stringValue().replaceFirst(queryIriPattern, "$3");
    }

}

1	package com.knowledgepixels.nanodash;
2
3	import org.apache.commons.lang3.tuple.Pair;
4	import org.eclipse.rdf4j.model.IRI;
5	import org.nanopub.extra.services.*;
6	import org.slf4j.Logger;
7	import org.slf4j.LoggerFactory;
8
9	import java.util.concurrent.ConcurrentHashMap;
10	import java.util.concurrent.ConcurrentMap;
11
12	/**
13	* Utility class for accessing and managing API queries.
14	* Provides methods to retrieve query results, manage query IDs, and fetch the latest versions of nanopublications.
15	*/
16	public class QueryApiAccess {
17
18	private QueryApiAccess() {
19	} // no instances allowed
20
21	// Query IDs (full id = RA.../query-name)
22	public static final String GET_LATEST_NANOPUBS_FROM_PUBKEYS = "RAe-oA5eSmkCXCALZ99-0k4imnlI74KPqURfhHOmnzo6A/get-latest-nanopubs-from-pubkeys";
23	public static final String GET_LATEST_NANOPUBS_FROM_USERID = "RAuy4N1h4vZ1wgBUMvTiWw2y_Y0_5oFYRTwdq-xj2qqNM/get-latest-nanopubs-from-userid";
24	public static final String GET_USER_STATS_FROM_PUBKEYS = "RAiCBvPL2hRGzI8g5L68O-C9yEXryC_vG35GdEm5jtH_s/get-user-stats-from-pubkeys";
25	public static final String GET_USER_STATS_FROM_USERID = "RA3U23LL3xbNwsu92fAqsKb0kagOud4f9TlRQq3evNJck/get-user-stats-from-userid";
26	public static final String GET_TOP_CREATORS_LAST30D = "RAcNvmEiUNUb2a7O4fwRvy2x2BCN640AC880fTzFworr8/get-top-creators-last30d";
27	public static final String GET_LATEST_USERS = "RAr27GmRUKQmvPbfmB34N9l9lX-xYK7nQhvOMbQCk3byI/get-latest-users";
28	public static final String GET_MOST_RECENT_NANOPUBS = "RAYNg6rfvXIVvJY2u8oS0EEjxnVvimLLVZG1rOar_nWIY/get-most-recent-nanopubs";
29	public static final String GET_PUBLISHER_VERSION = "RAPGhXDRzeGu-Qk0AkjleEtxMxqAvJ-dZn7985gzAbyhs/get-publisher-version";
30	public static final String GET_MOST_USED_TEMPLATES_LAST30D = "RAvL7pe2ppsfq4mVWTdJjssYGsjrmliNd_sZO2ytLvg1Y/get-most-used-templates-last30d";
31	public static final String GET_LATEST_NANOPUBS_BY_TYPE = "RANn4Mu8r8bqJA9KJMGXTQAEGAEvtNKGFsuhRIC6BRIOo/get-latest-nanopubs-by-type";
32	public static final String GET_LATEST_VERSION_OF_NP = "RAiRsB2YywxjsBMkVRTREJBooXhf2ZOHoUs5lxciEl37I/get-latest-version-of-np";
33	public static final String GET_ALL_USER_INTROS = "RAjHh6P11QFUaoPiMRBavdAnTq4YMJW4PB85oVFSBfYjU/get-all-user-intros";
34	public static final String GET_ALL_USER_PROFILE_PICS= "RAtcodMPmTrmBvdOqwYIrNNFDO74f8B_xo0qsOcKlCwTA/get-all-user-profile-pics";
35	public static final String GET_ALL_USER_DEFAULT_LICENSE = "RA-_IwzReR2_HfTLz4YcNM6Mh3Vt16y0RUS12tpJTN9FI/get-all-user-default-license";
36	public static final String GET_SUGGESTED_TEMPLATES_TO_GET_STARTED = "RA-tlMmQA7iT2wR2aS3PlONrepX7vdXbkzeWluea7AECg/get-suggested-templates-to-get-started";
37	public static final String GET_MONTHLY_TYPE_OVERVIEW_BY_PUBKEYS = "RAhI-C2KsqS_IvnxwyBrbMFsoj65dhLWE_CBo_KtcVEVA/get-monthly-type-overview-by-pubkeys";
38	public static final String GET_APPROVED_NANOPUBS = "RAn3agwsH2yk-8132RJApGYxdPSHHCXDAIYiCaSBBo6tg/get-approved-nanopubs";
39	public static final String FIND_URI_REFERENCES = "RAz1ogtMxSTKSOYwHAfD5M3Y-vd1vd46OZta_vvbqh8kY/find-uri-references";
40	public static final String GET_NANOPUBS_BY_TYPE = "RAE35dYJQlpnqim7VeKuu07E9I1LQUZpkdYQR4RvU3KMU/get-nanopubs-by-type";
41	public static final String GET_INTRODUCING_NANOPUB = "RALZXWg5lZoJoQ0VHL5mpDgNxYpqU6FoDLWGp4rs8A6b8/get-introducing-nanopub";
42	public static final String FULLTEXT_SEARCH = "RAxdh5xkc6K6SMLY23yKu__zTWJPXeRFc0qgNNxkbOkpY/fulltext-search";
43	public static final String FIND_THINGS = "RAyMrQ89RECTi9gZK5q7gjL1wKTiP8StkLy0NIkkCiyew/find-things";
44	public static final String GET_INSTANCES = "RAjt1H9rCSr6A9VGzlhye00zPdH69JdGc3kd_2VjDmzVg/get-instances";
45	public static final String GET_CLASSES_FOR_THING = "RAH06iUwnvj_pRARY15ayJAY5tuJau3rCvHhPPhe49fVI/get-classes-for-thing";
46	public static final String FIND_REFERENCING_NANOPUBS = "RAJStXEm1wZcg34ZLPqe00VPSzIVCwC2rrxdj_JR8v5DY/find-referencing-nanopubs";
47	public static final String GET_LABELS_FOR_THING = "RAtftxAXJubB4rlm9fOvvHNVIkXvWQLC6Ag_MiV7HL0ow/get-labels-for-thing";
48	public static final String GET_TEMPLATES_WITH_URI = "RARtWHRzNY5hh31X2VB5eOCJAdp9Cjv4CakA0Idqz69MI/get-templates-with-uri";
49	public static final String GET_NEWER_VERSIONS_OF_NP = "RAqmmNSxQaRNWRYH0o4Da3GSOwvoFLObhXfAGUCOqEtfw/get-newer-versions-of-np";
50	public static final String GET_QUERIES = "RAQqjXQYlxYQeI4Y3UQy9OrD5Jx1E3PJ8KwKKQlWbiYSw/get-queries";
51	public static final String GET_LATEST_THING_NANOPUB = "RAzXDzCHoZmJITgYYquLwDDkSyNf3eKKQz9NfQPYB1cyE/get-latest-thing-nanopub";
52	public static final String GET_PROJECTS = "RAnpimW7SPwaum2fefdS6_jpzYxcTRGjE-pmgNTL_BBJU/get-projects";
53	public static final String GET_OWNERS = "RApiw7Z0NeP3RaLiqX6Q7Ml5CfEWbt-PysUbMNljuiLJw/get-owners";
54	public static final String GET_MEMBERS = "RASyFJyADTtG-l_Qe3a5PE_e2yUJR-PydXfkZjjrBuV7U/get-members";
55	public static final String GET_PARTS = "RAJmZoM0xCGE8OL6EgmQBOd1M58ggNkwZ0IUqHOAPRfvE/get-parts";
56	public static final String GET_ASSERTION_TEMPLATES = "RA6bgrU3Ezfg5VAiLru0BFYHaSj6vZU6jJTscxNl8Wqvc/get-assertion-templates";
57	public static final String GET_PROVENANCE_TEMPLATES = "RA4bt3MQRnEPC2nSsdbCJc74wT-e1w68dSCpYVyvG0274/get-provenance-templates";
58	public static final String GET_PUBINFO_TEMPLATES = "RAMcdiJpvvk8424AJIH1jsDUQVcPYOLRw0DNnZt_ND_LQ/get-pubinfo-templates";
59	public static final String GET_FILTERED_NANOPUB_LIST = "RAeoXI4vBzLV_BM2lfI5DWkFSfm6y1z3fOk4E1IncXWUo/get-filtered-nanopub-list";
60	public static final String GET_LATEST_ACCEPTED_BDJ = "RAkoDiXZG_CYt978-dZ_vffK-UTbN6e1bmtFy6qdmFzC4/get-latest-accepted-bdj";
61	public static final String GET_LATEST_BIODIV_CANDIDATES = "RAgnLJH8kcI_e488VdoyQ0g3-wcumj4mSiusxPmeAYsSI/get-latest-biodiv-candidates";
62	public static final String GET_LATEST_ACCEPTED_DS = "RATpsBysLf8yXeMpY7PHKj-aKNCa4-4Okg1hi97OLDXIo/get-latest-accepted-ds";
63	public static final String GET_LATEST_DS_CANDIDATES = "RAFNTW3jhWKnNvhMSOfYvG53ZAurxrFv_-vnIJkZyfAuo/get-latest-ds-candidates";
64	public static final String GET_DS_REACTIONS = "RA0FiH8gukovvEHPBMn72zUDdMQylQmUwtIGNLYBZXGfk/get-ds-reactions";
65	public static final String GET_LATEST_ACCEPTED_RIO = "RAAXmnJdXHO86GqJs8VTdqapUWqCrHKRgRT2b4NfjAfgk/get-latest-accepted-rio";
66	public static final String GET_LATEST_RIO_CANDIDATES = "RAehKOCOnZ3uDBmI0kkCNTh5k9Nl6YYNj7tyc20tVymxY/get-latest-rio-candidates";
67	public static final String GET_REACTIONS = "RAe7k3L0oElPOrFoUMkUhqU9dGUqfBaUSw3cVplOUn3Fk/get-reactions";
68	public static final String GET_TERM_DEFINITIONS = "RAZUsK7jU85oUYEVKvMPFlqbwn19oR55IQuFkXuiS_Tkg/get-term-definitions";
69	// v10 (issue #302): standalone + preset-supplied views (unbound ?display), gated to
70	// admins/maintainers of the owning space or the affected user themselves. Each
71	// referenced view is resolved to its latest version server-side: the version tree's
72	// most recent current head (a nanopub itself neither superseded nor validly retracted
73	// via npx:invalidates), robust to backdated supersedes and retracted versions, so
74	// ?view is already the latest and needs no separate per-view lookup. v10 wraps that
75	// resolution in a run-once sub-SELECT so the cross-repo lookup federates once for the
76	// whole view set instead of once per referenced view -- cut a 44-display page from
77	// ~4.5s to ~1.7s (the per-view federation round-trips were the dominant cost).
78	public static final String GET_VIEW_DISPLAYS = "RAy49uUd2fPLHJAZ_7QKDtIDVgqaQ589OgQhMwNamKy-4/get-view-displays";
79	// Ref-scoped get-view-displays (the Content-tab renderer query): takes the space IRI (resource)
80	// AND the ref's root nanopub (root_np) as two concrete params, gating the authorised signers on
81	// that ref's admins/maintainers (npa:forSpaceRef) instead of the IRI merged across refs, so the
82	// rendered Content views match the space ref shown. Both params concrete so the 4-SERVICE
83	// federation propagates. Column-identical to get-view-displays. Source at
84	// docs/queries/get-view-displays-ref.trig. See docs/space-ref-identity.md.
85	public static final String GET_VIEW_DISPLAYS_REF = "RA8iqtdTrZGOWX1Yf7w_8RgB9brG3COMw9wkbjfl6VeHc/get-view-displays";
86
87	// Spaces-repo queries (endpoint: nanopub-query .../repo/spaces)
88	// v2: IRI-keyed get-spaces. Prior client head, retained for reference; deployments up
89	// to this release stay pinned on it, and the roll-out fork-merge will supersede both
90	// it and v3. No longer fetched by SpaceRepository (now uses GET_SPACES_REF).
91	public static final String GET_SPACES = "RAxGboS_juHuMyJQghGV3elEgZmQTew5oyw_aC9O9FFQI/get-spaces";
92	// v3: ref-aware get-spaces (adds ?ref + ?root so the client can key one space per
93	// ref). Published as an independent nanopub (no npx:supersedes). Active query used by
94	// SpaceRepository. Source at docs/queries/get-spaces-ref.trig. See
95	// docs/space-ref-identity.md.
96	public static final String GET_SPACES_REF = "RAD5KmWO6uqjM04tK7tb2IREgbxA1GTGyRhaRjjaVIKPw/get-spaces";
97	// Disambiguation claimants: one row per ref (root definition) claiming a space IRI, with that
98	// ref's validated admins (admins_multi_iri). Pass the space IRI; replaces the per-ref
99	// get-space-admins fan-out with a single fetch. Which ref is the representative (default) is
100	// decided client-side. Source at docs/queries/list-space-claimants.trig.
101	public static final String LIST_SPACE_CLAIMANTS = "RApsQhJnK7MV5fHzFQe4GsnsUdf_HvPT186E02JE-4CTY/list-space-claimants";
102	public static final String GET_SUB_SPACE_LINKS = "RAWgoQbP9_B9h3Bnwd1FGYX1gLYPyZFOxaeqIeA3TTPSU/get-sub-space-links";
103	public static final String GET_MAINTAINED_RESOURCES = "RAOOq81R84exTUKUBQT3BbgCaSJyC2lqPDXIP2XaDTosM/get-maintained-resources";
104	public static final String GET_SPACE_ADMINS = "RAaHOXMQ7Kq37T9syR9at0RqushclHenlPOFRwFDn0Cfs/get-space-admins";
105	// Ref-scoped admins (Stage 2): takes the ref's root nanopub (root_np), matches admins
106	// on npa:forSpaceRef, so multi-ref spaces don't merge admin sets across refs. Published
107	// independently. Source at docs/queries/get-space-admins-ref.trig. See
108	// docs/space-ref-identity.md.
109	public static final String GET_SPACE_ADMINS_REF = "RAWM8qlKbV3DEH_NsPJ6hIyTrBwIp8sNeg9MGDgu8la1o/get-space-admins";
110	public static final String GET_SPACE_ADMIN_PUBKEY_HASHES = "RAJvvNY6KXqveJivZKh-chTCntrsY_KJSGLVNRQdi0pUc/get-space-admin-pubkey-hashes";
111	// Ref-scoped admin pubkey hashes (Stage 2): takes the ref's root nanopub (root_np),
112	// matches admins on npa:forSpaceRef, so multi-ref spaces don't merge admin keys across
113	// refs. Published independently. Source at docs/queries/get-space-admin-pubkey-hashes-ref.trig.
114	public static final String GET_SPACE_ADMIN_PUBKEY_HASHES_REF = "RAO8KDdS4_Z0-R1qCSKqWcewg0WUSaiQDh_p1N1Bg-zic/get-space-admin-pubkey-hashes";
115	public static final String GET_SPACE_ROLES = "RAKJFw-xIQ2r_aSKT4-6Pm3JkeqlWC_wmypfpA1JWPJl8/get-space-roles";
116	// Ref-scoped roles (Stage 2): takes the ref's root nanopub (root_np), matches
117	// RoleAssignments on npa:forSpaceRef, so multi-ref spaces don't merge role sets across
118	// refs. Published independently. Source at docs/queries/get-space-roles-ref.trig.
119	public static final String GET_SPACE_ROLES_REF = "RAqUWUfmEmzxpkeuXek7oEiVSnwjuzRfV8kRe7pQSpe4c/get-space-roles";
120	public static final String GET_SPACE_MEMBERS = "RAo0c4UNoD-uTP3xATU_-TB6vO-nMO4Ya-mvdaGjX5qVE/get-space-members";
121	// Ref-scoped members (Stage 2): takes the ref's root nanopub (root_np), resolves the
122	// ref + its space IRI, and returns ALL non-admin RoleInstantiations naming that IRI
123	// (raw npa:spacesGraph, matching the looser pre-migration semantic), each with a
124	// ?validated flag = whether it is also in the trust-state-validated current-state graph
125	// (i.e. the agent's key has a trust-approved AccountState from an accepted intro). Shows
126	// every self-declared member while flagging the un-introduced ones, rather than hiding
127	// them. Published independently. Source at docs/queries/get-space-members-ref.trig.
128	public static final String GET_SPACE_MEMBERS_REF = "RAqp9TSM4oAwvJ0UQrvZ-qzEuS4R8zpsuD_lw1lyW5MOw/get-space-members";
129	// Ref-scoped observers (Stage 2): takes the ref's root nanopub (root_np), lists observers
130	// INCLUDING un-introduced self-declared ones (not in the validated state), each flagged
131	// via a headerless ?unverified_noheader column (⚠️ when unvalidated). Drives the existing
132	// Observers view's table (the view nanopub is left untouched). Published independently.
133	// v2 (RA58KSjh, supersedes RARc37t3) excludes higher-tier role claims (admin built-in
134	// property, or Maintainer/Member-tier declarations) — those go to LIST_SPACE_NON_APPROVED_REF
135	// instead of showing up here mislabelled as observers. Source at
136	// docs/queries/list-space-observers-ref-v2.trig.
137	public static final String LIST_SPACE_OBSERVERS_REF = "RA58KSjhMzsFjibtL02m11Xptk0A-CtAjG8wWhvA_ljmQ/list-space-observers";
138
139	// Ref-scoped non-approved role claims (root_np): agents holding a higher-tier role
140	// instantiation (admin/maintainer/member) that is NOT in the validated state — a
141	// self-assigned or otherwise ungranted claim awaiting approval by an equal-or-higher-tier
142	// member. Observer-tier roles are excluded (self-assignable, so they need no approval and
143	// are listed by LIST_SPACE_OBSERVERS_REF). Only admin claims are detectable today (the live
144	// repo materialises every declaration as ObserverRole). Drives the "❓ Pending
145	// Admins/Maintainers/Members" view. Source at docs/queries/list-space-non-approved-ref.trig.
146	public static final String LIST_SPACE_NON_APPROVED_REF = "RAZMAChiW6g1uJ02fYKuw_1tVk6XPUI1PpYiSraUDYpVY/list-space-non-approved";
147
148	// Ref-scoped variants of the four About-tab view display queries (distinct from the
149	// GET_SPACE_*_REF client-authority queries above). Each takes the ref's root nanopub
150	// (root_np), resolves the ref via npa:rootNanopub, and scopes by npa:forSpaceRef (members,
151	// roles) or the ref-level npa:hasSubSpace / npa:hasMaintainedResource edge (sub-spaces,
152	// maintained resources), so a ?root=-pinned space page shows only that one ref's listings
153	// rather than merging all refs claiming the IRI. Column-compatible with the IRI-keyed view
154	// queries, so they drive the existing view nanopubs unchanged (the observers pattern). Used
155	// by AboutSpacePanel with an IRI-keyed fallback when the ref root is unknown. Published
156	// independently (no npx:supersedes). Sources at docs/queries/list-*-ref.trig. See
157	// docs/space-ref-identity.md.
158	public static final String LIST_SPACE_MEMBERS_REF = "RAXhi9zBXJ2mZVmjBm_MZk1xM6OCxxVyr5B3xNYdy6boQ/list-space-members";
159	public static final String LIST_SPACE_ROLES_REF = "RAYrSRARuWV2iTWVe6tKDgkaED8ztlr1q5Z5QBIDV4a-Q/list-space-roles";
160	public static final String LIST_SUB_SPACES_REF = "RA-j0DFqkNUHxF_WIds8wWJix6DkDFBmUBWmKXfG24XYQ/list-sub-spaces";
161	public static final String LIST_MAINTAINED_RESOURCES_REF = "RAPthUMRDXiJeD2BrOsZigTsbA0LktBc-HC4alDSfVNKM/list-maintained-resources";
162
163	// Ref-scoped view displays for a space. Unlike the LIST_*_REF above this is NOT a single-param
164	// root_np query: view displays aren't materialised into the spaces repo, so the query is a
165	// 4-SERVICE federated join, and federation only propagates CONCRETE (VALUES) bindings into the
166	// sub-services. A single auto-detecting param fails (a service-derived resource IRI doesn't push
167	// into the branches → 0 rows). So this takes TWO concrete params — the space IRI (resource) and
168	// the ref's root nanopub (root_np) — and resolves the ref + scopes the authority gate to
169	// npa:forSpaceRef INSIDE the /repo/spaces service. Column-identical to list-view-displays (its
170	// spaces-only companion), so it drives the existing view-displays view unchanged. Used by
171	// AboutSpacePanel with both params; falls back to the IRI-keyed query when the ref root is
172	// unknown. Source at docs/queries/list-view-displays-ref.trig (regenerate from the latest
173	// list-view-displays by adding the root_np VALUES + ?passedRef resolution + forSpaceRef gate).
174	public static final String LIST_VIEW_DISPLAYS_REF = "RAKfr2_TxPCXE-u-Ol0UDb2-8U8sej8aqKhD32EtDTob0/list-view-displays";
175
176	private static final Logger logger = LoggerFactory.getLogger(QueryApiAccess.class);	9✔
177
178	private static ConcurrentMap<String, Pair<Long, String>> latestVersionMap = new ConcurrentHashMap<>();	15✔
179
180	private static final String queryIriPattern = "^(.*[^A-Za-z0-9-_])(RA[A-Za-z0-9-_]{43})[/#]([^/#]+)$";
181
182	/**
183	* Forces the retrieval of an API response for a given query name and parameters.
184	* Retries until a valid response is received.
185	*
186	* @param queryRef The query reference
187	* @return The API response.
188	*/
189	public static ApiResponse forcedGet(QueryRef queryRef) {
190	long deadline = System.currentTimeMillis() + 30_000;	12✔
191	long sleepMs = 1000;	6✔
192	while (System.currentTimeMillis() < deadline) {	12!
193	try {
194	ApiResponse resp = QueryApiAccess.get(queryRef);	9✔
195	if (resp != null) return resp;	12✔
196	} catch (Exception ex) {	×
197	logger.error("Error while forcing API get for query {}", queryRef, ex);	×
198	}	3✔
199	try {
200	Thread.sleep(Math.min(sleepMs, Math.max(0, deadline - System.currentTimeMillis())));	24✔
201	sleepMs = Math.min(sleepMs * 2, 16_000);	18✔
202	} catch (InterruptedException ex) {	×
203	Thread.currentThread().interrupt();	×
204	break;	×
205	}	3✔
206	}
207	throw new RuntimeException("Timed out forcing API get for query: " + queryRef);	×
208	}
209
210	/**
211	* Retrieves an API response for a given query reference.
212	*
213	* @param queryRef The query reference
214	* @return The API response.
215	* @throws org.nanopub.extra.services.FailedApiCallException If the API call fails.
216	* @throws org.nanopub.extra.services.APINotReachableException If the API is not reachable.
217	* @throws org.nanopub.extra.services.NotEnoughAPIInstancesException If there are not enough API instances.
218	*/
219	public static ApiResponse get(QueryRef queryRef) throws FailedApiCallException, APINotReachableException, NotEnoughAPIInstancesException {
220	if (!queryRef.getQueryId().matches("^RA[A-Za-z0-9-_]{43}/.*$")) {	15!
221	throw new IllegalArgumentException("QueryRef name must be full query ID: " + queryRef.getQueryId());	×
222	}
223	return QueryAccess.get(queryRef);	9✔
224	}
225
226	/**
227	* Retrieves the latest version ID of a given nanopublication.
228	*
229	* @param nanopubId The ID of the nanopublication.
230	* @return The latest version ID.
231	*/
232	public static String getLatestVersionId(String nanopubId) {
233	long currentTime = System.currentTimeMillis();	6✔
234	if (!latestVersionMap.containsKey(nanopubId) \|\| currentTime - latestVersionMap.get(nanopubId).getLeft() > 1000 * 60) {	12!
235	// Re-fetch if existing value is older than 1 minute
236	try {
237	ApiResponse r = ApiCache.retrieveResponseSync(new QueryRef(GET_LATEST_VERSION_OF_NP, "np", nanopubId), false);	27✔
238	if (r != null && r.getData().size() == 1) {	21!
239	String l = r.getData().get(0).get("latest");	24✔
240	latestVersionMap.put(nanopubId, Pair.of(currentTime, l));	24✔
241	}
242	} catch (Exception ex) {	×
243	logger.error("Error while getting latest version of nanopub '{}'", nanopubId, ex);	×
244	}	3✔
245	}
246	Pair<Long, String> cached = latestVersionMap.get(nanopubId);	15✔
247	return cached != null ? cached.getRight() : nanopubId;	21!
248	}
249
250	/**
251	* Extracts the query ID from a given query IRI.
252	*
253	* @param queryIri The query IRI.
254	* @return The query ID, or null if the IRI is invalid.
255	*/
256	public static String getQueryId(IRI queryIri) {
257	if (queryIri == null) return null;	×
258	if (!queryIri.stringValue().matches(queryIriPattern)) return null;	×
259	return queryIri.stringValue().replaceFirst(queryIriPattern, "$2/$3");	×
260	}
261
262	/**
263	* Extracts the query name from a given query IRI.
264	*
265	* @param queryIri The query IRI.
266	* @return The query name, or null if the IRI is invalid.
267	*/
268	public static String getQueryName(IRI queryIri) {
269	if (queryIri == null) return null;	12✔
270	if (!queryIri.stringValue().matches(queryIriPattern)) return null;	21✔
271	return queryIri.stringValue().replaceFirst(queryIriPattern, "$3");	18✔
272	}
273
274	}

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