This is an automated email from the ASF dual-hosted git repository.

tballison pushed a commit to branch TIKA-4797-migration-table
in repository https://gitbox.apache.org/repos/asf/tika.git

commit e3542384af21fbd030487459fb990f9fa9cbc8c0
Author: tallison <[email protected]>
AuthorDate: Wed Jul 29 21:27:26 2026 -0400

    add migration table
---
 .../pages/migration-to-4x/metadata-changes-4x.adoc |  13 +
 tika-core/pom.xml                                  |   1 +
 .../metadata/filter/LegacyKeyMigrationFilter.java  | 185 +++++++
 .../tika/metadata/metadata-migration-3x-4x.json    | 137 +++++
 .../filter/LegacyKeyMigrationFilterTest.java       | 148 ++++++
 .../metadata/schema/MigrationTableGenerator.java   | 122 +++++
 .../schema/MetadataMigrationTableTest.java         |  55 +++
 .../org/apache/tika/metadata/metadata-keys-3x.json | 550 +++++++++++++++++++++
 .../org/apache/tika/metadata/migration-overlay.tsv |  43 ++
 9 files changed, 1254 insertions(+)

diff --git a/docs/modules/ROOT/pages/migration-to-4x/metadata-changes-4x.adoc 
b/docs/modules/ROOT/pages/migration-to-4x/metadata-changes-4x.adoc
index 7cfcb1387e..454287d602 100644
--- a/docs/modules/ROOT/pages/migration-to-4x/metadata-changes-4x.adoc
+++ b/docs/modules/ROOT/pages/migration-to-4x/metadata-changes-4x.adoc
@@ -307,6 +307,19 @@ String value = metadata.get("mapi:some-property");
 String value = metadata.get("mapi:some-property");
 ----
 
+[CAUTION]
+====
+Two 3.x keys do not migrate one-to-one, and the opt-in 
`LegacyKeyMigrationFilter` cannot restore
+them cleanly:
+
+* `pst:folderPath` is *dropped*, not renamed. In 4.x the Outlook PST parser 
folds the folder path
+into `tk:internal-path` (`<folder>/<item-name>`, a superset), so there is no 
folder-only value to
+map back to.
+* `mapi:msg-client-submit-time` is *consolidated* into 
`mapi:msg-submission-accepted-at-time`: 4.x
+removed the distinct client-submit key and repoints PST's client-submit value 
onto
+submission-accepted. The value carries over, but these are distinct MAPI 
properties.
+====
+
 === Resource Name
 
 [source,java]
diff --git a/tika-core/pom.xml b/tika-core/pom.xml
index 030ad95c01..dfc9088516 100644
--- a/tika-core/pom.xml
+++ b/tika-core/pom.xml
@@ -207,6 +207,7 @@
             
<inputExclude>src/test/resources/test-documents/file-list.txt</inputExclude>
             
<inputExclude>src/test/resources/test-documents/ang20150420t182050_corr_v1e_img.hdr</inputExclude>
             
<inputExclude>src/test/resources/test-documents/*.pdf</inputExclude>
+            
<inputExclude>src/main/resources/org/apache/tika/metadata/metadata-migration-3x-4x.json</inputExclude>
           </inputExcludes>
         </configuration>
       </plugin>
diff --git 
a/tika-core/src/main/java/org/apache/tika/metadata/filter/LegacyKeyMigrationFilter.java
 
b/tika-core/src/main/java/org/apache/tika/metadata/filter/LegacyKeyMigrationFilter.java
new file mode 100644
index 0000000000..02d38f7ce8
--- /dev/null
+++ 
b/tika-core/src/main/java/org/apache/tika/metadata/filter/LegacyKeyMigrationFilter.java
@@ -0,0 +1,185 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.tika.metadata.filter;
+
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.UnaryOperator;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.tika.annotation.TikaComponent;
+import org.apache.tika.metadata.Metadata;
+import org.apache.tika.metadata.TikaCoreProperties;
+
+/**
+ * Rewrites 4.x metadata keys back to their 3.x spellings (or vice versa) so 
consumers pinned to 3.x
+ * key names keep working after the 4.0 rename break. Opt-in; enable it in the 
metadata-filter chain
+ * and it rewrites at the emit edge. Because it runs inside the {@link 
MetadataFilter} trusted bracket,
+ * it may write reserved (e.g. {@code X-TIKA:}/{@code tk:}) keys that a plain 
String write couldn't.
+ *
+ * <p><b>Data-driven, not hand-coded.</b> The renames come from the committed 
migration table
+ * (generated by joining the 3.x and 4.x field-attributed key tables — 
TIKA-4797). Three tiers:
+ * <ul>
+ *   <li><b>flat renames</b> — the enumerated key-for-key changes (the 
bulk);</li>
+ *   <li><b>drops</b> — 3.x keys 4.x no longer emits (only relevant on 
ingest);</li>
+ *   <li><b>prefix rules</b> — the open families whose suffix also transforms
+ *       ({@code tk:exception:}/{@code tk:warn:} snake&harr;kebab, {@code 
tk:digest:} algorithm names).</li>
+ * </ul>
+ * Unmapped keys pass through unchanged (this is a compatibility bridge, not 
an allow-list).
+ *
+ * <p><b>Skeleton status (TIKA-4799):</b> the flat/drop/passthrough mechanism 
is complete; the
+ * bundled table and the concrete prefix rules land with the rename PRs (the 
table resource is absent
+ * until then, so the default filter is a safe no-op). See {@link 
#prefixRules} for where the
+ * digest/exception rules slot in.
+ */
+@TikaComponent
+public class LegacyKeyMigrationFilter extends MetadataFilterBase {
+
+    /** V4_TO_V3 = egress (4.x output rewritten to 3.x keys, the BWC case); 
V3_TO_V4 = ingest. */
+    public enum Direction { V4_TO_V3, V3_TO_V4 }
+
+    /** Generated by the TIKA-4797 migration join; deposited into tika-core 
resources when renames land. */
+    static final String DEFAULT_TABLE = 
"/org/apache/tika/metadata/metadata-migration-3x-4x.json";
+
+    // {"v3":"...","v4":"..."} ; v4 == "DROPPED" marks a 3.x key with no 4.x 
successor.
+    private static final Pattern ROW =
+            Pattern.compile("\\{\"v3\":\"(.*?)\",\"v4\":\"(.*?)\"}");
+
+    // 4.x digest keys use the JCA name (DigestDef.getJavaName); 3.x used the 
enum name. MD2/MD5 match.
+    private static final Map<String, String> DIGEST_ALG_V4_TO_V3 = Map.of(
+            "SHA-1", "SHA1", "SHA-256", "SHA256", "SHA-384", "SHA384", 
"SHA-512", "SHA512",
+            "SHA3-256", "SHA3_256", "SHA3-384", "SHA3_384", "SHA3-512", 
"SHA3_512");
+    private static final String V4_DIGEST = 
TikaCoreProperties.TIKA_META_PREFIX + "digest:";
+    private static final String V3_DIGEST = 
TikaCoreProperties.LEGACY_TIKA_META_PREFIX + "digest:";
+
+    public static class Config {
+        public Direction direction = Direction.V4_TO_V3;
+        public String table = DEFAULT_TABLE;
+    }
+
+    private final Map<String, String> renames;   // source key -> target key 
(direction applied)
+    private final Set<String> drops;             // source keys to remove 
(ingest only)
+    private final List<UnaryOperator<String>> prefixRules;
+
+    public LegacyKeyMigrationFilter() {
+        this(new Config());
+    }
+
+    public LegacyKeyMigrationFilter(Config config) {
+        this(loadTable(config.table), config.direction);
+    }
+
+    /** Test/explicit hook. {@code table} is v3-&gt;v4 (with {@code 
null}/"DROPPED" = dropped). */
+    LegacyKeyMigrationFilter(Map<String, String> table, Direction direction) {
+        this.renames = new HashMap<>();
+        this.drops = new HashSet<>();
+        for (Map.Entry<String, String> e : table.entrySet()) {
+            String v3 = e.getKey();
+            String v4 = e.getValue();
+            boolean dropped = v4 == null || "DROPPED".equals(v4);
+            if (direction == Direction.V4_TO_V3) {
+                if (!dropped) {
+                    renames.put(v4, v3);       // 4.x key -> 3.x key
+                }
+            } else {                            // V3_TO_V4
+                if (dropped) {
+                    drops.add(v3);
+                } else {
+                    renames.put(v3, v4);
+                }
+            }
+        }
+        // Digest keys have no declaring field, so they aren't in the flat 
table -- rewrite them by
+        // prefix rule instead. (Exception/warn keys ARE enumerated in the 
table.)
+        this.prefixRules = new ArrayList<>();
+        this.prefixRules.add(digestRule(direction));
+    }
+
+    @Override
+    protected void filter(Metadata metadata) {
+        for (String name : metadata.names()) {          // names() returns a 
snapshot copy
+            if (drops.contains(name)) {
+                metadata.remove(name);
+                continue;
+            }
+            String mapped = renames.get(name);
+            if (mapped == null) {
+                for (UnaryOperator<String> rule : prefixRules) {
+                    String r = rule.apply(name);
+                    if (r != null) {
+                        mapped = r;
+                        break;
+                    }
+                }
+            }
+            if (mapped != null && !mapped.equals(name)) {
+                String[] values = metadata.getValues(name);
+                metadata.remove(name);
+                for (String v : values) {
+                    metadata.add(mapped, v);            // trusted context: 
reserved keys allowed
+                }
+            }
+            // unmapped -> pass through unchanged
+        }
+    }
+
+    private static Map<String, String> loadTable(String resource) {
+        Map<String, String> table = new HashMap<>();
+        try (InputStream in = 
LegacyKeyMigrationFilter.class.getResourceAsStream(resource)) {
+            if (in == null) {
+                return table;   // not bundled yet -> no-op bridge
+            }
+            Matcher m = ROW.matcher(new String(in.readAllBytes(), 
StandardCharsets.UTF_8));
+            while (m.find()) {
+                table.put(unescape(m.group(1)), unescape(m.group(2)));
+            }
+        } catch (Exception e) {
+            throw new IllegalStateException("could not read migration table " 
+ resource, e);
+        }
+        return table;
+    }
+
+    private static String unescape(String s) {
+        return s.replace("\\\"", "\"").replace("\\\\", "\\");
+    }
+
+    /** {@code tk:digest:<jca-alg>[:enc]} &harr; {@code 
X-TIKA:digest:<enum-alg>[:enc]} (encoding kept). */
+    private static UnaryOperator<String> digestRule(Direction direction) {
+        boolean egress = direction == Direction.V4_TO_V3;
+        String fromPrefix = egress ? V4_DIGEST : V3_DIGEST;
+        String toPrefix = egress ? V3_DIGEST : V4_DIGEST;
+        Map<String, String> alg = new HashMap<>();
+        DIGEST_ALG_V4_TO_V3.forEach((v4, v3) -> alg.put(egress ? v4 : v3, 
egress ? v3 : v4));
+        return name -> {
+            if (!name.startsWith(fromPrefix)) {
+                return null;
+            }
+            String rest = name.substring(fromPrefix.length());   // <alg> or 
<alg>:<enc>
+            int c = rest.indexOf(':');
+            String a = c < 0 ? rest : rest.substring(0, c);
+            String enc = c < 0 ? "" : rest.substring(c);
+            return toPrefix + alg.getOrDefault(a, a) + enc;
+        };
+    }
+}
diff --git 
a/tika-core/src/main/resources/org/apache/tika/metadata/metadata-migration-3x-4x.json
 
b/tika-core/src/main/resources/org/apache/tika/metadata/metadata-migration-3x-4x.json
new file mode 100644
index 0000000000..f8c8fc1133
--- /dev/null
+++ 
b/tika-core/src/main/resources/org/apache/tika/metadata/metadata-migration-3x-4x.json
@@ -0,0 +1,137 @@
+[
+{"v3":"Content-Type-Hint","v4":"tk:content-type-hint"},
+{"v3":"Content-Type-Override","v4":"tk:content-type-override"},
+{"v3":"Content-Type-Parser-Override","v4":"tk:content-type-parser-override"},
+{"v3":"Message:BCC-Display-Name","v4":"message:bcc-display-name"},
+{"v3":"Message:BCC-Email","v4":"message:bcc-email"},
+{"v3":"Message:BCC-Name","v4":"message:bcc-name"},
+{"v3":"Message:CC-Display-Name","v4":"message:cc-display-name"},
+{"v3":"Message:CC-Email","v4":"message:cc-email"},
+{"v3":"Message:CC-Name","v4":"message:cc-name"},
+{"v3":"Message:From-Email","v4":"message:from-email"},
+{"v3":"Message:From-Name","v4":"message:from-name"},
+{"v3":"Message:To-Display-Name","v4":"message:to-display-name"},
+{"v3":"Message:To-Email","v4":"message:to-email"},
+{"v3":"Message:To-Name","v4":"message:to-name"},
+{"v3":"X-TIKA:EXCEPTION:container_exception","v4":"tk:exception:container-exception"},
+{"v3":"X-TIKA:EXCEPTION:embedded_bytes_exception","v4":"tk:exception:embedded-bytes-exception"},
+{"v3":"X-TIKA:EXCEPTION:embedded_exception","v4":"tk:exception:embedded-exception"},
+{"v3":"X-TIKA:EXCEPTION:embedded_stream_exception","v4":"tk:exception:embedded-stream-exception"},
+{"v3":"X-TIKA:EXCEPTION:embedded_warning","v4":"tk:exception:embedded-warning"},
+{"v3":"X-TIKA:EXCEPTION:warn","v4":"tk:exception:warn"},
+{"v3":"X-TIKA:EXCEPTION:write_limit_reached","v4":"tk:exception:write-limit-reached"},
+{"v3":"X-TIKA:Parsed-By","v4":"tk:parsed-by"},
+{"v3":"X-TIKA:Parsed-By-Full-Set","v4":"tk:parsed-by-full-set"},
+{"v3":"X-TIKA:WARN:truncated_metadata","v4":"tk:warn:truncated-metadata"},
+{"v3":"X-TIKA:content","v4":"tk:content"},
+{"v3":"X-TIKA:content_handler","v4":"tk:content-handler"},
+{"v3":"X-TIKA:detectedEncoding","v4":"tk:detected-encoding"},
+{"v3":"X-TIKA:detected_language","v4":"tk:detected-language"},
+{"v3":"X-TIKA:detected_language_confidence","v4":"tk:detected-language-confidence"},
+{"v3":"X-TIKA:detected_language_confidence_raw","v4":"tk:detected-language-confidence-raw"},
+{"v3":"X-TIKA:embedded_depth","v4":"tk:embedded-depth"},
+{"v3":"X-TIKA:embedded_id","v4":"tk:embedded-id"},
+{"v3":"X-TIKA:embedded_id_path","v4":"tk:embedded-id-path"},
+{"v3":"X-TIKA:embedded_resource_path","v4":"tk:embedded-resource-path"},
+{"v3":"X-TIKA:encodingDetector","v4":"tk:encoding-detector"},
+{"v3":"X-TIKA:encrypted","v4":"tk:encrypted"},
+{"v3":"X-TIKA:final_embedded_resource_path","v4":"tk:final-embedded-resource-path"},
+{"v3":"X-TIKA:internalPath","v4":"tk:internal-path"},
+{"v3":"X-TIKA:origResourceName","v4":"tk:orig-resource-name"},
+{"v3":"X-TIKA:parse_time_millis","v4":"tk:parse-time-millis"},
+{"v3":"X-TIKA:pipes_result","v4":"tk:pipes-result"},
+{"v3":"X-TIKA:sourcePath","v4":"tk:source-path"},
+{"v3":"X-TIKA:versionCount","v4":"tk:version-count"},
+{"v3":"X-TIKA:versionNumber","v4":"tk:version-number"},
+{"v3":"access_permission:assemble_document","v4":"access-permission:assemble-document"},
+{"v3":"access_permission:can_modify","v4":"access-permission:can-modify"},
+{"v3":"access_permission:can_print","v4":"access-permission:can-print"},
+{"v3":"access_permission:can_print_faithful","v4":"access-permission:can-print-faithful"},
+{"v3":"access_permission:extract_content","v4":"access-permission:extract-content"},
+{"v3":"access_permission:extract_for_accessibility","v4":"access-permission:extract-for-accessibility"},
+{"v3":"access_permission:fill_in_form","v4":"access-permission:fill-in-form"},
+{"v3":"access_permission:modify_annotations","v4":"access-permission:modify-annotations"},
+{"v3":"database:column_count","v4":"database:column-count"},
+{"v3":"database:column_name","v4":"database:column-name"},
+{"v3":"database:row_count","v4":"database:row-count"},
+{"v3":"database:table_name","v4":"database:table-name"},
+{"v3":"embeddedResourceType","v4":"tk:embedded-resource-type"},
+{"v3":"extended-properties:DocSecurityString","v4":"extended-properties:doc-security-string"},
+{"v3":"extended-properties:HiddedSlides","v4":"extended-properties:HiddenSlides"},
+{"v3":"hasSignature","v4":"tk:has-signature"},
+{"v3":"html_meta:scriptSrc","v4":"html:scriptSrc"},
+{"v3":"imagereader:NumImages","v4":"tk:num-images"},
+{"v3":"meta:mapi-from-representing-email","v4":"mapi:from-representing-email"},
+{"v3":"meta:mapi-from-representing-name","v4":"mapi:from-representing-name"},
+{"v3":"meta:mapi-importance","v4":"mapi:importance"},
+{"v3":"meta:mapi-is-flagged","v4":"mapi:is-flagged"},
+{"v3":"meta:mapi-message-class","v4":"mapi:message-class"},
+{"v3":"meta:mapi-msg-client-submit-time","v4":"mapi:msg-submission-accepted-at-time"},
+{"v3":"meta:mapi-recipients-string","v4":"mapi:recipients-string"},
+{"v3":"meta:mapi-sent-by-server-type","v4":"mapi:sent-by-server-type"},
+{"v3":"msoffice:ocxName","v4":"msoffice:ocx-name"},
+{"v3":"msoffice:progID","v4":"msoffice:prog-id"},
+{"v3":"pdf:PDFExtensionVersion","v4":"pdf:pdf-extension-version"},
+{"v3":"pdf:PDFVersion","v4":"pdf:pdf-version"},
+{"v3":"pdf:actionTrigger","v4":"pdf:action-trigger"},
+{"v3":"pdf:actionTriggers","v4":"pdf:action-triggers"},
+{"v3":"pdf:actionTypes","v4":"pdf:action-types"},
+{"v3":"pdf:annotationSubtypes","v4":"pdf:annotation-subtypes"},
+{"v3":"pdf:annotationTypes","v4":"pdf:annotation-types"},
+{"v3":"pdf:associatedFileRelationship","v4":"pdf:associated-file-relationship"},
+{"v3":"pdf:charsPerPage","v4":"pdf:chars-per-page"},
+{"v3":"pdf:containsDamagedFont","v4":"pdf:contains-damaged-font"},
+{"v3":"pdf:containsNonEmbeddedFont","v4":"pdf:contains-non-embedded-font"},
+{"v3":"pdf:docinfo:creator_tool","v4":"pdf:docinfo:creator-tool"},
+{"v3":"pdf:embeddedFileAnnotationType","v4":"pdf:embedded-file-annotation-type"},
+{"v3":"pdf:embeddedFileDescription","v4":"pdf:embedded-file-description"},
+{"v3":"pdf:embeddedFileSubtype","v4":"pdf:embedded-file-subtype"},
+{"v3":"pdf:eofOffsets","v4":"pdf:eof-offsets"},
+{"v3":"pdf:has3D","v4":"pdf:has-3d"},
+{"v3":"pdf:hasAcroFormFields","v4":"pdf:has-acro-form-fields"},
+{"v3":"pdf:hasCollection","v4":"pdf:has-collection"},
+{"v3":"pdf:hasMarkedContent","v4":"pdf:has-marked-content"},
+{"v3":"pdf:hasSignatureFields","v4":"pdf:has-signature-fields"},
+{"v3":"pdf:hasXFA","v4":"pdf:has-xfa"},
+{"v3":"pdf:hasXMP","v4":"pdf:has-xmp"},
+{"v3":"pdf:incrementalUpdateCount","v4":"pdf:incremental-update-count"},
+{"v3":"pdf:incrementalUpdateNumber","v4":"pdf:incremental-update-number"},
+{"v3":"pdf:jsName","v4":"pdf:js-name"},
+{"v3":"pdf:num3DAnnotations","v4":"pdf:num-3d-annotations"},
+{"v3":"pdf:ocrPageCount","v4":"pdf:ocr-page-count"},
+{"v3":"pdf:overallPercentageUnmappedUnicodeChars","v4":"pdf:overall-percentage-unmapped-unicode-chars"},
+{"v3":"pdf:totalUnmappedUnicodeChars","v4":"pdf:total-unmapped-unicode-chars"},
+{"v3":"pdf:unmappedUnicodeCharsPerPage","v4":"pdf:unmapped-unicode-chars-per-page"},
+{"v3":"pdf:xmpLocation","v4":"pdf:xmp-location"},
+{"v3":"pdfa:PDFVersion","v4":"pdfa:pdf-version"},
+{"v3":"pst:discriptorNodeId","v4":"pst:discriptor-node-id"},
+{"v3":"pst:folderPath","v4":"DROPPED"},
+{"v3":"pst:isValid","v4":"pst:is-valid"},
+{"v3":"rendering:Rendered-By","v4":"tk:rendering:rendered-by"},
+{"v3":"rendering:rendering-time-ms","v4":"tk:rendering:rendering-time-ms"},
+{"v3":"rtf_meta:contains_encapsulated_html","v4":"rtf:contains-encapsulated-html"},
+{"v3":"rtf_meta:emb_app_version","v4":"rtf:embedded-app-version"},
+{"v3":"rtf_meta:emb_class","v4":"rtf:embedded-class"},
+{"v3":"rtf_meta:emb_item","v4":"rtf:embedded-item"},
+{"v3":"rtf_meta:emb_topic","v4":"rtf:embedded-topic"},
+{"v3":"rtf_meta:thumbnail","v4":"rtf:thumbnail"},
+{"v3":"signature:contact-info","v4":"tk:signature:contact-info"},
+{"v3":"signature:date","v4":"tk:signature:date"},
+{"v3":"signature:filter","v4":"tk:signature:filter"},
+{"v3":"signature:location","v4":"tk:signature:location"},
+{"v3":"signature:name","v4":"tk:signature:name"},
+{"v3":"signature:reason","v4":"tk:signature:reason"},
+{"v3":"tika_pg:page_number","v4":"tk:page:number"},
+{"v3":"tika_pg:page_rotation","v4":"tk:page:rotation"},
+{"v3":"wordperfect:Build","v4":"quattropro:build"},
+{"v3":"wordperfect:Encrypted","v4":"wordperfect:encrypted"},
+{"v3":"wordperfect:FileId","v4":"wordperfect:file-id"},
+{"v3":"wordperfect:FileSize","v4":"wordperfect:file-size"},
+{"v3":"wordperfect:FileType","v4":"wordperfect:file-type"},
+{"v3":"wordperfect:Id","v4":"quattropro:id"},
+{"v3":"wordperfect:LowestVersion","v4":"quattropro:lowest-version"},
+{"v3":"wordperfect:MajorVersion","v4":"wordperfect:major-version"},
+{"v3":"wordperfect:MinorVersion","v4":"wordperfect:minor-version"},
+{"v3":"wordperfect:ProductType","v4":"wordperfect:product-type"},
+{"v3":"wordperfect:Version","v4":"quattropro:version"}
+]
diff --git 
a/tika-core/src/test/java/org/apache/tika/metadata/filter/LegacyKeyMigrationFilterTest.java
 
b/tika-core/src/test/java/org/apache/tika/metadata/filter/LegacyKeyMigrationFilterTest.java
new file mode 100644
index 0000000000..d1ca09c3d8
--- /dev/null
+++ 
b/tika-core/src/test/java/org/apache/tika/metadata/filter/LegacyKeyMigrationFilterTest.java
@@ -0,0 +1,148 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.tika.metadata.filter;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+import org.apache.tika.metadata.Metadata;
+import org.apache.tika.metadata.filter.LegacyKeyMigrationFilter.Direction;
+
+public class LegacyKeyMigrationFilterTest {
+
+    private static List<Metadata> apply(LegacyKeyMigrationFilter f, Metadata 
m) throws Exception {
+        List<Metadata> list = new ArrayList<>();
+        list.add(m);
+        f.filter(list);   // public entry sets the trusted bracket
+        return list;
+    }
+
+    @Test
+    public void egressRenamesAndPassesThrough() throws Exception {
+        // table is v3 -> v4; egress rewrites 4.x output back to 3.x keys.
+        var f = new LegacyKeyMigrationFilter(
+                Map.of("pdf:hasMarkedContent", "pdf:has-marked-content"), 
Direction.V4_TO_V3);
+        Metadata m = new Metadata();
+        m.set("pdf:has-marked-content", "true");   // 4.x key
+        m.set("dc:title", "Hello");                // unmapped -> passthrough
+        apply(f, m);
+        assertEquals("true", m.get("pdf:hasMarkedContent"));
+        assertNull(m.get("pdf:has-marked-content"));
+        assertEquals("Hello", m.get("dc:title"));
+    }
+
+    @Test
+    public void egressWritesReservedTarget() throws Exception {
+        // Proves the trusted bracket: the 3.x target is a reserved (X-TIKA:) 
key a plain String
+        // write would be dropped for.
+        var f = new LegacyKeyMigrationFilter(
+                Map.of("X-TIKA:Parsed-By", "tk:parsed-by"), 
Direction.V4_TO_V3);
+        Metadata m = new Metadata();
+        // Post-4.0 tk: is reserved too, so seed it the trusted way a parse 
would (a raw String set
+        // to a reserved key is dropped by the guard); the point of the test 
is the X-TIKA: target.
+        m.setTrusted(true);
+        m.set("tk:parsed-by", "org.apache.tika.parser.DefaultParser");
+        m.setTrusted(false);
+        apply(f, m);
+        assertEquals("org.apache.tika.parser.DefaultParser", 
m.get("X-TIKA:Parsed-By"));
+        assertNull(m.get("tk:parsed-by"));
+    }
+
+    @Test
+    public void ingestDropsRemovedKeysAndRenames() throws Exception {
+        var f = new LegacyKeyMigrationFilter(Map.of(
+                "pst:folderPath", "DROPPED",
+                "pdf:hasMarkedContent", "pdf:has-marked-content"), 
Direction.V3_TO_V4);
+        Metadata m = new Metadata();
+        m.set("pst:folderPath", "/Inbox/Sub");     // 3.x key with no 4.x 
successor
+        m.set("pdf:hasMarkedContent", "true");     // 3.x key -> 4.x
+        apply(f, m);
+        assertNull(m.get("pst:folderPath"));       // dropped
+        assertEquals("true", m.get("pdf:has-marked-content"));
+    }
+
+    @Test
+    public void multiValuedKeysArePreserved() throws Exception {
+        var f = new LegacyKeyMigrationFilter(
+                Map.of("meta:mapi-importance", "mapi:importance"), 
Direction.V4_TO_V3);
+        Metadata m = new Metadata();
+        m.add("mapi:importance", "1");
+        m.add("mapi:importance", "2");
+        apply(f, m);
+        assertArrayEquals(new String[]{"1", "2"}, 
m.getValues("meta:mapi-importance"));
+    }
+
+    @Test
+    public void emptyTableIsNoOp() throws Exception {
+        var f = new LegacyKeyMigrationFilter(Map.of(), Direction.V4_TO_V3);
+        Metadata m = new Metadata();
+        m.set("dc:title", "Hello");
+        apply(f, m);
+        assertEquals("Hello", m.get("dc:title"));
+    }
+
+    @Test
+    public void loadsBundledTableAndRewritesRealKeys() throws Exception {
+        // default ctor loads the committed metadata-migration-3x-4x.json; 
egress (V4_TO_V3).
+        LegacyKeyMigrationFilter f = new LegacyKeyMigrationFilter();
+        Metadata m = new Metadata();
+        m.setTrusted(true);
+        m.set("tk:content", "hello");              // reserved 4.x key -> 
X-TIKA:content
+        m.setTrusted(false);
+        m.set("message:from-email", "[email protected]");    // non-reserved 4.x key 
-> Message:From-Email
+        apply(f, m);
+        assertEquals("hello", m.get("X-TIKA:content"));
+        assertNull(m.get("tk:content"));
+        assertEquals("[email protected]", m.get("Message:From-Email"));
+    }
+
+    @Test
+    public void digestPrefixRuleEgress() throws Exception {
+        // digest keys have no declaring field, so not in the flat table -> 
handled by the prefix rule.
+        var f = new LegacyKeyMigrationFilter(Map.of(), Direction.V4_TO_V3);
+        Metadata m = new Metadata();
+        m.setTrusted(true);
+        m.set("tk:digest:SHA-256", "abc");
+        m.set("tk:digest:SHA-256:BASE32", "def");   // encoding suffix 
preserved
+        m.set("tk:digest:MD5", "ghi");              // MD5 unchanged between 
3.x/4.x
+        m.setTrusted(false);
+        apply(f, m);
+        assertEquals("abc", m.get("X-TIKA:digest:SHA256"));
+        assertEquals("def", m.get("X-TIKA:digest:SHA256:BASE32"));
+        assertEquals("ghi", m.get("X-TIKA:digest:MD5"));
+        assertNull(m.get("tk:digest:SHA-256"));
+    }
+
+    @Test
+    public void digestPrefixRuleIngest() throws Exception {
+        var f = new LegacyKeyMigrationFilter(Map.of(), Direction.V3_TO_V4);
+        Metadata m = new Metadata();
+        m.setTrusted(true);
+        m.set("X-TIKA:digest:SHA3_512", "z");
+        m.setTrusted(false);
+        apply(f, m);
+        assertEquals("z", m.get("tk:digest:SHA3-512"));
+        assertNull(m.get("X-TIKA:digest:SHA3_512"));
+    }
+}
diff --git 
a/tika-metadata-schema/src/main/java/org/apache/tika/metadata/schema/MigrationTableGenerator.java
 
b/tika-metadata-schema/src/main/java/org/apache/tika/metadata/schema/MigrationTableGenerator.java
new file mode 100644
index 0000000000..28159524f0
--- /dev/null
+++ 
b/tika-metadata-schema/src/main/java/org/apache/tika/metadata/schema/MigrationTableGenerator.java
@@ -0,0 +1,122 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.tika.metadata.schema;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeMap;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * TIKA-4797 / TIKA-4799. Produces the 3.x-&gt;4.x metadata-key migration table
+ * ({@code metadata-migration-3x-4x.json}) that {@code 
LegacyKeyMigrationFilter} loads, by joining the
+ * committed 3.x and 4.x {@code {class, field, key}} field tables on field 
identity (Class#field):
+ * <ul>
+ *   <li>same field, changed key -&gt; a RENAME (auto);</li>
+ *   <li>fields the join can't bridge (moves/drops, or fields renamed on both 
sides) -&gt; taken from the
+ *       adjudicated {@code migration-overlay.tsv} ({@code v4 == DROPPED} = 
4.x no longer emits it).</li>
+ * </ul>
+ * Core scope only ({@code org.apache.tika.metadata.*}) until the 3.x table is 
widened past its v1.
+ *
+ * <p>Dependency-free by design: tika-core carries the filter and must stay 
Jackson-free, so both this
+ * generator and the filter emit/parse the flat JSON by hand. {@code 
MetadataMigrationTableTest}
+ * regenerates in-memory and asserts the committed tika-core copy has not 
drifted.
+ *
+ * <pre>
+ *   java ... MigrationTableGenerator &lt;3x-fields.json&gt; 
&lt;4x-fields.json&gt; &lt;overlay.tsv&gt; &lt;out.json&gt;
+ * </pre>
+ */
+public final class MigrationTableGenerator {
+
+    private static final Pattern ROW = Pattern.compile(
+            
"\\{\"class\":\"(.*?)\",\"field\":\"(.*?)\",\"key\":\"((?:[^\"\\\\]|\\\\.)*)\"}");
+    private static final String CORE = "org.apache.tika.metadata.";
+
+    private MigrationTableGenerator() {
+    }
+
+    /** Build the sorted {@code v3 -> v4} migration JSON from the three input 
contents. */
+    public static String generate(String threeFieldsJson, String 
fourFieldsJson, String overlayTsv) {
+        Map<String, String> three = readFields(threeFieldsJson);   // 
class#field -> key
+        Map<String, String> four = readFields(fourFieldsJson);
+        Set<String> v4keys = new HashSet<>(four.values());
+
+        TreeMap<String, String> table = new TreeMap<>();           // v3 -> v4 
(or "DROPPED")
+        for (Map.Entry<String, String> e : three.entrySet()) {     // 
auto-renames by field identity
+            String key4 = four.get(e.getKey());
+            if (key4 != null && !e.getValue().equals(key4)) {
+                table.put(e.getValue(), key4);
+            }
+        }
+        for (String line : overlayTsv.split("\n")) {               // 
adjudicated moves/drops; overlay wins
+            String t = line.strip();
+            int tab = t.indexOf('\t');
+            if (t.isEmpty() || t.startsWith("#") || tab < 0) {
+                continue;
+            }
+            table.put(t.substring(0, tab).strip(), t.substring(tab + 
1).strip());
+        }
+        for (Map.Entry<String, String> e : table.entrySet()) {     // every 
target must be a real 4.x key
+            if (!"DROPPED".equals(e.getValue()) && 
!v4keys.contains(e.getValue())) {
+                throw new IllegalStateException(
+                        "migration target is not a 4.x key: " + e.getKey() + " 
-> " + e.getValue());
+            }
+        }
+        StringBuilder sb = new StringBuilder("[\n");
+        int i = 0;
+        int n = table.size();
+        for (Map.Entry<String, String> e : table.entrySet()) {
+            sb.append("{\"v3\":\"").append(esc(e.getKey()))
+              .append("\",\"v4\":\"").append(esc(e.getValue())).append("\"}")
+              .append(++i < n ? "," : "").append('\n');
+        }
+        return sb.append("]\n").toString();
+    }
+
+    /** Core-scoped {@code class#field -> key} from a {class,field,key} table. 
*/
+    private static Map<String, String> readFields(String json) {
+        Map<String, String> m = new LinkedHashMap<>();
+        Matcher mt = ROW.matcher(json);
+        while (mt.find()) {
+            if (mt.group(1).startsWith(CORE)) {
+                m.put(mt.group(1) + "#" + mt.group(2), unescape(mt.group(3)));
+            }
+        }
+        return m;
+    }
+
+    private static String esc(String s) {
+        return s.replace("\\", "\\\\").replace("\"", "\\\"");
+    }
+
+    private static String unescape(String s) {
+        return s.replace("\\\"", "\"").replace("\\\\", "\\");
+    }
+
+    public static void main(String[] args) throws Exception {
+        String json = generate(Files.readString(Path.of(args[0])), 
Files.readString(Path.of(args[1])),
+                Files.readString(Path.of(args[2])));
+        Files.writeString(Path.of(args[3]), json);
+        System.out.println("wrote " + args[3] + "  rows="
+                + json.lines().filter(l -> l.startsWith("{\"v3\"")).count());
+    }
+}
diff --git 
a/tika-metadata-schema/src/test/java/org/apache/tika/metadata/schema/MetadataMigrationTableTest.java
 
b/tika-metadata-schema/src/test/java/org/apache/tika/metadata/schema/MetadataMigrationTableTest.java
new file mode 100644
index 0000000000..0bd7c384e1
--- /dev/null
+++ 
b/tika-metadata-schema/src/test/java/org/apache/tika/metadata/schema/MetadataMigrationTableTest.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.tika.metadata.schema;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * The CI gate for the 3.x-&gt;4.x migration table (TIKA-4797 / TIKA-4799): 
regenerates it from the
+ * committed field tables + overlay and asserts tika-core's bundled {@code 
metadata-migration-3x-4x.json}
+ * has not drifted. The migration table is committed in tika-core (where the 
filter lives, and which is
+ * Jackson-free); the inputs and this gate live here, alongside the other 
schema registries.
+ */
+public class MetadataMigrationTableTest {
+
+    private static final String THREE_X = 
"/org/apache/tika/metadata/metadata-keys-3x.json";
+    private static final String FOUR_X = 
"/org/apache/tika/metadata/metadata-key-fields.json";
+    private static final String OVERLAY = 
"/org/apache/tika/metadata/migration-overlay.tsv";
+    private static final String COMMITTED = 
"/org/apache/tika/metadata/metadata-migration-3x-4x.json";
+
+    @Test
+    public void committedMigrationTableMatchesRegeneration() throws Exception {
+        String regenerated = MigrationTableGenerator.generate(read(THREE_X), 
read(FOUR_X), read(OVERLAY));
+        assertEquals(read(COMMITTED), regenerated,
+                "metadata-migration-3x-4x.json (in tika-core) is stale. 
Regenerate with "
+                        + "MigrationTableGenerator and commit the result.");
+    }
+
+    private static String read(String resource) throws Exception {
+        try (InputStream in = 
MetadataMigrationTableTest.class.getResourceAsStream(resource)) {
+            if (in == null) {
+                throw new IllegalStateException("missing resource on the test 
classpath: " + resource);
+            }
+            return new String(in.readAllBytes(), StandardCharsets.UTF_8);
+        }
+    }
+}
diff --git 
a/tika-metadata-schema/src/test/resources/org/apache/tika/metadata/metadata-keys-3x.json
 
b/tika-metadata-schema/src/test/resources/org/apache/tika/metadata/metadata-keys-3x.json
new file mode 100644
index 0000000000..78de3ef835
--- /dev/null
+++ 
b/tika-metadata-schema/src/test/resources/org/apache/tika/metadata/metadata-keys-3x.json
@@ -0,0 +1,550 @@
+[
+  
{"class":"org.apache.tika.detect.FileCommandDetector","field":"FILE_MIME","key":"file:mime"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"ASSEMBLE_DOCUMENT","key":"access_permission:assemble_document"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"CAN_MODIFY","key":"access_permission:can_modify"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"CAN_MODIFY_ANNOTATIONS","key":"access_permission:modify_annotations"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"CAN_PRINT","key":"access_permission:can_print"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"CAN_PRINT_FAITHFUL","key":"access_permission:can_print_faithful"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"EXTRACT_CONTENT","key":"access_permission:extract_content"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"EXTRACT_FOR_ACCESSIBILITY","key":"access_permission:extract_for_accessibility"},
+  
{"class":"org.apache.tika.metadata.AccessPermissions","field":"FILL_IN_FORM","key":"access_permission:fill_in_form"},
+  
{"class":"org.apache.tika.metadata.Database","field":"COLUMN_COUNT","key":"database:column_count"},
+  
{"class":"org.apache.tika.metadata.Database","field":"COLUMN_NAME","key":"database:column_name"},
+  
{"class":"org.apache.tika.metadata.Database","field":"ROW_COUNT","key":"database:row_count"},
+  
{"class":"org.apache.tika.metadata.Database","field":"TABLE_NAME","key":"database:table_name"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"CONTRIBUTOR","key":"dc:contributor"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"COVERAGE","key":"dc:coverage"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"CREATED","key":"dcterms:created"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"CREATOR","key":"dc:creator"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"DATE","key":"dc:date"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"DESCRIPTION","key":"dc:description"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"FORMAT","key":"dc:format"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"IDENTIFIER","key":"dc:identifier"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"LANGUAGE","key":"dc:language"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"MODIFIED","key":"dcterms:modified"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"PUBLISHER","key":"dc:publisher"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"RELATION","key":"dc:relation"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"RIGHTS","key":"dc:rights"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"SOURCE","key":"dc:source"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"SUBJECT","key":"dc:subject"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"TITLE","key":"dc:title"},
+  
{"class":"org.apache.tika.metadata.DublinCore","field":"TYPE","key":"dc:type"},
+  
{"class":"org.apache.tika.metadata.Epub","field":"RENDITION_LAYOUT","key":"epub:rendition:layout"},
+  
{"class":"org.apache.tika.metadata.Epub","field":"VERSION","key":"epub:version"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"EXIT_VALUE","key":"external-process:exit-value"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"IS_TIMEOUT","key":"external-process:timeout"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"STD_ERR","key":"external-process:stderr"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"STD_ERR_IS_TRUNCATED","key":"external-process:stderr-truncated"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"STD_ERR_LENGTH","key":"external-process:stderr-length"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"STD_OUT","key":"external-process:stdout"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"STD_OUT_IS_TRUNCATED","key":"external-process:stdout-truncated"},
+  
{"class":"org.apache.tika.metadata.ExternalProcess","field":"STD_OUT_LENGTH","key":"external-process:stdout-length"},
+  
{"class":"org.apache.tika.metadata.FileSystem","field":"ACCESSED","key":"fs:accessed"},
+  
{"class":"org.apache.tika.metadata.FileSystem","field":"CREATED","key":"fs:created"},
+  
{"class":"org.apache.tika.metadata.FileSystem","field":"MODIFIED","key":"fs:modified"},
+  
{"class":"org.apache.tika.metadata.Font","field":"FONT_NAME","key":"font:name"},
+  
{"class":"org.apache.tika.metadata.Geographic","field":"ALTITUDE","key":"geo:alt"},
+  
{"class":"org.apache.tika.metadata.Geographic","field":"LATITUDE","key":"geo:lat"},
+  
{"class":"org.apache.tika.metadata.Geographic","field":"LONGITUDE","key":"geo:long"},
+  
{"class":"org.apache.tika.metadata.Geographic","field":"TIMESTAMP","key":"geo:timestamp"},
+  
{"class":"org.apache.tika.metadata.HTML","field":"SCRIPT_SOURCE","key":"html_meta:scriptSrc"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ADDITIONAL_MODEL_INFO","key":"Iptc4xmpExt:AddlModelInfo"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ARTWORK_OR_OBJECT","key":"Iptc4xmpExt:ArtworkOrObject"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ARTWORK_OR_OBJECT_DETAIL_COPYRIGHT_NOTICE","key":"Iptc4xmpExt:AOCopyrightNotice"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ARTWORK_OR_OBJECT_DETAIL_CREATOR","key":"Iptc4xmpExt:AOCreator"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ARTWORK_OR_OBJECT_DETAIL_DATE_CREATED","key":"Iptc4xmpExt:AODateCreated"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ARTWORK_OR_OBJECT_DETAIL_SOURCE","key":"Iptc4xmpExt:AOSource"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ARTWORK_OR_OBJECT_DETAIL_SOURCE_INVENTORY_NUMBER","key":"Iptc4xmpExt:AOSourceInvNo"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ARTWORK_OR_OBJECT_DETAIL_TITLE","key":"Iptc4xmpExt:AOTitle"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CATEGORY","key":"photoshop:Category"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CITY","key":"photoshop:City"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_ADDRESS","key":"Iptc4xmpCore:CiAdrExtadr"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_CITY","key":"Iptc4xmpCore:CiAdrCity"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_COUNTRY","key":"Iptc4xmpCore:CiAdrCtry"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_EMAIL","key":"Iptc4xmpCore:CiEmailWork"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_PHONE","key":"Iptc4xmpCore:CiTelWork"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_POSTAL_CODE","key":"Iptc4xmpCore:CiAdrPcode"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_STATE_PROVINCE","key":"Iptc4xmpCore:CiAdrRegion"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTACT_INFO_WEB_URL","key":"Iptc4xmpCore:CiUrlWork"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CONTROLLED_VOCABULARY_TERM","key":"Iptc4xmpExt:CVterm"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"COPYRIGHT_NOTICE","key":"dc:rights"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"COPYRIGHT_OWNER","key":"plus:CopyrightOwner"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"COPYRIGHT_OWNER_ID","key":"plus:CopyrightOwnerID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"COPYRIGHT_OWNER_NAME","key":"plus:CopyrightOwnerName"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"COUNTRY","key":"photoshop:Country"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"COUNTRY_CODE","key":"Iptc4xmpCore:CountryCode"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CREATOR","key":"dc:creator"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CREATORS_CONTACT_INFO","key":"Iptc4xmpCore:CreatorContactInfo"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CREATORS_JOB_TITLE","key":"photoshop:AuthorsPosition"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"CREDIT_LINE","key":"photoshop:Credit"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"DATE_CREATED","key":"photoshop:DateCreated"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"DESCRIPTION","key":"dc:description"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"DESCRIPTION_WRITER","key":"photoshop:CaptionWriter"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"DIGITAL_IMAGE_GUID","key":"Iptc4xmpExt:DigImageGUID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"DIGITAL_SOURCE_FILE_TYPE","key":"Iptc4xmpExt:DigitalSourcefileType"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"DIGITAL_SOURCE_TYPE","key":"Iptc4xmpExt:DigitalSourceType"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"EVENT","key":"Iptc4xmpExt:Event"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"HEADLINE","key":"photoshop:Headline"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_CREATOR","key":"plus:ImageCreator"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_CREATOR_ID","key":"plus:ImageCreatorID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_CREATOR_NAME","key":"plus:ImageCreatorName"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_REGISTRY_ENTRY","key":"Iptc4xmpExt:RegistryId"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_SUPPLIER","key":"plus:ImageSupplier"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_SUPPLIER_ID","key":"plus:ImageSupplierID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_SUPPLIER_IMAGE_ID","key":"plus:ImageSupplierImageID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IMAGE_SUPPLIER_NAME","key":"plus:ImageSupplierName"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"INSTRUCTIONS","key":"photoshop:Instructions"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"INTELLECTUAL_GENRE","key":"Iptc4xmpCore:IntellectualGenre"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"IPTC_LAST_EDITED","key":"Iptc4xmpExt:IptcLastEdited"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"JOB_ID","key":"photoshop:TransmissionReference"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"KEYWORDS","key":"dc:subject"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR","key":"plus:Licensor"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_CITY","key":"plus:LicensorCity"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_COUNTRY","key":"plus:LicensorCountry"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_EMAIL","key":"plus:LicensorEmail"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_EXTENDED_ADDRESS","key":"plus:LicensorExtendedAddress"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_ID","key":"plus:LicensorID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_NAME","key":"plus:LicensorName"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_POSTAL_CODE","key":"plus:LicensorPostalCode"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_REGION","key":"plus:LicensorRegion"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_STREET_ADDRESS","key":"plus:LicensorStreetAddress"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_TELEPHONE_1","key":"plus:LicensorTelephone1"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_TELEPHONE_2","key":"plus:LicensorTelephone2"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LICENSOR_URL","key":"plus:LicensorURL"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_CREATED","key":"Iptc4xmpExt:LocationCreated"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_CREATED_CITY","key":"Iptc4xmpExt:LocationCreatedCity"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_CREATED_COUNTRY_CODE","key":"Iptc4xmpExt:LocationCreatedCountryCode"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_CREATED_COUNTRY_NAME","key":"Iptc4xmpExt:LocationCreatedCountryName"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_CREATED_PROVINCE_OR_STATE","key":"Iptc4xmpExt:LocationCreatedProvinceState"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_CREATED_SUBLOCATION","key":"Iptc4xmpExt:LocationCreatedSublocation"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_CREATED_WORLD_REGION","key":"Iptc4xmpExt:LocationCreatedWorldRegion"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_SHOWN","key":"Iptc4xmpExt:LocationShown"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_SHOWN_CITY","key":"Iptc4xmpExt:LocationShownCity"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_SHOWN_COUNTRY_CODE","key":"Iptc4xmpExt:LocationShownCountryCode"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_SHOWN_COUNTRY_NAME","key":"Iptc4xmpExt:LocationShownCountryName"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_SHOWN_PROVINCE_OR_STATE","key":"Iptc4xmpExt:LocationShownProvinceState"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_SHOWN_SUBLOCATION","key":"Iptc4xmpExt:LocationShownSublocation"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"LOCATION_SHOWN_WORLD_REGION","key":"Iptc4xmpExt:LocationShownWorldRegion"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"MAX_AVAIL_HEIGHT","key":"Iptc4xmpExt:MaxAvailHeight"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"MAX_AVAIL_WIDTH","key":"Iptc4xmpExt:MaxAvailWidth"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"MINOR_MODEL_AGE_DISCLOSURE","key":"plus:MinorModelAgeDisclosure"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"MODEL_AGE","key":"Iptc4xmpExt:ModelAge"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"MODEL_RELEASE_ID","key":"plus:ModelReleaseID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"MODEL_RELEASE_STATUS","key":"plus:ModelReleaseStatus"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ORGANISATION_CODE","key":"Iptc4xmpExt:OrganisationInImageCode"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"ORGANISATION_NAME","key":"Iptc4xmpExt:OrganisationInImageName"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"PERSON","key":"Iptc4xmpExt:PersonInImage"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"PLUS_VERSION","key":"plus:Version"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"PROPERTY_RELEASE_ID","key":"plus:PropertyReleaseID"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"PROPERTY_RELEASE_STATUS","key":"plus:PropertyReleaseStatus"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"PROVINCE_OR_STATE","key":"photoshop:State"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"REGISTRY_ENTRY_CREATED_ITEM_ID","key":"Iptc4xmpExt:RegItemId"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"REGISTRY_ENTRY_CREATED_ORGANISATION_ID","key":"Iptc4xmpExt:RegOrgId"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"RIGHTS_USAGE_TERMS","key":"xmpRights:UsageTerms"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"SCENE_CODE","key":"Iptc4xmpCore:Scene"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"SOURCE","key":"photoshop:Source"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"SUBJECT_CODE","key":"Iptc4xmpCore:SubjectCode"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"SUBLOCATION","key":"Iptc4xmpCore:Location"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"SUPPLEMENTAL_CATEGORIES","key":"photoshop:SupplementalCategories"},
+  {"class":"org.apache.tika.metadata.IPTC","field":"TITLE","key":"dc:title"},
+  
{"class":"org.apache.tika.metadata.IPTC","field":"URGENCY","key":"photoshop:Urgency"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_CONTENT_ID","key":"mapi:attach:content-id"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_CONTENT_LOCATION","key":"mapi:attach:content-location"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_DISPLAY_NAME","key":"mapi:attach:display-name"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_EXTENSION","key":"mapi:attach:extension"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_FILE_NAME","key":"mapi:attach:file-name"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_LANGUAGE","key":"mapi:attach:language"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_LONG_FILE_NAME","key":"mapi:attach:long-file-name"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_LONG_PATH_NAME","key":"mapi:attach:long-path-name"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"ATTACH_MIME","key":"mapi:attach:mime"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"BODY_TYPES_PROCESSED","key":"mapi:body-types-processed"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"CONVERSATION_INDEX","key":"mapi:conversation-index"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"CONVERSATION_TOPIC","key":"mapi:conversation-topic"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"FROM_REPRESENTING_EMAIL","key":"mapi:from-representing-email"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"FROM_REPRESENTING_NAME","key":"mapi:from-representing-name"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"IMPORTANCE","key":"mapi:importance"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"INTERNET_MESSAGE_ID","key":"mapi:internet-message-id"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"INTERNET_REFERENCES","key":"mapi:internet-references"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"IN_REPLY_TO_ID","key":"mapi:in-reply-to-id"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"IS_FLAGGED","key":"mapi:is-flagged"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"MESSAGE_CLASS","key":"mapi:message-class"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"MESSAGE_CLASS_RAW","key":"mapi:message-class-raw"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"PRIORTY","key":"mapi:priority"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"RECIPIENTS_STRING","key":"mapi:recipients-string"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"SENT_BY_SERVER_TYPE","key":"mapi:sent-by-server-type"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"SUBMISSION_ACCEPTED_AT_TIME","key":"mapi:msg-submission-accepted-at-time"},
+  
{"class":"org.apache.tika.metadata.MAPI","field":"SUBMISSION_ID","key":"mapi:msg-submission-id"},
+  
{"class":"org.apache.tika.metadata.MachineMetadata","field":"ARCHITECTURE_BITS","key":"machine:architectureBits"},
+  
{"class":"org.apache.tika.metadata.MachineMetadata","field":"ENDIAN","key":"machine:endian"},
+  
{"class":"org.apache.tika.metadata.MachineMetadata","field":"MACHINE_TYPE","key":"machine:machineType"},
+  
{"class":"org.apache.tika.metadata.MachineMetadata","field":"PLATFORM","key":"machine:platform"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_BCC_DISPLAY_NAME","key":"Message:BCC-Display-Name"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_BCC_EMAIL","key":"Message:BCC-Email"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_BCC_NAME","key":"Message:BCC-Name"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_CC_DISPLAY_NAME","key":"Message:CC-Display-Name"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_CC_EMAIL","key":"Message:CC-Email"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_CC_NAME","key":"Message:CC-Name"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_FROM_EMAIL","key":"Message:From-Email"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_FROM_NAME","key":"Message:From-Name"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_TO_DISPLAY_NAME","key":"Message:To-Display-Name"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_TO_EMAIL","key":"Message:To-Email"},
+  
{"class":"org.apache.tika.metadata.Message","field":"MESSAGE_TO_NAME","key":"Message:To-Name"},
+  
{"class":"org.apache.tika.metadata.Office","field":"AUTHOR","key":"meta:author"},
+  
{"class":"org.apache.tika.metadata.Office","field":"CHARACTER_COUNT","key":"meta:character-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"CHARACTER_COUNT_WITH_SPACES","key":"meta:character-count-with-spaces"},
+  
{"class":"org.apache.tika.metadata.Office","field":"COMMENT_PERSONS","key":"msoffice:comment-person-display-name"},
+  
{"class":"org.apache.tika.metadata.Office","field":"CREATION_DATE","key":"meta:creation-date"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_ANIMATIONS","key":"msoffice:ppt:has-animations"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_ATTACHED_TEMPLATE","key":"msoffice:doc:has-attached-template"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_COMMENTS","key":"msoffice:has-comments"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_DATA_CONNECTIONS","key":"msoffice:excel:has-data-connections"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_DDE_LINKS","key":"msoffice:excel:has-dde-links"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_EXTERNAL_CHART_DATA","key":"msoffice:has-external-chart-data"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_EXTERNAL_LINKS","key":"msoffice:excel:has-external-links"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_EXTERNAL_OLE_OBJECTS","key":"msoffice:has-external-ole-objects"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_EXTERNAL_PIVOT_DATA","key":"msoffice:excel:has-external-pivot-data"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_FIELD_HYPERLINKS","key":"msoffice:has-field-hyperlinks"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_FRAMESETS","key":"msoffice:doc:has-framesets"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_HIDDEN_COLUMNS","key":"msoffice:excel:has-hidden-cols"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_HIDDEN_ROWS","key":"msoffice:excel:has-hidden-rows"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_HIDDEN_SHEETS","key":"msoffice:excel:has-hidden-sheets"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_HIDDEN_SLIDES","key":"msoffice:ppt:has-hidden-slides"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_HIDDEN_TEXT","key":"msoffice:doc:has-hidden-text"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_HOVER_HYPERLINKS","key":"msoffice:has-hover-hyperlinks"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_LINKED_OLE_OBJECTS","key":"msoffice:has-linked-ole-objects"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_MAIL_MERGE","key":"msoffice:doc:has-mail-merge"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_POWER_QUERY","key":"msoffice:excel:has-power-query"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_SUBDOCUMENTS","key":"msoffice:doc:has-subdocuments"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_TRACK_CHANGES","key":"msoffice:has-track-changes"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_VERY_HIDDEN_SHEETS","key":"msoffice:excel:has-very-hidden-sheets"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_VML_HYPERLINKS","key":"msoffice:has-vml-hyperlinks"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HAS_WEB_QUERIES","key":"msoffice:excel:has-web-queries"},
+  
{"class":"org.apache.tika.metadata.Office","field":"HIDDEN_SHEET_NAMES","key":"msoffice:excel:hidden-sheet-names"},
+  
{"class":"org.apache.tika.metadata.Office","field":"IMAGE_COUNT","key":"meta:image-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"INITIAL_AUTHOR","key":"meta:initial-author"},
+  
{"class":"org.apache.tika.metadata.Office","field":"KEYWORDS","key":"meta:keyword"},
+  
{"class":"org.apache.tika.metadata.Office","field":"LAST_AUTHOR","key":"meta:last-author"},
+  
{"class":"org.apache.tika.metadata.Office","field":"LINE_COUNT","key":"meta:line-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_FROM_REPRESENTING_EMAIL","key":"meta:mapi-from-representing-email"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_FROM_REPRESENTING_NAME","key":"meta:mapi-from-representing-name"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_IMPORTANCE","key":"meta:mapi-importance"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_IS_FLAGGED","key":"meta:mapi-is-flagged"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_MESSAGE_CLASS","key":"meta:mapi-message-class"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_MESSAGE_CLIENT_SUBMIT_TIME","key":"meta:mapi-msg-client-submit-time"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_PRIORTY","key":"meta:mapi-importance"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_RECIPIENTS_STRING","key":"meta:mapi-recipients-string"},
+  
{"class":"org.apache.tika.metadata.Office","field":"MAPI_SENT_BY_SERVER_TYPE","key":"meta:mapi-sent-by-server-type"},
+  
{"class":"org.apache.tika.metadata.Office","field":"NUM_HIDDEN_SLIDES","key":"msoffice:ppt:num-hidden-slides"},
+  
{"class":"org.apache.tika.metadata.Office","field":"OBJECT_COUNT","key":"meta:object-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"OCX_NAME","key":"msoffice:ocxName"},
+  
{"class":"org.apache.tika.metadata.Office","field":"PAGE_COUNT","key":"meta:page-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"PARAGRAPH_COUNT","key":"meta:paragraph-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"PRINT_DATE","key":"meta:print-date"},
+  
{"class":"org.apache.tika.metadata.Office","field":"PROG_ID","key":"msoffice:progID"},
+  
{"class":"org.apache.tika.metadata.Office","field":"PROTECTED_WORKSHEET","key":"msoffice:excel:protected-worksheet"},
+  
{"class":"org.apache.tika.metadata.Office","field":"SAVE_DATE","key":"meta:save-date"},
+  
{"class":"org.apache.tika.metadata.Office","field":"SLIDE_COUNT","key":"meta:slide-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"TABLE_COUNT","key":"meta:table-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"VERY_HIDDEN_SHEET_NAMES","key":"msoffice:excel:very-hidden-sheet-names"},
+  
{"class":"org.apache.tika.metadata.Office","field":"WORD_COUNT","key":"meta:word-count"},
+  
{"class":"org.apache.tika.metadata.Office","field":"WORKBOOK_CODENAME","key":"msoffice:excel:workbook-codename"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLCore","field":"CATEGORY","key":"cp:category"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLCore","field":"CONTENT_STATUS","key":"cp:contentStatus"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLCore","field":"LAST_MODIFIED_BY","key":"cp:lastModifiedBy"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLCore","field":"LAST_PRINTED","key":"cp:lastPrinted"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLCore","field":"REVISION","key":"cp:revision"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLCore","field":"SUBJECT","key":"cp:subject"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLCore","field":"VERSION","key":"cp:version"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"APPLICATION","key":"extended-properties:Application"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"APP_VERSION","key":"extended-properties:AppVersion"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"COMMENTS","key":"w:Comments"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"COMPANY","key":"extended-properties:Company"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"DOC_SECURITY","key":"extended-properties:DocSecurity"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"DOC_SECURITY_STRING","key":"extended-properties:DocSecurityString"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"HIDDEN_SLIDES","key":"extended-properties:HiddedSlides"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"MANAGER","key":"extended-properties:Manager"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"NOTES","key":"extended-properties:Notes"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"PRESENTATION_FORMAT","key":"extended-properties:PresentationFormat"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"TEMPLATE","key":"extended-properties:Template"},
+  
{"class":"org.apache.tika.metadata.OfficeOpenXMLExtended","field":"TOTAL_TIME","key":"extended-properties:TotalTime"},
+  
{"class":"org.apache.tika.metadata.PDF","field":"ACTION_TRIGGER","key":"pdf:actionTrigger"},
+  
{"class":"org.apache.tika.metadata.PDF","field":"ACTION_TRIGGERS","key":"pdf:actionTriggers"},
+  
{"class":"org.apache.tika.metadata.PDF","field":"ACTION_TYPES","key":"pdf:actionTypes"},
+  
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{"class":"org.apache.tika.metadata.XMPDM","field":"ALBUM_ARTIST","key":"xmpDM:albumArtist"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"ALT_TAPE_NAME","key":"xmpDM:altTapeName"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"ARTIST","key":"xmpDM:artist"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"AUDIO_CHANNEL_TYPE","key":"xmpDM:audioChannelType"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"AUDIO_COMPRESSOR","key":"xmpDM:audioCompressor"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"AUDIO_MOD_DATE","key":"xmpDM:audioModDate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"AUDIO_SAMPLE_RATE","key":"xmpDM:audioSampleRate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"AUDIO_SAMPLE_TYPE","key":"xmpDM:audioSampleType"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"COMPILATION","key":"xmpDM:compilation"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"COMPOSER","key":"xmpDM:composer"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"COPYRIGHT","key":"xmpDM:copyright"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"DISC_NUMBER","key":"xmpDM:discNumber"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"DURATION","key":"xmpDM:duration"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"ENGINEER","key":"xmpDM:engineer"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"FILE_DATA_RATE","key":"xmpDM:fileDataRate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"GENRE","key":"xmpDM:genre"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"INSTRUMENT","key":"xmpDM:instrument"},
+  {"class":"org.apache.tika.metadata.XMPDM","field":"KEY","key":"xmpDM:key"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"LOG_COMMENT","key":"xmpDM:logComment"},
+  {"class":"org.apache.tika.metadata.XMPDM","field":"LOOP","key":"xmpDM:loop"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"METADATA_MOD_DATE","key":"xmpDM:metadataModDate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"NUMBER_OF_BEATS","key":"xmpDM:numberOfBeats"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"PULL_DOWN","key":"xmpDM:pullDown"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"RELATIVE_PEAK_AUDIO_FILE_PATH","key":"xmpDM:relativePeakAudioFilePath"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"RELEASE_DATE","key":"xmpDM:releaseDate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"SCALE_TYPE","key":"xmpDM:scaleType"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"SCENE","key":"xmpDM:scene"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"SHOT_DATE","key":"xmpDM:shotDate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"SHOT_LOCATION","key":"xmpDM:shotLocation"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"SHOT_NAME","key":"xmpDM:shotName"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"SPEAKER_PLACEMENT","key":"xmpDM:speakerPlacement"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"STRETCH_MODE","key":"xmpDM:stretchMode"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"TAPE_NAME","key":"xmpDM:tapeName"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"TEMPO","key":"xmpDM:tempo"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"TIME_SIGNATURE","key":"xmpDM:timeSignature"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"TRACK_NUMBER","key":"xmpDM:trackNumber"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_ALPHA_MODE","key":"xmpDM:videoAlphaMode"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_ALPHA_UNITY_IS_TRANSPARENT","key":"xmpDM:videoAlphaUnityIsTransparent"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_COLOR_SPACE","key":"xmpDM:videoColorSpace"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_COMPRESSOR","key":"xmpDM:videoCompressor"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_FIELD_ORDER","key":"xmpDM:videoFieldOrder"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_FRAME_RATE","key":"xmpDM:videoFrameRate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_MOD_DATE","key":"xmpDM:videoModDate"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_PIXEL_ASPECT_RATIO","key":"xmpDM:videoPixelAspectRatio"},
+  
{"class":"org.apache.tika.metadata.XMPDM","field":"VIDEO_PIXEL_DEPTH","key":"xmpDM:videoPixelDepth"},
+  
{"class":"org.apache.tika.metadata.XMPDM$ChannelTypePropertyConverter","field":"property","key":"xmpDM:audioChannelType"},
+  
{"class":"org.apache.tika.metadata.XMPIdq","field":"SCHEME","key":"xmpidq:Scheme"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"DERIVED_FROM_DOCUMENTID","key":"xmpMM:DerivedFrom:DocumentID"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"DERIVED_FROM_INSTANCEID","key":"xmpMM:DerivedFrom:InstanceID"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"DOCUMENTID","key":"xmpMM:DocumentID"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"HISTORY_ACTION","key":"xmpMM:History:Action"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"HISTORY_EVENT_INSTANCEID","key":"xmpMM:History:InstanceID"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"HISTORY_SOFTWARE_AGENT","key":"xmpMM:History:SoftwareAgent"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"HISTORY_WHEN","key":"xmpMM:History:When"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"INSTANCEID","key":"xmpMM:InstanceID"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"ORIGINAL_DOCUMENTID","key":"xmpMM:OriginalDocumentID"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"RENDITION_CLASS","key":"xmpMM:RenditionClass"},
+  
{"class":"org.apache.tika.metadata.XMPMM","field":"RENDITION_PARAMS","key":"xmpMM:RenditionParams"},
+  
{"class":"org.apache.tika.metadata.XMPPDF","field":"ABOUT","key":"xmp:pdf:About"},
+  
{"class":"org.apache.tika.metadata.XMPPDF","field":"KEY_WORDS","key":"xmp:pdf:Keywords"},
+  
{"class":"org.apache.tika.metadata.XMPPDF","field":"PDF_VERSION","key":"xmp:pdf:PDFVersion"},
+  
{"class":"org.apache.tika.metadata.XMPPDF","field":"PRODUCER","key":"xmp:pdf:Producer"},
+  
{"class":"org.apache.tika.metadata.XMPRights","field":"CERTIFICATE","key":"xmpRights:Certificate"},
+  
{"class":"org.apache.tika.metadata.XMPRights","field":"MARKED","key":"xmpRights:Marked"},
+  
{"class":"org.apache.tika.metadata.XMPRights","field":"OWNER","key":"xmpRights:Owner"},
+  
{"class":"org.apache.tika.metadata.XMPRights","field":"USAGE_TERMS","key":"xmpRights:UsageTerms"},
+  
{"class":"org.apache.tika.metadata.XMPRights","field":"WEB_STATEMENT","key":"xmpRights:WebStatement"},
+  
{"class":"org.apache.tika.sax.AbstractRecursiveParserWrapperHandler","field":"EMBEDDED_RESOURCE_LIMIT_REACHED","key":"X-TIKA:EXCEPTION:embedded_resource_limit_reached"},
+  
{"class":"org.apache.tika.utils.ParserUtils","field":"EMBEDDED_PARSER","key":"X-TIKA:EXCEPTION:embedded_parser"}
+]
diff --git 
a/tika-metadata-schema/src/test/resources/org/apache/tika/metadata/migration-overlay.tsv
 
b/tika-metadata-schema/src/test/resources/org/apache/tika/metadata/migration-overlay.tsv
new file mode 100644
index 0000000000..552d8e8868
--- /dev/null
+++ 
b/tika-metadata-schema/src/test/resources/org/apache/tika/metadata/migration-overlay.tsv
@@ -0,0 +1,43 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# TIKA-4797 manual migration overlay (core scope, adjudicated + confirmed 
2026-07-28)
+# The moves/removals the field-identity join could NOT auto-bridge. Everything 
else auto-renames.
+#
+# v3<TAB>v4    (v4 = DROPPED means 4.x no longer emits it; not bridgeable)
+meta:mapi-from-representing-email      mapi:from-representing-email
+meta:mapi-from-representing-name       mapi:from-representing-name
+meta:mapi-importance   mapi:importance
+meta:mapi-is-flagged   mapi:is-flagged
+meta:mapi-message-class        mapi:message-class
+meta:mapi-recipients-string    mapi:recipients-string
+meta:mapi-sent-by-server-type  mapi:sent-by-server-type
+# CONSOLIDATION not clean rename: 4.x removed the client-submit key and 
repoints PST's
+# getClientSubmitTime() into SUBMISSION_ACCEPTED_AT_TIME (distinct MAPI props 
-> mislabel).
+# --> IF patches/MAPI-client-submit-time.patch is applied, retarget this to  
mapi:msg-client-submit-time
+#     (a CLEAN rename). Until then, the value follows to submission-accepted, 
so this maps there.
+meta:mapi-msg-client-submit-time       mapi:msg-submission-accepted-at-time
+# DROPPED (confirmed intentional): 4.x OutlookPSTParser sets 
TikaCoreProperties.INTERNAL_PATH
+# (tk:internal-path) = folderPath + "/" + item-name on each mail item -> the 
folder path became the
+# full item path, a SUPERSET. Not a 1:1 value, so the key-rename bridge can't 
reproduce the folder-only
+# value; document "folder path now part of tk:internal-path". Not bridgeable 
as a rename.
+pst:folderPath DROPPED
+# RTF embedded-object fields: 4.x renamed the Java fields EMB_* -> EMBEDDED_* 
AND the keys
+# rtf_meta:emb_* -> rtf:embedded-*, so field-identity can't bridge them. Clean 
renames (targets
+# verified present in the 4.x closed set); fuzzy suggested each correctly.
+rtf_meta:emb_app_version       rtf:embedded-app-version
+rtf_meta:emb_class     rtf:embedded-class
+rtf_meta:emb_item      rtf:embedded-item
+rtf_meta:emb_topic     rtf:embedded-topic

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