#8286 SQLite: multiple unnamed foreign keys support

Former-commit-id: 368b5bc1

plugins/org.jkiss.dbeaver.ext.generic/src/org/jkiss/dbeaver/ext/generic/model/ForeignKeysCache.java

@@ -48,6 +48,7 @@ class ForeignKeysCache extends JDBCCompositeCache<GenericStructContainer, Generi
 
     private final Map<String, GenericUniqueKey> pkMap = new HashMap<>();
     private final GenericMetaObject foreignKeyObject;
+    private Set<String> cachedFKNames;
 
     ForeignKeysCache(TableCache tableCache)
     {
@@ -233,7 +234,18 @@ class ForeignKeysCache extends JDBCCompositeCache<GenericStructContainer, Generi
 
     @Override
     protected String getDefaultObjectName(JDBCResultSet dbResult, String parentName) {
+        if (cachedFKNames == null) {
+            cachedFKNames = new LinkedHashSet<>();
+        }
         final String pkTableName = GenericUtils.safeGetStringTrimmed(foreignKeyObject, dbResult, JDBCConstants.PKTABLE_NAME);
-        return "FK_" + parentName + "_" + pkTableName;
+        int keySeq = GenericUtils.safeGetInt(foreignKeyObject, dbResult, JDBCConstants.KEY_SEQ);
+        String fkName = "FK_" + parentName + "_" + pkTableName;
+        if (cachedFKNames.contains(fkName) && keySeq == 1) {
+            // Multiple unnamed foreign keys - #8286
+            // Column sequnce 1 means new FK so lets make a new one
+            fkName += "_" + (cachedFKNames.size() + 1);
+        }
+        cachedFKNames.add(fkName);
+        return fkName;
     }
 }