Merge pull request #7817 from backstage/joonp/entitiessearchfilter-refactor

[Mini PRFC] EntitiesSearchFilter type refactor

.changeset/smart-fans-complain.md

@@ -0,0 +1,42 @@
+---
+'@backstage/plugin-catalog-backend': minor
+---
+
+**BREAKING** EntitiesSearchFilter fields have changed.
+
+EntitiesSearchFilter now has only two fields: `key` and `value`. The `matchValueIn` and `matchValueExists` fields are no longer are supported. Previous filters written using the `matchValueIn` and `matchValueExists` fields can be rewritten as follows:
+
+Filtering by existence of key only:
+
+```diff
+  filter: {
+    {
+      key: 'abc',
+-     matchValueExists: true,
+    },
+  }
+```
+
+Filtering by key and values:
+
+```diff
+  filter: {
+    {
+      key: 'abc',
+-     matchValueExists: true,
+-     matchValueIn: ['xyz'],
++     values: ['xyz'],
+    },
+  }
+```
+
+Negation of filters can now be achieved through a `not` object:
+
+```
+filter: {
+  not: {
+    key: 'abc',
+    values: ['xyz'],
+  },
+}
+```