add support for properties keyword

core/pom.xml

@@ -118,6 +118,9 @@
                                         <inculde>**/tests/draft2020-12/minItems.json</inculde>
                                         <inculde>**/tests/draft2020-12/maxItems.json</inculde>
                                         <inculde>**/tests/draft2020-12/patternProperties.json</inculde>
+                                        <!-- needs additionalProperty
+                                        <inculde>**/tests/draft2020-12/properties.json</inculde>
+                                        -->
                                     </includes>
                                 </resource>
                             </resources>

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/applicator/ApplicatorVocabulary.java

@@ -37,9 +37,10 @@ public ApplicatorVocabulary() {
         this.vocab =
             new DefaultVocabulary(
                 URI.create("https://json-schema.org/draft/2020-12/vocab/applicator"),
+                new PropertiesKeywordType(),
                 new PatternPropertiesKeywordType(),
-                new PrefixItemsKeywordType(),
-                new ItemsKeywordType()
+                new ItemsKeywordType(),
+                new PrefixItemsKeywordType()
             );
     }
 

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/applicator/PropertiesKeywordType.java

@@ -0,0 +1,100 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 sebastian.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package io.github.sebastiantoepfer.jsonschema.core.vocab.applicator;
+
+import static jakarta.json.stream.JsonCollectors.toJsonArray;
+
+import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
+import io.github.sebastiantoepfer.jsonschema.JsonSchemas;
+import io.github.sebastiantoepfer.jsonschema.keyword.Annotation;
+import io.github.sebastiantoepfer.jsonschema.keyword.Applicator;
+import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
+import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
+import jakarta.json.Json;
+import jakarta.json.JsonObject;
+import jakarta.json.JsonValue;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+final class PropertiesKeywordType implements KeywordType {
+
+    @Override
+    public String name() {
+        return "properties";
+    }
+
+    @Override
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
+        return new PropertiesKeyword(value.asJsonObject());
+    }
+
+    private class PropertiesKeyword implements Applicator, Annotation {
+
+        private final JsonObject schemas;
+
+        public PropertiesKeyword(final JsonObject schemas) {
+            this.schemas = schemas;
+        }
+
+        @Override
+        public boolean hasName(final String name) {
+            return Objects.equals(name(), name);
+        }
+
+        @Override
+        public Collection<KeywordCategory> categories() {
+            return List.of(KeywordCategory.ANNOTATION, KeywordCategory.APPLICATOR);
+        }
+
+        @Override
+        public boolean applyTo(final JsonValue instance) {
+            return !InstanceType.OBJECT.isInstance(instance) || propertiesMatches(instance.asJsonObject());
+        }
+
+        private boolean propertiesMatches(final JsonObject instance) {
+            return instance.entrySet().stream().allMatch(this::propertyMatches);
+        }
+
+        private boolean propertyMatches(final Map.Entry<String, JsonValue> property) {
+            return (
+                !schemas.containsKey(property.getKey()) ||
+                JsonSchemas.load(schemas.get(property.getKey())).validator().validate(property.getValue()).isEmpty()
+            );
+        }
+
+        @Override
+        public JsonValue valueFor(final JsonValue value) {
+            return value
+                .asJsonObject()
+                .keySet()
+                .stream()
+                .filter(schemas::containsKey)
+                .map(Json::createValue)
+                .collect(toJsonArray());
+        }
+    }
+}

core/src/test/java/io/github/sebastiantoepfer/jsonschema/core/vocab/applicator/PropertiesKeywordTypeTest.java

@@ -0,0 +1,127 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 sebastian.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package io.github.sebastiantoepfer.jsonschema.core.vocab.applicator;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.contains;
+import static org.hamcrest.Matchers.is;
+
+import io.github.sebastiantoepfer.jsonschema.core.DefaultJsonSchemaFactory;
+import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
+import jakarta.json.Json;
+import jakarta.json.JsonValue;
+import org.hamcrest.Matchers;
+import org.junit.jupiter.api.Test;
+
+class PropertiesKeywordTypeTest {
+
+    @Test
+    void should_be_know_his_name() {
+        final Keyword keyword = new PropertiesKeywordType()
+            .createKeyword(new DefaultJsonSchemaFactory().create(JsonValue.TRUE), JsonValue.EMPTY_JSON_OBJECT);
+
+        assertThat(keyword.hasName("properties"), is(true));
+        assertThat(keyword.hasName("test"), is(false));
+    }
+
+    @Test
+    void should_be_an_applicator_and_annotation() {
+        assertThat(
+            new PropertiesKeywordType()
+                .createKeyword(new DefaultJsonSchemaFactory().create(JsonValue.TRUE), JsonValue.EMPTY_JSON_OBJECT)
+                .categories(),
+            Matchers.containsInAnyOrder(Keyword.KeywordCategory.APPLICATOR, Keyword.KeywordCategory.ANNOTATION)
+        );
+    }
+
+    @Test
+    void should_be_valid_for_non_objects() {
+        assertThat(
+            new PropertiesKeywordType()
+                .createKeyword(new DefaultJsonSchemaFactory().create(JsonValue.TRUE), JsonValue.EMPTY_JSON_OBJECT)
+                .asApplicator()
+                .applyTo(JsonValue.EMPTY_JSON_ARRAY),
+            is(true)
+        );
+    }
+
+    @Test
+    void should_be_valid_if_properties_applies_to_his_schema() {
+        assertThat(
+            new PropertiesKeywordType()
+                .createKeyword(
+                    new DefaultJsonSchemaFactory().create(JsonValue.TRUE),
+                    Json.createObjectBuilder().add("test", JsonValue.TRUE).build()
+                )
+                .asApplicator()
+                .applyTo(Json.createObjectBuilder().add("test", 1).build()),
+            is(true)
+        );
+    }
+
+    @Test
+    void should_be_invalid_if_properties_not_applies_to_his_schema() {
+        assertThat(
+            new PropertiesKeywordType()
+                .createKeyword(
+                    new DefaultJsonSchemaFactory().create(JsonValue.TRUE),
+                    Json.createObjectBuilder().add("test", JsonValue.FALSE).build()
+                )
+                .asApplicator()
+                .applyTo(Json.createObjectBuilder().add("test", 1).build()),
+            is(false)
+        );
+    }
+
+    @Test
+    void should_be_valid_for_empty_objects() {
+        assertThat(
+            new PropertiesKeywordType()
+                .createKeyword(
+                    new DefaultJsonSchemaFactory().create(JsonValue.TRUE),
+                    Json.createObjectBuilder().add("test", JsonValue.FALSE).build()
+                )
+                .asApplicator()
+                .applyTo(JsonValue.EMPTY_JSON_OBJECT),
+            is(true)
+        );
+    }
+
+    @Test
+    void should_return_all_matched_propertynames() {
+        assertThat(
+            new PropertiesKeywordType()
+                .createKeyword(
+                    new DefaultJsonSchemaFactory().create(JsonValue.TRUE),
+                    Json.createObjectBuilder().add("test", true).add("foo", true).build()
+                )
+                .asAnnotation()
+                .valueFor(Json.createObjectBuilder().add("foo", 1).build())
+                .asJsonArray()
+                .stream()
+                .toList(),
+            contains(Json.createValue("foo"))
+        );
+    }
+}