Keyword items

api/src/main/java/io/github/sebastiantoepfer/jsonschema/JsonSubSchema.java

@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ *
+ * see: https://json-schema.org/draft/2020-12/json-schema-core#name-root-schema-and-subschemas-
+ */
+public interface JsonSubSchema extends JsonSchema {
+    JsonSchema owner();
+}

api/src/main/java/io/github/sebastiantoepfer/jsonschema/keyword/KeywordType.java

@@ -23,6 +23,7 @@
  */
 package io.github.sebastiantoepfer.jsonschema.keyword;
 
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import jakarta.json.JsonValue;
 import java.util.Objects;
 
@@ -33,5 +34,5 @@ default boolean hasName(String name) {
 
     String name();
 
-    Keyword createKeyword(JsonValue value);
+    Keyword createKeyword(JsonSchema schema, JsonValue value);
 }

api/src/test/java/io/github/sebastiantoepfer/jsonschema/keyword/KeywordTypeTest.java

@@ -26,6 +26,7 @@
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.is;
 
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import jakarta.json.JsonValue;
 import org.junit.jupiter.api.Test;
 
@@ -45,7 +46,7 @@ public String name() {
         }
 
         @Override
-        public Keyword createKeyword(JsonValue value) {
+        public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
             throw new UnsupportedOperationException("Not supported yet.");
         }
     }

core/pom.xml

@@ -167,6 +167,16 @@
                                         <inculde>**/tests/draft2019-09/multipleOf.json</inculde>
                                         <inculde>**/tests/draft2020-12/multipleOf.json</inculde>
                                         <inculde>**/tests/draft-next/multipleOf.json</inculde>
+
+                                        <!-- more than items keyword needed :(
+                                        <inculde>**/tests/draft3/items.json</inculde>
+                                        <inculde>**/tests/draft4/items.json</inculde>
+                                        <inculde>**/tests/draft6/items.json</inculde>
+                                        <inculde>**/tests/draft7/items.json</inculde>
+                                        <inculde>**/tests/draft2019-09/items.json</inculde>
+                                        <inculde>**/tests/draft2020-12/items.json</inculde>
+                                        <inculde>**/tests/draft-next/items.json</inculde>
+                                        -->
                                     </includes>
                                 </resource>
                             </resources>

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/DefaultJsonSchema.java

@@ -50,7 +50,7 @@ public Validator validator() {
         return asJsonObject()
             .entrySet()
             .stream()
-            .map(keywords::createKeywordFor)
+            .map(keyword -> keywords.createKeywordFor(this, keyword))
             .filter(Constraint.class::isInstance)
             .map(k -> (Constraint<JsonValue>) k)
             .collect(
@@ -60,7 +60,7 @@ public Validator validator() {
 
     private Collection<VocabularyDefinition> vocabulary() {
         return new KeywordSearch(new VocabularyKeywordType())
-            .searchForKeywordIn(asJsonObject())
+            .searchForKeywordIn(this)
             .filter(VocabularyDefinitions.class::isInstance)
             .map(VocabularyDefinitions.class::cast)
             .stream()

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/KeywordSearch.java

@@ -23,9 +23,9 @@
  */
 package io.github.sebastiantoepfer.jsonschema.core;
 
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
-import jakarta.json.JsonObject;
 import java.util.Objects;
 import java.util.Optional;
 
@@ -37,7 +37,9 @@ public KeywordSearch(final KeywordType keywordType) {
         this.keywordType = Objects.requireNonNull(keywordType);
     }
 
-    public Optional<Keyword> searchForKeywordIn(final JsonObject schema) {
-        return Optional.ofNullable(schema.get(keywordType.name())).map(keywordType::createKeyword);
+    public Optional<Keyword> searchForKeywordIn(final JsonSchema schema) {
+        return Optional
+            .ofNullable(schema.asJsonObject().get(keywordType.name()))
+            .map(keywordValue -> keywordType.createKeyword(schema, keywordValue));
     }
 }

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/Keywords.java

@@ -26,6 +26,7 @@
 import static java.util.function.Predicate.not;
 import static java.util.stream.Collectors.toMap;
 
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.Vocabulary;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.basic.BasicVocabulary;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.core.CoreLazyVocabulary;
@@ -80,13 +81,13 @@ public Keywords(final Collection<VocabularyDefinition> vocabDefs) {
                 );
     }
 
-    public Keyword createKeywordFor(final Map.Entry<String, JsonValue> property) {
+    public Keyword createKeywordFor(final JsonSchema schema, final Map.Entry<String, JsonValue> property) {
         return vocabularies
             .stream()
             .map(vocab -> vocab.findKeywordTypeByName(property.getKey()))
             .flatMap(Optional::stream)
             .findFirst()
-            .map(keywordType -> keywordType.createKeyword(property.getValue()))
+            .map(keywordType -> keywordType.createKeyword(schema, property.getValue()))
             .orElseThrow();
     }
 }

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/BasicVocabulary.java

@@ -46,7 +46,8 @@ public BasicVocabulary() {
                 new ExclusiveMinimumKeywordType(),
                 new MaximumKeywordType(),
                 new ExclusiveMaximumKeywordType(),
-                new MultipleOfKeywordType()
+                new MultipleOfKeywordType(),
+                new ItemsKeywordType()
             );
     }
 

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/ExclusiveMaximumKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.NUMBER.isInstance(value)) {
             return new ExclusiveMaximumKeyword((JsonNumber) value);
         } else {

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/ExclusiveMinimumKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.NUMBER.isInstance(value)) {
             return new ExclusiveMinimumKeyword((JsonNumber) value);
         } else {

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/ItemsKeywordType.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.basic;
+
+import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
+import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
+import io.github.sebastiantoepfer.jsonschema.JsonSchemas;
+import io.github.sebastiantoepfer.jsonschema.JsonSubSchema;
+import io.github.sebastiantoepfer.jsonschema.Validator;
+import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
+import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
+import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
+import jakarta.json.JsonArray;
+import jakarta.json.JsonValue;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+final class ItemsKeywordType implements KeywordType {
+
+    @Override
+    public String name() {
+        return "items";
+    }
+
+    @Override
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
+        return new ItemsKeyword(schema, JsonSchemas.load(value));
+    }
+
+    private class ItemsKeyword implements ConstraintAssertion, JsonSubSchema {
+
+        private final JsonSchema owner;
+        private final JsonSchema schema;
+
+        public ItemsKeyword(final JsonSchema owner, final JsonSchema schema) {
+            this.owner = Objects.requireNonNull(owner);
+            this.schema = Objects.requireNonNull(schema);
+        }
+
+        @Override
+        public JsonSchema owner() {
+            return owner;
+        }
+
+        @Override
+        public Validator validator() {
+            return schema.validator();
+        }
+
+        @Override
+        public ValueType getValueType() {
+            return schema.getValueType();
+        }
+
+        @Override
+        public boolean hasName(final String name) {
+            return Objects.equals(name(), name);
+        }
+
+        @Override
+        public Collection<ConstraintViolation> violationsBy(final JsonValue value) {
+            final Collection<ConstraintViolation> result;
+            if (!InstanceType.ARRAY.isInstance(value) || matchesSchema(value.asJsonArray())) {
+                result = Collections.emptyList();
+            } else {
+                result = List.of(new ConstraintViolation());
+            }
+            return result;
+        }
+
+        private boolean matchesSchema(final JsonArray items) {
+            final Validator itemValidator = validator();
+            return items.stream().map(itemValidator::validate).allMatch(Collection::isEmpty);
+        }
+    }
+}

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/MaxLengthKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.INTEGER.isInstance(value)) {
             return new MaxLengthKeyword((JsonNumber) value);
         } else {

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/MaximumKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.NUMBER.isInstance(value)) {
             return new MaximumKeyword((JsonNumber) value);
         } else {

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/MinLengthKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.INTEGER.isInstance(value)) {
             return new MinLengthKeyword((JsonNumber) value);
         } else {

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/MinimumKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.NUMBER.isInstance(value)) {
             return new MinimumKeyword((JsonNumber) value);
         } else {

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/MultipleOfKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.NUMBER.isInstance(value)) {
             return new MultipleOfKeyword((JsonNumber) value);
         } else {

core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/vocab/basic/PatternKeywordType.java

@@ -25,6 +25,7 @@
 
 import io.github.sebastiantoepfer.jsonschema.ConstraintViolation;
 import io.github.sebastiantoepfer.jsonschema.InstanceType;
+import io.github.sebastiantoepfer.jsonschema.JsonSchema;
 import io.github.sebastiantoepfer.jsonschema.core.vocab.ConstraintAssertion;
 import io.github.sebastiantoepfer.jsonschema.keyword.Keyword;
 import io.github.sebastiantoepfer.jsonschema.keyword.KeywordType;
@@ -44,7 +45,7 @@ public String name() {
     }
 
     @Override
-    public Keyword createKeyword(final JsonValue value) {
+    public Keyword createKeyword(final JsonSchema schema, final JsonValue value) {
         if (InstanceType.STRING.isInstance(value)) {
             return new PatternKeyword((JsonString) value);
         } else {