1 files changed, 59 insertions, 0 deletions
diff --git a/src/main/java/com/networknt/schema/MinLengthValidator.java b/src/main/java/com/networknt/schema/MinLengthValidator.java
new file mode 100644
index 0000000..c82b8ec
--- /dev/null
+++ b/src/main/java/com/networknt/schema/MinLengthValidator.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2016 Network New Technologies Inc.
+ *
+ * Licensed 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 com.networknt.schema;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Collections;
+import java.util.Set;
+
+/**
+ * {@link JsonValidator} for minLength.
+ */
+public class MinLengthValidator extends BaseJsonValidator implements JsonValidator {
+    private static final Logger logger = LoggerFactory.getLogger(MinLengthValidator.class);
+
+    private int minLength;
+
+    public MinLengthValidator(SchemaLocation schemaLocation, JsonNodePath evaluationPath, JsonNode schemaNode, JsonSchema parentSchema, ValidationContext validationContext) {
+        super(schemaLocation, evaluationPath, schemaNode, parentSchema, ValidatorTypeCode.MIN_LENGTH, validationContext);
+        minLength = Integer.MIN_VALUE;
+        if (schemaNode != null && schemaNode.canConvertToExactIntegral()) {
+            minLength = schemaNode.intValue();
+        }
+    }
+
+    public Set<ValidationMessage> validate(ExecutionContext executionContext, JsonNode node, JsonNode rootNode, JsonNodePath instanceLocation) {
+        debug(logger, node, rootNode, instanceLocation);
+
+        JsonType nodeType = TypeFactory.getValueNodeType(node, this.validationContext.getConfig());
+        if (nodeType != JsonType.STRING) {
+            // ignore non-string types
+            return Collections.emptySet();
+        }
+
+        if (node.textValue().codePointCount(0, node.textValue().length()) < minLength) {
+            return Collections.singleton(message().instanceNode(node).instanceLocation(instanceLocation)
+                    .locale(executionContext.getExecutionConfig().getLocale())
+                    .failFast(executionContext.isFailFast()).arguments(minLength).build());
+        }
+        return Collections.emptySet();
+    }
+
+}