diff --git a/phpunit.xml b/phpunit.xml
index 91db872c..9ba52f2a 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -8,8 +8,7 @@
 		 convertNoticesToExceptions="true"
 		 convertWarningsToExceptions="true"
 		 processIsolation="false"
-		 stopOnFailure="false"
-		 syntaxCheck="true">
+		 stopOnFailure="false">
 	<testsuites>
 		<testsuite name="All">
 			<directory>./tests/</directory>
@@ -27,4 +26,4 @@
 		<log type="coverage-text" target="build/coverage.txt"/>
 		<log type="coverage-clover" target="build/clover.xml"/>
 	</logging-->
-</phpunit>
\ No newline at end of file
+</phpunit>
diff --git a/src/Contracts/Schema/ContainerInterface.php b/src/Contracts/Schema/ContainerInterface.php
index 9e0ffbb2..ba799d7f 100644
--- a/src/Contracts/Schema/ContainerInterface.php
+++ b/src/Contracts/Schema/ContainerInterface.php
@@ -30,6 +30,15 @@ interface ContainerInterface
      */
     public function getSchema($resourceObject): ?SchemaInterface;
 
+    /**
+     * If container has a Schema for a given input.
+     *
+     * @param mixed $resourceObject
+     *
+     * @return bool
+     */
+    public function hasSchema($resourceObject): bool;
+
     /**
      * Get schema provider by resource type.
      *
diff --git a/src/Encoder/Parser/Parser.php b/src/Encoder/Parser/Parser.php
index 8accf9f1..4977d6d6 100644
--- a/src/Encoder/Parser/Parser.php
+++ b/src/Encoder/Parser/Parser.php
@@ -275,6 +275,7 @@ protected function getCurrentData()
      *
      * @SuppressWarnings(PHPMD.StaticAccess)
      * @SuppressWarnings(PHPMD.ElseExpression)
+     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
      */
     protected function analyzeData($data): array
     {
@@ -285,11 +286,15 @@ protected function analyzeData($data): array
         $isOk = (is_array($data) === true || is_object($data) === true || $data === null);
         $isOk ?: Exceptions::throwInvalidArgument('data', $data);
 
-        if (is_array($data) === true) {
+        if ($this->container->hasSchema($data) === true) {
+            $isCollection    = false;
+            $traversableData = [$data];
+        } elseif (is_array($data) === true) {
             $traversableData = $data;
         } elseif ($data instanceof Traversable) {
             $traversableData = $data instanceof IteratorAggregate ? $data->getIterator() : $data;
         } elseif (is_object($data) === true) {
+            // normally resources should be handled above but if Schema was not registered for $data we get here
             $isCollection    = false;
             $traversableData = [$data];
         } elseif ($data === null) {
diff --git a/src/Schema/Container.php b/src/Schema/Container.php
index 40ebced5..29773088 100644
--- a/src/Schema/Container.php
+++ b/src/Schema/Container.php
@@ -120,8 +120,7 @@ public function __construct(SchemaFactoryInterface $factory, iterable $schemas =
      */
     public function register(string $type, $schema): void
     {
-        // Type must be non-empty string
-        if (empty($type) === true) {
+        if (empty($type) === true || class_exists($type) === false) {
             throw new InvalidArgumentException(_($this->messages[self::MSG_INVALID_TYPE]));
         }
 
@@ -175,6 +174,15 @@ public function getSchema($resource): ?SchemaInterface
         return $this->getSchemaByType($resourceType);
     }
 
+    /**
+     * @inheritdoc
+     */
+    public function hasSchema($resourceObject): bool
+    {
+        return is_object($resourceObject) === true &&
+            $this->hasProviderMapping($this->getResourceType($resourceObject)) === true;
+    }
+
     /**
      * @inheritdoc
      *
@@ -358,6 +366,11 @@ protected function setResourceToJsonTypeMapping(string $resourceType, string $js
      */
     protected function getResourceType($resource): string
     {
+        assert(
+            is_object($resource) === true,
+            'Unable to get a type of the resource as it is not an object.'
+        );
+
         return get_class($resource);
     }
 
diff --git a/src/Schema/ResourceIdentifierContainerAdapter.php b/src/Schema/ResourceIdentifierContainerAdapter.php
index 699e7b4d..843a2a65 100644
--- a/src/Schema/ResourceIdentifierContainerAdapter.php
+++ b/src/Schema/ResourceIdentifierContainerAdapter.php
@@ -55,6 +55,14 @@ public function getSchema($resourceObject): SchemaInterface
         return $this->getSchemaAdapter($this->container->getSchema($resourceObject));
     }
 
+    /**
+     * @inheritdoc
+     */
+    public function hasSchema($resourceObject): bool
+    {
+        return $this->container->hasSchema($resourceObject);
+    }
+
     /**
      * @inheritdoc
      */
diff --git a/tests/Data/AuthorCModel.php b/tests/Data/AuthorCModel.php
new file mode 100644
index 00000000..07c4bf13
--- /dev/null
+++ b/tests/Data/AuthorCModel.php
@@ -0,0 +1,98 @@
+<?php namespace Neomerx\Tests\JsonApi\Data;
+
+/**
+ * Copyright 2015-2018 info@neomerx.com
+ *
+ * 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.
+ */
+
+use ArrayAccess;
+use ArrayIterator;
+use IteratorAggregate;
+
+/**
+ * This model emulates a resource which looks like an array (Traversable) with its properties.
+ * The library should successfully distinguish arrays from resources that may act as arrays.
+ *
+ * A real word example of such a resource is Yii CModel https://www.yiiframework.com/doc/api/1.1/CModel
+ *
+ * @package Neomerx\Tests\JsonApi
+ */
+class AuthorCModel implements ArrayAccess, IteratorAggregate
+{
+    const ATTRIBUTE_ID = 'author_id';
+    const ATTRIBUTE_FIRST_NAME = 'first_name';
+    const ATTRIBUTE_LAST_NAME = 'last_name';
+    const LINK_COMMENTS = 'comments';
+
+    /**
+     * Resource properties.
+     *
+     * @var array
+     */
+    private $properties = [];
+
+    /**
+     * @param string     $identity
+     * @param string     $firstName
+     * @param string     $lastName
+     * @param array|null $comments
+     */
+    public function __construct(string $identity, string $firstName, string $lastName, array $comments = null)
+    {
+        $this[self::ATTRIBUTE_ID]         = $identity;
+        $this[self::ATTRIBUTE_FIRST_NAME] = $firstName;
+        $this[self::ATTRIBUTE_LAST_NAME]  = $lastName;
+        $this[self::LINK_COMMENTS]        = $comments;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->properties);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetExists($offset)
+    {
+        return array_key_exists($offset, $this->properties);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetGet($offset)
+    {
+        return $this->properties[$offset];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->properties[$offset] = $value;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetUnset($offset)
+    {
+        unset($this->properties[$offset]);
+    }
+}
diff --git a/tests/Data/AuthorCModelSchema.php b/tests/Data/AuthorCModelSchema.php
new file mode 100644
index 00000000..d83d7b92
--- /dev/null
+++ b/tests/Data/AuthorCModelSchema.php
@@ -0,0 +1,82 @@
+<?php namespace Neomerx\Tests\JsonApi\Data;
+
+/**
+ * Copyright 2015-2018 info@neomerx.com
+ *
+ * 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.
+ */
+
+use Neomerx\JsonApi\Contracts\Document\LinkInterface;
+
+/**
+ * @package Neomerx\Tests\JsonApi
+ */
+class AuthorCModelSchema extends DevSchema
+{
+    /**
+     * @inheritdoc
+     */
+    protected $resourceType = 'people';
+
+    /**
+     * @inheritdoc
+     */
+    public function getId($author): ?string
+    {
+        return $author[AuthorCModel::ATTRIBUTE_ID];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getAttributes($author, array $fieldKeysFilter = null): ?array
+    {
+        return [
+            AuthorCModel::ATTRIBUTE_FIRST_NAME => $author[AuthorCModel::ATTRIBUTE_FIRST_NAME],
+            AuthorCModel::ATTRIBUTE_LAST_NAME  => $author[AuthorCModel::ATTRIBUTE_LAST_NAME],
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getRelationships($author, bool $isPrimary, array $includeRelationships): ?array
+    {
+        assert($author instanceof AuthorCModel);
+
+        if (($isPrimary && $this->isIsLinksInPrimary()) || (!$isPrimary && $this->isIsLinksInIncluded())) {
+            $selfLink = $this->getRelationshipSelfLink($author, AuthorCModel::LINK_COMMENTS);
+            $links    = [
+                AuthorCModel::LINK_COMMENTS => [
+                    self::LINKS     => [LinkInterface::SELF => $selfLink],
+                    self::SHOW_DATA => false,
+                ],
+            ];
+        } else {
+            $links = [
+                AuthorCModel::LINK_COMMENTS => [
+                    // closures for data are supported as well
+                    self::DATA => function () use ($author) {
+                        return isset($author[AuthorCModel::LINK_COMMENTS]) ?
+                            $author[AuthorCModel::LINK_COMMENTS] : null;
+                    },
+                ],
+            ];
+        }
+
+        // NOTE: The line(s) below for testing purposes only. Not for production.
+        $this->fixLinks($author, $links);
+
+        return $links;
+    }
+}
diff --git a/tests/Encoder/EncodeSimpleObjectsTest.php b/tests/Encoder/EncodeSimpleObjectsTest.php
index 4cb0e58e..4be91f42 100644
--- a/tests/Encoder/EncodeSimpleObjectsTest.php
+++ b/tests/Encoder/EncodeSimpleObjectsTest.php
@@ -23,6 +23,8 @@
 use Neomerx\JsonApi\Factories\Factory;
 use Neomerx\Tests\JsonApi\BaseTestCase;
 use Neomerx\Tests\JsonApi\Data\Author;
+use Neomerx\Tests\JsonApi\Data\AuthorCModel;
+use Neomerx\Tests\JsonApi\Data\AuthorCModelSchema;
 use Neomerx\Tests\JsonApi\Data\AuthorSchema;
 use Neomerx\Tests\JsonApi\Data\Collection;
 use Neomerx\Tests\JsonApi\Data\Comment;
@@ -825,4 +827,69 @@ public function testEncodingSimilarRelationships(): void
 
         $this->assertEquals($expected, $actual);
     }
+
+    /**
+     * Test encode array-based objects.
+     *
+     * @see https://github.com/neomerx/json-api/pull/214
+     */
+    public function testEncodeArrayBasedObject(): void
+    {
+        $author  = new AuthorCModel(9, 'Dan', 'Gebhardt');
+        $encoder = Encoder::instance([
+            AuthorCModel::class => AuthorCModelSchema::class,
+        ], $this->encoderOptions);
+
+        $actual = $encoder->encodeData($author);
+
+        $expected = <<<EOL
+        {
+            "data" : {
+                "type" : "people",
+                "id"   : "9",
+                "attributes" : {
+                    "first_name" : "Dan",
+                    "last_name"  : "Gebhardt"
+                },
+                "relationships" : {
+                    "comments" : { "data" : null }
+                },
+                "links" : {
+                    "self" : "http://example.com/people/9"
+                }
+            }
+        }
+EOL;
+        // remove formatting from 'expected'
+        $expected = json_encode(json_decode($expected));
+
+        $this->assertEquals($expected, $actual);
+
+        // same but as array
+
+        $actual = $encoder->encodeData([$author]);
+
+        $expected = <<<EOL
+        {
+            "data" : [{
+                "type" : "people",
+                "id"   : "9",
+                "attributes" : {
+                    "first_name" : "Dan",
+                    "last_name"  : "Gebhardt"
+                },
+                "relationships" : {
+                    "comments" : { "data" : null }
+                },
+                "links" : {
+                    "self" : "http://example.com/people/9"
+                }
+            }]
+        }
+EOL;
+        // remove formatting from 'expected'
+        $expected = json_encode(json_decode($expected));
+
+        $this->assertEquals($expected, $actual);
+    }
 }