diff --git a/Classes/Connection/Elasticsearch/Facet.php b/Classes/Connection/Elasticsearch/Facet.php
index 7893f5f..e24a659 100644
--- a/Classes/Connection/Elasticsearch/Facet.php
+++ b/Classes/Connection/Elasticsearch/Facet.php
@@ -87,7 +87,7 @@ class Facet implements FacetInterface
         }
 
         foreach ($this->buckets as $bucket) {
-            $this->options[] = new FacetOption($bucket);
+            $this->options[$bucket['key']] = new FacetOption($bucket);
         }
     }
 }
diff --git a/Classes/Connection/Elasticsearch/IndexFactory.php b/Classes/Connection/Elasticsearch/IndexFactory.php
index 019b091..66b448b 100644
--- a/Classes/Connection/Elasticsearch/IndexFactory.php
+++ b/Classes/Connection/Elasticsearch/IndexFactory.php
@@ -20,8 +20,11 @@ namespace Codappix\SearchCore\Connection\Elasticsearch;
  * 02110-1301, USA.
  */
 
+use Codappix\SearchCore\Configuration\ConfigurationContainerInterface;
+use Codappix\SearchCore\Configuration\InvalidArgumentException;
 use Elastica\Exception\ResponseException;
 use TYPO3\CMS\Core\SingletonInterface as Singleton;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface;
 
 /**
@@ -31,6 +34,19 @@ use TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface;
  */
 class IndexFactory implements Singleton
 {
+    /**
+     * @var ConfigurationContainerInterface
+     */
+    protected $configuration;
+
+    /**
+     * @param ConfigurationContainerInterface $configuration
+     */
+    public function __construct(ConfigurationContainerInterface $configuration)
+    {
+        $this->configuration = $configuration;
+    }
+
     /**
      * Get an index bases on TYPO3 table name.
      *
@@ -41,19 +57,52 @@ class IndexFactory implements Singleton
      */
     public function getIndex(Connection $connection, $documentType)
     {
-        // TODO: Fetch index name from configuration, based on $documentType.
         $index = $connection->getClient()->getIndex('typo3content');
 
-        try {
-            // TODO: Provide configuration?!
-            // http://elastica.io/getting-started/storing-and-indexing-documents.html#section-analysis
-            $index->create();
-        } catch (ResponseException $exception) {
-            if (stripos($exception->getMessage(), 'already exists') === false) {
-                throw $exception;
-            }
+        if ($index->exists() === false) {
+            $index->create($this->getConfigurationFor($documentType));
         }
 
         return $index;
     }
+
+    /**
+     * @param string $documentType
+     *
+     * @return array
+     */
+    protected function getConfigurationFor($documentType)
+    {
+        try {
+            $configuration = $this->configuration->get('indexing.' . $documentType . '.index');
+
+            if (isset($configuration['analysis']['analyzer'])) {
+                foreach ($configuration['analysis']['analyzer'] as $key => $analyzer) {
+                    $configuration['analysis']['analyzer'][$key] = $this->prepareAnalyzerConfiguration($analyzer);
+                }
+            }
+
+            return $configuration;
+        } catch (InvalidArgumentException $e) {
+            return [];
+        }
+    }
+
+    /**
+     * @param array $analyzer
+     *
+     * @return array
+     */
+    protected function prepareAnalyzerConfiguration(array $analyzer)
+    {
+        $fieldsToExplode = ['char_filter', 'filter'];
+
+        foreach ($fieldsToExplode as $fieldToExplode) {
+            if (isset($analyzer[$fieldToExplode])) {
+                $analyzer[$fieldToExplode] = GeneralUtility::trimExplode(',', $analyzer[$fieldToExplode], true);
+            }
+        }
+
+        return $analyzer;
+    }
 }
diff --git a/Classes/Connection/Elasticsearch/MappingFactory.php b/Classes/Connection/Elasticsearch/MappingFactory.php
index d4ac037..44a05c1 100644
--- a/Classes/Connection/Elasticsearch/MappingFactory.php
+++ b/Classes/Connection/Elasticsearch/MappingFactory.php
@@ -53,7 +53,13 @@ class MappingFactory implements Singleton
     {
         $mapping = new \Elastica\Type\Mapping();
         $mapping->setType($type);
-        $mapping->setProperties($this->getConfiguration($type->getName()));
+
+        $configuration = $this->getConfiguration($type->getName());
+        if (isset($configuration['_all'])) {
+            $mapping->setAllField($configuration['_all']);
+            unset($configuration['_all']);
+        }
+        $mapping->setProperties($configuration);
 
         return $mapping;
     }
diff --git a/Classes/Connection/Elasticsearch/SearchResult.php b/Classes/Connection/Elasticsearch/SearchResult.php
index f8ffdd8..486b6eb 100644
--- a/Classes/Connection/Elasticsearch/SearchResult.php
+++ b/Classes/Connection/Elasticsearch/SearchResult.php
@@ -140,7 +140,7 @@ class SearchResult implements SearchResultInterface
         }
 
         foreach ($this->result->getAggregations() as $aggregationName => $aggregation) {
-            $this->facets[] = $this->objectManager->get(Facet::class, $aggregationName, $aggregation);
+            $this->facets[$aggregationName] = $this->objectManager->get(Facet::class, $aggregationName, $aggregation);
         }
     }
 }
diff --git a/Classes/Connection/SearchRequestInterface.php b/Classes/Connection/SearchRequestInterface.php
index ee779f7..7ec34ff 100644
--- a/Classes/Connection/SearchRequestInterface.php
+++ b/Classes/Connection/SearchRequestInterface.php
@@ -41,4 +41,11 @@ interface SearchRequestInterface
      * @return array
      */
     public function getFilter();
+
+    /**
+     * Defines how many results should be fetched.
+     *
+     * @return int
+     */
+    public function getSize();
 }
diff --git a/Classes/Domain/Index/AbstractIndexer.php b/Classes/Domain/Index/AbstractIndexer.php
index b780dc5..475532b 100644
--- a/Classes/Domain/Index/AbstractIndexer.php
+++ b/Classes/Domain/Index/AbstractIndexer.php
@@ -83,8 +83,7 @@ abstract class AbstractIndexer implements IndexerInterface
     protected function getRecordGenerator()
     {
         $offset = 0;
-        // TODO: Make configurable.
-        $limit = 50;
+        $limit = $this->getLimit();
 
         while (($records = $this->getRecords($offset, $limit)) !== []) {
             yield $records;
@@ -92,6 +91,17 @@ abstract class AbstractIndexer implements IndexerInterface
         }
     }
 
+    /**
+     * Returns the limit to use to fetch records.
+     *
+     * @return int
+     */
+    protected function getLimit()
+    {
+        // TODO: Make configurable.
+        return 50;
+    }
+
     /**
      * @param int $offset
      * @param int $limit
diff --git a/Classes/Domain/Model/SearchRequest.php b/Classes/Domain/Model/SearchRequest.php
index 163f65a..7850b98 100644
--- a/Classes/Domain/Model/SearchRequest.php
+++ b/Classes/Domain/Model/SearchRequest.php
@@ -35,6 +35,11 @@ class SearchRequest implements SearchRequestInterface
      */
     protected $query = '';
 
+    /**
+     * @var int
+     */
+    protected $size = 10;
+
     /**
      * @var array
      */
@@ -112,4 +117,20 @@ class SearchRequest implements SearchRequestInterface
     {
         return $this->facets;
     }
+
+    /**
+     * @return int
+     */
+    public function getSize()
+    {
+        return $this->size;
+    }
+
+    /**
+     * @param int $size
+     */
+    public function setSize($size)
+    {
+        $this->size = (int) $size;
+    }
 }
diff --git a/Classes/Domain/Search/QueryFactory.php b/Classes/Domain/Search/QueryFactory.php
index 7809fb6..ce702f9 100644
--- a/Classes/Domain/Search/QueryFactory.php
+++ b/Classes/Domain/Search/QueryFactory.php
@@ -20,6 +20,8 @@ namespace Codappix\SearchCore\Domain\Search;
  * 02110-1301, USA.
  */
 
+use Codappix\SearchCore\Configuration\ConfigurationContainerInterface;
+use Codappix\SearchCore\Configuration\InvalidArgumentException;
 use Codappix\SearchCore\Connection\ConnectionInterface;
 use Codappix\SearchCore\Connection\Elasticsearch\Query;
 use Codappix\SearchCore\Connection\SearchRequestInterface;
@@ -32,6 +34,11 @@ class QueryFactory
      */
     protected $logger;
 
+    /**
+     * @var ConfigurationContainerInterface
+     */
+    protected $configuration;
+
     /**
      * @var array
      */
@@ -39,13 +46,21 @@ class QueryFactory
 
     /**
      * @param \TYPO3\CMS\Core\Log\LogManager $logManager
+     * @param ConfigurationContainerInterface $configuration
      */
-    public function __construct(\TYPO3\CMS\Core\Log\LogManager $logManager)
-    {
+    public function __construct(
+        \TYPO3\CMS\Core\Log\LogManager $logManager,
+        ConfigurationContainerInterface $configuration
+    ) {
         $this->logger = $logManager->getLogger(__CLASS__);
+        $this->configuration = $configuration;
     }
 
     /**
+     * TODO: This is not in scope Elasticsearch, therefore it should not return
+     * \Elastica\Query, but decide to use a more specific QueryFactory like
+     * ElasticaQueryFactory, once the second query is added?
+     *
      * @param SearchRequestInterface $searchRequest
      *
      * @return \Elastica\Query
@@ -58,39 +73,103 @@ class QueryFactory
     /**
      * @param SearchRequestInterface $searchRequest
      *
-     * TODO: This is not in scope Elasticsearch, therefore should not return elastica.
      * @return \Elastica\Query
      */
     protected function createElasticaQuery(SearchRequestInterface $searchRequest)
     {
+        $this->addSize($searchRequest);
         $this->addSearch($searchRequest);
+        $this->addBoosts($searchRequest);
         $this->addFilter($searchRequest);
         $this->addFacets($searchRequest);
 
+        // Use last, as it might change structure of query.
+        // Better approach would be something like DQL to generate query and build result in the end.
+        $this->addFactorBoost();
+
         $this->logger->debug('Generated elasticsearch query.', [$this->query]);
         return new \Elastica\Query($this->query);
     }
 
+    /**
+     * @param SearchRequestInterface $searchRequest
+     */
+    protected function addSize(SearchRequestInterface $searchRequest)
+    {
+        $this->query = ArrayUtility::arrayMergeRecursiveOverrule($this->query, [
+            'from' => 0,
+            'size' => $searchRequest->getSize(),
+        ]);
+    }
+
     /**
      * @param SearchRequestInterface $searchRequest
      */
     protected function addSearch(SearchRequestInterface $searchRequest)
     {
+        $this->query = ArrayUtility::setValueByPath(
+            $this->query,
+            'query.bool.must.0.match._all.query',
+            $searchRequest->getSearchTerm()
+        );
+
+        $minimumShouldMatch = $this->configuration->getIfExists('searching.minimumShouldMatch');
+        if ($minimumShouldMatch) {
+            $this->query = ArrayUtility::setValueByPath(
+                $this->query,
+                'query.bool.must.0.match._all.minimum_should_match',
+                $minimumShouldMatch
+            );
+        }
+    }
+
+    /**
+     * @param SearchRequestInterface $searchRequest
+     */
+    protected function addBoosts(SearchRequestInterface $searchRequest)
+    {
+        try {
+            $fields = $this->configuration->get('searching.boost');
+        } catch (InvalidArgumentException $e) {
+            return;
+        }
+
+        $boostQueryParts = [];
+
+        foreach ($fields as $fieldName => $boostValue) {
+            $boostQueryParts[] = [
+                'match' => [
+                    $fieldName => [
+                        'query' => $searchRequest->getSearchTerm(),
+                        'boost' => $boostValue,
+                    ],
+                ],
+            ];
+        }
+
         $this->query = ArrayUtility::arrayMergeRecursiveOverrule($this->query, [
             'query' => [
                 'bool' => [
-                    'must' => [
-                        [
-                            'match' => [
-                                '_all' => $searchRequest->getSearchTerm()
-                            ],
-                        ],
-                    ],
+                    'should' => $boostQueryParts,
                 ],
             ],
         ]);
     }
 
+    protected function addFactorBoost()
+    {
+        try {
+            $this->query['query'] = [
+                'function_score' => [
+                    'query' => $this->query['query'],
+                    'field_value_factor' => $this->configuration->get('searching.fieldValueFactor'),
+                ],
+            ];
+        } catch (InvalidArgumentException $e) {
+            return;
+        }
+    }
+
     /**
      * @param SearchRequestInterface $searchRequest
      */
diff --git a/Classes/Domain/Search/SearchService.php b/Classes/Domain/Search/SearchService.php
index 158d9d1..bb8b138 100644
--- a/Classes/Domain/Search/SearchService.php
+++ b/Classes/Domain/Search/SearchService.php
@@ -69,11 +69,24 @@ class SearchService
      */
     public function search(SearchRequestInterface $searchRequest)
     {
+        $this->addSize($searchRequest);
         $this->addConfiguredFacets($searchRequest);
 
         return $this->connection->search($searchRequest);
     }
 
+    /**
+     * Add configured size of search result items to request.
+     *
+     * @param SearchRequestInterface $searchRequest
+     */
+    protected function addSize(SearchRequestInterface $searchRequest)
+    {
+        $searchRequest->setSize(
+            $this->configuration->getIfExists('searching.size') ?: 10
+        );
+    }
+
     /**
      * Add facets from configuration to request.
      *
diff --git a/Documentation/source/configuration.rst b/Documentation/source/configuration.rst
index 3d8db75..a923ff7 100644
--- a/Documentation/source/configuration.rst
+++ b/Documentation/source/configuration.rst
@@ -184,11 +184,60 @@ options are available:
     makes building a facet possible.
 
 
+.. _index:
+
+``index``
+"""""""""
+
+    Used by: Elasticsearch connection while indexing.
+
+    Define index for Elasticsearch, have a look at the official docs: https://www.elastic.co/guide/en/elasticsearch/reference/5.2/indices-create-index.html
+
+    Example::
+
+        plugin.tx_searchcore.settings.indexing.tt_content.index {
+            analysis {
+                analyzer {
+                    ngram4 {
+                        type = custom
+                        tokenizer = ngram4
+                        char_filter = html_strip
+                        filter = lowercase, asciifolding
+                    }
+                }
+
+                tokenizer {
+                    ngram4 {
+                        type = ngram
+                        min_gram = 4
+                        max_gram = 4
+                    }
+                }
+            }
+        }
+
+    ``char_filter`` and ``filter`` are a comma separated list of options.
+
 .. _configuration_options_search:
 
 Searching
 ^^^^^^^^^
 
+.. _size:
+
+``size``
+""""""""
+
+    Used by: Elasticsearch connection while building search query.
+
+    Defined how many search results should be fetched to be available in search result.
+
+    Example::
+
+        plugin.tx_searchcore.settings.searching.size = 50
+
+    Default if not configured is 10.
+
 .. _facets:
 
 ``facets``
@@ -209,3 +258,54 @@ Searching
 
     The above example will provide a facet with options for all found ``CType`` results together
     with a count.
+
+.. _minimumShouldMatch:
+
+``minimumShouldMatch``
+""""""""""""""""""""""
+
+    Used by: Elasticsearch connection while building search query.
+
+    Define the minimum match for Elasticsearch, have a look at the official docs: https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-minimum-should-match.html
+
+    Example::
+
+        plugin.tx_searchcore.settings.searching.minimumShouldMatch = 50%
+
+.. _boost:
+
+``boost``
+"""""""""
+
+    Used by: Elasticsearch connection while building search query.
+
+    Define fields that should boost the score for results.
+
+    Example::
+
+        plugin.tx_searchcore.settings.searching.boost {
+            search_title = 3
+            search_abstract = 1.5
+        }
+
+    For further information take a look at
+    https://www.elastic.co/guide/en/elasticsearch/guide/2.x/_boosting_query_clauses.html
+
+.. _fieldValueFactor:
+
+``fieldValueFactor``
+""""""""""""""""""""
+
+    Used by: Elasticsearch connection while building search query.
+
+    Define a field to use as a factor for scoring. The configuration is passed through to elastic
+    search ``field_value_factor``, see: https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-function-score-query.html#function-field-value-factor
+
+    Example::
+
+        plugin.tx_searchcore.settings.searching.field_value_factor {
+            field = rootlineLevel
+            modifier = reciprocal
+            factor = 2
+            missing = 1
+        }
diff --git a/Tests/Functional/Connection/Elasticsearch/FilterTest.php b/Tests/Functional/Connection/Elasticsearch/FilterTest.php
index f0b8404..e364a4a 100644
--- a/Tests/Functional/Connection/Elasticsearch/FilterTest.php
+++ b/Tests/Functional/Connection/Elasticsearch/FilterTest.php
@@ -78,16 +78,16 @@ class FilterTest extends AbstractFunctionalTestCase
 
         $this->assertSame(1, count($result->getFacets()), 'Did not receive the single defined facet.');
 
-        $facet = $result->getFacets()[0];
+        $facet = current($result->getFacets());
         $this->assertSame('contentTypes', $facet->getName(), 'Name of facet was not as expected.');
         $this->assertSame('CType', $facet->getField(), 'Field of facet was not expected.');
 
         $options = $facet->getOptions();
         $this->assertSame(2, count($options), 'Did not receive the expected number of possible options for facet.');
-        $option = $options[0];
+        $option = $options['HTML'];
         $this->assertSame('HTML', $option->getName(), 'Option did not have expected Name.');
         $this->assertSame(1, $option->getCount(), 'Option did not have expected count.');
-        $option = $options[1];
+        $option = $options['Header'];
         $this->assertSame('Header', $option->getName(), 'Option did not have expected Name.');
         $this->assertSame(1, $option->getCount(), 'Option did not have expected count.');
     }
diff --git a/Tests/Unit/Connection/Elasticsearch/IndexFactoryTest.php b/Tests/Unit/Connection/Elasticsearch/IndexFactoryTest.php
new file mode 100644
index 0000000..c73fe36
--- /dev/null
+++ b/Tests/Unit/Connection/Elasticsearch/IndexFactoryTest.php
@@ -0,0 +1,132 @@
+<?php
+namespace Codappix\SearchCore\Tests\Unit\Connection\Elasticsearch;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use Codappix\SearchCore\Configuration\ConfigurationContainerInterface;
+use Codappix\SearchCore\Connection\Elasticsearch\Connection;
+use Codappix\SearchCore\Connection\Elasticsearch\IndexFactory;
+use Codappix\SearchCore\Tests\Unit\AbstractUnitTestCase;
+
+class IndexFactoryTest extends AbstractUnitTestCase
+{
+    /**
+     * @var IndexFactory
+     */
+    protected $subject;
+
+    public function setUp()
+    {
+        parent::setUp();
+
+        $this->configuration = $this->getMockBuilder(ConfigurationContainerInterface::class)->getMock();
+        $this->subject = new IndexFactory($this->configuration);
+    }
+
+    /**
+     * @test
+     */
+    public function indexIsNotCreatedIfAlreadyExisting()
+    {
+        $indexMock = $this->getMockBuilder(\Elastica\Index::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $indexMock->expects($this->once())
+            ->method('exists')
+            ->willReturn(true);
+        $indexMock->expects($this->never())
+            ->method('create');
+        $clientMock = $this->getMockBuilder(\Elastica\Client::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $clientMock->expects($this->once())
+            ->method('getIndex')
+            ->with('typo3content')
+            ->willReturn($indexMock);
+        $connection = $this->getMockBuilder(Connection::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $connection->expects($this->once())
+            ->method('getClient')
+            ->willReturn($clientMock);
+
+        $this->subject->getIndex($connection, 'someIndex');
+    }
+
+    /**
+     * @test
+     */
+    public function typoScriptConfigurationIsProvidedToIndex()
+    {
+        $configuration = [
+            'analysis' => [
+                'analyzer' => [
+                    'ngram4' => [
+                        'type' => 'custom',
+                        'tokenizer' => 'ngram4',
+                        'char_filter' => 'html_strip',
+                        'filter' => 'lowercase, ,  asciifolding',
+                    ],
+                ],
+                'tokenizer' => [
+                    'ngram4' => [
+                        'type' => 'ngram',
+                        'min_gram' => 4,
+                        'max_gram' => 4,
+                    ],
+                ],
+            ],
+        ];
+
+        $expectedConfiguration = $configuration;
+        $expectedConfiguration['analysis']['analyzer']['ngram4']['char_filter'] = ['html_strip'];
+        $expectedConfiguration['analysis']['analyzer']['ngram4']['filter'] = ['lowercase', 'asciifolding'];
+
+        $indexMock = $this->getMockBuilder(\Elastica\Index::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $indexMock->expects($this->once())
+            ->method('exists')
+            ->willReturn(false);
+        $indexMock->expects($this->once())
+            ->method('create')
+            ->with($expectedConfiguration);
+        $clientMock = $this->getMockBuilder(\Elastica\Client::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $clientMock->expects($this->once())
+            ->method('getIndex')
+            ->with('typo3content')
+            ->willReturn($indexMock);
+        $connection = $this->getMockBuilder(Connection::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $connection->expects($this->once())
+            ->method('getClient')
+            ->willReturn($clientMock);
+
+        $this->configuration->expects($this->once())
+            ->method('get')
+            ->with('indexing.someIndex.index')
+            ->willReturn($configuration);
+
+        $this->subject->getIndex($connection, 'someIndex');
+    }
+}
diff --git a/Tests/Unit/Connection/Elasticsearch/MappingFactoryTest.php b/Tests/Unit/Connection/Elasticsearch/MappingFactoryTest.php
new file mode 100644
index 0000000..8dde1cb
--- /dev/null
+++ b/Tests/Unit/Connection/Elasticsearch/MappingFactoryTest.php
@@ -0,0 +1,86 @@
+<?php
+namespace Codappix\SearchCore\Tests\Unit\Connection\Elasticsearch;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use Codappix\SearchCore\Configuration\ConfigurationContainerInterface;
+use Codappix\SearchCore\Connection\Elasticsearch\MappingFactory;
+use Codappix\SearchCore\Tests\Unit\AbstractUnitTestCase;
+
+class MappingFactoryTest extends AbstractUnitTestCase
+{
+    /**
+     * @var MappingFactory
+     */
+    protected $subject;
+
+    public function setUp()
+    {
+        parent::setUp();
+
+        $this->configuration = $this->getMockBuilder(ConfigurationContainerInterface::class)->getMock();
+        $this->subject = new MappingFactory($this->configuration);
+    }
+
+    /**
+     * @test
+     */
+    public function typoScriptConfigurationIsProvidedToIndex()
+    {
+        $indexName = 'someIndex';
+        $configuration = [
+            '_all' => [
+                'type' => 'text',
+                'analyzer' => 'ngram4',
+            ],
+            'channel' => [
+                'type' => 'keyword',
+            ],
+        ];
+        $type = $this->getMockBuilder(\Elastica\Type::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $type->expects($this->any())
+            ->method('getName')
+            ->willReturn($indexName);
+        $this->configuration->expects($this->once())
+            ->method('get')
+            ->with('indexing.' . $indexName . '.mapping')
+            ->willReturn($configuration);
+
+        $mapping = $this->subject->getMapping($type)->toArray()[$indexName];
+        $this->assertArraySubset(
+            [
+                '_all' => $configuration['_all']
+            ],
+            $mapping,
+            true,
+            'Configuration of _all field was not set for mapping.'
+        );
+        $this->assertArraySubset(
+            [
+                'channel' => $configuration['channel']
+            ],
+            $mapping['properties'],
+            true,
+            'Configuration for properties was not set for mapping.'
+        );
+    }
+}
diff --git a/Tests/Unit/Domain/Search/QueryFactoryTest.php b/Tests/Unit/Domain/Search/QueryFactoryTest.php
index 32c8fbd..33ef852 100644
--- a/Tests/Unit/Domain/Search/QueryFactoryTest.php
+++ b/Tests/Unit/Domain/Search/QueryFactoryTest.php
@@ -20,6 +20,8 @@ namespace Codappix\SearchCore\Tests\Unit\Domain\Search;
  * 02110-1301, USA.
  */
 
+use Codappix\SearchCore\Configuration\ConfigurationContainerInterface;
+use Codappix\SearchCore\Configuration\InvalidArgumentException;
 use Codappix\SearchCore\Domain\Model\FacetRequest;
 use Codappix\SearchCore\Domain\Model\SearchRequest;
 use Codappix\SearchCore\Domain\Search\QueryFactory;
@@ -32,11 +34,17 @@ class QueryFactoryTest extends AbstractUnitTestCase
      */
     protected $subject;
 
+    /**
+     * @var ConfigurationContainerInterface
+     */
+    protected $configuration;
+
     public function setUp()
     {
         parent::setUp();
 
-        $this->subject = new QueryFactory($this->getMockedLogger());
+        $this->configuration = $this->getMockBuilder(ConfigurationContainerInterface::class)->getMock();
+        $this->subject = new QueryFactory($this->getMockedLogger(), $this->configuration);
     }
 
     /**
@@ -46,6 +54,10 @@ class QueryFactoryTest extends AbstractUnitTestCase
     {
         $searchRequest = new SearchRequest('SearchWord');
 
+        $this->configuration->expects($this->any())
+            ->method('get')
+            ->will($this->throwException(new InvalidArgumentException));
+
         $query = $this->subject->create($searchRequest);
         $this->assertInstanceOf(
             \Elastica\Query::class,
@@ -59,6 +71,10 @@ class QueryFactoryTest extends AbstractUnitTestCase
      */
     public function filterIsAddedToQuery()
     {
+        $this->configuration->expects($this->any())
+            ->method('get')
+            ->will($this->throwException(new InvalidArgumentException));
+
         $searchRequest = new SearchRequest('SearchWord');
         $searchRequest->setFilter(['field' => 'content']);
 
@@ -77,6 +93,10 @@ class QueryFactoryTest extends AbstractUnitTestCase
      */
     public function emptyFilterIsNotAddedToQuery()
     {
+        $this->configuration->expects($this->any())
+            ->method('get')
+            ->will($this->throwException(new InvalidArgumentException));
+
         $searchRequest = new SearchRequest('SearchWord');
         $searchRequest->setFilter([
             'field' => '',
@@ -97,32 +117,14 @@ class QueryFactoryTest extends AbstractUnitTestCase
         );
     }
 
-    /**
-     * @test
-     */
-    public function userInputIsAlwaysString()
-    {
-        $searchRequest = new SearchRequest(10);
-        $searchRequest->setFilter(['field' => 20]);
-
-        $query = $this->subject->create($searchRequest);
-        $this->assertSame(
-            '10',
-            $query->toArray()['query']['bool']['must'][0]['match']['_all'],
-            'Search word was not escaped as expected.'
-        );
-        $this->assertSame(
-            '20',
-            $query->toArray()['query']['bool']['filter'][0]['term']['field'],
-            'Search word was not escaped as expected.'
-        );
-    }
-
     /**
      * @test
      */
     public function facetsAreAddedToQuery()
     {
+        $this->configuration->expects($this->any())
+            ->method('get')
+            ->will($this->throwException(new InvalidArgumentException));
         $searchRequest = new SearchRequest('SearchWord');
         $searchRequest->addFacet(new FacetRequest('Identifier', 'FieldName'));
         $searchRequest->addFacet(new FacetRequest('Identifier 2', 'FieldName 2'));
@@ -145,4 +147,172 @@ class QueryFactoryTest extends AbstractUnitTestCase
             'Facets were not added to query.'
         );
     }
+
+    /**
+     * @test
+     */
+    public function sizeIsAddedToQuery()
+    {
+        $searchRequest = new SearchRequest('SearchWord');
+        $searchRequest->setSize(45);
+
+        $query = $this->subject->create($searchRequest);
+        $this->assertSame(
+            45,
+            $query->toArray()['size'],
+            'Size was not added to query.'
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function searchTermIsAddedToQuery()
+    {
+        $searchRequest = new SearchRequest('SearchWord');
+        $this->configuration->expects($this->any())
+            ->method('get')
+            ->will($this->throwException(new InvalidArgumentException));
+        $query = $this->subject->create($searchRequest);
+
+        $this->assertSame(
+            [
+                'bool' => [
+                    'must' => [
+                        [
+                            'match' => [
+                                '_all' => [
+                                    'query' => 'SearchWord',
+                                ],
+                            ],
+                        ],
+                    ],
+                ],
+            ],
+            $query->toArray()['query'],
+            'Search term was not added to query as expected.'
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function minimumShouldMatchIsAddedToQuery()
+    {
+        $searchRequest = new SearchRequest('SearchWord');
+        $this->configuration->expects($this->once())
+            ->method('getIfExists')
+            ->with('searching.minimumShouldMatch')
+            ->willReturn('50%');
+        $this->configuration->expects($this->any())
+            ->method('get')
+            ->will($this->throwException(new InvalidArgumentException));
+        $query = $this->subject->create($searchRequest);
+
+        $this->assertArraySubset(
+            [
+                'bool' => [
+                    'must' => [
+                        [
+                            'match' => [
+                                '_all' => [
+                                    'minimum_should_match' => '50%',
+                                ],
+                            ],
+                        ],
+                    ],
+                ],
+            ],
+            $query->toArray()['query'],
+            'minimum_should_match was not added to query as configured.'
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function boostsAreAddedToQuery()
+    {
+        $searchRequest = new SearchRequest('SearchWord');
+
+        $this->configuration->expects($this->exactly(2))
+            ->method('get')
+            ->withConsecutive(['searching.boost'], ['searching.fieldValueFactor'])
+            ->will($this->onConsecutiveCalls(
+                [
+                    'search_title' => 3,
+                    'search_abstract' => 1.5,
+                ],
+                $this->throwException(new InvalidArgumentException)
+            ));
+
+        $query = $this->subject->create($searchRequest);
+        $this->assertSame(
+            [
+                [
+                    'match' => [
+                        'search_title' => [
+                            'query' => 'SearchWord',
+                            'boost' => 3,
+                        ],
+                    ],
+                ],
+                [
+                    'match' => [
+                        'search_abstract' => [
+                            'query' => 'SearchWord',
+                            'boost' => 1.5,
+                        ],
+                    ],
+                ],
+            ],
+            $query->toArray()['query']['bool']['should'],
+            'Boosts were not added to query.'
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function factorBoostIsAddedToQuery()
+    {
+        $searchRequest = new SearchRequest('SearchWord');
+        $fieldConfig = [
+            'field' => 'rootlineLevel',
+            'modifier' => 'reciprocal',
+            'factor' => '2',
+            'missing' => '1',
+        ];
+        $this->configuration->expects($this->exactly(2))
+            ->method('get')
+            ->withConsecutive(['searching.boost'], ['searching.fieldValueFactor'])
+            ->will($this->onConsecutiveCalls(
+                $this->throwException(new InvalidArgumentException),
+                $fieldConfig
+            ));
+
+        $query = $this->subject->create($searchRequest);
+        $this->assertSame(
+            [
+                'function_score' => [
+                    'query' => [
+                        'bool' => [
+                            'must' => [
+                                [
+                                    'match' => [
+                                        '_all' => [
+                                            'query' => 'SearchWord',
+                                        ],
+                                    ],
+                                ],
+                            ],
+                        ],
+                    ],
+                    'field_value_factor' => $fieldConfig,
+                ],
+            ],
+            $query->toArray()['query'],
+            'Boosts were not added to query.'
+        );
+    }
 }
diff --git a/Tests/Unit/Domain/Search/SearchServiceTest.php b/Tests/Unit/Domain/Search/SearchServiceTest.php
new file mode 100644
index 0000000..6a90a3c
--- /dev/null
+++ b/Tests/Unit/Domain/Search/SearchServiceTest.php
@@ -0,0 +1,95 @@
+<?php
+namespace Copyright\SearchCore\Tests\Unit\Domain\Search;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use Codappix\SearchCore\Configuration\ConfigurationContainerInterface;
+use Codappix\SearchCore\Connection\ConnectionInterface;
+use Codappix\SearchCore\Domain\Model\SearchRequest;
+use Codappix\SearchCore\Domain\Search\SearchService;
+use Codappix\SearchCore\Tests\Unit\AbstractUnitTestCase;
+use TYPO3\CMS\Extbase\Object\ObjectManagerInterface;
+
+class SearchServiceTest extends AbstractUnitTestCase
+{
+    /**
+     * @var SearchService
+     */
+    protected $subject;
+
+    public function setUp()
+    {
+        parent::setUp();
+
+        $this->connection = $this->getMockBuilder(ConnectionInterface::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->configuration = $this->getMockBuilder(ConfigurationContainerInterface::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->objectManager = $this->getMockBuilder(ObjectManagerInterface::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $this->subject = new SearchService(
+            $this->connection,
+            $this->configuration,
+            $this->objectManager
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function sizeIsAddedFromConfiguration()
+    {
+        $this->configuration->expects($this->exactly(2))
+            ->method('getIfExists')
+            ->withConsecutive(['searching.size'], ['searching.facets'])
+            ->will($this->onConsecutiveCalls(45, null));
+        $this->connection->expects($this->once())
+            ->method('search')
+            ->with($this->callback(function ($searchRequest) {
+                return $searchRequest->getSize() === 45;
+            }));
+
+        $searchRequest = new SearchRequest('SearchWord');
+        $this->subject->search($searchRequest);
+    }
+
+    /**
+     * @test
+     */
+    public function defaultSizeIsAddedIfNothingIsConfigured()
+    {
+        $this->configuration->expects($this->exactly(2))
+            ->method('getIfExists')
+            ->withConsecutive(['searching.size'], ['searching.facets'])
+            ->will($this->onConsecutiveCalls(null, null));
+        $this->connection->expects($this->once())
+            ->method('search')
+            ->with($this->callback(function ($searchRequest) {
+                return $searchRequest->getSize() === 10;
+            }));
+
+        $searchRequest = new SearchRequest('SearchWord');
+        $this->subject->search($searchRequest);
+    }
+}