Added conditions on table level. Now you can define which rows are to…

… select. #4

README.md

@@ -58,6 +58,19 @@ Example:
 </slimdump>
 ```
 
+### Conditions
+
+You may want to select only some rows. In that case you can define a condition on a table.
+
+Example:
+```xml
+<?xml version="1.0" ?>
+<slimdump>
+  <!-- Dump all users whose usernames begin with foo -->
+  <table name="user" dump="full" condition="`username` LIKE 'foo%'" />
+</slimdump>
+```
+
 ### Dump modes
 
 The following modes are supported for the `dump` attribute:

src/Webfactory/Slimdump/Config/Table.php

@@ -16,6 +16,8 @@ class Table
 {
     private $selector;
     private $dump;
+    /** @var \SimpleXMLElement */
+    private $config;
 
     private $columns = array();
 
@@ -26,6 +28,8 @@ class Table
      */
     public function __construct(\SimpleXMLElement $config)
     {
+        $this->config = $config;
+
         $attr = $config->attributes();
         $this->selector = (string) $attr->name;
 
@@ -118,6 +122,18 @@ public function getStringForInsertStatement($columnName, $value, $isBlobColumn,
         }
     }
 
+    /**
+     * @return string - The WHERE condition.
+     */
+    public function getCondition()
+    {
+        $condition = (string)$this->config->attributes()->condition;
+
+        if (trim($condition) !== '') {
+            return ' WHERE ' . $condition;
+        }
+    }
+
     /**
      * @param string $columnName
      *

src/Webfactory/Slimdump/Database/Dumper.php

@@ -85,6 +85,8 @@ public function dumpData($table, Table $tableConfig, Connection $db)
         }
         $s .= " FROM `$table`";
 
+        $s .= $tableConfig->getCondition();
+
         $this->output->writeln("-- BEGIN DATA $table");
 
         $bufferSize = 0;

test/Webfactory/Slimdump/Config/TableTest.php

@@ -70,4 +70,30 @@ public function testInvalidConfiguration()
         new Table($xmlElement);
     }
 
+    public function testSelectCondition()
+    {
+        $xml = '<?xml version="1.0" ?>
+                <table name="dicht*" dump="full" condition="`first_name` LIKE \'foo%\'" />';
+
+        $xmlElement = new \SimpleXMLElement($xml);
+
+        $table = new Table($xmlElement);
+
+        $this->assertTrue($table->isDataDumpRequired());
+        $this->assertEquals(' WHERE `first_name` LIKE \'foo%\'', $table->getCondition());
+    }
+
+    public function testSelectConditionWhenConditionIsEmpty()
+    {
+        $xml = '<?xml version="1.0" ?>
+                <table name="dicht*" dump="full" condition="   " />';
+
+        $xmlElement = new \SimpleXMLElement($xml);
+
+        $table = new Table($xmlElement);
+
+        $this->assertTrue($table->isDataDumpRequired());
+        $this->assertEquals('', $table->getCondition());
+    }
+
 }