Removing Dependency from SDK Core Project

- Copied files required for Rest API SDK
- Removed PPApiContext and directly connected APIContext with PPConfigManager
- Removed duplicate data storage of configuration and credentials.
- Code Style Fixes
- Remove build.xml file as it is not required anymore
- Updated the samples
- Updated the documentations

tests/PayPal/Test/Common/PPModelTest.php

@@ -0,0 +1,228 @@
+<?php
+
+use PayPal\Common\PPModel;
+
+class SimpleModelTestClass extends PPModel {
+	/**
+	 *
+	 * @access public
+	 * @param string $field1
+	 */
+	public function setField1($field1) {
+		$this->field1 = $field1;
+		return $this;
+	}
+	
+	/**
+	 *
+	 * @access public
+	 * @return string
+	 */
+	public function getField1() {
+		return $this->field1;
+	}
+	
+	/**
+	 *
+	 * @access public
+	 * @param string $field2
+	 */
+	public function setField2($field2) {
+		$this->field2 = $field2;
+		return $this;
+	}
+	
+	/**
+	 *
+	 * @access public
+	 * @return string
+	 */
+	public function getField2() {
+		return $this->field2;
+	}
+	
+}
+
+
+
+class ContainerModelTestClass extends PPModel {
+
+	/**
+	 *
+	 * @access public
+	 * @param string $field1
+	 */
+	public function setField1($field1) {
+		$this->field1 = $field1;
+		return $this;
+	}
+
+	/**
+	 *
+	 * @access public
+	 * @return string
+	 */
+	public function getField1() {
+		return $this->field1;
+	}
+
+	/**
+	 *
+	 * @access public
+	 * @param SimpleModelTestClass $field1
+	 */
+	public function setNested1($nested1) {
+		$this->nested1 = $nested1;
+		return $this;
+	}
+
+	/**
+	 *
+	 * @access public
+	 * @return SimpleModelTestClass
+	 */
+	public function getNested1() {
+		return $this->nested1;
+	}
+
+
+}
+
+class ListModelTestClass extends PPModel {
+
+	/**
+	 *
+	 * @access public
+	 * @param string $list1
+	 */
+	public function setList1($list1) {
+		$this->list1 = $list1;
+	}
+
+	/**
+	 *
+	 * @access public
+	 * @return string
+	 */
+	public function getList1() {
+		return $this->list1;
+	}
+
+	/**
+	 *
+	 * @access public
+	 * @param SimpleModelTestClass $list2 array of SimpleModelTestClass
+	 */
+	public function setList2($list2) {
+		$this->list2 = $list2;
+		return $this;
+	}
+
+	/**
+	 *
+	 * @access public
+	 * @return SimpleModelTestClass array of SimpleModelTestClass
+	 */
+	public function getList2() {
+		return $this->list2;
+	}
+
+
+}
+
+/**
+ * Test class for PPModel.
+ *
+ */
+class PPModelTest extends PHPUnit_Framework_TestCase
+{
+	/**
+	 * Sets up the fixture, for example, opens a network connection.
+	 * This method is called before a test is executed.
+	 */
+	protected function setUp() {
+		
+	}
+	
+	/**
+	 * Tears down the fixture, for example, closes a network connection.
+	 * This method is called after a test is executed.
+	 */
+	protected function tearDown() {
+	}
+	
+	/**
+	 * @test
+	 */
+	public function testSimpleConversion() {
+		$o = new SimpleModelTestClass();
+		$o->setField1('value 1');
+		$o->setField2("value 2");
+		
+		$this->assertEquals('{"field1":"value 1","field2":"value 2"}', $o->toJSON());
+		
+		$oCopy = new SimpleModelTestClass();
+		$oCopy->fromJson($o->toJSON());		
+		$this->assertEquals($o, $oCopy);
+				
+	}
+	
+	/**
+	 * @test
+	 */
+	public function testSpecialChars() {
+		$o = new SimpleModelTestClass();
+		$o->setField1('value "1');
+		$o->setField2("value 2");
+	
+		$this->assertEquals('{"field1":"value \"1","field2":"value 2"}', $o->toJSON());
+	
+		$oCopy = new SimpleModelTestClass();
+		$oCopy->fromJson($o->toJSON());
+		$this->assertEquals($o, $oCopy);
+	
+	}
+	
+	
+	/**
+	 * @test
+	 */
+	public function testNestedConversion() {
+		$child = new SimpleModelTestClass();
+		$child->setField1('value 1');
+		$child->setField2("value 2");
+		
+		$parent = new ContainerModelTestClass();
+		$parent->setField1("parent");
+		$parent->setNested1($child);
+	
+		$this->assertEquals('{"field1":"parent","nested1":{"field1":"value 1","field2":"value 2"}}', 
+				$parent->toJSON());
+	
+		$parentCopy = new ContainerModelTestClass();
+		$parentCopy->fromJson($parent->toJSON());
+		$this->assertEquals($parent, $parentCopy);
+	
+	}
+	
+	
+	/**
+	 * @test
+	 */
+	public function testListConversion() {
+		$c1 = new SimpleModelTestClass();
+		$c1->setField1("a")->setField2('value');
+		
+		$c2 = new SimpleModelTestClass();
+		$c1->setField1("another")->setField2('object');
+		
+		$parent = new ListModelTestClass();
+		$parent->setList1(array('simple', 'list', 'with', 'integer', 'keys'));
+		$parent->setList2(array($c1, $c2));
+		
+		$parentCopy = new ListModelTestClass();
+		$parentCopy->fromJson($parent->toJSON());
+		$this->assertEquals($parent, $parentCopy);
+	
+	}
+}