moved generic converter to spi; added entity converter; removed various service impls in favor of service factory

org.springframework.core/src/test/java/org/springframework/core/convert/support/EntityConverterTests.java

@@ -0,0 +1,47 @@
+package org.springframework.core.convert.support;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class EntityConverterTests {
+	
+	private GenericConversionService conversionService = new GenericConversionService();
+	
+	@Before
+	public void setUp() {
+		conversionService.addConverter(new ObjectToStringConverter());
+		conversionService.addGenericConverter(new EntityConverter(conversionService));
+	}
+	
+	@Test
+	public void testToEntityReference() {
+		conversionService.addConverterFactory(new StringToNumberConverterFactory());
+		TestEntity e = conversionService.convert("1", TestEntity.class);
+		assertEquals(new Long(1), e.getId());
+	}
+	
+	@Test
+	public void testToEntityId() {
+		String id = conversionService.convert(new TestEntity(1L), String.class);
+		assertEquals("1", id);		
+	}
+	
+	public static class TestEntity {
+
+		private Long id;
+		
+		public TestEntity(Long id) {
+			this.id = id;
+		}
+		
+		public Long getId() {
+			return id;
+		}
+		
+		public static TestEntity findTestEntity(Long id) {
+			return new TestEntity(id);
+		}
+	}
+}