#211 - ENH: Add support for File as a bean type ... for streaming into/from db

src/test/java/com/avaje/tests/model/types/SomeFileBean.java

@@ -0,0 +1,51 @@
+package com.avaje.tests.model.types;
+
+import javax.persistence.*;
+import java.io.File;
+
+@Entity
+public class SomeFileBean {
+
+  @Id
+  Long id;
+
+  @Version
+  Long version;
+
+  String name;
+
+  @Lob
+  File file;
+
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Long getVersion() {
+    return version;
+  }
+
+  public void setVersion(Long version) {
+    this.version = version;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public File getFile() {
+    return file;
+  }
+
+  public void setFile(File file) {
+    this.file = file;
+  }
+}

src/test/java/com/avaje/tests/types/TestFileType.java

@@ -0,0 +1,111 @@
+package com.avaje.tests.types;
+
+import com.avaje.ebean.BaseTestCase;
+import com.avaje.ebean.Ebean;
+import com.avaje.tests.model.types.SomeFileBean;
+import org.junit.Test;
+
+import java.io.File;
+import java.net.URL;
+
+import static org.junit.Assert.*;
+
+public class TestFileType extends BaseTestCase {
+
+  File file = getFile("/profile-image.jpg");
+  File file2 = getFile("/java-64.png");
+
+  @Test
+  public void test_insertNullFile() {
+
+    assertTrue(file.exists());
+    assertTrue(file2.exists());
+
+    SomeFileBean bean0 = new SomeFileBean();
+    bean0.setName("afile");
+    Ebean.save(bean0);
+
+    SomeFileBean bean1 = Ebean.find(SomeFileBean.class)
+            .select("name, file")
+            .setId(bean0.getId())
+            .findUnique();
+
+    assertEquals("afile", bean1.getName());
+    assertNull(bean1.getFile());
+
+    bean1.setFile(file);
+    Ebean.save(bean1);
+
+    SomeFileBean bean2 = Ebean.find(SomeFileBean.class)
+            .select("name, file")
+            .setId(bean0.getId())
+            .findUnique();
+
+    assertEquals("afile", bean2.getName());
+    assertNotNull(bean2.getFile());
+    System.out.println("test_insertNullFile: bean2: "+bean2.getFile());
+
+    Ebean.delete(bean1);
+  }
+
+    @Test
+  public void test_insertUpdateDelete() {
+
+    assertTrue(file.exists());
+    assertTrue(file2.exists());
+
+    SomeFileBean bean0 = new SomeFileBean();
+    bean0.setName("afile");
+    bean0.setFile(file);
+
+    Ebean.save(bean0);
+
+    SomeFileBean bean1 = Ebean.find(SomeFileBean.class)
+            .select("name, file")
+            .setId(bean0.getId())
+            .findUnique();
+
+    assertEquals("afile", bean1.getName());
+    assertNotNull(bean1.getFile());
+    assertEquals(file.length(), bean1.getFile().length());
+    System.out.println("t2 bean1: " + bean1.getFile().getAbsoluteFile());
+
+    bean1.setName("mod-file");
+    bean1.setFile(file2);
+    // update to file2
+    Ebean.save(bean1);
+
+
+    SomeFileBean bean2 = Ebean.find(SomeFileBean.class)
+            .select("name, file")
+            .setId(bean0.getId())
+            .findUnique();
+
+    assertEquals(file2.length(), bean2.getFile().length());
+    System.out.println("t2 bean3: " + bean2.getFile().getAbsoluteFile());
+
+    // update to null
+    bean2.setFile(null);
+    bean2.setName("setNull");
+    Ebean.save(bean2);
+
+    SomeFileBean bean3 = Ebean.find(SomeFileBean.class)
+            .select("name, file")
+            .setId(bean0.getId())
+            .findUnique();
+
+    assertNull(bean3.getFile());
+    System.out.println("t2 bean3: " + bean3.getFile());
+
+    bean3.setName("changeOnlyName");
+    Ebean.save(bean3);
+
+    Ebean.delete(bean3);
+  }
+
+  private File getFile(String resource) {
+    URL url = getClass().getResource(resource);
+    return new File(url.getFile());
+  }
+
+}

src/test/java/com/avaje/tests/types/TestFileTypeFetching.java

@@ -0,0 +1,65 @@
+package com.avaje.tests.types;
+
+import com.avaje.ebean.BaseTestCase;
+import com.avaje.ebean.BeanState;
+import com.avaje.ebean.Ebean;
+import com.avaje.tests.model.types.SomeFileBean;
+import org.junit.Test;
+
+import java.io.File;
+import java.net.URL;
+import java.util.Set;
+
+import static org.junit.Assert.*;
+
+public class TestFileTypeFetching extends BaseTestCase {
+
+  File file = getFile("/profile-image.jpg");
+  File file2 = getFile("/java-64.png");
+
+  @Test
+  public void test_lazyFetch_statelessUpdate() {
+
+    assertTrue(file.exists());
+
+    SomeFileBean bean0 = new SomeFileBean();
+    bean0.setName("one");
+    bean0.setFile(file);
+    Ebean.save(bean0);
+
+    SomeFileBean bean1 = Ebean.find(SomeFileBean.class)
+            .setId(bean0.getId())
+            .findUnique();
+
+    BeanState beanState = Ebean.getBeanState(bean1);
+    Set<String> loadedProps = beanState.getLoadedProps();
+    assertTrue(loadedProps.contains("name"));
+    assertFalse(loadedProps.contains("file"));
+
+    File file1 = bean1.getFile();
+    assertEquals(file.length(), file1.length());
+
+
+    SomeFileBean statelessUpdateBean = new SomeFileBean();
+    statelessUpdateBean.setId(bean0.getId());
+    statelessUpdateBean.setFile(file2);
+
+    // perform stateless update (handy)
+    Ebean.update(statelessUpdateBean);
+
+    SomeFileBean bean2 = Ebean.find(SomeFileBean.class)
+            .select("file")
+            .setId(bean0.getId())
+            .findUnique();
+
+    assertEquals(file2.length(), bean2.getFile().length());
+
+    Ebean.delete(bean1);
+  }
+
+  private File getFile(String resource) {
+    URL url = getClass().getResource(resource);
+    return new File(url.getFile());
+  }
+
+}