favor req.file(name) over req.param(name).toUpload fix #819

Optional Upload with malformed file multipart part fix #803

jooby/src/main/java/org/jooby/Jooby.java

@@ -2669,7 +2669,6 @@ private Injector bootstrap(final Config args,
       parsers.addBinding().toInstance(BuiltinParser.Collection);
       parsers.addBinding().toInstance(BuiltinParser.Optional);
       parsers.addBinding().toInstance(BuiltinParser.Enum);
-      parsers.addBinding().toInstance(BuiltinParser.Upload);
       parsers.addBinding().toInstance(BuiltinParser.Bytes);
 
       /** basic render */

jooby/src/main/java/org/jooby/Mutant.java

@@ -264,8 +264,7 @@ default SortedSet<String> toSortedSet() {
   @SuppressWarnings("unchecked")
   default <T extends Comparable<T>> SortedSet<T> toSortedSet(final Class<T> type) {
     return (SortedSet<T>) to(TypeLiteral.get(
-        Types.newParameterizedType(SortedSet.class, Primitives.wrap(type))
-        ));
+        Types.newParameterizedType(SortedSet.class, Primitives.wrap(type))));
   }
 
   /**
@@ -283,17 +282,7 @@ default Optional<String> toOptional() {
   @SuppressWarnings("unchecked")
   default <T> Optional<T> toOptional(final Class<T> type) {
     return (Optional<T>) to(TypeLiteral.get(
-        Types.newParameterizedType(Optional.class, Primitives.wrap(type))
-        ));
-  }
-
-  /**
-   * Convert a form field to file {@link Upload}.
-   *
-   * @return A file {@link Upload}.
-   */
-  default Upload toUpload() {
-    return to(Upload.class);
+        Types.newParameterizedType(Optional.class, Primitives.wrap(type))));
   }
 
   /**

jooby/src/main/java/org/jooby/Parser.java

@@ -281,25 +281,6 @@ interface Builder {
      */
     Builder ifparams(Callback<Map<String, Mutant>> callback);
 
-    /**
-     * Add a HTTP upload callback. The Callback will be executed when current context is bound to a
-     * HTTP upload via {@link Request#param(String)}.
-     *
-     * If current {@link Context} isn't a HTTP upload a call to {@link Context#next()} is made.
-     *
-     * @param callback A upload parser callback.
-     * @return This builder.
-     */
-    Builder upload(Callback<ParamReference<Upload>> callback);
-
-    /**
-     * Like {@link #upload(Callback)} but it skip the callback if the requested type is an
-     * {@link Optional}.
-     *
-     * @param callback A upload parser callback.
-     * @return This builder.
-     */
-    Builder ifupload(Callback<ParamReference<Upload>> callback);
   }
 
   /**

jooby/src/main/java/org/jooby/Request.java

@@ -20,6 +20,7 @@
 
 import static java.util.Objects.requireNonNull;
 
+import java.io.IOException;
 import java.nio.charset.Charset;
 import java.util.List;
 import java.util.Locale;
@@ -232,12 +233,12 @@ public Mutant param(final String name, final String... xss) {
     }
 
     @Override
-    public Upload file(final String name) {
+    public Upload file(final String name) throws IOException {
       return req.file(name);
     }
 
     @Override
-    public List<Upload> files(final String name) {
+    public List<Upload> files(final String name) throws IOException {
       return req.files(name);
     }
 
@@ -828,9 +829,27 @@ default <T> T form(final Class<T> type, final String... xss) {
    *
    * @param name File's name.
    * @return An {@link Upload}.
+   * @throws IOException
    */
-  default Upload file(final String name) {
-    return param(name).toUpload();
+  default Upload file(final String name) throws IOException {
+    List<Upload> files = files(name);
+    if (files.size() == 0) {
+      throw new Err.Missing(name);
+    }
+    return files.get(0);
+  }
+
+  /**
+   * Get a file {@link Upload} with the given name or empty. The request must be a POST with
+   * <code>multipart/form-data</code> content-type.
+   *
+   * @param name File's name.
+   * @return An {@link Upload}.
+   * @throws IOException
+   */
+  default Optional<Upload> ifFile(final String name) throws IOException {
+    List<Upload> files = files(name);
+    return files.size() == 0 ? Optional.empty() : Optional.of(files.get(0));
   }
 
   /**
@@ -839,10 +858,9 @@ default Upload file(final String name) {
    *
    * @param name File's name.
    * @return A list of {@link Upload}.
+   * @throws IOException
    */
-  default List<Upload> files(final String name) {
-    return param(name).toList(Upload.class);
-  }
+  List<Upload> files(final String name) throws IOException;
 
   /**
    * Get a HTTP header.

jooby/src/main/java/org/jooby/internal/BuiltinParser.java

@@ -35,7 +35,6 @@
 import java.util.function.Supplier;
 
 import org.jooby.Parser;
-import org.jooby.Upload;
 
 import com.google.common.collect.ImmutableCollection;
 import com.google.common.collect.ImmutableList;
@@ -138,13 +137,6 @@ public Object parse(final TypeLiteral<?> type, final Parser.Context ctx) throws
             builder.add(ctx.next(paramType, value));
           }
           return builder.build();
-        }).upload(uploads -> {
-          ImmutableCollection.Builder builder = parsers.get(type.getRawType()).get();
-          TypeLiteral<Upload> paramType = TypeLiteral.get(Upload.class);
-          for (Upload upload : uploads) {
-            builder.add(ctx.next(paramType, upload));
-          }
-          return builder.build();
         });
       } else {
         return ctx.next();
@@ -174,8 +166,6 @@ public Object parse(final TypeLiteral<?> type, final Parser.Context ctx)
                 return java.util.Optional.empty();
               }
               return java.util.Optional.of(ctx.next(paramType));
-            }).upload(files -> {
-              return java.util.Optional.of(ctx.next(paramType));
             });
       } else {
         return ctx.next();
@@ -206,17 +196,6 @@ Object toEnum(final Class type, final String value) {
     }
   },
 
-  Upload {
-    @Override
-    public Object parse(final TypeLiteral<?> type, final Context ctx) throws Throwable {
-      if (Upload.class == type.getRawType()) {
-        return ctx.upload(uploads -> uploads.get(0));
-      } else {
-        return ctx.next();
-      }
-    }
-  },
-
   Bytes {
     @Override
     public Object parse(final TypeLiteral<?> type, final Parser.Context ctx) throws Throwable {

jooby/src/main/java/org/jooby/internal/RequestImpl.java

@@ -21,6 +21,7 @@
 import static java.util.Objects.requireNonNull;
 
 import java.io.File;
+import java.io.IOException;
 import java.nio.charset.Charset;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -207,27 +208,24 @@ public Mutant param(final String name) {
     return _param(name, null);
   }
 
+  @Override
+  public List<Upload> files(final String name) throws IOException {
+    List<NativeUpload> files = req.files(name);
+    List<Upload> uploads = files.stream()
+        .map(upload -> new UploadImpl(injector, upload))
+        .collect(Collectors.toList());
+    return uploads;
+  }
+
   private Mutant _param(final String name, final Function<String, String> xss) {
     Mutant param = this.params.get(name);
     if (param == null) {
-      List<NativeUpload> files = Try.of(() -> req.files(name)).getOrElseThrow(
-          ex -> new Err(Status.BAD_REQUEST, "Upload " + name + " resulted in error", ex));
-      if (files.size() > 0) {
-        List<Upload> uploads = files.stream()
-            .map(upload -> new UploadImpl(injector, upload))
-            .collect(Collectors.toList());
-        param = new MutantImpl(require(ParserExecutor.class), type(),
-            new UploadParamReferenceImpl(name, uploads));
+      StrParamReferenceImpl paramref = new StrParamReferenceImpl("parameter", name,
+          params(name, xss));
+      param = new MutantImpl(require(ParserExecutor.class), paramref);
 
+      if (paramref.size() > 0) {
         this.params.put(name, param);
-      } else {
-        StrParamReferenceImpl paramref = new StrParamReferenceImpl("parameter", name,
-            params(name, xss));
-        param = new MutantImpl(require(ParserExecutor.class), paramref);
-
-        if (paramref.size() > 0) {
-          this.params.put(name, param);
-        }
       }
     }
     return param;

jooby/src/main/java/org/jooby/internal/mvc/RequestParam.java

@@ -21,6 +21,7 @@
 import java.lang.reflect.AnnotatedElement;
 import java.lang.reflect.Parameter;
 import java.lang.reflect.Type;
+import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 
@@ -33,6 +34,7 @@
 import org.jooby.Response;
 import org.jooby.Route;
 import org.jooby.Session;
+import org.jooby.Upload;
 import org.jooby.mvc.Body;
 import org.jooby.mvc.Flash;
 import org.jooby.mvc.Header;
@@ -87,6 +89,19 @@ private interface GetValue {
     builder.put(TypeLiteral.get(Session.class), (req, rsp, param) -> req.session());
     builder.put(TypeLiteral.get(Types.newParameterizedType(Optional.class, Session.class)),
         (req, rsp, param) -> req.ifSession());
+
+    /**
+     * Files
+     */
+    builder.put(TypeLiteral.get(Upload.class), (req, rsp, param) -> req.file(param.name));
+    builder.put(TypeLiteral.get(Types.newParameterizedType(Optional.class, Upload.class)),
+        (req, rsp, param) -> {
+          List<Upload> files = req.files(param.name);
+          return files.size() == 0 ? Optional.empty() : Optional.of(files.get(0));
+        });
+    builder.put(TypeLiteral.get(Types.newParameterizedType(List.class, Upload.class)),
+        (req, rsp, param) -> req.files(param.name));
+
     /**
      * Cookie
      */
@@ -122,7 +137,7 @@ private interface GetValue {
       if (param.type.getRawType() == Map.class) {
         return req.flash();
       }
-      return param.optional? req.ifFlash(param.name) : req.flash(param.name);
+      return param.optional ? req.ifFlash(param.name) : req.flash(param.name);
     });
 
     injector = builder.build();

jooby/src/main/java/org/jooby/internal/parser/ParserBuilder.java

@@ -24,11 +24,9 @@
 import org.jooby.Parser;
 import org.jooby.Parser.Builder;
 import org.jooby.Parser.Callback;
-import org.jooby.Upload;
 import org.jooby.internal.BodyReferenceImpl;
 import org.jooby.internal.EmptyBodyReference;
 import org.jooby.internal.StrParamReferenceImpl;
-import org.jooby.internal.UploadParamReferenceImpl;
 
 import com.google.common.collect.ImmutableMap;
 import com.google.inject.TypeLiteral;
@@ -95,17 +93,6 @@ public Builder ifparams(final Callback<Map<String, Mutant>> callback) {
     return params(callback);
   }
 
-  @Override
-  public Builder upload(final Callback<Parser.ParamReference<Upload>> callback) {
-    strategies.put(TypeLiteral.get(UploadParamReferenceImpl.class), callback);
-    return this;
-  }
-
-  @Override
-  public Builder ifupload(final Callback<Parser.ParamReference<Upload>> callback) {
-    return upload(callback);
-  }
-
   @SuppressWarnings("unchecked")
   public Object parse() throws Throwable {
     Map<TypeLiteral<?>, Callback> map = strategies.build();

jooby/src/main/java/org/jooby/internal/parser/ParserExecutor.java

@@ -32,10 +32,8 @@
 import org.jooby.Parser.Callback;
 import org.jooby.Parser.ParamReference;
 import org.jooby.Status;
-import org.jooby.Upload;
 import org.jooby.internal.StatusCodeProvider;
 import org.jooby.internal.StrParamReferenceImpl;
-import org.jooby.internal.UploadParamReferenceImpl;
 
 import com.google.common.collect.ImmutableList;
 import com.google.inject.Injector;
@@ -100,16 +98,6 @@ public Builder ifbody(final Callback<BodyReference> callback) {
         return builder.ifbody(callback);
       }
 
-      @Override
-      public Builder upload(final Callback<Parser.ParamReference<Upload>> callback) {
-        return builder.upload(callback);
-      }
-
-      @Override
-      public Builder ifupload(final Callback<ParamReference<Upload>> callback) {
-        return builder.ifupload(callback);
-      }
-
       @Override
       public Builder param(final Callback<ParamReference<String>> callback) {
         return builder.param(callback);
@@ -171,9 +159,6 @@ private Object wrap(final Object nextval, final Object value) {
           ParamReference<?> pref = (ParamReference) value;
           return new StrParamReferenceImpl(pref.type(), pref.name(),
               ImmutableList.of((String) nextval));
-        } else if (nextval instanceof Upload) {
-          ParamReference<?> pref = (ParamReference) value;
-          return new UploadParamReferenceImpl(pref.name(), ImmutableList.of((Upload) nextval));
         }
         return nextval;
       }

jooby/src/test/java/org/jooby/RequestTest.java

@@ -3,6 +3,7 @@
 import static org.easymock.EasyMock.expect;
 import static org.junit.Assert.assertEquals;
 
+import java.io.IOException;
 import java.nio.charset.Charset;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -234,6 +235,11 @@ public long timestamp() {
       throw new UnsupportedOperationException();
     }
 
+    @Override
+    public List<Upload> files(final String name) throws IOException {
+      throw new UnsupportedOperationException();
+    }
+
   }
 
   @Test