/**
*
* Copyright (c) 2006-2017, Speedment, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); You may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.speedment.common.codegen.internal.java.view;
import com.speedment.common.codegen.Generator;
import com.speedment.common.codegen.Transform;
import com.speedment.common.codegen.model.AnnotationUsage;
import java.util.Optional;
import java.util.stream.Stream;
import static com.speedment.common.codegen.internal.util.CollectorUtil.joinIfNotEmpty;
import static java.util.Objects.requireNonNull;
/**
* Transforms from an {@link AnnotationUsage} to java code.
*
* @author Emil Forslund
*/
public final class AnnotationUsageView implements Transform<AnnotationUsage, String> {
@Override
public Optional<String> transform(Generator gen, AnnotationUsage model) {
requireNonNull(gen);
requireNonNull(model);
final Optional<String> value = gen.on(model.getValue());
final Stream<String> valueStream = value.isPresent()
? Stream.of(value.get())
: Stream.empty();
return Optional.of(
"@" + gen.on(model.getType()).get()
+ Stream.of(
model.getValues().stream()
.map(e -> e.getKey() +
gen.on(e.getValue())
.map(s -> " = " + s)
.orElse("")
),
valueStream
).flatMap(s -> s).collect(
joinIfNotEmpty(", ", "(", ")")
)
);
}
}